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1

Analysis of Precipitation Using Satellite Observations and Comparisons with Global Climate Models  

E-Print Network [OSTI]

is investigated by comparisons with satellite observa- iv tions. Speci cally, six-year long (2000-2005) simulations are performed using a high- resolution (36-km) Weather Research Forecast (WRF) model and the Community Atmosphere Model (CAM) at T85 spatial... . . . . . . . . . . . . . . . . 31 B. Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 1. Satellite data . . . . . . . . . . . . . . . . . . . . . . . 33 2. Weather research and forecast model simulations . . . 34 3. Community atmosphere model simulations...

Murthi, Aditya

2011-08-08T23:59:59.000Z

2

Brazil Direct Normal Solar Radiation Model (10km) from INPE and...  

Open Energy Info (EERE)

Dataset Activity Stream Brazil Direct Normal Solar Radiation Model (10km) from INPE and LABSOLAR (Abstract): Normal direct solar radiation in kWhm2day for 1 year organized into...

3

Brazil Latitude Tilted Solar Radiation Model (40km) from INPE and LABSOLAR  

Open Energy Info (EERE)

40km) from INPE and LABSOLAR 40km) from INPE and LABSOLAR Dataset Summary Description (Abstract): Latitude tilted solar radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files.The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase

4

Brazil PAR Solar Radiation Model (40km) from INPE and LABSOLAR | OpenEI  

Open Energy Info (EERE)

40km) from INPE and LABSOLAR 40km) from INPE and LABSOLAR Dataset Summary Description (Abstract): Photosynthetically active radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km (Purpose): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files (Supplemental Information): The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory

5

Brazil Direct Normal Solar Radiation Model (40km) from INPE and LABSOLAR |  

Open Energy Info (EERE)

40km) from INPE and LABSOLAR 40km) from INPE and LABSOLAR Dataset Summary Description (Abstract): Normal direct solar radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files. The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory.

6

Brazil Direct Normal Solar Radiation Model (10km) from INPE and LABSOLAR |  

Open Energy Info (EERE)

10km) from INPE and LABSOLAR 10km) from INPE and LABSOLAR Dataset Summary Description (Abstract): Normal direct solar radiation in kWh/m2/day for 1 year organized into cells with 10km x 10km (Purpose): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files (Supplemental Information): The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory

7

Brazil Global Horizontal Solar Radiation Model (10km) from INPE | OpenEI  

Open Energy Info (EERE)

10km) from INPE 10km) from INPE Dataset Summary Description (Abstract): Global horizontal solar radiation in kWh/m2/day for 1 year organized into cells with 10km x 10km (Purpose): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files (Supplemental Information): The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory

8

Brazil PAR Solar Radiation Model (10km) from INPE and LABSOLAR | OpenEI  

Open Energy Info (EERE)

10km) from INPE and LABSOLAR 10km) from INPE and LABSOLAR Dataset Summary Description (Abstract): Photosynthetically active radiation in kWh/m2/day for 1 year organized into cells with 10km x 10km (Purpose): The BRASIL-SR model and the SPRING software (both developed by INPE -National Institute for Space Research) were used to produce the dataset and SHAPE files (Supplemental Information): The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory

9

Brazil Global Horizontal Solar Radiation Model (40km) from INPE | OpenEI  

Open Energy Info (EERE)

40km) from INPE 40km) from INPE Dataset Summary Description (Abstract): Global horizontal solar radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files. The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took art in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory.

10

Brazil Latitude Tilted Solar Radiation Model (10km) from INPE and LABSOLAR  

Open Energy Info (EERE)

10km) from INPE and LABSOLAR 10km) from INPE and LABSOLAR Dataset Summary Description (Abstract): Latitude tilted solar radiation in kWh/m2/day for 1 year organized into cells with 10km x 10km (Purpose): The BRASIL-SR model and the SPRING software (both developed by INPE -National Institute for Space Research) were used to produce the dataset and SHAPE files (Supplemental Information): The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources incountries from European Union. In the second phase, the solar flux estimates providedby the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory

11

SEMI EMPIRICAL SATELLITE MODELS Richard Perez1  

E-Print Network [OSTI]

used for solar engineering applications. These satellites are equipped with several radiation sensors University of New York, ASRC, Albany, NY, USA 2 GeoModel Solar, Bratislava, Slovakia Abstract This chapter discusses basic principles of solar irradiance modeling based on the use of input data from geostationary

Perez, Richard R.

12

Modelling and control of satellite formations  

E-Print Network [OSTI]

MODELLING AND CONTROL OF SATELLITE FORMATIONS A Dissertation by VEERA VENKATA SESHA SAI VADDI Submitted to the Oce of Graduate Studies of Texas A&M University in partial fulllment of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2003... Major Subject: Aerospace Engineering MODELLING AND CONTROL OF SATELLITE FORMATIONS A Dissertation by VEERA VENKATA SESHA SAI VADDI Submitted to Texas A&M University in partial fulllment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved...

Vaddi, Veera Venkata Sesha Sai

2004-09-30T23:59:59.000Z

13

Single-Column Modeling D. A. Randall and K.-M. Xu Colorado State University  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

D. A. Randall and K.-M. Xu D. A. Randall and K.-M. Xu Colorado State University Department of Atmospheric Science Fort Collins, CO 80523 Introduction Our ARM project consists of developing and demonstrating improved cloud formation parameterizations by using both a single-column model (SCM) and a cumulus ensemble model (CEM), together with ARM data. These two models can be driven with "large-scale forcing" (e.g., vertical motion) as observed in ARM; each model produces a field of clouds and the associated radiation and precipitation fields. The SCM does so through its physical parameterizations, while the CEM does so by "directly simulating" convective cloud circulations. The improved parameterizations tested in this way will be further tested and applied in the Colorado State University (CSU) general

14

A model for improving ocean wind forecasts using satellite  

E-Print Network [OSTI]

Using the dynamical model from previous talk we now want to assimilate the satellite measurements Using the dynamical model from previous talk we now want to assimilate the satellite measurements now want to assimilate the satellite measurements into this model. We will discuss the measurement

Malmberg, Anders

15

RETHINKING SATELLITE BASED SOLAR IRRADIANCE MODELLING R. W. Mueller  

E-Print Network [OSTI]

. Solar irra- diance schemes provide these data using weather satellites such as METEOSAT and MSGRETHINKING SATELLITE BASED SOLAR IRRADIANCE MODELLING R. W. Mueller , K.F. Dagestad ¡ , R transfer models (RTM) using the information of atmospheric parameters retrieved from the MSG satellite

Heinemann, Detlev

16

Validation of PV performance models using satellite-based irradiance measurements : a case study.  

SciTech Connect (OSTI)

Photovoltaic (PV) system performance models are relied upon to provide accurate predictions of energy production for proposed and existing PV systems under a wide variety of environmental conditions. Ground based meteorological measurements are only available from a relatively small number of locations. In contrast, satellite-based radiation and weather data (e.g., SUNY database) are becoming increasingly available for most locations in North America, Europe, and Asia on a 10 x 10 km grid or better. This paper presents a study of how PV performance model results are affected when satellite-based weather data is used in place of ground-based measurements.

Stein, Joshua S.; Parkins, Andrew (Clean Power Research); Perez, Richard (University at Albany)

2010-05-01T23:59:59.000Z

17

Validation of the SUNY Satellite Model in a Meteosat Evironment  

SciTech Connect (OSTI)

The paper presents a validation of the SUNY satellite-to-irradiance model against four ground-truth stations from the Indian solar radiation network located in and around the province of Rajasthan, India. The SUNY model had initially been developed and tested to process US weather satellite data from the GOES series and has been used as part of the production of the US National Solar Resource Data Base (NSRDB). Here the model is applied to processes data from the European weather satellites Meteosat 5 and 7.

Perez, R.; Schlemmer, J.; Renne, D.; Cowlin, S.; George, R.; Bandyopadhyay, B.

2009-01-01T23:59:59.000Z

18

Modeling Of Surface Deformation From Satellite Radar Interferometry In The  

Open Energy Info (EERE)

Modeling Of Surface Deformation From Satellite Radar Interferometry In The Modeling Of Surface Deformation From Satellite Radar Interferometry In The Salton Sea Geothermal Field, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Modeling Of Surface Deformation From Satellite Radar Interferometry In The Salton Sea Geothermal Field, California Details Activities (1) Areas (1) Regions (0) Abstract: Surface deformation in the Salton Sea geothermal field is modeled using results from satellite radar interferometry, data from leveling surveys, and observations from the regional GPS network. The field is located in the Salton Trough, an active spreading center in southern California, which is traversed by the Brawley seismic zone. Deformation time series at thousands of points in the study area are obtained from a

19

Cross Validation of Satellite Radiation Transfer Models during SWERA  

Open Energy Info (EERE)

Cross Validation of Satellite Radiation Transfer Models during SWERA Cross Validation of Satellite Radiation Transfer Models during SWERA Project in Brazil Dataset Summary Description (Abstract): This work describes the cross validation between two different core radiation transfer models that will be applied during the SWERA (Solar and Wind Energy Assessment): the BRAZIL-SR, and the SUNY-Albany. The model cross validation was performed by using two reference sites in Brazil: at Caicó (06°28'01"S - 037°05'05"W,175.8 m), and Florianópolis (27°34'18"S - 048°31'42"W, 10 m), Satellite data were collected by INPE-CPTEC for GOES-8, that also provides for its quality assessment, sectoring, storing and distribution to the participating teams. In this work we show the first results of this cross-validation along with some discussions on model deviations

20

An Investigation into Satellite Drag Modeling Performance  

E-Print Network [OSTI]

parameters, but with so much variability, capturing the small scale changes the atmosphere undergoes is difficult. Many techniques have been developed to fine tune atmospheric models to include these variations. One such technique is dynamic calibration... ............................................................................. 49 2.3.1 Atmospheric Modeling Upgrade ..................................................... 50 2.3.1.1 NRLMSISE-2000 Modification ...................................................... 50 2.3.1.2 DCA Corrections Modification...

Mance, Stephen

2010-03-23T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Recent Changes in Arctic Vegetation: Satellite Observations and Simulation Model Predictions  

E-Print Network [OSTI]

Chapter 2 Recent Changes in Arctic Vegetation: Satellite Observations and Simulation Model with a combination of satellite observations (Fig. 2.1) and field mea- surements, as projected by simulation modeling

Bhatt, Uma

22

VALIDATION OF PV PERFORMANCE MODELS USING SATELLITE-BASED IRRADIANCE MEASUREMENTS: A CASE STUDY  

E-Print Network [OSTI]

performance model results are affected when satellite- based weather data is used in place of ground from a relatively small number of locations. In contrast, satellite-based radiation and weather data (e performance models using both ground and satellite-based weather inputs and compare model results

Perez, Richard R.

23

Global temperatures using satellite and numerical model assimilated data  

SciTech Connect (OSTI)

The Microwave Sounding Unit (MSU) aboard the National Oceanic and Atmospheric Administration (NOAA) series of polar orbiting satellites (TIROS-N to NOAA-11) have provided stable, precise measurements of vertically integrated, atmospheric temperature since December 1978. In this study, comparisons are made between the MSU channel measurements and those derived from the Global Data Assimilation System (GDAS) at the National Meteorological Center (NMC) over the period 1979 to 1990. Land areas rich in Radiosonde Observations (RAOBS) showed similar magnitudes of spatial variability between the NMC GDAS and the MSU temperatures. Excessive spatial variability can be noted in the GDAS over land areas where conventional data is poor. Over the ocean, however, the assimilation of satellite data into the model improves the spatial variability detected by the GDAS.

Basist, A.; Ropelewski, C.; Grody, N. (NOAA/NWS/NMC, Washington, DC (United States) NOAA/NESDIS, Washington, DC (United States))

1994-01-01T23:59:59.000Z

24

SpaceWire model development technology for satellite architecture.  

SciTech Connect (OSTI)

Packet switched data communications networks that use distributed processing architectures have the potential to simplify the design and development of new, increasingly more sophisticated satellite payloads. In addition, the use of reconfigurable logic may reduce the amount of redundant hardware required in space-based applications without sacrificing reliability. These concepts were studied using software modeling and simulation, and the results are presented in this report. Models of the commercially available, packet switched data interconnect SpaceWire protocol were developed and used to create network simulations of data networks containing reconfigurable logic with traffic flows for timing system distribution.

Eldridge, John M.; Leemaster, Jacob Edward; Van Leeuwen, Brian P.

2011-09-01T23:59:59.000Z

25

Modelling of space weather effects on satellite drag  

Science Journals Connector (OSTI)

For satellites on low Earth orbits, aerodynamic drag provides an important contribution to the spectrum of perturbing forces. Aerodynamic drag is only of second order magnitude or less, as compared to the first order Earth oblateness perturbation to the orbit. However, due to its energy dissipating nature, it is the driving effect for altitude decay and associated along-track dispersions. Determining parameters for the drag force are the local air densities, the projected cross-section, and a drag coefficient which describes the interaction between impinging molecules and the spacecraft surface in the regime of free-molecular flow. The local and exospheric temperature, the atmospheric composition, and the resulting densities are strongly driven by space weather effects from solar extreme ultraviolet radiation, and from coronal mass ejections which may lead to geomagnetic storms. Thermospheric models are currently the limiting factor in the accuracy of orbit determination and prediction. Any improvement in these models would greatly aid in applications such as re-entry prediction, ground-track maintenance and gravity field and geodetic science missions. This paper gives an overview of many aspects of satellite drag modelling for orbit determination. The performance of current thermosphere models is analysed using tracking data, and recent developments such as model calibration are described.

E. Doornbos; H. Klinkrad

2006-01-01T23:59:59.000Z

26

Model-Based Telerobotic Control with Virtual Fixtures For Satellite Servicing Tasks  

E-Print Network [OSTI]

the tape that secures a flap of multi-layer insulation over the access panel of a satellite mockup. I its national capability to perform on- orbit repair of satellites in low-earth orbit, and evenModel-Based Telerobotic Control with Virtual Fixtures For Satellite Servicing Tasks Tian Xia, Simon

Whitcomb, Louis L.

27

CROSS VALIDATION OF SATELLITE RADIATION TRANSFER MODELS DURING SWERA PROJECT  

Open Energy Info (EERE)

ISES- 2003 ISES- 2003 CROSS VALIDATION OF SATELLITE RADIATION TRANSFER MODELS DURING SWERA PROJECT IN BRAZIL Enio B. Pereira, Fernando R. Martins 1 Brazilian Institute for Space Research - INPE, São José dos Campos, 12245-970, SP, Brazil Phone + 55 12 39456741, Fax + 55 12 39456810, enio@dge.inpe.br Samuel L. Abreu, Hans Georg Beyer, Sergio Colle, and Solar Energy Laboratory - LABSOLAR - Department of Mechanical Engineering, Federal University of Santa Catarina -UFSC, Florianopolis, 88040-900, (SC), Brazil, Richard Perez The University at Albany (SUNY), ASRC-CESTM, Albany, 12203 (NY), USA Abstract - This work describes the cross validation between two different core radiation transfer models that will be applied during the SWERA (Solar and Wind Energy Assessment): the BRAZIL-SR, and the

28

Modeling Of Surface Deformation From Satellite Radar Interferometry...  

Open Energy Info (EERE)

interferometric synthetic aperture radar) analysis of two-year Radarsat satellite data covering the period May 2006 - March 2008. SAR scenes from two orbit geometries are...

29

Assimilation of satellite images into a sediment transport model of Lake Michigan  

E-Print Network [OSTI]

by combining the satellite data with the numerical model. In our application, we find that data assimilationAssimilation of satellite images into a sediment transport model of Lake Michigan Jonathan R consider two data assimilation methods, direct insertion and a kriging-based approach, and perform

Stroud, Jonathan

30

Ion Micro-Propulsion and Cost Modeling for Satellite Clusters  

E-Print Network [OSTI]

the primary instruments were distributed among three smaller satellites. This increased reliability of this thesis while I recovered from tendonitis in my wrists (too many hours slaving away in the lab!). Her help

31

A New Operational Model for Satellite-Derived Irradiances: Description and  

Open Energy Info (EERE)

A New Operational Model for Satellite-Derived Irradiances: Description and A New Operational Model for Satellite-Derived Irradiances: Description and Validation Dataset Summary Description (Abstract): We present a new simple model capable of exploiting geostationary satellite visible images for the production of site/time specific global and direct irradiances The new model features new clear sky global and direct irradiance functions, a new cloud-index-to-irradiance index function, a new global-to-direct-irradiance conversion model. The model can also exploit operationally available snow cover resource data, while deriving local ground specular reflectance characteristics from the stream of incoming satellite data. Validation against 10 US locations representing a wide range of climatic environments indicates that model performance is

32

USING SATELLITE OBSERVATIONS AND REANALYSES TO EVALUATE CLIMATE AND WEATHER FORECAST MODELS  

E-Print Network [OSTI]

USING SATELLITE OBSERVATIONS AND REANALYSES TO EVALUATE CLIMATE AND WEATHER FORECAST MODELS Richard Email: rpa@mail.nerc-essc.ac.uk ABSTRACT Satellite observations of water vapour and radiative fluxes are used in combination with reanalyses data to evaluate the Met Office weather and climate prediction

Allan, Richard P.

33

The influence of the land surface on hydrometeorology and ecology: new advances from modeling and satellite  

E-Print Network [OSTI]

and satellite remote sensing Venkat Lakshmi, Seungbum Hong, Eric E. Small and Fei Chen ABSTRACT The importance role in climate and weather modeling. However, their quantification has been challenging due temperature (TSK), and vegetation water content (VegWC) derived from satellite sensors such as Moderate

Small, Eric

34

18 Use of Satellite Remote Sensing Data for Modeling Carbon Emissions from Fires: A Perspective in  

E-Print Network [OSTI]

18 Use of Satellite Remote Sensing Data for Modeling Carbon Emissions from Fires: A Perspective of the accurate estimation of carbon emissions from fires. So far, the continental-scale estimates of carbon conventional and satellite data to maximize their utility for fire emission estimation. 18.2 Carbon Emission

Li, Zhanqing

35

Evaluation of Clear Sky Models for Satellite-Based Irradiance Estimates  

SciTech Connect (OSTI)

This report describes an intercomparison of three popular broadband clear sky solar irradiance model results with measured data, as well as satellite-based model clear sky results compared to measured clear sky data. The authors conclude that one of the popular clear sky models (the Bird clear sky model developed by Richard Bird and Roland Hulstrom) could serve as a more accurate replacement for current satellite-model clear sky estimations. Additionally, the analysis of the model results with respect to model input parameters indicates that rather than climatological, annual, or monthly mean input data, higher-time-resolution input parameters improve the general clear sky model performance.

Sengupta, M.; Gotseff, P.

2013-12-01T23:59:59.000Z

36

Modelling avian biodiversity using raw, unclassified satellite imagery  

Science Journals Connector (OSTI)

...Fort Bliss military base in New Mexico overlayed on a 10 m DEM (elevation...the Chihuahuan Desert of New Mexico. Ecography 32, 468-480...the satellite signal in the solar spectrum - the 5S code. Int...Hurlbert, AH . 2004 Species-energy relationships and habitat complexity...

2014-01-01T23:59:59.000Z

37

Satellite Data Assimilation in Numerical Weather Prediction Models. Part I: Forward Radiative Transfer and Jacobian Modeling in Cloudy Atmospheres  

Science Journals Connector (OSTI)

Satellite data assimilation requires rapid and accurate radiative transfer and radiance gradient models. For a vertically stratified scattering and emitting atmosphere, the vector discrete-ordinate radiative transfer model (VDISORT) was developed ...

Fuzhong Weng; Quanhua Liu

2003-11-01T23:59:59.000Z

38

Terrestrial Carbon Sinks for the United States Predicted from MODIS Satellite Data and Ecosystem Modeling  

Science Journals Connector (OSTI)

A simulation model based on satellite observations of monthly vegetation cover from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate monthly carbon fluxes in terrestrial ecosystems of the conterminous United States ...

Christopher Potter; Steven Klooster; Alfredo Huete; Vanessa Genovese

2007-08-01T23:59:59.000Z

39

Evaluation of Precipitation from Numerical Weather Prediction Models and Satellites Using Values Retrieved from Radars  

Science Journals Connector (OSTI)

Precipitation is evaluated from two weather prediction models and satellites, taking radar-retrieved values as a reference. The domain is over the central and eastern United States, with hourly accumulated precipitation over 21 days for the ...

Slavko Vasi?; Charles A. Lin; Isztar Zawadzki; Olivier Bousquet; Diane Chaumont

2007-11-01T23:59:59.000Z

40

Assimilation of Satellite Cloud and Precipitation Observations in Numerical Weather Prediction Models: Introduction to the JAS Special Collection  

Science Journals Connector (OSTI)

To date, the assimilation of satellite measurements in numerical weather prediction (NWP) models has focused on the clear atmosphere. But satellite observations in the visible, infrared, and microwave provide a great deal of information on clouds ...

Ronald M. Errico; George Ohring; Fuzhong Weng; Peter Bauer; Brad Ferrier; Jean-Franois Mahfouf; Joe Turk

2007-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Satellite-Based Quantum Communications  

SciTech Connect (OSTI)

Single-photon quantum communications (QC) offers the attractive feature of 'future proof', forward security rooted in the laws of quantum physics. Ground based quantum key distribution (QKD) experiments in optical fiber have attained transmission ranges in excess of 200km, but for larger distances we proposed a methodology for satellite-based QC. Over the past decade we have devised solutions to the technical challenges to satellite-to-ground QC, and we now have a clear concept for how space-based QC could be performed and potentially utilized within a trusted QKD network architecture. Functioning as a trusted QKD node, a QC satellite ('QC-sat') could deliver secret keys to the key stores of ground-based trusted QKD network nodes, to each of which multiple users are connected by optical fiber or free-space QC. A QC-sat could thereby extend quantum-secured connectivity to geographically disjoint domains, separated by continental or inter-continental distances. In this paper we describe our system concept that makes QC feasible with low-earth orbit (LEO) QC-sats (200-km-2,000-km altitude orbits), and the results of link modeling of expected performance. Using the architecture that we have developed, LEO satellite-to-ground QKD will be feasible with secret bit yields of several hundred 256-bit AES keys per contact. With multiple ground sites separated by {approx} 100km, mitigation of cloudiness over any single ground site would be possible, potentially allowing multiple contact opportunities each day. The essential next step is an experimental QC-sat. A number of LEO-platforms would be suitable, ranging from a dedicated, three-axis stabilized small satellite, to a secondary experiment on an imaging satellite. to the ISS. With one or more QC-sats, low-latency quantum-secured communications could then be provided to ground-based users on a global scale. Air-to-ground QC would also be possible.

Hughes, Richard J [Los Alamos National Laboratory; Nordholt, Jane E [Los Alamos National Laboratory; McCabe, Kevin P [Los Alamos National Laboratory; Newell, Raymond T [Los Alamos National Laboratory; Peterson, Charles G [Los Alamos National Laboratory

2010-09-20T23:59:59.000Z

42

Io hot spots - infrared photometry of satellite occultations  

SciTech Connect (OSTI)

Io's active hot spots, which are presently mapped on the basis of IR photometry of this moon's occultation by other Gallilean satellites, are obtained with greatest spatial resolution near the sub-earth point. A model is developed for the occultation lightcurves, and its fitting to the data defines the apparent path of the occulting satellite relative to Io; the mean error in apparent relative position of occulting satellites is of the order of 178 km. A heretofore unknown, 20-km diameter hot spot is noted on Io's leading hemisphere. 31 references.

Goguen, J.D.; Matson, D.L.; Sinton, W.M.; Howell, R.R.; Dyck, H.M.

1988-12-01T23:59:59.000Z

43

Aerosol indirect effects -- general circulation model intercomparison and evaluation with satellite data  

SciTech Connect (OSTI)

Aerosol indirect effects continue to constitute one of the most important uncertainties for anthropogenic climate perturbations. Within the international AEROCOM initiative, the representation of aerosol-cloud-radiation interactions in ten different general circulation models (GCMs) is evaluated using three satellite datasets. The focus is on stratiform liquid water clouds since most GCMs do not include ice nucleation effects, and none of the model explicitly parameterizes aerosol effects on convective clouds. We compute statistical relationships between aerosol optical depth (Ta) and various cloud and radiation quantities in a manner that is consistent between the models and the satellite data. It is found that the model-simulated influence of aerosols on cloud droplet number concentration (Nd) compares relatively well to the satellite data at least over the ocean. The relationship between Ta and liquid water path is simulated much too strongly by the models. It is shown that this is partly related to the representation of the second aerosol indirect effect in terms of autoconversion. A positive relationship between total cloud fraction (fcld) and Ta as found in the satellite data is simulated by the majority of the models, albeit less strongly than that in the satellite data in most of them. In a discussion of the hypotheses proposed in the literature to explain the satellite-derived strong fcld - Ta relationship, our results indicate that none can be identified as unique explanation. Relationships similar to the ones found in satellite data between Ta and cloud top temperature or outgoing long-wave radiation (OLR) are simulated by only a few GCMs. The GCMs that simulate a negative OLR - Ta relationship show a strong positive correlation between Ta and fcld The short-wave total aerosol radiative forcing as simulated by the GCMs is strongly influenced by the simulated anthropogenic fraction of Ta, and parameterisation assumptions such as a lower bound on Nd. Nevertheless, the strengths of the statistical relationships are good predictors for the aerosol forcings in the models. An estimate of the total short-wave aerosol forcing inferred from the combination of these predictors for the modelled forcings with the satellite-derived statistical relationships yields a global annual mean value of -1.5+-0.5 Wm-2. An alternative estimate obtained by scaling the simulated clear- and cloudy-sky forcings with estimates of anthropogenic Ta and satellite-retrieved Nd - Ta regression slopes, respectively, yields a global annual mean clear-sky (aerosol direct effect) estimate of -0.4+-0.2 Wm-2 and a cloudy-sky (aerosol indirect effect) estimate of -0.7+-0.5 Wm-2, with a total estimate of -1.2+-0.4 Wm-2.

Quaas, Johannes; Ming, Yi; Menon, Surabi; Takemura, Toshihiko; Wang, Minghuai; Penner, Joyce E.; Gettelman, Andrew; Lohmann, Ulrike; Bellouin, Nicolas; Boucher, Olivier; Sayer, Andrew M.; Thomas, Gareth E.; McComiskey, Allison; Feingold, Graham; Hoose, Corinna; Kristjansson, Jon Egill; Liu, Xiaohong; Balkanski, Yves; Donner, Leo J.; Ginoux, Paul A.; Stier, Philip; Feichter, Johann; Sednev, Igor; Bauer, Susanne E.; Koch, Dorothy; Grainger, Roy G.; Kirkevag, Alf; Iversen, Trond; Seland, Oyvind; Easter, Richard; Ghan, Steven J.; Rasch, Philip J.; Morrison, Hugh; Lamarque, Jean-Francois; Iacono, Michael J.; Kinne, Stefan; Schulz, Michael

2009-04-10T23:59:59.000Z

44

Solar: annual average direct normal (DNI) GIS data at 10km resolution for  

Open Energy Info (EERE)

GIS data at 10km resolution for GIS data at 10km resolution for Cuba from SUNY Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Cuba (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 10 km by 10 km in size. The solar resource value is represented as kilowatt-hours per square meter per day for each month. The data were developed from the State University of New York's (SUNY) GOES satellite solar model. This

45

Satellite Collision Modeling with Physics-Based Hydrocodes: Debris Generation Predictions of the Iridium-Cosmos Collision Event and Other Impact Events  

SciTech Connect (OSTI)

Satellite collision debris poses risks to existing space assets and future space missions. Predictive models of debris generated from these hypervelocity collisions are critical for developing accurate space situational awareness tools and effective mitigation strategies. Hypervelocity collisions involve complex phenomenon that spans several time- and length-scales. We have developed a satellite collision debris modeling approach consisting of a Lagrangian hydrocode enriched with smooth particle hydrodynamics (SPH), advanced material failure models, detailed satellite mesh models, and massively parallel computers. These computational studies enable us to investigate the influence of satellite center-of-mass (CM) overlap and orientation, relative velocity, and material composition on the size, velocity, and material type distributions of collision debris. We have applied our debris modeling capability to the recent Iridium 33-Cosmos 2251 collision event. While the relative velocity was well understood in this event, the degree of satellite CM overlap and orientation was ill-defined. In our simulations, we varied the collision CM overlap and orientation of the satellites from nearly maximum overlap to partial overlap on the outermost extents of the satellites (i.e, solar panels and gravity boom). As expected, we found that with increased satellite overlap, the overall debris cloud mass and momentum (transfer) increases, the average debris size decreases, and the debris velocity increases. The largest predicted debris can also provide insight into which satellite components were further removed from the impact location. A significant fraction of the momentum transfer is imparted to the smallest debris (< 1-5mm, dependent on mesh resolution), especially in large CM overlap simulations. While the inclusion of the smallest debris is critical to enforcing mass and momentum conservation in hydrocode simulations, there seems to be relatively little interest in their disposition. Based on comparing our results to observations, it is unlikely that the Iridium 33-Cosmos 2251 collision event was a large mass-overlap collision. We also performed separate simulations studying the debris generated by the collision of 5 and 10 cm spherical projectiles on the Iridium 33 satellite at closing velocities of 5, 10, and 15 km/s. It is important to understand the vulnerability of satellites to small debris threats, given their pervasiveness in orbit. These studies can also be merged with probabilistic conjunction analysis to better understand the risk to space assets. In these computational studies, we found that momentum transfer, kinetic energy losses due to dissipative mechanisms (e.g., fracture), fragment number, and fragment velocity increases with increasing velocity for a fixed projectile size. For a fixed velocity, we found that the smaller projectile size more efficiently transfers momentum to the satellite. This latter point has an important implication: Eight (spaced) 5 cm debris objects can impart more momentum to the satellite, and likely cause more damage, than a single 10 cm debris object at the same velocity. Further studies are required to assess the satellite damage induced by 1-5 cm sized debris objects, as well as multiple debris objects, in this velocity range.

Springer, H K; Miller, W O; Levatin, J L; Pertica, A J; Olivier, S S

2010-09-06T23:59:59.000Z

46

Detecting the ITCZ in Instantaneous Satellite Data using Spatiotemporal Statistical Modeling: ITCZ Climatology in the East Pacific  

E-Print Network [OSTI]

Statistical Modeling: ITCZ Climatology in the East Pacific CInternational Satellite Cloud Climatology Project (ISCCP) B1assist in studying the climatology and dynamics of the ITCZ.

2011-01-01T23:59:59.000Z

47

A Comparative Study of Estimation Models for Satellite Relative Motion  

E-Print Network [OSTI]

increases, the linear models begin to diverge greatly from the true response. The additional two models (the biased CW equations, and the linear STM) show decent performance under specific conditions. The former accounts for some of the unaccounted...

Desai, Uri

2013-01-31T23:59:59.000Z

48

A simple column model to explore anticipated problems in variational assimilation of satellite observations  

E-Print Network [OSTI]

A simple column model to explore anticipated problems in variational assimilation of satellite Office, Exeter, UK Abstract We investigate a simplified form of variational data assimilation in a fully of nonlinearity become non-negligible in the variational data assimilation algorithm. A careful analysis

Roulstone, Ian

49

Evaluating Clouds, Aerosols, and their Interactions in Three Global Climate Models using COSP and Satellite Observations  

SciTech Connect (OSTI)

Accurately representing aerosol-cloud interactions in global climate models is challenging. As parameterizations evolve, it is important to evaluate their performance with appropriate use of observations. In this work we compare aerosols, clouds, and their interactions in three climate models (AM3, CAM5, ModelE) to MODIS satellite observations. Modeled cloud properties were diagnosed using the CFMIP Observations Simulator Package (COSP). Cloud droplet number concentrations (N) were derived using the same algorithm for both satellite-simulated model values and observations. We find that aerosol optical depth tau simulated by models is similar to observations. For N, AM3 and CAM5 capture the observed spatial pattern of higher values in near-coast versus remote ocean regions, though modeled values in general are higher than observed. In contrast, ModelE simulates lower N in most near-coast versus remote regions. Aerosol- cloud interactions were computed as the sensitivity of N to tau for marine liquid clouds off the coasts of South Africa and Eastern Asia where aerosol pollution varies in time. AM3 and CAM5 are in most cases more sensitive than observations, while the sensitivity for ModelE is statistically insignificant. This widely used sensitivity could be subject to misinterpretation due to the confounding influence of meteorology on both aerosols and clouds. A simple framework for assessing the N tau sensitivity at constant meteorology illustrates that observed sensitivity can change from positive to statistically insignificant when including the confounding influence of relative humidity. Satellite simulated values of N were compared to standard model output and found to be higher with a bias of 83 cm-3.

Ban-Weiss, George; Jin, Ling; Bauer, S.; Bennartz, Ralph; Liu, Xiaohong; Zhang, Kai; Ming, Yi; Guo, Huan; Jiang, Jonathan

2014-09-23T23:59:59.000Z

50

Solar: annual average global horizontal (GHI) GIS data at 10km resolution  

Open Energy Info (EERE)

global horizontal (GHI) GIS data at 10km resolution global horizontal (GHI) GIS data at 10km resolution for Cuba from SUNY Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate solar collectors for Cuba (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a horizontal flat-plate solar collector, such as a Photovoltaic (PV) solar panel. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 10 km by 10 km in size. The solar resource value is represented as kilowatt-hours per square meter per day for each month. The data were developed from the State University of New York's (SUNY) GOES satellite solar model. This model uses information on hourly satellite observed visible irradiance, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total of the normal or beam insolation falling on a tracking concentrator pointed

51

A NEW OPERATIONAL MODEL FOR SATELLITE-DERIVED IRRADIANCES DESCRIPTION AND VALIDATION  

Open Energy Info (EERE)

Published in Solar Energy - Vol. 73, 5, pp. 307-317, (2002) Published in Solar Energy - Vol. 73, 5, pp. 307-317, (2002) 1 of 23 A NEW OPERATIONAL MODEL FOR SATELLITE-DERIVED IRRADIANCES DESCRIPTION AND VALIDATION Richard Perez * Pierre Ineichen ** Kathy Moore * Marek Kmiecik * Cyril Chain *** Ray George **** Frank Vignola ***** * ASRC - The University at Albany, Albany, NY, USA ** CUEPE - University of Geneva, Geneva, Switzerland *** Vaulx-en-Velin, France **** NREL, Golden, CO, USA ***** University of Oregon, Eugene, OR, USA Published in Solar Energy - Vol. 73, 5, pp. 307-317, (2002) 2 of 23 ABSTRACT We present a new simple model capable of exploiting geostationary satellite visible images for the production of site/time specific global and direct irradiances The new model features new clear sky global and direct irradiance functions, a new

52

American Solar Energy Society Proc. ASES Annual Conference, Phoenix, AZ, May 2010 IMPROVING THE PERFORMANCE OF SATELLITE-TO-IRRADIANCE MODELS USING  

E-Print Network [OSTI]

: weather geostationary satellites such as NOAA's operational GOES series also view the earth through THE PERFORMANCE OF SATELLITE-TO-IRRADIANCE MODELS USING THE SATELLITE'S INFRARED SENSORS Richard Perez ASRC ABSTRACT This article describes, and presents a preliminary validation of a new geostationary satellite

Perez, Richard R.

53

Solar: annual average direct normal (DNI) map at 40km resolution for  

Open Energy Info (EERE)

map at 40km resolution for map at 40km resolution for Central America from NREL Dataset Summary Description (Abstract): A map depicting model estimates of monthly average daily total radiation using inputs derived from satellite and surface observations of cloud cover, aerosol optical depth, precipitable water vapor, albedo, atmospheric pressure and ozone sampled at a 40km resolution. (Purpose): A visual depiction of solar energy resource for concentrating solar power systems. Source NREL Date Released December 11th, 2003 (11 years ago) Date Updated October 30th, 2007 (7 years ago) Keywords Central America direct normal DNI map NREL solar SWERA UNEP Data application/pdf icon Download Map (pdf, 67.1 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency

54

Knob manager (KM) operators guide  

SciTech Connect (OSTI)

KM, Knob Manager, is a tool which enables the user to use the SUNDIALS knob box to adjust the settings of the control system. The followings are some features of KM: dynamic knob assignments with the user friendly interface; user-defined gain for individual knob; graphical displays for operating range and status of each process variable is assigned; backup and restore one or multiple process variable; save current settings to a file and recall the settings from that file in future.

NONE

1993-10-08T23:59:59.000Z

55

Cloud shading retrieval and assimilation in a satellite-model coupled mesoscale analysis system  

SciTech Connect (OSTI)

A retrieval-assimilation method has been developed as a quantitative means to exploit the information in satellite imagery regarding shading of the ground by clouds, as applied to mesoscale weather analysis. Cloud radiative parameters are retrieved from satellite visible image data and used, along with parameters computed by a numerical model, to control the model's computation of downward radiative fluxes at the ground. These fluxes influence the analysis of ground surface temperatures under clouds. The method is part of a satellite-model coupled four-dimensional analysis system that merges information from visible image data in cloudy areas with infrared sounder data in clear areas, where retrievals of surface temperatures and water vapor concentrations are assimilated. The substantial impact of shading on boundary-layer development and mesoscale circulations was demonstrated in simulations, and the value of assimilating shading retrievals was demonstrated with a case study and with a simulated analysis that included the effects of several potential sources of error. The case study was performed in the northwestern Texas area, where convective cloud development was influenced by the shading effects of a persistent region of stratiform cloud cover. Analyses that included shading retrieval assimilation had consistently smaller shelter-height temperature errors than analyses without shading retrievals. When clear-area surface temperature retrievals from sounder data were analyzed along with cloudy-area shading retrievals, the contrast in heating between the shaded and clear parts of the domain led to large variations in analyzed boundary-layer depths and had a modest impact on analyzed wind flow. The analyzed locations of upward vertical motion corresponded roughly to areas of convective cloud development observed in satellite imagery. 29 refs., 17 figs., 2 tabs.

Lipton, A.E. (Phillips Lab., Hanscom AFB, MA (United States))

1993-11-01T23:59:59.000Z

56

Mean Structure and diurnal cycle of Southeast Atlantic boundary layer clouds: Insights from satellite observations and multiscale modeling framework simulations  

Science Journals Connector (OSTI)

The mean structure and diurnal cycle of Southeast (SE) Atlantic boundary layer clouds are described with satellite observations and multi-scale modeling framework (MMF) simulations during austral spring (September-November). Hourly resolution ...

David Painemal; Kuan-Man Xu; Anning Cheng; Patrick Minnis; Rabindra Palikonda

57

Comparison of Snow Cover from Satellite and Numerical Weather Prediction Models in the Northern Hemisphere and Northern Europe  

Science Journals Connector (OSTI)

Snow cover has a strong effect on the surface and lower atmosphere in NWP models. Because the progress of in situ observations has stalled, satellite-based snow analyses are becoming increasingly important. Currently, there exist several products ...

Otto Hyvrinen; Kalle Eerola; Niilo Siljamo; Jarkko Koskinen

2009-06-01T23:59:59.000Z

58

Multi-region capacity planning model with contracts of varying duration under uncertainty : a satellite capacity acquisition case study  

E-Print Network [OSTI]

This paper highlights the issues associated with and presents a modeling framework for long-term capacity planning problems constrained in a similar fashion to satellite capacity acquisition. Although ambiguities exist, ...

Lydiard, John M., IV

2014-01-01T23:59:59.000Z

59

A NS-2 Simulation model of DVB-S2/RCS Satellite network Thierry Gayraud 1,2  

E-Print Network [OSTI]

A NS-2 Simulation model of DVB-S2/RCS Satellite network Thierry Gayraud 1,2 , Lionel Bertaux1 and it is not possible to enlarge the experimentation due to its induced cost. Running simulation model over Network. The second part is focused on the design of our simulation model using NS-2 simulation tool. The third part

Paris-Sud XI, Université de

60

Assimilation of satellite images into a sediment transport model of Lake Michigan.  

SciTech Connect (OSTI)

In this paper we develop and examine several schemes for combining daily images obtained from the Sea-viewing Wide Field Spectrometer (SeaWiFS) with a two-dimensional sediment transport model of Lake Michigan. We consider two data assimilation methods, direct insertion and a kriging-based approach, and perform a forecasting study focused on a 2-month period in spring 1998 when a large storm caused substantial amounts of sediment resuspension and horizontal sediment transport in the lake. By beginning with the simplest possible forecast method and sequentially adding complexity we are able to assess the improvements offered by combining the satellite data with the numerical model. In our application, we find that data assimilation schemes that include both the data and the lake dynamics improve forecast root mean square error by 40% over purely model-based approaches and by 20% over purely data-based approaches.

Stroud, J.; Lesht, B.; Beletsky, D.; Stein, M.; Univ. of Pennsylvania; NOAA; Univ. of Michigan; Univ. of Chicago

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Modelling electron distributions within ESA's Gaia satellite CCD pixels to mitigate radiation damage  

E-Print Network [OSTI]

The Gaia satellite is a high-precision astrometry, photometry and spectroscopic ESA cornerstone mission, currently scheduled for launch in 2012. Its primary science drivers are the composition, formation and evolution of the Galaxy. Gaia will achieve its unprecedented positional accuracy requirements with detailed calibration and correction for radiation damage. At L2, protons cause displacement damage in the silicon of CCDs. The resulting traps capture and emit electrons from passing charge packets in the CCD pixel, distorting the image PSF and biasing its centroid. Microscopic models of Gaia's CCDs are being developed to simulate this effect. The key to calculating the probability of an electron being captured by a trap is the 3D electron density within each CCD pixel. However, this has not been physically modelled for the Gaia CCD pixels. In Seabroke, Holland & Cropper (2008), the first paper of this series, we motivated the need for such specialised 3D device modelling and outlined how its future resu...

Seabroke, G M; Burt, D; Robbins, M S

2009-01-01T23:59:59.000Z

62

Solar: monthly direct normal (DNI) GIS data at 10km resolution for Central  

Open Energy Info (EERE)

for Central for Central America from SUNY Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Central America. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 10 km by 10 km in size. The solar resource value is represented as kilowatt-hours per square meter per day for each month. The data were developed from the State University of New York's (SUNY) GOES satellite solar model. This

63

Solar: monthly global horizontal (GHI) GIS data at 10km resolution for  

Open Energy Info (EERE)

Central America from SUNY Central America from SUNY Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate solar collectors for Central America (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a horizontal flat-plate solar collector, such as a Photovoltaic (PV) solar panel. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 10 km by 10 km in size. The solar resource value is represented as kilowatt-hours per square meter per day for each month. The data were developed from the State University of New York's (SUNY) GOES satellite solar model.

64

A Non-cooperative Differential Game Model for Frequency Reuse Based Channel Allocation in Satellite Networks  

Science Journals Connector (OSTI)

In this paper, channel resource allocation problem for LEO mobile satellite systems is investigated and a new dynamic channel resource allocation scheme is proposed based on differential game. Optimal channel resource allocated to each satellite beams ... Keywords: Differential game, Dynamic channel allocation, LEO, Mobile satellite systems

Haitao Xu, Xianwei Zhou

2014-11-01T23:59:59.000Z

65

Manuscript Submitted to Solar Energy 4/2002 A NEW OPERATIONAL SATELLITE-TO-IRRADIANCE MODEL DESCRIPTION AND VALIDATION  

E-Print Network [OSTI]

Manuscript Submitted to Solar Energy 4/2002 A NEW OPERATIONAL SATELLITE-TO-IRRADIANCE MODEL, OR, USA #12;Manuscript Submitted to Solar Energy 4/2002 ABSTRACT We present a new simple model zenith angle to account for first order solar #12;Manuscript Submitted to Solar Energy 4/2002 geometry

Perez, Richard R.

66

An efficient strategy for the inversion of bidirectional reflectance models with satellite remote sensing data  

SciTech Connect (OSTI)

The angular distribution of radiation scattered by the earth surface contains information on the structural and optical properties of the surface. Potentially, this information may be retrieved through the inversion of surface bidirectional reflectance distribution function (BRDF) models. This report details the limitations and efficient application of BRDF model inversions using data from ground- and satellite-based sensors. A turbid medium BRDF model, based on the discrete ordinates solution to the transport equation, was used to quantify the sensitivity of top-of-canopy reflectance to vegetation and soil parameters. Results were used to define parameter sets for inversions. Using synthetic reflectance values, the invertibility of the model was investigated for different optimization algorithms, surface and sampling conditions. Inversions were also conducted with field data from a ground-based radiometer. First, a soil BRDF model was inverted for different soil and sampling conditions. A condition-invariant solution was determined and used as the lower boundary condition in canopy model inversions. Finally, a scheme was developed to improve the speed and accuracy of inversions.

Privette, J.L.

1994-12-31T23:59:59.000Z

67

km2 | OpenEI  

Open Energy Info (EERE)

79 79 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142280579 Varnish cache server km2 Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (7 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric

68

xu-km-99.PDF  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Updraft and Downdraft Statistics of Simulated Tropical Updraft and Downdraft Statistics of Simulated Tropical and Midlatitude Cumulus Convection K.-M. Xu and D. A. Randall Department of Atmospheric Science Colorado State University Fort Collins, Colorado Introduction The statistics of updrafts and downdrafts were substantially different between tropical/subtropical and midlatitude continental cumulus convection (LeMone and Zipser 1980; Lucas et al. 1994). The Thunderstorm Project (Byers and Braham 1949) provided the only statistics for midlatitude continental convection. Recent aircraft observations over tropical oceans also suggested that the averaged thermal buoyancy of downdrafts was positive and similar to that of updrafts (Jorgensen and LeMone 1989; Lucas et al. 1994; Wei et al. 1998; Igau et al. 1999). Updrafts with negative buoyancies were also frequently observed.

69

Study of Multi-Scale Cloud Processes Over the Tropical Western Pacific Using Cloud-Resolving Models Constrained by Satellite Data  

SciTech Connect (OSTI)

Clouds in the tropical western Pacific are an integral part of the large scale environment. An improved understanding of the multi-scale structure of clouds and their interactions with the environment is critical to the ARM (Atmospheric Radiation Measurement) program for developing and evaluating cloud parameterizations, understanding the consequences of model biases, and providing a context for interpreting the observational data collected over the ARM Tropical Western Pacific (TWP) sites. Three-dimensional cloud resolving models (CRMs) are powerful tools for developing and evaluating cloud parameterizations. However, a significant challenge in using CRMs in the TWP is that the region lacks conventional data, so large uncertainty exists in defining the large-scale environment for clouds. This project links several aspects of the ARM program, from measurements to providing improved analyses, and from cloud-resolving modeling to climate-scale modeling and parameterization development, with the overall objective to improve the representations of clouds in climate models and to simulate and quantify resolved cloud effects on the large-scale environment. Our objectives will be achieved through a series of tasks focusing on the use of the Weather Research and Forecasting (WRF) model and ARM data. Our approach includes: -- Perform assimilation of COSMIC GPS radio occultation and other satellites products using the WRF Ensemble Kalman Filter assimilation system to represent the tropical large-scale environment at 36 km grid resolution. This high-resolution analysis can be used by the community to derive forcing products for single-column models or cloud-resolving models. -- Perform cloud-resolving simulations using WRF and its nesting capabilities, driven by the improved regional analysis and evaluate the simulations against ARM datasets such as from TWP-ICE to optimize the microphysics parameters for this region. A cirrus study (Mace and co-authors) already exists for TWP-ICE using satellite and ground-based observations. -- Perform numerical experiments using WRF to investigate how convection over tropical islands in the Maritime Continent interacts with large-scale circulation and affects convection in nearby regions. -- Evaluate and apply WRF as a testbed for GCM cloud parameterizations, utilizing the ability of WRF to run on multiple scales (from cloud resolving to global) to isolate resolution and physics issues from dynamical and model framework issues. Key products will be disseminated to the ARM and larger community through distribution of data archives, including model outputs from the data assimilation products and cloud resolving simulations, and publications.

Dudhia, Jimy

2013-03-12T23:59:59.000Z

70

Central South Pacific thermocline water circulation from a high-resolution ocean model validated against satellite data  

E-Print Network [OSTI]

with satellite data. We focus on the upper 500 m, where ocean current variability has been barely documented due processes. [3] Neither ocean currents nor ocean temperature vari- ability are well described becauseCentral South Pacific thermocline water circulation from a high-resolution ocean model validated

Paris-Sud XI, Université de

71

A soil moisture assimilation scheme using satellite-retrieved skin temperature in meso-scale weather forecast model  

Science Journals Connector (OSTI)

A thermodynamically consistent soil moisture assimilation scheme for clear sky and snow free conditions has been developed for the meso-scale modeling system in the Arctic region by using satellite-derived skin temperatures. Parallel control and sensitivity modeling experiments were designed and their results demonstrated that the assimilation scheme successfully improves the soil moistures that were deliberately perturbed initially, indicating capability of the scheme to correct bias in the soil moisture initialization. Moreover, the resultant benefit of this assimilation scheme does not only lie in the improvement of soil moisture; the skin temperature also consequently exhibits improvements in a thermodynamic consistency. A real application of the assimilation scheme with satellite-retrieved skin temperature exhibited noticeable positive impacts on the modeling simulation and weather forecast; the model obviously captured meso-scale features of soil moistures as well as the skin temperatures. The warming tendency bias in original model simulations was removed to a considerable extent by this assimilation scheme.

Jing Zhang; Xiangdong Zhang

2010-01-01T23:59:59.000Z

72

Telecommunications: Satellites for Satellites  

Science Journals Connector (OSTI)

... join in an Inter-sputnik system, a rival to the American-dominated Intelsat (International Telecommunications Satellite Consortium), was presented in Vienna by the head of space communications for the ... to bring radio and telephones as well as television to regions where there is no telecommunications at all, has a tiny share of the vote, and Russia itself, were ...

1968-08-31T23:59:59.000Z

73

Silvaco ATLAS model of ESA's Gaia satellite e2v CCD91-72 pixels  

E-Print Network [OSTI]

The Gaia satellite is a high-precision astrometry, photometry and spectroscopic ESA cornerstone mission, currently scheduled for launch in 2012. Its primary science drivers are the composition, formation and evolution of the Galaxy. Gaia will achieve its unprecedented accuracy requirements with detailed calibration and correction for CCD radiation damage and CCD geometric distortion. In this paper, the third of the series, we present our 3D Silvaco ATLAS model of the Gaia e2v CCD91-72 pixel. We publish e2v's design model predictions for the capacities of one of Gaia's pixel features, the supplementary buried channel (SBC), for the first time. Kohley et al. (2009) measured the SBC capacities of a Gaia CCD to be an order of magnitude smaller than e2v's design. We have found the SBC doping widths that yield these measured SBC capacities. The widths are systematically 2 {\\mu}m offset to the nominal widths. These offsets appear to be uncalibrated systematic offsets in e2v photolithography, which could either be du...

Seabroke, G M; Burt, D; Robbins, M S; 10.1117/12.856958

2010-01-01T23:59:59.000Z

74

Physics-Based GOES Satellite Product for Use in NREL's National Solar Radiation Database: Preprint  

SciTech Connect (OSTI)

The National Renewable Energy Laboratory (NREL), University of Wisconsin, and National Oceanic Atmospheric Administration are collaborating to investigate the integration of the Satellite Algorithm for Shortwave Radiation Budget (SASRAB) products into future versions of NREL's 4-km by 4-km gridded National Solar Radiation Database (NSRDB). This paper describes a method to select an improved clear-sky model that could replace the current SASRAB global horizontal irradiance and direct normal irradiances reported during clear-sky conditions.

Sengupta, M.; Habte, A.; Gotseff, P.; Weekley, A.; Lopez, A.; Molling, C.; Heidinger, A.

2014-07-01T23:59:59.000Z

75

A model, a heuristic and a decision support system to solve the scheduling problem of an earth observing satellite constellation  

Science Journals Connector (OSTI)

China plans to launch four small optical satellites and four small SAR satellites to form a natural disaster monitoring constellation. Data can be obtained by the constellation in all weather conditions for disaster alert and environmental damage analysis. The scheduling problem for the constellation consists of selecting and timetabling the observation activities to acquire the requested images of the earth surface and scheduling the download activities to transmit the image files to a set of ground stations. The scheduling problem is required to be solved every day in a typical 1-day horizon and it must respect complex satellite operational constraints as well as request preferences, such as visibility time windows, transition time between consecutive observations or downloads, memory capacity, energy capacity, polygon target requests and priorities. The objective is to maximize the rewards of the images taken and transmitted. We present a nonlinear model of the scheduling problem, develop a priority-based heuristic with conflict-avoided, limited backtracking and download-as-needed features, which produces satisfactory feasible plans in a very short time. A decision support system based on the model and the heuristic is also provided. The system performance shows a significant improvement with respect to faster and better scheduling of an earth observing satellite constellation.

Pei Wang; Gerhard Reinelt; Peng Gao; Yuejin Tan

2011-01-01T23:59:59.000Z

76

A correlated K-distribution model of the heating rates for H[sub 2]O and a molecular mixture in the 0-2500 cm[sup [minus]1] wavelength region in the atmosphere between 0 and 60 km  

SciTech Connect (OSTI)

For this report a prototype infrared radiative transfer model using a correlated k-distribution technique to calculate the transmission between atmospheric levels has been used to calculate the radiative fluxes and heating rates for H[sub 2]O and a mixture of the major molecular absorbers in the atmosphere between 0 and 60 km. The mixture consists of H[sub 2]O, CO[sub 2], O[sub 3], CH[sub 4], and N[sub 2]O. The wave number range considered is 0-2500 cm[sup [minus]1]. The use of the k-distribution method allows 25 cm[sup [minus]1] wave number bins to produce fluxes and heating rates which are within ten percent of the results of detailed line by line calculations.

Grossman, A S; Grant, K E

1992-11-16T23:59:59.000Z

77

Using Satellite Ocean Color Data to Derive an Empirical Model for the Penetration Depth of Solar Radiation (Hp) in the Tropical Pacific Ocean  

E-Print Network [OSTI]

Radiation (Hp) in the Tropical Pacific Ocean RONG-HUA ZHANG State Key Laboratory of Satellite OceanUsing Satellite Ocean Color Data to Derive an Empirical Model for the Penetration Depth of Solar Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, Zhejiang

Chen, .Dake

78

ASES Proc. Solar 2010, Phoenix, AZ HIGH PERFORMANCE MSG SATELLITE MODEL FOR OPERATIONAL  

E-Print Network [OSTI]

Perez State University of New York Atmospheric Sciences Research Center, 251 Fuller Rd Albany, NY, 12203 of global and direct irradiances from Meteosat Second Generation (MSG) satellite data covering Europe. As a result, for each pixel the class id (snow, snow-free land or water, cloud and unclassified) was assigned

Perez, Richard R.

79

Assimilation of satellite reflecance dataa into a dynamical leaf model to infer seasonally varying leaf area for climate and carbon models  

SciTech Connect (OSTI)

Leaf area index is an important input for many climate and carbon models. The widely used leaf area products derived from satellite-observed surface reflectances contain substantial erratic fluctuations in time due to inadequate atmospheric corrections and observational and retrieval uncertainties. These fluctuations are inconsistent with the seasonal dynamics of leaf area, known to be gradual. Their use in process-based terrestrial carbon models corrupts model behavior, making diagnosis of model performance difficult. We propose a data assimilation approach that combines the satellite observations of Moderate Resolution Imaging Spectroradiometer (MODIS) albedo with a dynamical leaf model. Its novelty is that the seasonal cycle of the directly retrieved leaf areas is smooth and consistent with both observations and current understandings of processes controlling leaf area dynamics. The approach optimizes the dynamical model parameters such that the difference between the estimated surface reflectances based on the modeled leaf area and those of satellite observations is minimized. We demonstrate the usefulness and advantage of our new approach at multiple deciduous forest sites in the United States.

Liu, Qing [Georgia Institute of Technology; Gu, Lianhong [ORNL; Dickinson, Robert E. [Georgia Institute of Technology; Tian, Y [Georgia Institute of Technology; Zhou, L [Georgia Institute of Technology; Post, Wilfred M [ORNL

2007-01-01T23:59:59.000Z

80

A GIS tool for the evaluation of the precipitation forecasts of a numerical weather prediction model using satellite data  

Science Journals Connector (OSTI)

In this study, the possibility of implementing Geographic Information Systems (GIS) for developing an integrated and automatic operational system for the real-time evaluation of the precipitation forecasts of the numerical weather prediction model BOLAM (BOlogna Limited Area Model) in Greece, is examined. In fact, the precipitation estimates derived by an infrared satellite technique are used for real-time qualitative and quantitative verification of the precipitation forecasts of the model BOLAM through the use of a GIS tool named as precipitation forecasts evaluator (PFE). The application of the developed tool in a case associated with intense precipitation in Greece, suggested that PFE could be a very important support tool for nowcasting and very short-range forecasting of such events.

Haralambos Feidas; Themistoklis Kontos; Nikolaos Soulakellis; Konstantinos Lagouvardos

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Effect of Terrestrial and Marine Organic Aerosol on Regional and Global Climate: Model Development, Application, and Verification with Satellite Data  

SciTech Connect (OSTI)

In this DOE project the improvements to parameterization of marine primary organic matter (POM) emissions, hygroscopic properties of marine POM, marine isoprene derived secondary organic aerosol (SOA) emissions, surfactant effects, new cloud droplet activation parameterization have been implemented into Community Atmosphere Model (CAM 5.0), with a seven mode aerosol module from the Pacific Northwest National Laboratory (PNNL)???¢????????s Modal Aerosol Model (MAM7). The effects of marine aerosols derived from sea spray and ocean emitted biogenic volatile organic compounds (BVOCs) on microphysical properties of clouds were explored by conducting 10 year CAM5.0-MAM7 model simulations at a grid resolution 1.9???????°????????2.5???????° with 30 vertical layers. Model-predicted relationship between ocean physical and biological systems and the abundance of CCN in remote marine atmosphere was compared to data from the A-Train satellites (MODIS, CALIPSO, AMSR-E). Model simulations show that on average, primary and secondary organic aerosol emissions from the ocean can yield up to 20% increase in Cloud Condensation Nuclei (CCN) at 0.2% Supersaturation, and up to 5% increases in droplet number concentration of global maritime shallow clouds. Marine organics were treated as internally or externally mixed with sea salt. Changes associated with cloud properties reduced (absolute value) the model-predicted short wave cloud forcing from -1.35 Wm-2 to -0.25 Wm-2. By using different emission scenarios, and droplet activation parameterizations, this study suggests that addition of marine primary aerosols and biologically generated reactive gases makes an important difference in radiative forcing assessments. All baseline and sensitivity simulations for 2001 and 2050 using global-through-urban WRF/Chem (GU-WRF) were completed. The main objective of these simulations was to evaluate the capability of GU-WRF for an accurate representation of the global atmosphere by exploring the most accurate configuration of physics options in GWRF for global scale modeling in 2001 at a horizontal grid resolution of 1???????° x 1???????°. GU-WRF model output was evaluated using observational datasets from a variety of sources including surface based observations (NCDC and BSRN), model reanalysis (NCEP/ NCAR Reanalysis and CMAP), and remotely-sensed data (TRMM) to evaluate the ability of GU-WRF to simulate atmospheric variables at the surface as well as aloft. Explicit treatment of nanoparticles produced from new particle formation in GU-WRF/Chem-MADRID was achieved by expanding particle size sections from 8 to 12 to cover particles with the size range of 1.16 nm to 11.6 ???????µm. Simulations with two different nucleation parameterizations were conducted for August 2002 over a global domain at a 4???????º by 5???????º horizontal resolution. The results are evaluated against field measurement data from the 2002 Aerosol Nucleation and Real Time Characterization Experiment (ANARChE) in Atlanta, Georgia, as well as satellite and reanalysis data. We have also explored the relationship between ???¢????????clean marine???¢??????? aerosol optical properties and ocean surface wind speed using remotely sensed data from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on board the CALIPSO satellite and the Advanced Microwave Scanning Radiometer (AMSR-E) on board the AQUA satellite. Detailed data analyses

Meskhidze, Nicholas; Zhang, Yang; Kamykowski, Daniel

2012-03-28T23:59:59.000Z

82

Documentation of high resolution solar resource assessment (10km) for  

Open Energy Info (EERE)

for for Ethiopia provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ethiopia provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected

83

The assimilation of satellite-derived data into a one-dimensional lower trophic level marine ecosystem model  

E-Print Network [OSTI]

The assimilation of satellite-derived data into a one-dimensional lower trophic level marine, Virginia 23062-1346. Email: marjy@vims.edu #12; 2 The assimilation of satellite-derived data of experiments assimilating synthetic and actual satellite-derived data, including total chlorophyll, size

Latour, Robert J.

84

Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope  

SciTech Connect (OSTI)

Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% confidence level upper limits range from about 10{sup -26} cm{sup 3} s{sup -1} at 5 GeV to about 5 x 10{sup -23} cm{sup 3} s{sup -1} at 1 TeV, depending on the dark matter annihilation final state. For the first time, using gamma rays, we are able to rule out models with the most generic cross section ({approx}3 x 10{sup -26} cm{sup 3} s{sup -1} for a purely s-wave cross section), without assuming additional boost factors.

Ackermann, M.; Ajello, M.; /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC; Albert, A.; /Taiwan, Natl. Taiwan U. /Ohio State U.; Atwood, W.B.; /UC, Santa Cruz; Baldini, L.; /INFN, Pisa; Ballet, J.; /DAPNIA, Saclay; Barbiellini, G.; /INFN, Trieste /Trieste U.; Bastieri, D.; /INFN, Padua /Padua U.; Bechtol, K.; /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC; Bellazzini, R.; /INFN, Pisa; Berenji, B.; Blandford, R.D.; Bloom, E.D.; /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC; Bonamente, E.; /INFN, Perugia /Perugia U.; Borgland, A.W.; /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC; Bregeon, J.; /INFN, Pisa; Brigida, M.; /Bari Polytechnic /INFN, Bari; Bruel, P.; /Ecole Polytechnique; Buehler, R.; /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC; Burnett, T.H.; /Washington U., Seattle; Buson, S.; /INFN, Padua /Padua U. /ICE, Bellaterra /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /INFN, Rome /Rome U. /IASF, Milan /IASF, Milan /DAPNIA, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /Artep Inc. /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /ASDC, Frascati /Perugia U. /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /Montpellier U. /Stockholm U. /Stockholm U., OKC /ASDC, Frascati /ASDC, Frascati /Udine U. /INFN, Trieste /Bari Polytechnic /INFN, Bari /Naval Research Lab, Wash., D.C. /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /Montpellier U. /Bari Polytechnic /INFN, Bari /Ecole Polytechnique /NASA, Goddard /Hiroshima U. /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /Bari Polytechnic /INFN, Bari /INFN, Bari /ASDC, Frascati /NASA, Goddard /INFN, Perugia /Perugia U. /Bari Polytechnic /INFN, Bari /Bologna Observ. /Stanford U., HEPL /Taiwan, Natl. Taiwan U. /SLAC /DAPNIA, Saclay /Alabama U., Huntsville; /more authors..

2012-09-14T23:59:59.000Z

85

Different space weather effects in anomalies of the high and low orbital satellites  

Science Journals Connector (OSTI)

Preliminary results of the EU INTAS Project 00810, which aims to improve the methods of safeguarding satellites in the Earths magnetosphere from the negative effects of the space environment, are presented. Anomaly data from the Kosmos series satellites in the period 19711999 are combined in one database, together with similar information on other spacecraft. This database contains, beyond the anomaly information, various characteristics of the space weather: geomagnetic activity indices (Ap, AE and Dst), fluxes and fluences of electrons and protons at different energies, high energy cosmic ray variations and other solar, interplanetary and solar wind data. A comparative analysis of the distribution of each of these parameters relative to satellite anomalies was carried out for the total number of anomalies (about 6000 events), and separately for high (?5000 events) and low (about 800 events) altitude orbit satellites. No relation was found between low and high altitude satellite anomalies. Daily numbers of satellite anomalies, averaged by a superposed epoch method around sudden storm commencements and proton event onsets for high (>1500km) and low (Satellites were divided on several groups according to the orbital characteristics (altitude and inclination). The relation of satellite anomalies to the environmental parameters was found to be different for various orbits that should be taken into account under developing of the anomaly frequency models.

L.I. Dorman; A.V. Belov; E.A. Eroshenko; L.I. Gromova; N. Iucci; A.E. Levitin; M. Parisi; N.G. Ptitsyna; L.A. Pustilnik; M.I. Tyasto; E.S. Vernova; G. Villoresi; V.G. Yanke; I.G. Zukerman

2005-01-01T23:59:59.000Z

86

Dynamical friction on satellite galaxies  

E-Print Network [OSTI]

For a rigid model satellite, Chandrasekhar's dynamical friction formula describes the orbital evolution quite accurately, when the Coulomb logarithm is chosen appropriately. However, it is not known if the orbital evolution of a real satellite with the internal degree of freedom can be described by the dynamical friction formula. We performed N-body simulation of the orbital evolution of a self-consistent satellite galaxy within a self-consistent parent galaxy. We found that the orbital decay of the simulated satellite is significantly faster than the estimate from the dynamical friction formula. The main cause of this discrepancy is that the stars stripped out of the satellite are still close to the satellite, and increase the drag force on the satellite through two mechanisms. One is the direct drag force from particles in the trailing tidal arm, a non-axisymmetric force that slows the satellite down. The other is the indirect effect that is caused by the particles remaining close to the satellite after escape. The force from them enhances the wake caused in the parent galaxy by dynamical friction, and this larger wake in turn slows the satellite down more than expected from the contribution of its bound mass. We found these two have comparable effects, and the combined effect can be as large as 20% of the total drag force on the satellite.

Michiko Fujii; Yoko Funato; Junichiro Makino

2005-11-22T23:59:59.000Z

87

Aerosol indirect effects ? general circulation model intercomparison and evaluation with satellite data  

E-Print Network [OSTI]

Evaluation of HadGEM2 model, Hadley Centre Technical Noteclimate sensitivity in the Hadley Centre climate model, J.DFG). The Met Office Hadley Centre is funded by the Joint

Quaas, Johannes

2010-01-01T23:59:59.000Z

88

Aerosol indirect effects -- general circulation model intercomparison and evaluation with satellite data  

E-Print Network [OSTI]

Evaluation of HadGEM2 model, Hadley Centre Technical Noteclimate sensitivity in the Hadley Centre climate model, J.ETH Zurich, Switzerland 9 Hadley Centre for Climate Change /

Quaas, Johannes

2010-01-01T23:59:59.000Z

89

THE ACCIMA PROJECT COUPLED MODELING OF THE HIGH SOUTHERN LATITUDES K.M. Hines1* , D.H. Bromwich1,2, L.-S. Bai1, J.P. Nicolas1,2, D.M. Holland3, J.M. Klinck4, M. Dinniman4, C. Yoo3, and E.P. Gerber3  

E-Print Network [OSTI]

THE ACCIMA PROJECT ­ COUPLED MODELING OF THE HIGH SOUTHERN LATITUDES K.M. Hines1* , D.H. Bromwich1 including surface and bottom layer formulations; as well as procedures for data assimilation. Numerical balance of the Antarctic ice sheet is critical for projecting global sea-level change. Also, Antarctica

Howat, Ian M.

90

Tropospheric Aerosol Optical Thickness from the GOCART Model and Comparisons with Satellite and Sun Photometer Measurements  

Science Journals Connector (OSTI)

The Georgia Institute of TechnologyGoddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model is used to simulate the aerosol optical thickness ? for major types of tropospheric aerosols including sulfate, dust, organic carbon ...

Mian Chin; Paul Ginoux; Stefan Kinne; Omar Torres; Brent N. Holben; Bryan N. Duncan; Randall V. Martin; Jennifer A. Logan; Akiko Higurashi; Teruyuki Nakajima

2002-02-01T23:59:59.000Z

91

Application of Grossberg and Mingolla Neural Vision Model to Satellite Weather Imagery  

Science Journals Connector (OSTI)

Recent neural models of natural vision systems are defined in sufficiently concrete terms as to be immediately applicable to practical image processing tasks. In particular the Boundary Contour System and Feature...

Steve Lehar; Tim Howells; Ira Smotroff

1990-01-01T23:59:59.000Z

92

An observational study of the South Pacific Convergence Zone using satellite and model re-analysis data  

E-Print Network [OSTI]

Satellite derived wind, rain rate and sea surface temperature data combined with NCEP analysis data are used to examine the structure of the South Pacific Convergence Zone (SPCZ) during La Nina conditions. Annual means indicate that the axes...

Cocks, Stephen Brenton

2004-09-30T23:59:59.000Z

93

Investigation of the Dynamical, Macrophysical and Radiative Properties of High Clouds Combining Satellite Observations and Climate Model Simulations  

E-Print Network [OSTI]

of the physical mechanism governing the fixed anvil temperature (FAT) hypothesis and test of FAT hypothesis with CTT measurements; and 3) the intercomparison of cloud fraction and radiative effects between satellite-based observations and reanalysis product...

Li, Yue

2012-02-14T23:59:59.000Z

94

Consistent patterns of Antarctic ice sheet interannual variations from ENVISAT radar altimetry and GRACE satellite gravimetry  

Science Journals Connector (OSTI)

......radar altimetry and GRACE satellite gravimetry Martin Horwath...regional atmospheric modelling. Satellite altimetry and satellite gravimetry...Centre for Medium-Range Weather Forecasts) variations of...though ENVISAT RA and GRACE satellite gravimetry have their specific......

Martin Horwath; Benot Legrsy; Frdrique Rmy; Fabien Blarel; Jean-Michel Lemoine

2012-05-01T23:59:59.000Z

95

Satellite-Based Modeling of the Carbon Fluxes in Mature Black Spruce Forests in Alaska: A Synthesis of the Eddy Covariance Data and Satellite Remote Sensing Data  

Science Journals Connector (OSTI)

Scaling up of observed point data to estimate regional carbon fluxes is an important issue in the context of the global terrestrial carbon cycle. In this study, the authors proposed a new model to scale up the eddy covariance data to estimate ...

Masahito Ueyama; Yoshinobu Harazono; Kazuhito Ichii

2010-10-01T23:59:59.000Z

96

AbstractThe satellite-borne  

E-Print Network [OSTI]

Abstract­The satellite-borne Scanning for a Satellite Radar Wind Sounder (RAWS) RK Moore, B. Beh Analysis and forecasting using numerical weather models would improve greatly if world wide wind information were available, Lasers on satellites were proposed for this purpose, and the Laser Wind Sounder

Kansas, University of

97

Teleportation of entanglement over 143 km  

E-Print Network [OSTI]

As a direct consequence of the no-cloning theorem, the deterministic amplification as in classical communication is impossible for quantum states. This calls for more advanced techniques in a future global quantum network, e.g. for cloud quantum computing. A unique solution is the teleportation of an entangled state, i.e. entanglement swapping, representing the central resource to relay entanglement between distant nodes. Together with entanglement purification and a quantum memory it constitutes a so-called quantum repeater. Since the aforementioned building blocks have been individually demonstrated in laboratory setups only, the applicability of the required technology in real-world scenarios remained to be proven. Here we present a free-space entanglement-swapping experiment between the Canary Islands of La Palma and Tenerife, verifying the presence of quantum entanglement between two previously independent photons separated by 143 km. We obtained an expectation value for the entanglement-witness operator, more than 6 standard deviations beyond the classical limit. By consecutive generation of the two required photon pairs and space-like separation of the relevant measurement events, we also showed the feasibility of the swapping protocol in a long-distance scenario, where the independence of the nodes is highly demanded. Since our results already allow for efficient implementation of entanglement purification, we anticipate our assay to lay the ground for a fully-fledged quantum repeater over a realistic high-loss and even turbulent quantum channel.

Thomas Herbst; Thomas Scheidl; Matthias Fink; Johannes Handsteiner; Bernhard Wittmann; Rupert Ursin; Anton Zeilinger

2015-02-06T23:59:59.000Z

98

Contribution to the development of DOE ARM Climate Modeling Best Estimate Data (CMBE) products: Satellite data over the ARM permanent and AMF sites: Final Report  

SciTech Connect (OSTI)

To support the LLNL ARM infrastructure team Climate Modeling Best Estimate (CMBE) data development, the University of North Dakota (UND)'s group will provide the LLNL team the NASA CERES and ISCCP satellite retrieved cloud and radiative properties for the periods when they are available over the ARM permanent research sites. The current available datasets, to date, are as follows: the CERES/TERRA during 200003-200812; the CERES/AQUA during 200207-200712; and the ISCCP during 199601-200806. The detailed parameters list below: (1) CERES Shortwave radiative fluxes (net and downwelling); (2) CERES Longwave radiative fluxes (upwelling) - (items 1 & 2 include both all-sky and clear-sky fluxes); (3) CERES Layered clouds (total, high, middle, and low); (4) CERES Cloud thickness; (5) CERES Effective cloud height; (6) CERES cloud microphysical/optical properties; (7) ISCCP optical depth cloud top pressure matrix; (8) ISCCP derived cloud types (r.g., cirrus, stratus, etc.); and (9) ISCCP infrared derived cloud top pressures. (10) The UND group shall apply necessary quality checks to the original CERES and ISCCP data to remove suspicious data points. The temporal resolution for CERES data should be all available satellite overpasses over the ARM sites; for ISCCP data, it should be 3-hourly. The spatial resolution is the closest satellite field of view observations to the ARM surface sites. All the provided satellite data should be in a format that is consistent with the current ARM CMBE dataset so that the satellite data can be easily merged into the CMBE dataset.

Xie, B; Dong, X; Xie, S

2012-05-18T23:59:59.000Z

99

Observational Systems, Satellite  

Science Journals Connector (OSTI)

Although the first weather satellite, TIROS I, was launched in 1960, the field of satellite-based remote sensing of Earth really began... Remote Sensing, Historical Perspect...

David L. Glackin

2014-01-01T23:59:59.000Z

100

Solar power satellites.  

E-Print Network [OSTI]

??During energy crisis at the end of the Sixties, a new idea to exploit solar energy arose: Solar Power Satellites. These satellites need a huge (more)

Palmas, Alessandro

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Microsoft Word - Ghana_10km_solar_country_report.doc  

Open Energy Info (EERE)

Assessment (SWERA) Assessment (SWERA) High Resolution Solar Radiation Assessment for Ghana Final country report prepared by Christoph Schillings 1 Richard Meyer 2 Franz Trieb 1 1 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Stuttgart, Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Oberpfaffenhofen, Institut für Physik der Atmosphäre, D-82234 Weßling, Germany submitted to UNEP / GEF October 2004 Content 1. Method description (satellite data, GHI-method, DNI-method) 2. Model output (GHI, DNI) 3. Comparison with ground measurements (if available) 4. References Notice This report was prepared as an account of work within the SWERA project funded by GEF / UNEP.

102

Microsoft Word - China_10km_solar_documentation.doc  

Open Energy Info (EERE)

China China Final Report for a Country Assessment prepared by Christoph Schillings 1 Richard Meyer 2 Franz Trieb 1 1 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Stuttgart Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Oberpfaffenhofen Institut für Physik der Atmosphäre, D-82234 Weßling, Germany submitted to UNEP / GEF October 2004 Content 1. Method description (satellite data, GHI-method, DNI-method) 2. Model output (GHI, DNI) 3. Comparison with ground measurements (if available) 4. References Notice This report was prepared for the SWERA project funded by GEF / UNEP. The results presented here were produced by state-of-the-art methods with best-known data. The DLR (Deutsches Zentrum für

103

Microsoft Word - Ethiopia_10km_solar_country_report.doc  

Open Energy Info (EERE)

Ethiopia Ethiopia Final country report prepared by Christoph Schillings 1 Richard Meyer 2 Franz Trieb 1 1 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Stuttgart, Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Oberpfaffenhofen, Institut für Physik der Atmosphäre, D-82234 Weßling, Germany submitted to UNEP / GEF October 2004 Content 1. Method description (satellite data, GHI-method, DNI-method) 2. Model output (GHI, DNI) 3. Comparison with ground measurements (if available) 4. References Notice This report was prepared as an account of work within the SWERA project funded by GEF / UNEP. The results presented here were produced by state-of-the-art methods with best-known data. The

104

Microsoft Word - Nepal_10km_solar_country_report.doc  

Open Energy Info (EERE)

Nepal Nepal Final country report prepared by Christoph Schillings 1 Richard Meyer 2 Franz Trieb 1 1 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Stuttgart, Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Oberpfaffenhofen, Institut für Physik der Atmosphäre, D-82234 Weßling, Germany submitted to UNEP / GEF October 2004 Content 1. Method description (satellite data, GHI-method, DNI-method) 2. Model output (GHI, DNI) 3. Comparison with ground measurements (if available) 4. References Notice This report was prepared as an account of work within the SWERA project funded by GEF / UNEP. The results presented here were produced by state-of-the-art methods with best-known data. The

105

Microsoft Word - Kenya_10km_solar_country_report.doc  

Open Energy Info (EERE)

Kenya Kenya Final country report prepared by Christoph Schillings 1 Richard Meyer 2 Franz Trieb 1 1 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Stuttgart, Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Oberpfaffenhofen, Institut für Physik der Atmosphäre, D-82234 Weßling, Germany submitted to UNEP / GEF October 2004 Content 1. Method description (satellite data, GHI-method, DNI-method) 2. Model output (GHI, DNI) 3. Comparison with ground measurements (if available) 4. References Notice This report was prepared as an account of work within the SWERA project funded by GEF / UNEP. The results presented here were produced by state-of-the-art methods with best-known data. The

106

Data assimilation for crop yield and CO2 fixation monitoring in Asia by a photosynthetic sterility model using satellites and meteorological data  

Science Journals Connector (OSTI)

This study assimilates satellite and meteorological data to monitor grain yields and CO2 fixation by developing a photosynthetic-sterility model that integrates the Asian scale of meteorological data such as solar radiation, air temperature effects on photosynthesis and the Normalised Difference Vegetation Index (NDVI) with a Satellite Pour l'Observation de la Terre (SPOT) VEGETATION sensor. Monitoring crop production using remotely sensed and daily meteorological data can provide an important early warning regarding poor crop production to Asian countries with their still-growing populations. Grain production monitoring would support orderly crisis management to maintain food security in Asia, which is facing climate fluctuations through this century of global warming. A decision-tree method classifies the distribution of crop fields in Asia using Terra Moderate Resolution Imaging Spectroradiometer (MODIS) and SPOT VEGETATION data, which include the NDVI and Land Surface Water Index (LSWI). The air temperature data are available from the National Centres for Environmental Prediction (NCEP) and European Centre for Medium-Range Weather Forecasts (ECMWF). The solar radiation data are supplied by the Geostationary Meteorological Satellite (GMS) Centre and re-analysis data, by the NCEP and ECMWF. This study provides daily distributions of the photosynthesis rate, which is the CO2 fixation in Asian areas combined with the distribution of grain fields.

Daijiro Kaneko; Toshiro Kumakura; Peng Yang

2009-01-01T23:59:59.000Z

107

Chapter 4 The use of satellite surface wind data to improve weather analysis and forecasting at the NASA Data Assimilation Office  

Science Journals Connector (OSTI)

One important application of satellite surface wind observations is to improve the accuracy of weather analyses and forecasts. The first satellite to measure surface wind over the ocean was SeaSat in 1978. The initial impact of satellite surface wind data on weather analysis and forecasting was very small, but extensive research has been conducted since SeaSat to improve data accuracy and utilization of these data in atmospheric models. Satellite surface wind data are now used to detect intense storms over the ocean as well as to improve the overall representation of the wind field in numerical weather prediction models. Satellite wind data contribute to improved warnings for ships at sea and to more accurate global weather forecasts. Experiments with the Goddard Earth Observing System atmospheric general circulation model and data assimilation system indicate that the impact of satellite wind data measured by the National Aeronautics and Space Administration Scatterometer was approximately twice as large as the impact of Special Sensor Microwave Imager or European Remote-sensing Satellite wind data. Locations of cyclones over the ocean were up to 500 km more accurate, and the useful forecast skill in the Southern Hemisphere extratropics was extended by 24 hours.

R. Atlas; R.N. Hoffman

2000-01-01T23:59:59.000Z

108

Solar: monthly and annual average direct normal (DNI) GIS data at 40km for  

Open Energy Info (EERE)

km for km for Sri Lanka from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Sri Lanka (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

109

Solar: monthly direct normal (DNI) GIS data at 40km resolution for  

Open Energy Info (EERE)

40km resolution for 40km resolution for Bangladesh from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Bangladesh. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

110

Solar: monthly global horizontal (GHI) GIS data at 40km resolution for  

Open Energy Info (EERE)

40km resolution for 40km resolution for Bangladesh from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Bangladesh. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

111

Location-specific weather predictions for Sriharikota (13.72N, 80.22E) through numerical atmospheric models during satellite launch campaigns  

Science Journals Connector (OSTI)

Accurate knowledge of different meteorological parameters over a launch site is very crucial for efficient management of satellite launch operations. Local weather over the Indian satellite launch site located at...

D. Bala Subrahamanyam; Radhika Ramachandran; S. Indira Rani

2012-04-01T23:59:59.000Z

112

Brazil Wind Data (40km) from CEPEL | OpenEI  

Open Energy Info (EERE)

40km) from CEPEL 40km) from CEPEL Dataset Summary Description (Abstract): Annual average of the aeolic potential at 50m. Content: wind speed in m/s, power class (7 classes), power density in W/m2 and Weibull k value organized into cells with 40km x 40km (Purpose): The thematic map by code of colors permits quick viewing of all the Brazilian territory dataset. That map indicates, for the height of 50m, the annual average, in W/m2, of wind speed, power class, power density and Weibull k value. (Supplemental Information): The information is organized into cells measuring 10 x 40km. The wind potential maps were calculated from simulations produced by the MesoMap(*) for 360 days, extracted of a period of 15 years of data. The days were chosen by means of random sampling at several heights, so that each month and season be considered in a representative way.

113

E-Print Network 3.0 - aster satellite images Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SATELLITE-AND GROUND-BASED STEREO ANALYSIS OF CLOUDS Gabriela Seiz Summary: and numerical weather prediction models. For the satellite part, coincident images of MISR (on EOS...

114

E-Print Network 3.0 - aster terra satellite Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SATELLITE-AND GROUND-BASED STEREO ANALYSIS OF CLOUDS Gabriela Seiz Summary: and numerical weather prediction models. For the satellite part, coincident images of MISR (on EOS...

115

NOAANASADoD Workshop on Satellite Data Assimilation  

Science Journals Connector (OSTI)

A workshop on the assimilation of satellite sounding information using global forecast and climate models was held at College Park, Maryland, 2325 August 1999. Topics discussed included comparisons of assimilations of satellite retrievals ...

Ronald M. Errico; George Ohring; John Derber; Joanna Joiner

2000-10-01T23:59:59.000Z

116

Tropical precipitation simulated by the NCAR Community Climate Model (CCM3): an evaluation based on TRMM satellite measurements  

E-Print Network [OSTI]

the TRMM Science Data and Information System; the Community Climate Model group at NCAR for developing and assistance with running CCM3; and the Program for Cli- mate Model Diagnosis and Intercomparison at Lawrence Livermore National Laboratory...

Collier, Jonathan Craig

2005-11-01T23:59:59.000Z

117

Moisture Convergence Using Satellite-Derived Wind Fields: A Severe Local Storm Case Study  

Science Journals Connector (OSTI)

Five-minute interval 1 km resolution SMS visible channel data were used to derive low-level wind fields by tracking small cumulus clouds on NASA's Atmospheric and Oceanographic Information Processing System (AOIPS). The satellite-derived wind ...

Andrew J. Negri; Thomas H. Vonder Haar

1980-08-01T23:59:59.000Z

118

Brazil Wind Data (10km) from CEPEL | OpenEI  

Open Energy Info (EERE)

10km) from CEPEL 10km) from CEPEL Dataset Summary Description (Abstract): Annual average of the aeolic potential at 50m. Content: wind speed in m/s, power class (7 classes), power density in W/m2 and Weibull k value organized into cells with 10km x 10km (Purpose): The thematic map by code of colors permits quick viewing of all the Brazilian territory dataset. That map indicates, for the height of 50m, the annual average, in W/m2, of wind speed, power class, power density and Weibull k value (Supplemental Information): The information is organized into cells measuring 10 x 10km. The wind potential maps were calculated from simulations produced by the MesoMap(*) for 360 days, extracted of a period of 15 years of data. The days were chosen by means of random sampling at several heights, so that each month and season be considered in a representative way. MesoMap(*) for 360 days, extracted of a period of 15 years of data. The days were chosen by means of random sampling at several heights, so that each month and season be considered in a representative way.

119

Documentation of high resolution solar resource assessment (10km) for Kenya  

Open Energy Info (EERE)

Kenya Kenya provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Kenya provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

120

Documentation of high resolution solar resource assessment (10km) for Nepal  

Open Energy Info (EERE)

Nepal Nepal provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Nepal provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2002 and 2003. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Documentation of high resolution solar resource assessment (10km) for China  

Open Energy Info (EERE)

China China provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for China provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2002 and 2003. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

122

Evaluating the Vertical Distribution of Ozone and Its Relationship to Pollution Events in Air Quality Models Using Satellite Data  

Science Journals Connector (OSTI)

Most regional scale models that are used for air quality forecasts and ozone source attribution do not adequately capture the distribution of ozone in the mid- and upper troposphere, but it is unclear how this...

Jessica L. Neu; Gregory Osterman

2014-01-01T23:59:59.000Z

123

A New Method to Produce Sea Surface Temperature Using Satellite Data Assimilation into an AtmosphereOcean Mixed Layer Coupled Model  

E-Print Network [OSTI]

A New Method to Produce Sea Surface Temperature Using Satellite Data Assimilation method of producing sea surface temperature (SST) data for numerical weather prediction is sug- gested, which is obtained from the assimilation of satellite-derived SST into an atmosphere­ocean mixed layer

Noh, Yign

124

Offshore wind resources from satellite SAR Charlotte Bay Hasager, Merete Bruun Christiansen, Morten Nielsen,  

E-Print Network [OSTI]

Offshore wind resources from satellite SAR Charlotte Bay Hasager, Merete Bruun Christiansen, Morten ocean wind maps were described. For offshore wind resource estimation based on satellite observations and the near-coastal zone (up to 40 km offshore) is not mapped. In contrast, Envisat ASAR wind maps can

125

Remote monitoring of the earthquake cycle using satellite radar interferometry  

Science Journals Connector (OSTI)

...the gradual build-up of elastic energy in a ca. 70 km wide zone across the North Anatolian Fault. This energy will eventually be released in an...the next 10 years, and perhaps a constellation of Earth monitoring satellites in...

2002-01-01T23:59:59.000Z

126

Frequency (kHz) Round-tripdelay(km)  

E-Print Network [OSTI]

Spectrum Frequency (kHz) Round-tripdelay(km) 100 200 300 400 500 -10 -5 0 5 10 -90 -85 -80 -75 -70 -65 -60 -55 -50 KAIRAKilpisjärvi Atmospheric Imaging Receiver Array Contact: KAIRA Observer in Charge Association KAIRA Kilpisjärvi Atmospheric Imaging Receiver Array 14 March 2013 2012-10-12: First all-sky image

Ulich, Thomas

127

Final Report: Detection and Characterization of Underground Facilities by Stochastic Inversion and Modeling of Data from the New Generation of Synthetic Aperture Satellites  

SciTech Connect (OSTI)

Many clandestine development and production activities can be conducted underground to evade surveillance. The purpose of the study reported here was to develop a technique to detect underground facilities by broad-area search and then to characterize the facilities by inversion of the collected data. This would enable constraints to be placed on the types of activities that would be feasible at each underground site, providing a basis the design of targeted surveillance and analysis for more complete characterization. Excavation of underground cavities causes deformation in the host material and overburden that produces displacements at the ground surface. Such displacements are often measurable by a variety of surveying or geodetic techniques. One measurement technique, Interferometric Synthetic Aperture Radar (InSAR), uses data from satellite-borne (or airborne) synthetic aperture radars (SARs) and so is ideal for detecting and measuring surface displacements in denied access regions. Depending on the radar frequency and the acquisition mode and the surface conditions, displacement maps derived from SAR interferograms can provide millimeter- to centimeter-level measurement accuracy on regional and local scales at spatial resolution of {approx}1-10 m. Relatively low-resolution ({approx}20 m, say) maps covering large regions can be used for broad-area detection, while finer resolutions ({approx}1 m) can be used to image details of displacement fields over targeted small areas. Surface displacements are generally expected to be largest during or a relatively short time after active excavation, but, depending on the material properties, measurable displacement may continue at a decreasing rate for a considerable time after completion. For a given excavated volume in a given geological setting, the amplitude of the surface displacements decreases as the depth of excavation increases, while the area of the discernable displacement pattern increases. Therefore, the ability to detect evidence for an underground facility using InSAR depends on the displacement sensitivity and spatial resolution of the interferogram, as well as on the size and depth of the facility and the time since its completion. The methodology development described in this report focuses on the exploitation of synthetic aperture radar data that are available commercially from a number of satellite missions. Development of the method involves three components: (1) Evaluation of the capability of InSAR to detect and characterize underground facilities ; (2) inversion of InSAR data to infer the location, depth, shape and volume of a subsurface facility; and (3) evaluation and selection of suitable geomechanical forward models to use in the inversion. We adapted LLNL's general-purpose Bayesian Markov Chain-Monte Carlo procedure, the 'Stochastic Engine' (SE), to carry out inversions to characterize subsurface void geometries. The SE performs forward simulations for a large number of trial source models to identify the set of models that are consistent with the observations and prior constraints. The inverse solution produced by this kind of stochastic method is a posterior probability density function (pdf) over alternative models, which forms an appropriate input to risk-based decision analyses to evaluate subsequent response strategies. One major advantage of a stochastic inversion approach is its ability to deal with complex, non-linear forward models employing empirical, analytical or numerical methods. However, while a geomechanical model must incorporate adequate physics to enable sufficiently accurate prediction of surface displacements, it must also be computationally fast enough to render the large number of forward realizations needed in stochastic inversion feasible. This latter requirement prompted us first to investigate computationally efficient empirical relations and closed-form analytical solutions. However, our evaluation revealed severe limitations in the ability of existing empirical and analytical forms to predict deformations from undergro

Foxall, W; Cunningham, C; Mellors, R; Templeton, D; Dyer, K; White, J

2012-02-27T23:59:59.000Z

128

Hypervelocity launch capabilities to over 10 km/s  

SciTech Connect (OSTI)

Very high pressure and acceleration is necessary to launch flier plates to hypervelocities. In addition, the high pressure loading must be uniform, structured, and shockless, i.e., time-dependent to prevent the flier plate from either fracturing or melting. In this paper, a novel technique is described which allows the use of megabar level loading pressures, and 10{sup 9} g acceleration to launch intact flier plates to velocities of 12.2 km/s. 32 refs., 2 figs.

Chhabildas, L.C.

1991-01-01T23:59:59.000Z

129

Investigation of Low-Cloud Characteristics Using Mesoscale Numerical Model Data for Improvement of Fog-Detection Performance by Satellite Remote Sensing  

Science Journals Connector (OSTI)

The comprehensive relationship between meteorological conditions and whether low water cloud touches the surface, particularly at sea, is examined with the goal of improving low-cloud detection by satellite. Gridpoint-value data provided by an ...

Haruma Ishida; Kentaro Miura; Teruaki Matsuda; Kakuji Ogawara; Azumi Goto; Kuniaki Matsuura; Yoshiko Sato; Takashi Y. Nakajima

2014-10-01T23:59:59.000Z

130

Satellite Data Assimilation in Numerical Weather Prediction Models. Part II: Uses of Rain-Affected Radiances from Microwave Observations for Hurricane Vortex Analysis  

Science Journals Connector (OSTI)

A hybrid variational scheme (HVAR) is developed to produce the vortex analysis associated with tropical storms. This scheme allows for direct assimilation of rain-affected radiances from satellite microwave instruments. In the HVAR, the ...

Fuzhong Weng; Tong Zhu; Banghua Yan

2007-11-01T23:59:59.000Z

131

Solar: monthly and annual average latitude tilt GIS data at 40km resolution  

Open Energy Info (EERE)

Ghana from NREL Ghana from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for flat-plate collectors tilted at latitude for Ghana. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to

132

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

Ethiopia from NREL Ethiopia from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Ethiopia. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

133

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Nepal from NREL Nepal from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Nepal. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

134

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

Ghana from NREL Ghana from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Ghana. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

135

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Ghana from NREL Ghana from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate collectors for Ghana. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

136

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

Brazil from NREL Brazil from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Brazil. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

137

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Brazil from NREL Brazil from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Brazil. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

138

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

Kenya from NREL Kenya from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Kenya. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

139

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

Nepal from NREL Nepal from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Nepal. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

140

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Kenya from NREL Kenya from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Kenya. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Sri Lanka from NREL Sri Lanka from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate collectors, for Sri Lanka (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

142

Science satellites seek Santa  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Science satellites seek Santa Science satellites seek Santa Science satellites seek Santa Los Alamos scientists will use two advanced science satellites to mark the course taken by the elfin traveler. December 16, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Contact Nancy Ambrosiano Communications Office

143

Gamma-ray burst data from DMSP satellites  

SciTech Connect (OSTI)

A number of gamma-ray bursts have been detected by means of gamma-ray detectors aboard three Air Force Defense Meteorological Satellite Program (DMSP) satellites, in polar orbits at 800 km altitude. The gamma-ray data have a 2-second resolving time, and are usually telemetered in 5 energy bins in the range 50--1000 keV. Although it is not possible to detect gamma-ray bursts when the DMSP satellites are passing through the radiation belt or the South Atlantic Anomaly, or when the source is obscured by the Earth, a number of gamma-ray bursts have been detected by two or even three of the satellites. The DMSP data may be of considerable, assistance in evaluating time histories, locations, and spectra of gamma-ray bursts.

Terrell, J.; Klebesadel, R.W.; Lee, P. (Los Alamos National Lab., NM (United States)); Griffee, J.W. (Sandia National Labs., Albuquerque, NM (United States))

1991-01-01T23:59:59.000Z

144

Gamma-ray burst data from DMSP satellites  

SciTech Connect (OSTI)

A number of gamma-ray bursts have been detected by means of gamma-ray detectors aboard three Air Force Defense Meteorological Satellite Program (DMSP) satellites, in polar orbits at 800 km altitude. The gamma-ray data have a 2-second resolving time, and are usually telemetered in 5 energy bins in the range 50--1000 keV. Although it is not possible to detect gamma-ray bursts when the DMSP satellites are passing through the radiation belt or the South Atlantic Anomaly, or when the source is obscured by the Earth, a number of gamma-ray bursts have been detected by two or even three of the satellites. The DMSP data may be of considerable, assistance in evaluating time histories, locations, and spectra of gamma-ray bursts.

Terrell, J.; Klebesadel, R.W.; Lee, P. [Los Alamos National Lab., NM (United States); Griffee, J.W. [Sandia National Labs., Albuquerque, NM (United States)

1991-12-31T23:59:59.000Z

145

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

49031 49031 Varnish cache server Solar: monthly and annual average direct normal (DNI) GIS data at 40km resolution for China from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for China. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to

146

Phase Characteristics of the ALMA 3 km Baseline Data  

E-Print Network [OSTI]

We present the phase characteristics study of the Atacama Large Millimeter/submillimeter Array (ALMA) long (up to 3 km) baseline, which is the longest baseline tested so far using ALMA. The data consist of long time-scale (10 - 20 minutes) measurements on a strong point source (i.e., bright quasar) at various frequency bands (bands 3, 6, and 7, which correspond to the frequencies of about 88 GHz, 232 GHz, and 336 GHz). Water vapor radiometer (WVR) phase correction works well even at long baselines, and the efficiency is better at higher PWV (>1 mm) condition, consistent with the past studies. We calculate the spatial structure function of phase fluctuation, and display that the phase fluctuation (i.e., rms phase) increases as a function of baseline length, and some data sets show turn-over around several hundred meters to 1 km and being almost constant at longer baselines. This is the first millimeter/submillimeter structure function at this long baseline length, and to show the turn-over of the structure fun...

Matsushita, Satoki; Kawabe, Ryohei; Fomalont, Ed; Barkats, Denis; Corder, Stuartt

2014-01-01T23:59:59.000Z

147

Spatial distribution of the air temperature in mountainous areas using satellite thermal infra-red data  

Science Journals Connector (OSTI)

Understanding the spatial distribution of air temperature in mountainous areas is essential in hydrological modelling. In the Moroccan High-Atlas range, the meteorological stations network is sparse. In order to get additional information, we investigated the thermal infrared data supplied by the Enhanced Thematic Mapper (ETM+) sensor onboard the Landsat 7 satellite. The brightness temperature derived from ETM+ images is used as a proxy for air temperature to set up a model that describes its spatial distribution. This model accounts for sun location and topographic characteristics derived from the SRTM digital elevation model. It was evaluated on the Rheraya watershed, a 225-km2 region located within the semi-arid High-Atlas mountain range, using two different sources of data. The first data set consists in in-situ air temperature collected by meteorological stations installed during the experiment at various altitudes from 1400 to 3200m. The second data set is satellite estimates of snow-covered areas (SCA) derived from MODIS images over the whole catchment at 500m spatial resolution.

Abdelghani Boudhar; Benot Duchemin; Lahoucine Hanich; Gilles Boulet; Abdelghani Chehbouni

2011-01-01T23:59:59.000Z

148

Silicon avalanche photodiode operation and lifetime analysis for small satellites  

E-Print Network [OSTI]

Silicon avalanche photodiodes (APDs) are sensitive to operating temperature fluctuations and are also susceptible to radiation flux expected in satellite-based quantum experiments. We introduce a low power voltage adjusting mechanism to overcome the effects of in-orbit temperature fluctuations. We also present data on the performance of Si APDs after irradiation (gamma-ray and proton beam). Combined with an analysis of expected orbital irradiation, we propose that a Si APD in a 400 km equatorial orbit may operate beyond the lifetime of the satellite.

Tan, Yue Chuan; Cheng, Cliff; Ling, Alexander

2013-01-01T23:59:59.000Z

149

Silicon avalanche photodiode operation and lifetime analysis for small satellites  

E-Print Network [OSTI]

Silicon avalanche photodiodes (APDs) are sensitive to operating temperature fluctuations and are also susceptible to radiation flux expected in satellite-based quantum experiments. We introduce a low power voltage adjusting mechanism to overcome the effects of in-orbit temperature fluctuations. We also present data on the performance of Si APDs after irradiation (gamma-ray and proton beam). Combined with an analysis of expected orbital irradiation, we propose that a Si APD in a 400 km equatorial orbit may operate beyond the lifetime of the satellite.

Yue Chuan Tan; Rakhitha Chandrasekara; Cliff Cheng; Alexander Ling

2013-06-28T23:59:59.000Z

150

Validation of a modified snow cover retrieval algorithm from historical 1-km AVHRR data over the European Alps  

Science Journals Connector (OSTI)

Seasonal snow cover is a valuable indicator of climatic variations due to its sensitivity to temperature and precipitation. Complementary to ground-based station data, satellite time series provide large-scale spatial capabilities. The primary disadvantage of this technique, however, is the relative brevity of records. Only AVHRR offers the opportunity to analyze more than 25years of medium-resolution satellite imagery on a daily basis. AVHRR thereby holds a great potential to detect, map and quantify long-term environmental changes. However, to serve this purpose though, adequate algorithms and careful validation are of major significance. Here, we describe and extensively validate snow cover retrieval from historical 1-km AVHRR data using a stable snow detection algorithm, which allows consistent snow sampling across all AVHRR sensors. As a new asset, a pixel-wise probability map based on logistic regression is provided for each snow mask. The spatial and seasonal validation includes a comparison to MOD10A1 and webcam imagery. In addition, the influence of acquisition geometry and the sensor-to-sensor consistency have been investigated using LANDSAT TM data and a snow climatology based on long-term station data. We conclude that the snow detection algorithm tested allows for a 1-km snow extent climatology to be generated from the 25-year full-resolution AVHRR data archived at the University of Bern with favorable accuracy and stability. Given the importance of mountainous regions for climate change studies, this satellite-based data set could become an important tool for assessing environmental changes in the European Alps.

F. Hsler; T. Jonas; S. Wunderle; S. Albrecht

2012-01-01T23:59:59.000Z

151

Multi-scale Hydrologic Applications of the Latest Satellite Precipitation Products in the Yangtze River Basin using a Distributed Hydrologic Model  

Science Journals Connector (OSTI)

The present study aims to evaluate three global satellite precipitation products (3B42 V7, 3B42 RT and CMORPH) during 2003-2012 for multi-scale hydrologic applications, including annual water budgeting, monthly and daily streamflow simulation, and ...

Zhe Li; Dawen Yang; Bing Gao; Yang Jiao; Yang Hong; Tao Xu

152

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

China from NREL China from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for China. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate influences. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

153

Enhancement of satellite precipitation estimation via unsupervised dimensionality reduction  

SciTech Connect (OSTI)

A methodology to enhance Satellite Precipitation Estimation (SPE) using unsupervised dimensionality reduction (UDR) techniques is developed. This enhanced technique is an extension to the Precipitation Estimation from Remotely Sensed Imagery using an Artificial Neural Network (PERSIANN) and Cloud Classification System (CCS) method (PERSIANN-CCS) enriched using wavelet features combined with dimensionality reduction. Cloud-top brightness temperature measurements from Geostationary Operational Environmental Satellite (GOES-12) are used for precipitation estimation at 4 km 4 km spatial resolutions every 30 min. The study area in the continental United States covers parts of Louisiana, Arkansas, Kansas, Tennessee, Mississippi, and Alabama. Based on quantitative measures, root mean square error (RMSE) and Heidke skill score (HSS), the results show that the UDR techniques can improve the precipitation estimation accuracy. In addition, ICA is shown to have better performance than other UDR techniques; and in some cases, it achieves 10% improvement in the HSS.

Mahrooghy, Majid [Mississippi State University (MSU); Younan, Nicolas H. [Mississippi State University (MSU); Anantharaj, Valentine G [ORNL; Aanstoos, James [Mississippi State University (MSU)

2012-01-01T23:59:59.000Z

154

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Mexico, Central America, and the Caribbean Islands from NREL Mexico, Central America, and the Caribbean Islands from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate collectors, for Mexico, Central America, and the Caribbean Islands. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate

155

National Oceanic and Atmospheric Administration | NOAA Satellite and Information Service Two Orbits, One Mission  

E-Print Network [OSTI]

prepare for tsunami and other dangerous coastal flooding events. Weather Improved satellite data has awareness. SATELLITES PROVIDE 93% OF THE DATA used in global weather models along with global live data relies on NOAA satellite data for accurate weather models and mission planning. Major cities use data

156

Globally Gridded Satellite Observations for Climate Studies  

E-Print Network [OSTI]

of the first U.S. weather satellite, questions on how toon operational weather satellites that were not designed forweather and short-term climate applications whereas satellite

2011-01-01T23:59:59.000Z

157

IKONOS Stereo Satellite Imagery | Open Energy Information  

Open Energy Info (EERE)

Satellite Imagery Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: IKONOS Stereo Satellite Imagery Author Satellite Imaging Corperation Published...

158

Color Dependence in the Spatial Distribution of Satellite Galaxies  

E-Print Network [OSTI]

We explore the color dependence of the radial profile of satellite galaxies around isolated parent galaxies. Samples of potential satellites selected from large galaxy redshift surveys are significantly contaminated by interlopers -- objects not bound to the parent galaxy. We use the Sloan Digital Sky Survey to estimate the interloper fraction in samples of candidate satellite galaxies. We show that samples of red and blue satellites have different interloper populations: a larger fraction of blue galaxies are likely to be interlopers compared to red galaxies. Both with and without interloper subtraction, the radial profile of blue satellites is significantly shallower than that of red satellites. In addition, while red and blue primaries have different interloper fractions, the slope of the corrected radial profiles are consistent after interloper correction. We discuss the implications of these results for galaxy formation models.

Jacqueline Chen

2007-11-07T23:59:59.000Z

159

Geomagnetism in the satellite era  

Science Journals Connector (OSTI)

......provide data on space weather on Mars. The new satellite era Our desire to...related to climate and weather and will also have...areas, such as space weather and radiation hazards...developments Current satellite missions and associated......

Kathryn A Whaler

2007-04-01T23:59:59.000Z

160

Earth Observing and Weather Satellites  

Science Journals Connector (OSTI)

In 2011, dozens of satellites are collecting measurements on the atmosphere, continents ... operate many of them. In many cases, satellite data is sold to companies that analyze ... sell these. A good example is ...

Richard Schmude Jr.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

New constraints on coupled dark energy from the Planck satellite experiment  

Science Journals Connector (OSTI)

We present new constraints on coupled dark energy from the recent measurements of the cosmic microwave background anisotropies from the Planck satellite mission. We found that a coupled dark energy model is fully compatible with the Planck measurements, deriving a weak bound on the dark matterdark energy coupling parameter ?=-0.49-0.31+0.19 at 68%C.L. Moreover if Planck data are fitted to a coupled dark energy scenario, the constraint on the Hubble constant is relaxed to H0=72.1-2.3+3.2??km/s/Mpc, solving the tension with the Hubble Space Telescope (HST) value. We show that a combined PLANCK+HST analysis provides significant evidence for coupled dark energy finding a nonzero value for the coupling parameter ?, with -0.90Survey, the Sloan Digital Sky Survey and the Baron Oscillation Spectroscopic Survey.

Valentina Salvatelli; Andrea Marchini; Laura Lopez-Honorez; Olga Mena

2013-07-24T23:59:59.000Z

162

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Ethiopia from NREL Ethiopia from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Ethiopia. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the

163

Ocean Surface Currents From Geostationary Satellite SST  

E-Print Network [OSTI]

Ocean Surface Currents From Geostationary Satellite SST -We are implementing and evaluating a feature tracking approach to estimate ocean surface currents. - This approach allows us to estimate://cioss.coas.oregonstate.edu/ Ocean surface currents (vectors) derived from SST (background) modeled fields along the west coast of U

Kurapov, Alexander

164

Contribution of Alaskan glaciers to sea-level rise derived from satellite imagery  

E-Print Network [OSTI]

1 Contribution of Alaskan glaciers to sea-level rise derived from satellite imagery BERTHIER E.1 level rise derived from satellite imagery. Nature Geoscience, 3(2), 92-95, doi: 10.1038/ngeo737, 2010 glaciers lost 41.9 ± 8.6 km3 yr-1 of water, and contributed 0.12 ± 0.02mm yr-1 to sea-level rise, 34% less

Paris-Sud XI, Université de

165

Solar: monthly and annual average latitude tilt GIS data at 40km resolution  

Open Energy Info (EERE)

China from NREL China from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for flat-plate collectors tilted at latitude for China. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations

166

Occultation Evidence for a Satellite of the Trojan Asteroid (911) Agamemnon  

E-Print Network [OSTI]

On 2012 January 19, observers in the northeastern United States of America observed an occultation of 8.0-mag HIP 41337 star by the Jupiter-Trojan (911) Agamemnon, including one video recorded with a 36cm telescope that shows a deep brief secondary occultation that is likely due to a satellite, of about 5 km (most likely 3 to 10 km) across, at 278 km $\\pm$ 5 km (0.0931 arcsec) from the asteroid's center as projected in the plane of the sky. A satellite this small and this close to the asteroid could not be resolved in the available VLT adaptive optics observations of Agamemnon recorded in 2003. The outline of Agamemnon is fit well by an ellipse with dimensions 190.6 $\\pm$ 0.9 km by 143.8 $\\pm$ 1.5 km. The angular diameter of HIP 41337 was found to be 0.5 $\\pm$ 0.1 milli-arcsec. After (624) Hektor, this could be the second Jupiter Trojan asteroid known to possess a small satellite.

Timerson, Bradley; Conard, Steven; Dunham, David W; Herald, David; Tolea, Alin; Marchis, Franck

2013-01-01T23:59:59.000Z

167

PhD Student Position Vacancy Satellite Humidity Climate Data Records  

E-Print Network [OSTI]

's objective is to improve weather and climate predictions with the help of satellite data, particularly from1 PhD Student Position Vacancy Satellite Humidity Climate Data Records Climate change is a key satellite measurements of atmospheric humidity and clouds, and with climate model results. The group

Hamburg,.Universität

168

Frigatebird behaviour at the oceanatmosphere interface: integrating animal behaviour with multi-satellite data  

Science Journals Connector (OSTI)

...animal behaviour with multi-satellite data Silvia De Monte 1 2 3...nonlinear analysis of multi-satellite data. We find that frigatebirds...often referred to as the ocean weather and covers the mesoscale and...related to phytoplankton. Satellite, in situ and model data show...

2012-01-01T23:59:59.000Z

169

Southern Hemisphere Synoptic Weather from a Satellite Scatterometer  

Science Journals Connector (OSTI)

Analyses of remotely sensed wind vector data from six satellite passes over parts of the Southern Ocean during September 1978 are shown. Winds are input to a planetary boundary layer model to produce sea level pressure fields. These are compared ...

Gad Levy; Robert A. Brown

1991-12-01T23:59:59.000Z

170

Identifying clouds over the Pierre Auger Observatory using infrared satellite data  

SciTech Connect (OSTI)

We describe a new method of identifying night-time clouds over the Pierre Auger Observatory using infrared data from the Imager instruments on the GOES-12 and GOES-13 satellites. We compare cloud identifications resulting from our method to those obtained by the Central Laser Facility of the Auger Observatory. Using our new method we can now develop cloud probability maps for the 3000 km^2 of the Pierre Auger Observatory twice per hour with a spatial resolution of ~2.4 km by ~5.5 km. Our method could also be applied to monitor cloud cover for other ground-based observatories and for space-based observatories.

Abreu, Pedro; et al.,

2013-12-01T23:59:59.000Z

171

Microsoft Word - Sri_Lanka_10km_solar_country_report.doc  

Open Energy Info (EERE)

Lanka Lanka Final country report prepared by Christoph Schillings 1 Richard Meyer 2 Franz Trieb 1 1 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Stuttgart, Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2 Deutsches Zentrum für Luft- und Raumfahrt, DLR-Oberpfaffenhofen, Institut für Physik der Atmosphäre, D-82234 Weßling, Germany submitted to UNEP / GEF October 2004 Content 1. Method description (satellite data, DNI-method, GHI-method) 2. Model output (GHI, DNI) 3. Comparison with ground measurements (if available) 4. References Notice This report was prepared as an account of work within the SWERA project funded by GEF / UNEP. The results presented here were produced by state-of-the-art methods with best-known data. The

172

Generation of a novel 1km NDVI data set over Canada, the northern United States, and Greenland based on historical AVHRR data  

Science Journals Connector (OSTI)

Time series of the Normalized Difference Vegetation Index (NDVI) derived from satellite observations provide important information on the state of terrestrial vegetation over a wide range of spatiotemporal scales. For understanding long-term changes in terrestrial ecosystems (post-1981), data collected by the Advanced Very High Resolution Radiometer (AVHRR) on board the satellites of National Oceanic and Atmospheric Administration (NOAA) series is a unique source of information. In this paper, we describe a new processing methodology for a comprehensive AVHRR data set at 1km spatial resolution acquired over Canada, the northern United States and Greenland post-1981. The methodology incorporates a pre-processing algorithm, Canadian AVHRR Processing System (CAPS), recently developed by the Canada Centre of Remote Sensing (CCRS), which enables highly accurate geolocation and ortho-rectification at efficiency rates of >90%. Once image navigation is completed, our approach consists of five key steps: first, two clear-sky composites for each 10day interval are generated from the forward or backward scattering hemisphere; second, AVHRR Channel 1 and 2 reflectances are normalized to the AVHRR/3 on board NOAA-17 to account for differences in the spectral response function among the AVHRR sensors; third, atmospheric correction is performed using the Simplified Method for Atmospheric correction (SMAC) algorithm, using standard meteorological data sets (water vapor, surface level air pressure, ozone); fourth, NDVI is calculated based on atmospherically corrected Channel 1 and 2 reflectances; and finally, the NDVI is adjusted for directional effects based on the Ross-Thick Li-Sparse Bidirectional Reflectance Distribution Function (BRDF) model. The processed NDVI data are compared to an equivalent spatially and temporally overlapping MODIS NDVI data set from 2001 to 2005 for validation. Results at continental scale indicate that time series of MODIS and AVHRR were similar for a wide range of biomes and generalized ecoregions. Analysis stratified by land cover indicated that the correlation was strongest for homogeneous land cover types, such as cropland, when compared to structurally more diverse classes, such as deciduous broadleaf forests. The comparison of the NDVI at the local scale at seven sites of the Fluxnet Canada Research Network resulted in the correlation coefficient r=0.95. Given confidence in the processing approach, this NDVI data set can be a valuable source of information for climate and vegetation-related studies over Canada and the northern United States.

Fabio M.A. Fontana; Nicholas C. Coops; Konstantin V. Khlopenkov; Alexander P. Trishchenko; Michael Riffler; Michael A. Wulder

2012-01-01T23:59:59.000Z

173

7Tracking a Sea Turtle from a Satellite Day Number Latitude Longitude Distance  

E-Print Network [OSTI]

7Tracking a Sea Turtle from a Satellite Day Number Latitude Longitude Distance (km) 1 0 +5o North in the table above to track the sea turtle from the start of its journey to its end. Use your map to answer these questions: Question 1 - In what part of the world did it begin its trip? Question 2 - Where did the turtle

Christian, Eric

174

A 20-Year Dataset of Downwelling Longwave Flux at the Arctic Surface from TOVS Satellite Data  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

20-Year Dataset of Downwelling Longwave Flux 20-Year Dataset of Downwelling Longwave Flux at the Arctic Surface from TOVS Satellite Data J. Francis Rutgers University New Brunswick, New Jersey A. Schweiger Polar Science Center University of Washington Seattle, Washington J. Key National Oceanic and Atmospheric Administration National Environmental Satellite, Data, and Information Service Madison, Wisconsin Introduction This paper summarizes the progress of a study under way to generate a 20-year dataset of surface downwelling longwave flux (DLF) retrievals from satellite data over the Arctic Ocean. We will produce daily fields between late 1979 and late 1998 on a grid with a spatial resolution of 100 km x 100 km 2 north of 60°N. Surface measurements from the Surface Heat Budget of the Arctic (SHEBA) and the

175

PRODUCING SATELLITE-DERIVED IRRADIANCES IN COMPLEX ARID TERRAIN  

Open Energy Info (EERE)

ASES 2003, Austin TX and submitted for publication in Solar Energy ASES 2003, Austin TX and submitted for publication in Solar Energy PRODUCING SATELLITE-DERIVED IRRADIANCES IN COMPLEX ARID TERRAIN Richard Perez & Marek Kmiecik ASRC, the University at Albany 251 Fuller Rd. Albany, NY 12203 perez@asrc.cestm.albany.edu Pierre Ineichen, CUEPE, University of Geneva 7 Route de Drize 1227 Carouge, Switzerland Pierre.Ineichen@cuepe.unige.ch Marek Kmiecik, ASRC Kathleen Moore, IED 251 Fuller Rd. Albany, NY 12203 moore@iedat.com David Renne & Ray George NREL 1617 Cole Blvd. Golden, CO 80401 drenne / ray_george@nrel.nrel.gov ABSTRACT This paper describes a methodology to correct satellite- derived irradiances over complex terrain. The correction applies to satellite models using visible images from geostationary satellites. 1. DESCRIPTION OF CURRENT MODEL

176

Satellite observations of the Agulhas Current system  

Science Journals Connector (OSTI)

...chlorophyll concentration| Satellite observations of the Agulhas...masses. | Laboratory for Satellite Oceanography, Southampton...Temperature Time Factors Weather 10.1098/rsta.2002.1107 Satellite observations of the Agulhas...

2003-01-01T23:59:59.000Z

177

Seismic evidence of negligible water carried below 400-km depth in subducting lithosphere  

Science Journals Connector (OSTI)

... .1038/nature09401 Seismic evidence of negligible water carried below 400-km depth in subducting lithosphereHarry W.Green IIH W

Harry W. Green II; Wang-Ping Chen; Michael R. Brudzinski

2010-10-03T23:59:59.000Z

178

Wind: wind power density maps at 50m above ground and 1km resolution...  

Open Energy Info (EERE)

maps ... Dataset Activity Stream Wind: wind power density maps at 50m above ground and 1km resolution for Ghana from NREL (Abstract):HTMLREMOVEDHTMLREMOVEDRaster GIS data, 50...

179

Wind: wind power density maps at 50 m above ground and 1km resolution...  

Open Energy Info (EERE)

maps ... Dataset Activity Stream Wind: wind power density maps at 50 m above ground and 1km resolution for Cuba from NREL (Abstract):HTMLREMOVEDHTMLREMOVEDRaster GIS data, 50...

180

Aerodynamic Stability of Satellites in Elliptic Low Earth Orbits  

E-Print Network [OSTI]

Topical observations of the thermosphere at altitudes below $200 \\, km$ are of great benefit in advancing the understanding of the global distribution of mass, composition, and dynamical responses to geomagnetic forcing, and momentum transfer via waves. The perceived risks associated with such low altitude and short duration orbits has prohibited the launch of Discovery-class missions. Miniaturization of instruments such as mass spectrometers and advances in the nano-satellite technology, associated with relatively low cost of nano-satellite manufacturing and operation, open an avenue for performing low altitude missions. The time dependent coefficients of a second order non-homogeneous ODE which describes the motion have a double periodic shape. Hence, they will be approximated using Jacobi elliptic functions. Through a change of variables the original ODE will be converted into Hill's ODE for stability analysis using Floquet theory. We are interested in how changes in the coefficients of the ODE affect the ...

Bailey, Matthew; Mancas, Stefan C; Udrea, Bogdan; Umeadi, Uchenna

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

DMSP satellite detections of gamma-ray bursts  

SciTech Connect (OSTI)

Gamma-ray burst detectors are aboard six U. S. Air Force defense Meteorological Satellite Program (DMSP) spacecraft, two of which are currently in use. Their 800-km altitude orbits give a field of view to 117 degrees from the zenith. A great many bursts have been detected, usually in coincidence with detections by GRO or other satellites such as PVO or ULYSSES. The directions of the sources can be determined with considerable accuracy from such correlated observations, even when GRO/BATSE with its directional capabilities is not involved. Thus these DMSP data, especially in conjunction with other observations, should be helpful in trying to understand the true nature of gamma-ray bursts. 8 refs., 5 figs.

Terrell, J.; Lee, P.; Klebesadel, R.W.

1995-12-31T23:59:59.000Z

182

The Distribution of Satellite Galaxies: The Great Pancake  

E-Print Network [OSTI]

The 11 known satellite galaxies within 250 kpc of the Milky Way lie close to a great circle on the sky. We use high resolution N-body simulations of galactic dark matter halos to test if this remarkable property can be understood within the context of the cold dark matter cosmology. We construct halo merger trees from the simulations and use a semianalytic model to follow the formation of satellite galaxies. We find that in all 6 of our simulations, the 11 brightest satellites are indeed distributed along thin, disk-like structures analogous to that traced by the Milky Way's satellites. This is in sharp contrast to the overall distributions of dark matter in the halo and of subhalos within it which, although triaxial, are not highly aspherical. We find that the spatial distribution of satellites is significantly different from that of the most massive subhalos but is similar to that of the subset of subhalos that had the most massive progenitors at earlier times. The elongated disk-like structure delineated by the satellites has its long axis aligned with the major axis of the dark matter halo. We interpret our results as reflecting the preferential infall of satellites along the spines of a few filaments of the cosmic web.

Noam I Libeskind; Carlos S Frenk; Shaun Cole; John C Helly; Adrian Jenkins; Julio F Navarro; Chris Power

2005-03-18T23:59:59.000Z

183

Internal?wave effects on 1000?km oceanic acoustic pulse propagation: Simulation and comparison with experiment  

Science Journals Connector (OSTI)

A recent 1000?km acoustic pulse transmission experiment in the Pacific revealed unexpected fluctuations on received wavefronts including a dominant rapid variation called the broadband fluctuation with time scales less than 10 minutes and spatial scales of less than 60 m; a distinct breakdown of the geometrical optics wavefront pattern and broadening of the wavefront near the transmission final; and a coherent wavefront motion with a timescale near the semi?diurnal tidal period. Parabolic?equation numerical simulations have been carried out which utilize environmental data and which take into account internal?wave?induced sound?speed perturbations obeying the GarrettMunk (GM) spectral model. It is shown that the effects of internal waves can account for the broadband fluctuations the breakdown of the geometrical opticspattern and the wavefront broadening. The sensitivity of these fluctuations to internal?wave energy and modal content is examined. The spectral energy in the GM model at tidal periods proves insufficient to explain the tidal period coherent fluctuations strongly suggesting the influence of an internal tide during the experiment. The simulations allow the estimation of the average travel?time bias caused by internal waves. The simulation results for travel?time wander and bias are compared with analytic calculations based on the path?integral technique.

John A. Colosi; Stanley M. Flatt; Charles Bracher

1994-01-01T23:59:59.000Z

184

A Guide to Weather Satellites  

Science Journals Connector (OSTI)

Whenever there is a live weather satellite image (amateur radio enthusiasts use the term ... comment referred to amateur radio hams discussing the weather around the world in the early 1960s, ... could now be mad...

Lawrence Harris

2010-01-01T23:59:59.000Z

185

Cumulus Geometry from Satellite and Surface Data at the ARM TWP Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cumulus Geometry from Satellite and Surface Data Cumulus Geometry from Satellite and Surface Data at the ARM TWP Site E. I. Kassianov, T. P. Ackerman, and R. T. Marchand Pacific Northwest National Laboratory Richland, Washington Introduction The multi-angle imaging spectrometer (MISR), a sensor on board the earth observing system (EOS) Terra satellite platform, observes reflected radiation in nine directions with high resolution (~0.275 km). The overall mission of the MISR is to provide continuous, global multi-angle measurements of the reflected radiation from the earth's atmosphere and surface, and thereby create a valuable resource for studying their physical properties (Diner et al. 1999). For single-layer marine cumulus clouds, we have demonstrated that satellite-derived basic statistics (mean, variance) of vertical cloud size match closely

186

Satellite-Based Solar Resource Data Sets for India 2002-2012  

SciTech Connect (OSTI)

A new 10-km hourly solar resource product was created for India. This product was created using satellite radiances from the Meteosat series of satellites. The product contains global horizontal irradiances (GHI) and direct normal irradiances (DNI) for the period from 2002 to 2011. An additional solar resource data set covering the period from January 2012 to June 2012 was created solely for validation because this period overlaps ground measurements that were made available from the Indian Ministry of New and Renewable Energy's (MNRE's) National Institute for Solar Energy for five stations that are part of MNRE's solar resource network. These measurements were quality checked using the SERI QC software and used to validate the satellite product. A comparison of the satellite product to the ground measurements for the five stations shows good agreement. This report also presents a comparison of the new version of solar resource data to the previous version, which covered the period from 2002 to 2008.

Sengupta, M.; Perez, R.; Gueymard, C.; Anderberg, M.; Gotseff, P.

2014-02-01T23:59:59.000Z

187

V-163: Red Hat Network Satellite Server Inter-Satellite Sync Remote  

Broader source: Energy.gov (indexed) [DOE]

3: Red Hat Network Satellite Server Inter-Satellite Sync Remote 3: Red Hat Network Satellite Server Inter-Satellite Sync Remote Authentication Bypass V-163: Red Hat Network Satellite Server Inter-Satellite Sync Remote Authentication Bypass May 24, 2013 - 6:00am Addthis PROBLEM: A vulnerability was reported in Red Hat Network Satellite Server PLATFORM: Red Hat Network Satellite (v. 5.3 for RHEL 5) Red Hat Network Satellite (v. 5.4 for RHEL 5) Red Hat Network Satellite (v. 5.4 for RHEL 6) Red Hat Network Satellite (v. 5.5 for RHEL 5) Red Hat Network Satellite (v. 5.5 for RHEL 6) ABSTRACT: The system does not properly validate all Inter-Satellite Sync operations REFERENCE LINKS: SecurityTracker Alert ID: 1028587 RHSA-2013:0848-1 CVE-2013-2056 IMPACT ASSESSMENT: Medium DISCUSSION: It was discovered that Red Hat Network Satellite did not fully check the

188

Mesoscale model cloud scheme assessment using satellite observations Jean-Pierre Chaboureau, Jean-Pierre Cammas, Patrick J. Mascart, and Jean-Pierre Pinty  

E-Print Network [OSTI]

of the convective towers in the generation of synthetic BT maps. INDEX TERMS: 3329 Meteorology and Atmospheric-scale cloudiness in the model. A similar test conducted on the ice water and the liquid water paths confirms Dynamics: Mesoscale meteorology; 3360 Meteorology and Atmospheric Dynamics: Remote sensing; 3354

Chaboureau, Jean-Pierre

189

An inversion technique to retrieve the source of a tracer with an application to synthetic satellite measurements  

Science Journals Connector (OSTI)

...same as that of the satellite. Similarly for the...resolution for both model and satellite is taken as 0.25 for...Centre for Medium-range Weather Forecast (ECMWF...sources and sinks using satellite data: a synthetic inter-comparison...methods for numerical weather prediction. Q. J...

2007-01-01T23:59:59.000Z

190

Solar: monthly latitude tilt GIS data at 40km resolution for Bangladesh  

Open Energy Info (EERE)

latitude tilt GIS data at 40km resolution for Bangladesh latitude tilt GIS data at 40km resolution for Bangladesh from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for flat-plate collectors tilted at latitude for Bangladesh. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The

191

Comparison And Discussion Of The 6 Km Temperature Maps Of The Western Us  

Open Energy Info (EERE)

Comparison And Discussion Of The 6 Km Temperature Maps Of The Western Us Comparison And Discussion Of The 6 Km Temperature Maps Of The Western Us Prepared By The Smu Geothermal Lab And The Usgs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Comparison And Discussion Of The 6 Km Temperature Maps Of The Western Us Prepared By The Smu Geothermal Lab And The Usgs Details Activities (1) Areas (1) Regions (0) Abstract: Interpretations of temperature-at-6 km depth maps for the western US are compared and three areas of difference are discussed in detail. These three areas are critical for EGS resource evaluation yet they are quite different between the two maps. The data in these three areas (the northern Oregon Cascade Range, the Snake River Plain, and the northern Great Basin) bearing on the interpretations are discussed. There is a large

192

960 x 932 km (576 x 559.2 miles) As big across as Texas  

E-Print Network [OSTI]

of Liberty! 25143 Itokowa 0.54 x 0.27 x .21 km (0.324 x 0.162 x 0.126 miles) size of the Golden Gate Bridge

Waliser, Duane E.

193

137Cs Trapped by Biomass within 20 km of the Fukushima Daiichi Nuclear Power Plant  

Science Journals Connector (OSTI)

137Cs Trapped by Biomass within 20 km of the Fukushima Daiichi Nuclear Power Plant ... Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan ...

Akio Koizumi; Tamon Niisoe; Kouji H. Harada; Yukiko Fujii; Ayumu Adachi; Toshiaki Hitomi; Hirohiko Ishikawa

2013-07-26T23:59:59.000Z

194

Solar: monthly and annual latitude tilt horizontal GIS data at 40km  

Open Energy Info (EERE)

latitude tilt horizontal GIS data at 40km latitude tilt horizontal GIS data at 40km resolution for Nepal from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for flat-plate collectors tilted at latitude for Nepal. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The

195

Producing Satellite-Derived Irradiances in Complex Arid Terrain | OpenEI  

Open Energy Info (EERE)

Producing Satellite-Derived Irradiances in Complex Arid Terrain Producing Satellite-Derived Irradiances in Complex Arid Terrain Dataset Summary Description (Abstract): This paper describes a methodology to correct satellite-derived irradiances over complex terrain. The correction applies to satellite models using visible images from geostationary satellites. (Purpose): Solar model documentation Source SUNY Albany Date Released June 26th, 2003 (11 years ago) Date Updated August 29th, 2003 (11 years ago) Keywords methodology solar SWERA UNEP validation Data application/pdf icon Download Report (pdf, 690.1 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period 1999 - 2002 License License Other or unspecified, see optional comment below Comment Please cite publication as follows: Perez, R., Ineichen, P., Moore, K., Kmiecik, M., Renné, D., and George, R. 2002.Producing Satellite-Derived Irradiances in Complex Arid Terrain. ASES 2003, Austin TX and submitted for publication in Solar Energy

196

A technique for determining the structure of cloud systems using satellite radiation data  

E-Print Network [OSTI]

technology, revealed quite vividly the organization of weather systems, verified many of the existing models, and revealed phenomena that previously were unknown. Within a few days after the launch of the first meteorological satellite (TIROS I) on 1...'al frontal wave to the final stage of' the decaying cyclone. I'hey concluded that synoptic-scale weather systems could be monitored with the aid of an ar'. ificial satellite, but the location of the vortex center as indicated on the satellite photo...

Laing, Arthur Ray

2012-06-07T23:59:59.000Z

197

Absorption of solar radiation by the atmosphere as determined using satellite, aircraft, and surface data during the  

E-Print Network [OSTI]

Absorption of solar radiation by the atmosphere as determined using satellite, aircraft overcast conditions the aircraft measurements yield an absorptance of 0.32 0.03 for the layer between the aircraft (0.5­13 km), while the GOES 8 albedo versus surface transmittance analysis gives an absorptance

Dong, Xiquan

198

Brazil Direct Normal Solar Radiation Model (10km) from INPE and...  

Open Energy Info (EERE)

Data Download Download Data URL: http:en.openei.orgdatasetsdataset4378e298-a06a-46c3-a187-6eb50b8699d0resource8e9b8d76-5fdb-4162-9e65-5dc5ccbab8fadownload...

199

Brazil Direct Normal Solar Radiation Model (10km) from INPE and...  

Open Energy Info (EERE)

Shapefile Download Download Shapefile URL: http:en.openei.orgdatasetsdataset4378e298-a06a-46c3-a187-6eb50b8699d0resource70043e8d-e4fe-47b6-a725-18d5d27aaae2download...

200

Modeling Carbon Sequestration over the Large-Scale Amazon Basin, Aided by Satellite Observations. Part I: Wet- and Dry-Season Surface Radiation Budget Flux and Precipitation Variability Based on GOES Retrievals  

Science Journals Connector (OSTI)

In this first part of a two-part investigation, large-scale Geostationary Operational Environmental Satellite (GOES) analyses over the Amaznia region have been carried out for March and October of 1999 to provide detailed information on surface ...

Jiujing Gu; Eric A. Smith; Harry J. Cooper; Andrew Grose; Guosheng Liu; James D. Merritt; Maarten J. Waterloo; Alessandro C. de Arajo; Antonio D. Nobre; Antonio O. Manzi; Jose Marengo; Paulo J. de Oliveira; Celso von Randow; John Norman; Pedro Silva Dias

2004-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Watch out for falling satellites  

Science Journals Connector (OSTI)

... USA 193, its specifications can be better defined. USA 193 was launched on a Boeing Delta 2 rocket, which limits the size of the satellite to between two and ... the NRO cancelled a next-generation reconnaissance technology project, called Future Imagery Architecture, after Boeing had spent more than $4 billion on it, according to the New York Times ...

Eric Hand

2008-01-29T23:59:59.000Z

202

Monitoring Malaria from Operational Satellites  

E-Print Network [OSTI]

& Rainfall (% mean), SUDAN (1984-1987) 95% 115% 73% 51% #12;NDVI in Dry & Wet Ecosystems NDVImax indicates conditions MOISTURE THERMAL VEG. HEALTH #12;1313 Vegetation Health (VH) System · Satellites: NOAA · Sensor: AVHRR · Records: 30-year · Characterize: LAND SURFACE GEENNESS (Chlorophyll) MOISURE (Vigor) THERMAL

Kuligowski, Bob

203

Electronics for Satellite Experiments  

SciTech Connect (OSTI)

The tracking detector for the LAT science instrument on the GLAST mission is an example of a large-scale particle detection system built primarily by particle physicists for space flight within the context of a NASA program. The design and fabrication model in most ways reflected practice and experience from particle physics, but the quality assurance aspects were guided by NASA. Similarly, most of the electronics in the LAT as a whole were designed and built by staff at a particle physics lab. This paper reports on many of the challenges and lessons learned in the experience of designing and building the tracking detector and general LAT electronics for use in the NASA GLAST mission.

Johnson, Robert P.; /UC, Santa Cruz

2006-05-16T23:59:59.000Z

204

Nonperturbative ocean acoustic tomography inversion of 1000?km pulse propagation in the Pacific Ocean  

Science Journals Connector (OSTI)

A nonperturbative inversion was performed of acoustic tomographymeasurements made in the northeastern Pacific Ocean in July 1989 in which acoustic transmissions from a 250?Hz broadband source located near the sound?channel axis were recorded at a long vertical array of hydrophones 1000 km away. In contrast with a conventional inversion this nonperturbative inversion does not assume that travel times are linearly related to the sound?speed deviations from a background sound?speed model. The inversion process involved three steps: (1) Measured pulse travel times and the source and receiver locations were used to determine the range average of the equivalent symmetric sound?slowness profile. That part of the inversion used only curve fitting and Abel transforms and required independent (nontomographic) information only to help identify the pulse arrivals. (2) Under the assumption that the range dependence of sound speed was small we used the reciprocal of the range?averaged sound?slowness profile to approximate the range average of the sound?speed profile. (3) Constraining the sound speed below the sound?channel axis to match climatological data and neglecting the range dependence of sound speed below the sound?channel axis allowed us to estimate the range average of the sound?speed profile above the sound?channel axis. This inversion was compared with the range average of sound speed calculated from CTD measurements made during the experiment over a 10?day period. The agreement was good between 50? and 300?m depths but there were some disagreements near the surface and near the sound?channel axis.

R. Michael Jones; Bruce M. Howe; James A. Mercer; Robert C. Spindel; T. M. Georges

1994-01-01T23:59:59.000Z

205

The University of the West Indies satellite delivery system for continuing engineering education  

Science Journals Connector (OSTI)

The University of the West Indies (UWI) serves 14 territories separated by ocean and spread over a geographical area of about 1500 km in radius. The region would be well served by distance education. In 1983 the University of the West Indies Distance Teaching Experiment (UWIDITE) was launched using satellite communications to link the territories. UWIDITE is mainly an interactive audio system with slow-scan TV, telewriting and computer link-up. In 1986 the Faculty of Engineering embarked on a program of full-motion video continuing engineering education and has since been a regular participant in live interactive video conferences, symposia and other activities via satellite. Previous papers have outlined experiences with satellite delivery of continuing engineering education in the West Indies and it was concluded that the Faculty of Engineering has a pivotal role to play in the development of greater use of satellites in CEE in the region and to serve as a pilot project for full motion video instruction for the University of the West Indies. The full-motion video satellite facilities at present allow for reception only of satellite signals in the C-band range of frequencies. This paper details a system which would allow for transmission as well as reception of both C- and Ku-band signals within the University of the West Indies, and other institutions regionally and internationally.

Clement A.C. lmbert; Ashton J. Parris

1992-01-01T23:59:59.000Z

206

Antarctic Satellite Meteorology: Applications for Weather Forecasting  

Science Journals Connector (OSTI)

For over 30 years, weather forecasting for the Antarctic continent and adjacent Southern Ocean has relied on weather satellites. Significant advancements in forecasting skill have come via the weather satellite. The advent of the high-resolution ...

Matthew A. Lazzara; Linda M. Keller; Charles R. Stearns; Jonathan E. Thom; George A. Weidner

2003-02-01T23:59:59.000Z

207

CCRS Landcover Maps From Satellite Data  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The Canadian Centre for Remote Sensing (CCRS) presents several landcover maps over the SGP CART site area (32-40N, 92-102W) derived from satellite data including AVHRR, MODIS, SPOT vegetation data, and Landsat satellite TM imagery.

Trishchenko, Alexander

208

Satellite Remote Sensing in Offshore Wind Energy  

Science Journals Connector (OSTI)

Satellite remote sensing of ocean surface winds are presented with focus on wind energy applications. The history on operational and research-based satellite ocean wind mapping is briefly described for passive mi...

Charlotte Bay Hasager; Merete Badger; Poul Astrup

2013-01-01T23:59:59.000Z

209

File:NREL-afg-10km-dir.pdf | Open Energy Information  

Open Energy Info (EERE)

afg-10km-dir.pdf afg-10km-dir.pdf Jump to: navigation, search File File history File usage Afghanistan - Annual Direct Normal Solar Radiation Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 472 KB, MIME type: application/pdf) Title Afghanistan - Annual Direct Normal Solar Radiation Description Afghanistan - Annual Direct Normal Solar Radiation Sources National Renewable Energy Laboratory Authors Donna Heimiller Related Technologies Solar, Solar-CSP, Solar-10km Creation Date 2007-06-01 Extent International Countries Afghanistan UN Region Southern Asia File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 15:47, 14 December 2010 Thumbnail for version as of 15:47, 14 December 2010 1,650 × 1,275 (472 KB) MapBot (Talk | contribs) Automated upload from NREL's "mapsearch" data

210

Solar: monthly and annual average direct normal (DNI) GIS data at 40km  

Open Energy Info (EERE)

22 22 Varnish cache server Solar: monthly and annual average direct normal (DNI) GIS data at 40km resolution for Mexico, Central America, and the Caribbean Islands from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Mexico, Central America, and the Caribbean Islands. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is

211

Using daily satellite observations to estimate emissions of short-lived  

E-Print Network [OSTI]

Chapter 4 Using daily satellite observations to estimate emissions of short-lived air pollutants on a mesoscopic scale Abstract Emission inventories of air pollutants are crucial information for pol- icy makers and form important input data for air quality models. Using satellite observations for emission estimates

Haak, Hein

212

New methods for estimating poleward eddy heat transport using satellite altimetry  

E-Print Network [OSTI]

eddy-permitting ocean models (Jayne and Marotzke 2002) and data-assimilation products (Volkov et alNew methods for estimating poleward eddy heat transport using satellite altimetry Shane R. Keating eddy heat transport using satellite altimetry are severely limited by the sparseness

Majda, Andrew J.

213

Impact of satellite based PAR on estimates of terrestrial net primary productivity  

E-Print Network [OSTI]

of the satellite- based estimates of PAR for modelling terrestrial primary productivity. 1. Introduction The global energy is referred to as net primary production (NPP). For terrestrial ecosystems GPP and NPP are givenImpact of satellite based PAR on estimates of terrestrial net primary productivity RACHEL T. PINKER

Montana, University of

214

Dual attitude and parameter estimation of passively magnetically stabilized nano satellites$  

E-Print Network [OSTI]

satellite using few, small sensors. A candidate minimal sensor set would be the spacecraft's own solar attitude sensors, a result of having small budgets for mass and power. Attitude determination can still be performed on a nano satellite with low fidelity sensors, but an accurate model of the spacecraft attitude

215

Data needs for X-ray astronomy satellites  

SciTech Connect (OSTI)

I review the current status of atomic data for X-ray astronomy satellites. This includes some of the astrophysical issues which can be addressed, current modeling and analysis techniques, computational tools, the limitations imposed by currently available atomic data, and the validity of standard assumptions. I also discuss the future: challenges associated with future missions and goals for atomic data collection.

Kallman, T. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2013-07-11T23:59:59.000Z

216

Satellite Application Facility for Numerical Weather Prediction  

E-Print Network [OSTI]

NWP SAF Satellite Application Facility for Numerical Weather Prediction Document NWPSAF-KN-VS-002 Stoffelen KNMI #12;NWP SAF Satellite Application Facility for Numerical Weather Prediction Report of the EUMETSAT Satellite Application Facility on Numerical Weather Prediction (NWP SAF), under the Cooperation

Stoffelen, Ad

217

Applications of satellite remote sensing in numerical weather and climate prediction  

Science Journals Connector (OSTI)

The year 2000 marks the 40th anniversary of the launch of the first weather satellite. The images of cloud systems from the early satellites enabled forecasters to locate and monitor the movements of storms. Today's satellites provide a wealth of quantitative information about the constantly changing state of the Earth's atmosphere, ocean, and land surface. Significant strides are being made by operational centers around the world to effectively use these remotely-sensed observations in forecast models. The satellite measurements are used to initialize, provide boundary conditions for, and verify predictions of models. As an example of the state of the art, this paper reviews how satellite observations are used in the numerical weather and climate prediction models of the U.S. National Weather Service. The National Weather Service, National Centers for Environmental Prediction (NCEP), Environmental Modeling Center (EMC) develops regional and global weather prediction models, coupled ocean-atmosphere models for seasonal to interannual climate predictions, and a coastal ocean forecast model. A three dimensional variational data assimilation system is used to specify the initial conditions for the forecast models. Data from the following satellite instruments are currently used in one or more of these models: High Resolution Infrared Sounder (HIRS), Microwave Sounding Unit (MSU), Advanced Microwave Sounding Unit-A (AMSU-A), Geostationary Operational Environmental Satellites (GOES) sounder, GOES, METEOSAT, and Geostationary Meteorology Satellite (GMS) imagers, Advanced Very High Resolution Radiometer (AVHRR), Special Sensor Microwave/Imager (SSM/I), ESA Remote-sensing Satellite-2 (ERS-2) scatterometer, Solar Backscatter Ultraviolet Spectrometer/2 (SBUV/2), and Oceanic Topography Experiment (TOPEX) and ERS-2 altimeters.

G. Ohring; S. Lord; J. Derber; K. Mitchell; M. Ji

2002-01-01T23:59:59.000Z

218

Satellites of the Outer Planets: Thermal Models  

Science Journals Connector (OSTI)

...sta-bility of hydrates of ammonia and...given to known phase transi-zwn melting behavior of the NH.5-HeO...in which known phase transitions in...profile and melting behavior within such an...chlo-ride-treated sand to hills, curves...

John S. Lewis

1971-06-11T23:59:59.000Z

219

Satellite-based laser windsounder  

SciTech Connect (OSTI)

This is the final report of a one-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project`s primary objective is to determine the technical feasibility of using satellite-based laser wind sensing systems for detailed study of winds, aerosols, and particulates around and downstream of suspected proliferation facilities. Extensive interactions with the relevant operational organization resulted in enthusiastic support and useful guidance with respect to measurement requirements and priorities. Four candidate wind sensing techniques were evaluated, and the incoherent Doppler technique was selected. A small satellite concept design study was completed to identify the technical issues inherent in a proof-of-concept small satellite mission. Use of a Mach-Zehnder interferometer instead of a Fabry-Perot would significantly simplify the optical train and could reduce weight, and possibly power, requirements with no loss of performance. A breadboard Mach-Zehnder interferometer-based system has been built to verify these predictions. Detailed plans were made for resolving other issues through construction and testing of a ground-based lidar system in collaboration with the University of Wisconsin, and through numerical lidar wind data assimilation studies.

Schultz, J.F.; Czuchlewski, S.J.; Quick, C.R. [and others

1997-08-01T23:59:59.000Z

220

On the Penetration of the 660 km Phase Change by Mantle Downflows  

E-Print Network [OSTI]

in an upward force which resists the passage of the downwelling through the phase change. Cold material piles up and spreads lat- erally on the phase-change boundary. Eventu- ally, enough cold materialOn the Penetration of the 660 km Phase Change by Mantle Downflows David Bercovici Department

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

ENERGY SPECTRUM OF PRIMARY COSMIC RAYS ABOVE 1017 OBTAINED USING AKENO 20 KM2  

E-Print Network [OSTI]

OG 6.3-3 ENERGY SPECTRUM OF PRIMARY COSMIC RAYS ABOVE 1017 EV OBTAINED USING AKENO 20 KM2 ARRAY M, Tokyo Institute of Technology, Tokyo 152, Japan . Institute of High Energy Physics, Academia Sinica these showers, 60 of them are initiated by primaries with energies larger than 1019 eV. The energy spectrum

222

AN INTRODUCTION TO AUTONOMOUS CONTROL SYSTEMS P.J. Antsaklis, K.M. Passino  

E-Print Network [OSTI]

AN INTRODUCTION TO AUTONOMOUS CONTROL SYSTEMS P.J. Antsaklis, K.M. Passino Dept.of Electrical Pasadena,CA 91109 ABSTRACT An introduction to the area of intelligent autonomous hierarchical control is given. Autonomous control systemsarc designed to perform well under significant uncertainties

Antsaklis, Panos

223

86-km optical link with a resolution of 210-18 frequency transfer.  

E-Print Network [OSTI]

1a , C. Daussy1 , Ch. Chardonnet1 , F. Narbonneau2 , M. Lours2 , and G. Santarelli2 1 Laboratoire de1 86-km optical link with a resolution of 2?10-18 for RF frequency transfer. O. Lopez1 , A. Amy-Klein

Boyer, Edmond

224

Telecom Implementation In The first long range link testing (34 KM) was done in 2002  

E-Print Network [OSTI]

Telecom Implementation In Nepal #12;#12;#12;#12;· The first long range link testing (34 KM and gave their inputs #12;Assembling Grid Antenna at Mohare Relay #12;Mr. Kawasumi and Mr. Fuke Buttrich, the trainer from Denmark #12;Jomsom and Kali Valley as seen from Dhakarjung Relay station #12

Lien, Jyh-Ming

225

Statistics of Satellite Galaxies around Milky-Way-like Hosts  

Science Journals Connector (OSTI)

We calculate the probability that a Milky-Way (MW)-like halo in the standard cosmological model has the observed number of Magellanic Clouds (MCs). The statistics of the number of MCs in the lambda cold dark matter model are in good agreement with observations of a large sample of Sloan Digital Sky Survey (SDSS) galaxies. Under the subhalo abundance matching assumption of a relationship with small scatter between galaxy r-band luminosities and halo internal velocities v max, we make detailed comparisons to similar measurements using SDSS Data Release?7 data by Liu et?al. Models and observational data give very similar probabilities for having zero, one, and two MC-like satellites. In both cases, MW luminosity hosts have just a ~10% chance of hosting two satellites similar to the MCs. In addition, we present a prediction for the probability for a host galaxy to have N sats satellite galaxies as a function of the magnitudes of both the host and satellite. This probability and its scaling with host properties is significantly different from that of mass-selected objects because of scatter in the mass-luminosity relation and because of variations in the star formation efficiency with halo mass.

Michael T. Busha; Risa H. Wechsler; Peter S. Behroozi; Brian F. Gerke; Anatoly A. Klypin; Joel R. Primack

2011-01-01T23:59:59.000Z

226

Satellite Multiangle Cumulus Geometry Retrieval: Case Study  

SciTech Connect (OSTI)

Most satellite-based analyses have been conducted using near nadir-viewing sensors. The Multi-angle Imaging SpectroRadiometer (MISR), recently launched on the National Aeronautics and Space Administration (NASA) Terra platform, provides high-resolution measurements of reflectance at nine different viewing angles. In this study, we examine the possible retrieval of detailed cumulus geometry using the new and unique MISR datasets. We suggested one approach and apply it to an early MISR dataset of small marine cumulus clouds. This paper also presents validation analysis of this technique with both independent ground-based radar measurements and a model-output inverse problem. Collocated and coincident MISR data and ground-based observations at the Atmospheric Radiation Measurement (ARM) Tropical Western Pacific (TWP) site form the basis of this validation. Future work will attempt to test the suggested approach with additional MISR scenes.

Kassianov, Evgueni I.; Ackerman, Thomas P.; Marchand, Roger T.; Ovtchinnikov, Mikhail

2003-02-08T23:59:59.000Z

227

FUSE satellite electrical power subsystem  

SciTech Connect (OSTI)

The Far Ultraviolet Spectroscopic Explorer (FUSE) satellite will be placed into a low earth orbit to investigate astrophysical processes related to the formation and development of the early universe. The FUSE satellite is considered a pathfinder for NASA's Mid-Class Explorers (MIDEX). To reduce mission cost and development time while delivering quality science, NASA has enforced strict cost caps with a clear definition of high-level science objectives. As a result, a significant design driver for the electrical power subsystem (EPS) was to minimize cost. The FUSE EPS is a direct energy transfer, unregulated bus architecture, with batteries directly on the bus and solar array power limted by pulse-width-modulated shunt regulators. The power subsystem electronics (PSE) contains circuitry to control battery charging, provide power to the loads, and provide fault protection. The electronics is based on the PSE which Orbital (formerly, Fairchild Space) designed and built for NASA/GSFC's XTE spacecraft. However, the FUSE PSE design incorporates a number of unique features to meet the mission requirements. To minimize size of the solar panels due to stowed attachment constraints, GaAs/Ge solar cells were selected. This is the first time this type of large area, thinned solar cell with integral bypass diodes are being used for a NASA LEO mission. The solar panels support a satellite load power of 520W. Nickel Cadmium (NiCd) batteries are used which are identical to the RADARSAT-I design, except for different temperature sensors. This is the first mission for which Orbital is using SAFT NiCd batteries. The spacecraft bus, including the EPS, has successfully completed environmental testing and has been delivered for instrument integration. Tradeoffs involved in designing the EPS and selecting components based on the requirements are discussed. Analyses including solar array and battery sizing and energy balance are presented in addition to results from testing the flight hardware.

Roufberg, L.; Noah, K.

1998-07-01T23:59:59.000Z

228

Unsupervised Feature Learning for High-Resolution Satellite Image Classification  

SciTech Connect (OSTI)

The rich data provided by high-resolution satellite imagery allow us to directly model geospatial neighborhoods by understanding their spatial and structural patterns. In this paper we explore an unsupervised feature learning approach to model geospatial neighborhoods for classification purposes. While pixel and object based classification approaches are widely used for satellite image analysis, often these approaches exploit the high-fidelity image data in a limited way. In this paper we extract low-level features to characterize the local neighborhood patterns. We exploit the unlabeled feature measurements in a novel way to learn a set of basis functions to derive new features. The derived sparse feature representation obtained by encoding the measured features in terms of the learned basis function set yields superior classification performance. We applied our technique on two challenging image datasets: ORNL dataset representing one-meter spatial resolution satellite imagery representing five land-use categories and, UCMERCED dataset consisting of 21 different categories representing sub-meter resolution overhead imagery. Our results are highly promising and, in the case of UCMERCED dataset we outperform the best results obtained for this dataset. We show that our feature extraction and learning methods are highly effective in developing a detection system that can be used to automatically scan large-scale high-resolution satellite imagery for detecting large-facility.

Cheriyadat, Anil M [ORNL

2013-01-01T23:59:59.000Z

229

Solar: monthly and annual average latitude tilt GIS data at 40km resolution  

Open Energy Info (EERE)

Mexico, Central America, and the Caribbean Islands from NREL Mexico, Central America, and the Caribbean Islands from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for flat-plate collectors tilted at latitude, for Mexico, Central America, and the Caribbean Islands. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The

230

Solar: monthly and annual average direct normal (DNI) GIS data at 10km  

Open Energy Info (EERE)

601 601 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142256601 Varnish cache server Solar: monthly and annual average direct normal (DNI) GIS data at 10km resolution for Ethiopia from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for Ethiopia for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country.

231

Coastal sea level trends from TOPEX-Poseidon satellite altimetry and tide gauge data in the Mediterranean Sea during the 1990s  

Science Journals Connector (OSTI)

......investigations have tried to link satellite altimetry and tide gauges...a joint analysis of T/P satellite altimetry and monthly tide...error budget. 2 Data 2.1 Satellite altimetry data The T/P data...European Centre for Model and Weather Forecasting (ECMWF) pressure......

S. Mangiarotti

2007-07-01T23:59:59.000Z

232

Kinetics of fuel particle weathering and {sup 90}Sr mobility in the Chernobyl 30-km exclusion zone  

SciTech Connect (OSTI)

Weathering of fuel particles and the subsequent leaching of radionuclides causes {sup 90}Sr mobility in Chernobyl soils to increase with time after disposition. Studies of {sup 90}Sr speciation in soils collected in 1995 and 1996 from the Chernobyl 30-km exclusion zone have been used to calculate rates of fuel particles dissolution under natural environmental conditions. Results show that the velocity of fuel particle dissolution is primarily dependent on the physico-chemical characteristics of the particles and partially dependent on soil acidity. Compared to other areas, the fuel particle dissolution rate is significantly lower in the contaminated areas to the west of the Chernobyl reactor where deposited particles were presumably not oxidized prior to release. The data have been used to derive mathematical models that describe the rate of radionuclide leaching from fuel particles in the exclusion zone and changes in soil-to-plant transfer as a function of particle type and soil pH.

Kashparov, V.A.; Zvarich, S.I.; Protsak, V.P.; Levchuk, S.E. [Ukrainian Inst. of Agricultural Radiology, Kiev (Ukraine); Oughton, D.H. [NLH, Aas (Norway). Lab. for Analytical Chemistry

1999-03-01T23:59:59.000Z

233

Saturn's icy satellites and rings investigated by Cassini - VIMS. III. Radial compositional variability  

E-Print Network [OSTI]

In the last few years Cassini-VIMS, the Visible and Infared Mapping Spectrometer, returned to us a comprehensive view of the Saturn's icy satellites and rings. After having analyzed the satellites' spectral properties (Filacchione et al. (2007a)) and their distribution across the satellites' hemispheres (Filacchione et al. (2010)), we proceed in this paper to investigate the radial variability of icy satellites (principal and minor) and main rings average spectral properties. This analysis is done by using 2,264 disk-integrated observations of the satellites and a 12x700 pixels-wide rings radial mosaic acquired with a spatial resolution of about 125 km/pixel. The comparative analysis of these data allows us to retrieve the amount of both water ice and red contaminant materials distributed across Saturn's system and the typical surface regolith grain sizes. These measurements highlight very striking differences in the population here analyzed, which vary from the almost uncontaminated and water ice-rich surfac...

Filacchione, G; Ciarniello, M; Clark, R N; Cuzzi, J N; Nicholson, P D; Cruikshank, D P; Hedman, M M; Buratti, B J; Lunine, J I; Soderblom, L A; Tosi, F; Cerroni, P; Brown, R H; McCord, T B; Jaumann, R; Stephan, K; Baines, K H; Flamini, E

2012-01-01T23:59:59.000Z

234

Entering the Era of +30-Year Satellite Cloud Climatologies: A North American Case Study  

Science Journals Connector (OSTI)

The emergence of satellite-based cloud records of climate length and quality hold tremendous potential for climate model development, climate monitoring, and studies on global water cycling and its subsequent energetics. This article examines the ...

Michael J. Foster; Andrew Heidinger

2014-09-01T23:59:59.000Z

235

The KM3NeT deep-sea neutrino telescope  

E-Print Network [OSTI]

KM3NeT is a deep-sea research infrastructure being constructed in the Mediterranean Sea. It will host the next generation Cherenkov neutrino telescope and nodes for a deep sea multidisciplinary observatory, providing oceanographers, marine biologists, and geophysicists with real time measurements. The neutrino telescope will complement IceCube in its field of view and exceed it substantially in sensitivity. Its main goal is the detection of high energy neutrinos of astrophysical origin. The detector will have a modular structure with six building blocks, each consisting of about one hundred Detection Units (DUs). Each DU will be equipped with 18 multi-PMT digital optical modules. The first phase of construction has started and shore and deep-sea infrastructures hosting the future KM3NeT detector are being prepared offshore Toulon, France and offshore Capo Passero on Sicily, Italy. The technological solutions for the neutrino detector of KM3NeT and the expected performance of the neutrino telescope are present...

Margiotta, Annarita

2014-01-01T23:59:59.000Z

236

Satellite Ecology: The Dearth of Environment Dependence  

E-Print Network [OSTI]

Using the Sloan Digital Sky Survey (SDSS) galaxy group catalogue of Yang et al. (2007), we study the average colour and average concentration of satellite galaxies as function of (i) their stellar mass, (ii) their group mass, and (iii) their group-centric radius. We find that the colours and concentrations of satellite galaxies are (almost) completely determined by their stellar mass. In particular, at fixed stellar mass, the average colours and concentrations of satellite galaxies are independent of either halo mass or halo-centric radius. We find clear evidence for mass segregation of satellite galaxies in haloes of all masses, and argue that this explains why satellites at smaller halo-centric radii are somewhat redder and somewhat more concentrated. In addition, the weak colour and concentration dependence of satellite galaxies on halo mass is simply a reflection of the fact that more massive haloes host, on average, more massive satellites. Combining these results with the fact that satellite galaxies are, on average, redder and somewhat more concentrated than central galaxies of the same stellar mass, the following picture emerges: galaxies become redder and somewhat more concentrated once they fall into a bigger halo (i.e., once they become a satellite galaxy). This is a clear manifestation of environment dependence. However, there is no indication that the magnitude of the transformation (or its timescale) depends on environment; a galaxy undergoes a transition when it becomes a satellite, but it does not matter whether it becomes a satellite of a small (Milky Way sized) halo, or of a massive cluster. We discuss the implication of this `dearth' of environment dependence for the physical processes responsible for transforming satellite galaxies.

Frank C. van den Bosch; Anna Pasquali; Xiaohu Yang; H. J. Mo; Simone Weinmann; Daniel H. McIntosh; Daniel Aquino

2008-05-01T23:59:59.000Z

237

Integrated Solar Panel Antennas for Cube Satellites.  

E-Print Network [OSTI]

??This thesis work presents an innovative solution for small satellite antennas by integrating slot antennas and solar cells on the same panel to save small (more)

Mahmoud, Mahmoud N.

2010-01-01T23:59:59.000Z

238

Climate and weather satellites going blind  

Science Journals Connector (OSTI)

By 2020, three-quarters of the US satellites used to monitor Earth's weather and climate could be out of action

2012-01-01T23:59:59.000Z

239

LBL RUNAROUND RESULTS 3.00 km (1.86 mi) October 11, 1996 Dummy first body page  

E-Print Network [OSTI]

LBL RUNAROUND RESULTS 3.00 km (1.86 mi) October 11, 1996 page 0 Dummy first body page #12;LBL RUNAROUND RESULTS 3.00 km (1.86 mi) October 11, 1996 page 1 Place Time Name Group Group Place 1 9:35.6 Place Time Name Group Group Place #12;LBL RUNAROUND RESULTS 3.00 km (1.86 mi) October 11, 1996 page 2

240

Characterizing switching problems in low earth orbit satellite constellations with satellite failures  

E-Print Network [OSTI]

CHARACTERIZING SWITCHING PROBLEMS IN LOW EARTH ORBIT SATELLITE CONSTELLATIONS WITH SATELLITE FAILURES A Thesis by BRANDON SCOTT WADSWORTH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1999 Major Subject: Computer Science CHARACTERIZING SWITCHING PROBLEMS IN LOW EARTH ORBIT SATELLITE CONSTELLATIONS WITH SATELLITE FAILURES A Thesis By BRANDON SCOTT WADSWORTH Submitted to Texas...

Wadsworth, Brandon Scott

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

CONSTRAINTS ON OH MEGAMASER EXCITATION FROM A SURVEY OF OH SATELLITE LINES  

SciTech Connect (OSTI)

We report the results of a full-Stokes survey of all four 18 cm OH lines in 77 OH megamasers (OHMs) using the Arecibo Observatory. This is the first survey of OHMs that included observations of the OH satellite lines; only four of the 77 OHMs have existing satellite line observations in the literature. Satellite line emission is detected in five sources, three of which are redetections of previously published sources. The two sources with new detections of satellite line emission are IRAS F10173+0829, which was detected at 1720 MHz, and IRAS F15107+0724, for which both the 1612 MHz and 1720 MHz lines were detected. In IRAS F15107+0724, the satellite lines are partially conjugate, as 1720 MHz absorption and 1612 MHz emission have the same structure at some velocities within the source, along with additional broader 1612 MHz emission. This is the first observed example of conjugate satellite lines in an OHM. In the remaining sources, no satellite line emission is observed. The detections and upper limits are generally consistent with models of OHM emission in which all of the 18 cm OH lines have the same excitation temperature. There is no evidence for a significant population of strong satellite line emitters among OHMs.

McBride, James; Heiles, Carl [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Elitzur, Moshe, E-mail: jmcbride@astro.berkeley.edu [Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055 (United States)

2013-09-01T23:59:59.000Z

242

6Name ________________________________ Satellite technology is everywhere! Right now, there are over 1587 working satellites orbiting  

E-Print Network [OSTI]

, there are over 1587 working satellites orbiting Earth. They represent over $160 billion in assets to the world's economy. In the United States alone, satellites and the many services they provide produce over $225 causing the satellite to burn-up. There are also more `solar storms', flares and CMEs during sunspot

243

Impact of Ice Crystal Roughness on Satellite Retrieved Cloud Properties  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ice Crystal Roughness on Satellite Retrieved Cloud Properties Ice Crystal Roughness on Satellite Retrieved Cloud Properties P. Minnis 1 , P. W. Heck 2 , R. F. Arduini 3 , R. Palikonda 3 , J. K. Ayers 3 , M. M. Khaiyer 3 , P. Yang 4 , Y. Xie 4 3 Science Systems & Applications, Inc. Hampton, VA 1 NASA Langley Research Center Hampton, VA Current Cirrus Models Inadequate Cirrus cloud optical depths τ (heights z e ) are often over (under) estimated when derived from solar reflectances. In situ data suggest smaller asymmetry factors, g, than used in most retrieval models. Multi-angle measurements point to smoother phase functions than for solid, smooth xtals. Calculations show that solid crystals with roughened facets or embedded bubbles --both observed in real cirrus particles-- yield smoother phase functions & smaller g

244

The laser satellites communications and laser noises  

Science Journals Connector (OSTI)

The gain of advanced optical communication systems is reduced by the noise of optical source. Coherent optical communication systems are in particular very sensitive to the noise transmitter and local laser. Optical space communications is on the verge ... Keywords: laser, laser communication, noise limits, optical communication, range loss, satellite communications, satellite systems, signal transfer loss, space channel

Marketa Mazalkova

2008-08-01T23:59:59.000Z

245

Driving Innovation A Satellite Applications TIC  

E-Print Network [OSTI]

Driving Innovation A Satellite Applications TIC 8 December 2011 Michael Lawrence Head of Special Projects #12;Driving Innovation SatApps TIC - goal `generating growth across the economy through new satellite enabled business' · Note : overall TIC strategy goal ­ accelerating the commercialisation

246

Satellite Observations towards the Agriculture applications  

E-Print Network [OSTI]

Satellite Observations towards the Agriculture applications Osamu Ochiai Japan Aerospace Weather (temperature, etc.) #12;Soil Moisture Drought monitoring in North-East Argentina by Aqua with other satellite data Land vegetation, ocean chlorophyll-a, and primary production Sea and Land surface

247

Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2.  

SciTech Connect (OSTI)

More information: http://daymet.ornl.gov Presenter: Ranjeet Devarakonda Environmental Sciences Division Oak Ridge National Laboratory (ORNL) Daymet: Daily Surface Weather Data and Climatological Summaries provides gridded estimates of daily weather parameters for North America, including daily continuous surfaces of minimum and maximum temperature, precipitation occurrence and amount, humidity, shortwave radiation, snow water equivalent, and day length. The current data product (Version 2) covers the period January 1, 1980 to December 31, 2013 [1]. The prior product (Version 1) only covered from 1980-2008. Data are available on a daily time step at a 1-km x 1-km spatial resolution in Lambert Conformal Conic projection with a spatial extent that covers the conterminous United States, Mexico, and Southern Canada as meteorological station density allows. Daymet data can be downloaded from 1) the ORNL Distributed Active Archive Center (DAAC) search and order tools (http://daac.ornl.gov/cgi-bin/cart/add2cart.pl?add=1219) or directly from the DAAC FTP site (http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1219) and 2) the Single Pixel Tool [2] and THREDDS (Thematic Real-time Environmental Data Services) Data Server [3]. The Single Pixel Data Extraction Tool allows users to enter a single geographic point by latitude and longitude in decimal degrees. A routine is executed that translates the (lon, lat) coordinates into projected Daymet (x,y) coordinates. These coordinates are used to access the Daymet database of daily-interpolated surface weather variables. Daily data from the nearest 1 km x 1 km Daymet grid cell are extracted from the database and formatted as a table with one column for each Daymet variable and one row for each day. All daily data for selected years are returned as a single (long) table, formatted for display in the browser window. At the top of this table is a link to the same data in a simple comma-separated text format, suitable for import into a spreadsheet or other data analysis software. The Single Pixel Data Extraction Tool also provides the option to download multiple coordinates programmatically. A multiple extractor script is freely available to download at http://daymet.ornl.gov/files/daymet.zip. The ORNL DAAC s THREDDS data server (TDS) provides customized visualization and access to Daymet time series of North American mosaics. Users can subset and download Daymet data via a variety of community standards, including OPeNDAP, NetCDF Subset service, and Open Geospatial Consortium (OGC) Web Map/Coverage Service. The ORNL DAAC TDS also exposes Daymet metadata through its ncISO service to facilitate harvesting Daymet metadata records into 3rd party catalogs. References: [1] Thornton, P.E., M.M. Thornton, B.W. Mayer, N. Wilhelmi, Y. Wei, R. Devarakonda, and R.B. Cook. 2014. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA. [2] Devarakonda R., et al. 2012. Daymet: Single Pixel Data Extraction Tool. Available on-line [http://daymet.ornl.go/singlepixel.html]. [3] Wei Y., et al. 2014. Daymet: Thematic Real-time Environmental Data Services. Available on-line [http://daymet.ornl.gov/thredds_tiles.html].

Thornton, Peter E [ORNL; Thornton, Michele M [ORNL; Mayer, Benjamin W [ORNL; Wilhelmi, Nate [National Center for Atmospheric Research (NCAR); Wei, Yaxing [ORNL; Devarakonda, Ranjeet [ORNL; Cook, Robert B [ORNL

2014-01-01T23:59:59.000Z

248

The thermal influence of the subducting slab beneath South America from 410 and 660 km discontinuity observations  

E-Print Network [OSTI]

The thermal influence of the subducting slab beneath South America from 410 and 660 km of the depth of the 410 km discontinuity are made beneath central South America in the vicinity of the aseismic form 2000 April 28 SUMMARY Regional seismic network data from deep South American earthquakes

Helffrich, George

249

LBL RUNAROUND RESULTS 3.00 km (1.86 mi) September 22, 1995 Dummy first body page  

E-Print Network [OSTI]

LBL RUNAROUND RESULTS 3.00 km (1.86 mi) September 22, 1995 page 0 Dummy first body page #12;LBL RUNAROUND RESULTS 3.00 km (1.86 mi) September 22, 1995 page 1 Place Time Name Group Group Place 1 9:52.4 Ken:59.7 Derek DeBusschere mi

250

LBL RUNAROUND 3.00km (1.865mi) September 13, 1985 page 1 Place Time Name Group Group  

E-Print Network [OSTI]

LBL RUNAROUND 3.00km (1.865mi) September 13, 1985 page 1 Place Time Name Group Group Place 1 10 course record #12;LBL RUNAROUND 3.00km (1.865mi) September 13, 1985 page 2 Place Time Name Group Group-49 19 100 14:03.5 Joshua W. Burton mi) September 13, 1985 page 3

251

LBL RUNAROUND 3.00 km (1.865 mi) September 19, 1986 page 1 Place Time Name Group Group  

E-Print Network [OSTI]

LBL RUNAROUND 3.00 km (1.865 mi) September 19, 1986 page 1 Place Time Name Group Group Place 1 10 12:53.1 Alan Comnes mi) September 19, 1986 page 2.00 km (1.865 mi) September 19, 1986 page 3 Place Time Name Group Group Place 109 14:30.9 Lutgard

252

Efficiency assessment of using satellite data for crop area estimation in Ukraine  

Science Journals Connector (OSTI)

Abstract The knowledge of the crop area is a key element for the estimation of the total crop production of a country and, therefore, the management of agricultural commodities markets. Satellite data and derived products can be effectively used for stratification purposes and a-posteriori correction of area estimates from ground observations. This paper presents the main results and conclusions of the study conducted in 2010 to explore feasibility and efficiency of crop area estimation in Ukraine assisted by optical satellite remote sensing images. The study was carried out on three oblasts in Ukraine with a total area of 78,500km2. The efficiency of using images acquired by several satellite sensors (MODIS, Landsat-5/TM, AWiFS, LISS-III, and RapidEye) combined with a field survey on a stratified sample of square segments for crop area estimation in Ukraine is assessed. The main criteria used for efficiency analysis are as follows: (i) relative efficiency that shows how much time the error of area estimates can be reduced with satellite images, and (ii) cost-efficiency that shows how much time the costs of ground surveys for crop area estimation can be reduced with satellite images. These criteria are applied to each satellite image type separately, i.e., no integration of images acquired by different sensors is made, to select the optimal dataset. The study found that only MODIS and Landsat-5/TM reached cost-efficiency thresholds while AWiFS, LISS-III, and RapidEye images, due to its high price, were not cost-efficient for crop area estimation in Ukraine at oblast level.

Francisco Javier Gallego; Nataliia Kussul; Sergii Skakun; Oleksii Kravchenko; Andrii Shelestov; Olga Kussul

2014-01-01T23:59:59.000Z

253

Satellite remote sensing, biodiversity research and conservation of the future  

Science Journals Connector (OSTI)

...our special issue entitled Satellite Remote Sensing for Biodiversity...on the future prospects of satellite remote sensing for biodiversity...powerful understanding of weather and climate, along with other...conservation agendas [24]. Satellite remote sensing, on the other...

2014-01-01T23:59:59.000Z

254

Remote Sensing Observations from MTI Satellites and GMS Over Tropical Island of Nauru  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Remote Sensing Observations from MTI Satellites and Remote Sensing Observations from MTI Satellites and GMS Over Tropical Island of Nauru W. M. Porch, P. Chylek, and B. Henderson Los Alamos National Laboratory Los Alamos, New Mexico Introduction The observations of island cloud trails have revealed a strong relationship between the character and frequency of occurrence of island cloud trails and the Tropical Ocean Southern Oscillation (MacFarlane et al. 2004 a, b). Island cloud trails from the U.S. Department of Energy's (DOE) Atmospheric and Radiation Measurement (ARM) facility of Nauru persist for more than 50 km (Nordeen et al. 2001) and resemble ship trail clouds found in the Eastern Ocean Margins (Porch et al. 1999). Island trail clouds are much more frequently observed during La Niña periods than El Niño periods (Figure 1). This

255

File:NREL-afg-10km-tilt.pdf | Open Energy Information  

Open Energy Info (EERE)

tilt.pdf tilt.pdf Jump to: navigation, search File File history File usage Afghanistan - Annual Flat Plate Tilted at Latitude Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 468 KB, MIME type: application/pdf) Title Afghanistan - Annual Flat Plate Tilted at Latitude Description Afghanistan - Annual Flat Plate Tilted at Latitude Sources National Renewable Energy Laboratory Authors Donna Heimiller Related Technologies Solar, Solar-PV, Solar-10km Creation Date 2007-06-01 Extent International Countries Afghanistan UN Region Southern Asia File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 15:30, 14 December 2010 Thumbnail for version as of 15:30, 14 December 2010 1,650 × 1,275 (468 KB) MapBot (Talk | contribs) Automated upload from NREL's "mapsearch" data

256

File:NREL-afg-10km-glo.pdf | Open Energy Information  

Open Energy Info (EERE)

glo.pdf glo.pdf Jump to: navigation, search File File history File usage Afghanistan - Annual Global Horizontal Solar Radiation Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 469 KB, MIME type: application/pdf) Title Afghanistan - Annual Global Horizontal Solar Radiation Description Afghanistan - Annual Global Horizontal Solar Radiation Sources National Renewable Energy Laboratory Authors Donna Heimiller Related Technologies Solar, Solar-GHI, Solar-10km Creation Date 2007-06-01 Extent International Countries Afghanistan UN Region Southern Asia File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 15:30, 14 December 2010 Thumbnail for version as of 15:30, 14 December 2010 1,650 × 1,275 (469 KB) MapBot (Talk | contribs) Automated upload from NREL's "mapsearch" data

257

Solar: monthly direct normal (DNI) GIS data at 10km resolution for  

Open Energy Info (EERE)

for for Bangladesh from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for Bangladesh for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated October 30th, 2007 (7 years ago) Keywords Bangladesh DLR DNI GEF solar SWERA UNEP Data text/csv icon Download Data (csv, 915.2 KiB) application/zip icon Download Shapefile (zip, 488 KiB)

258

Solar: monthly and annual average direct normal (DNI) GIS data at 10km  

Open Energy Info (EERE)

Kenya from DLR Kenya from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for Kenya for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR DNI GEF GIS Kenya solar SWERA UNEP Data text/csv icon Download Data (csv, 2.5 MiB) application/zip icon Download Shapefile (zip, 1.3 MiB)

259

Solar: monthly and annual average direct normal (DNI) GIS data at 10km  

Open Energy Info (EERE)

Ghana from DLR Ghana from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for Ghana for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR DNI Ghana solar SWERA UNEP Data text/csv icon Download Data (csv, 1 MiB) application/zip icon Download Shapefile (zip, 519.6 KiB)

260

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

West China from DLR West China from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for China for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords China CRED CREIA DLR GHI GIS solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 4.4 MiB) text/csv icon Download Data (csv, 8.9 MiB)

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Ghana from DLR Ghana from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Ghana for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the documentation file for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR Ghana GHI GIS solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 504 KiB) text/csv icon Download Data (csv, 1 MiB)

262

Solar: monthly and annual average direct normal (DNI) GIS data at 10km  

Open Energy Info (EERE)

Nepal from DLR Nepal from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for Nepal for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR DNI GIS Nepal solar SWERA UNEP Data text/csv icon Download Data (csv, 1.2 MiB) application/zip icon Download Shapefile (zip, 600.4 KiB)

263

Wind: wind power density maps at 50m above ground and 1km resolution for  

Open Energy Info (EERE)

924 924 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142257924 Varnish cache server Wind: wind power density maps at 50m above ground and 1km resolution for Central America from NREL Dataset Summary Description (Abstract): 50 m wind power density (W/m2) maps of Central America. (Purpose): To provide information on the wind resource potential within the following countries in Central America: Belize, El Salvador, Guatemala, Honduras, and Nicaragua. Source NREL Date Released June 30th, 2004 (10 years ago) Date Updated October 30th, 2007 (7 years ago) Keywords Central America GIS maps NREL SWERA UNEP wind Data application/zip icon Download Maps (zip, 2.2 MiB) Quality Metrics

264

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Ethiopia from DLR Ethiopia from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Ethiopia for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the documentation file for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR Ethiopia GEF GHI GIS solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 2.8 MiB) text/csv icon Download Data (csv, 5.6 MiB)

265

Wind: wind power density GIS data at 50m above ground and 1km resolution  

Open Energy Info (EERE)

7018 7018 Varnish cache server Wind: wind power density GIS data at 50m above ground and 1km resolution for Ghana from NREL Dataset Summary Description (Abstract): Raster GIS data, exported as BIL file, 50 m wind power density for Ghana. Note: BIL files can be converted to raster data in ArcInfo using the IMAGEGRID command. (Purpose): To provide information on the wind resource potential in Ghana. Values range from 0 to 620 meters. (Supplemental Information):***** Spatial Reference Information (Beg) *****Projection ParametersCoordinate System:Projection Transverse MercatorZunits W/m2Units MetersSpheroid: WGS84ParametersScale factor at central meridian: 1.0000Longitude of central meridian: -1 0 0.0Latitude of origin: 8 0 0.0False easting: 0False northing: 0Spatial InformationRaster:Number of Columns:

266

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Nepal from DLR Nepal from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Nepal for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR GEF GHI GIS Nepal solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 593.8 KiB) text/csv icon Download Data (csv, 1.2 MiB)

267

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Sri Lanka from DLR Sri Lanka from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Sri Lanka for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR GHI GIS solar Sri Lanka SWERA UNEP Data text/csv icon Download Data (csv, 296.1 KiB) application/zip icon Download Shapefile (zip, 153.7 KiB)

268

Solar: monthly and annual average direct normal (DNI) GIS data at 10km  

Open Energy Info (EERE)

China from DLR China from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for China for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords China CRED CREIA DLR DNI GEF GIS solar SWERA UNEP Data text/csv icon Download Data (csv, 8.8 MiB) application/zip icon Download Shapefile (zip, 4.4 MiB)

269

Solar: monthly global horizontal (GHI) GIS data at 10km resolution for  

Open Energy Info (EERE)

Bangladesh from DLR Bangladesh from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Bangladesh for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords Bangladesh DLR GEF GHI GIS solar SWERA UNEP Data text/csv icon Download Data (csv, 916.5 KiB) application/zip icon Download Shapefile (zip, 479.3 KiB)

270

Solar: monthly and annual average direct normal (DNI) GIS data at 10km  

Open Energy Info (EERE)

Sri Lanka from DLR Sri Lanka from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Direct Normal Irradiance (DNI) for Sri Lanka for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional background information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR DNI GEF GIS solar Sri Lanka SWERA UNEP Data application/zip icon Download Shapefile (zip, 155.1 KiB) text/csv icon Download Data (csv, 295.7 KiB)

271

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Kenya from DLR Kenya from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Kenya for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the documentation file for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR GEF GHI GIS Kenya NREL solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 1.3 MiB) text/csv icon Download Data (csv, 2.5 MiB)

272

Interactions of tropical synoptic-scale features as viewed from satellite  

E-Print Network [OSTI]

University Chair of Advisory Committee: Dr. James P. McGuirk Tropical synoptic features ? a hypothesized periodic 12 d oscillation over Central America and a 2800 km eastward propagating wave over the eastern Pacific ? are examined in OLR and TOVS... satellite observations. Their interactions with each other, with tropical plumes and intraseasonal oscil- lations are found to be weak. Time series analysis of the area-averaged (140 -40 W and 35'N-35 S) daily OLR for 1984 revealed a persistent 12 d...

Winton, Susan Elizabeth

1991-01-01T23:59:59.000Z

273

Projectile enery dependence of aluminum and silicon K ga sx-ray satellites  

E-Print Network [OSTI]

components comprising the neon Ka x-ray spectra. . 2. Silicon Ku x-ray satellite spectra produced by 2 NeV/amu iona. 3. Crystal spectrometer experimental configuration. . 14 4. Crystal spectrometer with crystal and soller slit adjustments 16 5. Crystal... of x-ray emission contribute to the broadening of the peaks. Typical silicon Km x-ray spectra produced by 2 MeV/amu He, C, 0, Ne, $, and Ar iona are shown in Fig. 2. The first peak on the left corresponds to the normal Ka x-ray line. Each succeeding...

Sonobe, Blake Isamu

2012-06-07T23:59:59.000Z

274

Category:Stereo Satellite Imagery | Open Energy Information  

Open Energy Info (EERE)

page. S Stereo Satellite Imagery Retrieved from "http:en.openei.orgwindex.php?titleCategory:StereoSatelliteImagery&oldid794168" Categories: Geothermal Passive Sensors...

275

Finding the Force -- Consistent Particle Seeding for Satellite Aerodynamics  

E-Print Network [OSTI]

When calculating satellite trajectories in low-earth orbit, engineers need to adequately estimate aerodynamic forces. But to this day, obtaining the drag acting on the complicated shapes of modern spacecraft suffers from many sources of error. While part of the problem is the uncertain density in the upper atmosphere, this works focuses on improving the modeling of interacting rarified gases and satellite surfaces. The only numerical approach that currently captures effects in this flow regime---like self-shadowing and multiple molecular reflections---is known as test-particle Monte Carlo. This method executes a ray-tracing algorithm to follow particles that pass through a control volume containing the spacecraft and accumulates the momentum transfer to the body surfaces. Statistical fluctuations inherent in the approach demand particle numbers in the order of millions, often making this scheme too costly to be practical. This work presents a parallel test-particle Monte Carlo method that takes advantage of b...

Parham, J Brent

2013-01-01T23:59:59.000Z

276

Environmental Effects on Satellite Galaxies: The Link Between Concentration, Size and Colour Profile  

E-Print Network [OSTI]

Using the SDSS DR4 group catalogue of Yang et al. (2007), we investigate sizes, concentrations, colour gradients and surface brightness profiles of central and satellite galaxies. We compare central and satellite galaxies at fixed stellar mass, in order to disentangle environmental from stellar mass dependencies. Early and late type galaxies are defined according to concentration. We find that at fixed stellar mass, late type satellite galaxies have smaller radii and larger concentrations than late type central galaxies. No such differences are found for early-type galaxies. We have also constructed surface brightness and colour profiles for the central and satellite galaxies in our sample. We find that late-type satellite galaxies have a lower surface brightness and redder colours than late-type central galaxies. We show that all observed differences between satellite and central galaxies can be explained by a simple fading model, in which the star formation in the disk decreases over timescales of 2-3 Gyr after a galaxy becomes a satellite. Processes that induce strong morphological changes (e.g. harassment) and processes that strip the galaxy of its entire ISM need not to be invoked in order to explain the environmental dependencies we find.

Simone M. Weinmann; Guinevere Kauffmann; Frank C. van den Bosch; Anna Pasquali; Daniel H. McIntosh; Houjun Mo; Xiaohu Yang; Yicheng Guo

2008-09-13T23:59:59.000Z

277

Equatorial hydrology studies by satellite telemetry  

SciTech Connect (OSTI)

We are using a geostationary satellite functioning as a transponder to collect surface environmental data to describe the fate of soil-borne radionuclides. The remote, former atomic testing grounds at the Enewetak and Bikini Atolls present a difficult environment in which to collect continuous field data. Our land-based, solar-powered microprocessor and environmental data systems remotely measure net and total solar radiation, rain, humidity, temperature, and soil-water potentials. For the past year, our water-flux model predicted wet season plant-transpiration rates nearly equal to the 6- to 7-mm/d evaporation-pan rate, which decreases to 2 to 3 mm/d for the dry season. From the microclimate data we estimated a 1:3 and 1:20 /sup 137/Cs dry-matter concentration ratio, which was later confirmed by radioisotopic analysis. This ratio exacerbates the dose to man from intake of food plants. Nephelometer measurements of airborne particulates presently indicate a minimum respiratory radiological dose.

Clegg, B.; Koranda, J.; Robison, W.; Holladay, G.

1980-12-30T23:59:59.000Z

278

Attitude Control for the TIROS Weather Satellites  

Science Journals Connector (OSTI)

The paper describes the evolution of attitude control techniques within the framework of the TIROS weather satellite program, starting in about 1958, which ... particularly simple stabilization system used in the...

Warren P. Manger

1966-01-01T23:59:59.000Z

279

Space Weather and Hazards to Application Satellites  

Science Journals Connector (OSTI)

Space weather is defined by the US National Space Weather Program as referring to conditions on the ... health. From the viewpoint of an application satellite, the space environment is a hostile, ... is thus ...

Dr. Michael J. Rycroft

2013-01-01T23:59:59.000Z

280

An Airborne APT Weather Satellite Imaging System  

Science Journals Connector (OSTI)

This paper describes the development of a novel airborne system that receives a real-time imagery broadcast in the Automatic Picture Transmission (APT) format from polar-orbiting weather satellites. The availability of such real-time imagery ...

James E. Jordan; David L. Marcotte; G. W. K. Moore

1998-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Updated Satellite Technique to Forecast Heavy Snow  

Science Journals Connector (OSTI)

Certain satellite interpretation techniques have proven quite useful in the heavy snow forecast process. Those considered best are briefly reviewed, and another technique is introduced. This new technique was found to be most valuable in cyclonic ...

Edward C. Johnston

1995-06-01T23:59:59.000Z

282

ARM - Field Campaign - Summer Single Column Model IOP  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsSummer Single Column Model IOP govCampaignsSummer Single Column Model IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Summer Single Column Model IOP 1997.06.18 - 1997.07.18 Lead Scientist : David Randall Data Availability Actual data files for a number of past SCM IOPs are available from the ARM Archive IOP Server Cloud and Radiation Products Derived from Satellite Data Colorado State's Single Column Modeling Home Page For data sets, see below. Summary During the IOP, 1180 sondes were launched, with 4 missing data due to weather related problems and 24 terminating before 10,000 m (10 km). Description The Summer 1997 SCM IOP was scheduled with the SGP97 Campaign. With additional NASA funding, the IOP was extended so that the total IOP covered

283

Experimental study of linear magnetic dichroism in photoionization satellite transitions of atomic rubidium  

SciTech Connect (OSTI)

Laser orientation in the initial state has been used to study the properties of satellite transitions in inner-shell photoionization of rubidium atoms. The linear magnetic dichroism in the angular distribution (LMDAD) has been utilized to probe the continuum waves of orbital angular momentum conserving monopole, and angular momentum changing conjugate satellites, accompanying the 4p ionization of atomic Rb. We show experimentally that LMDAD of both types of satellite transitions is nonzero and that LMDAD of monopole satellites, measured as a function of photon energy, mimics the LMDAD of direct photoionization, whereas the LMDAD of conjugate transitions deviates drastically from that trend. The results indicate that conjugate transitions cannot be described theoretically without explicit inclusion of electron-electron interaction. The present data can thus be used as a very precise test of current models for photoionization.

Jaenkaelae, K. [Department of Physics, P.O. Box 3000, 90014 University of Oulu, Oulu (Finland); Alagia, M. [CNR-IOM, Laboratorio TASC, IT-34149 Trieste (Italy); Feyer, V.; Richter, R. [Sincrotrone Trieste, Area Science Park, IT-34149 Trieste (Italy); Prince, K. C. [Sincrotrone Trieste, Area Science Park, IT-34149 Trieste (Italy); CNR-IOM, Laboratorio TASC, IT-34149 Trieste (Italy)

2011-11-15T23:59:59.000Z

284

Radiation damage of polyethylene exposed in the stratosphere at an altitude of 40 km  

E-Print Network [OSTI]

Low Density Polyethylene (LDPE) films were exposed at an altitude of 40 km over a 3 day NASA stratospheric balloon mission from Alice Springs, Australia. The radiation damage, oxidation and nitration in the LDPE films exposed in stratosphere were measured using ESR, FTIR and XPS spectroscopy. The results were compared with those from samples stored on the ground and exposed in a laboratory plasma. The types of free radicals, unsaturated hydrocarbon groups, oxygen-containing and nitrogen-containing groups in LDPE film exposed in the stratosphere and at the Earth's surface are different. The radiation damage in films exposed in the stratosphere are observed in the entire film due to the penetration of high energy cosmic rays through their thickness, while the radiation damage in films exposed on the ground is caused by sunlight penetrating into only a thin surface layer. A similarly thin layer of the film is damaged by exposure to plasma due to the low energy of the plasma particles. The intensity of oxidation ...

Kondyurin, Alexey; Bilek, Marcela

2011-01-01T23:59:59.000Z

285

Dynamic characterization of satellite components through non-invasive methods  

SciTech Connect (OSTI)

The rapid deployment of satellites is hindered by the need to flight-qualify their components and the resulting mechanical assembly. Conventional methods for qualification testing of satellite components are costly and time consuming. Furthermore, full-scale vehicles must be subjected to launch loads during testing. The harsh testing environment increases the risk of component damage during qualification. The focus of this research effort was to assess the performance of Structural Health Monitoring (SHM) techniques as replacement for traditional vibration testing. SHM techniques were applied on a small-scale structure representative of a responsive satellite. The test structure consisted of an extruded aluminum space-frame covered with aluminum shear plates, which was assembled using bolted joints. Multiple piezoelectric patches were bonded to the test structure and acted as combined actuators and sensors. Various methods of SHM were explored including impedance-based health monitoring, wave propagation, and conventional frequency response functions. Using these methods in conjunction with finite element modeling, the dynamic properties of the test structure were established and areas of potential damage were identified and localized. The adequacy of the results from each SHM method was validated by comparison to results from conventional vibration testing.

Mullens, Joshua G [Los Alamos National Laboratory; Wiest, Heather K [Los Alamos National Laboratory; Mascarenas, David D [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory

2011-01-24T23:59:59.000Z

286

A New Method for Controlling the Trajectory of Stratospheric Satellite  

Science Journals Connector (OSTI)

A stratospheric satellite flies from east to west around the earth in the stratosphere, and a certain number of stratospheric satellites make up the global stratospheric balloon constellation. This paper presents the stratospheric satellite's trajectory ... Keywords: stratospheric satellite, trajectory control, super-pressure helium balloon, stratosail

Fu Wenxing; Zhu Supeng; Zuo Liankai; Zhu Yanda

2009-11-01T23:59:59.000Z

287

ANALYSIS OF HANDOVER CHARACTERISTICS IN SHADOWED LEO SATELLITE COMMUNICATION NETWORKS  

E-Print Network [OSTI]

In the near future low earth orbit (LEO) satellite communication networks will partially substitute for fixed

Sung, Dan Keun

288

THE EXTREME SMALL SCALES: DO SATELLITE GALAXIES TRACE DARK MATTER?  

SciTech Connect (OSTI)

We investigate the radial distribution of galaxies within their host dark matter halos as measured in the Sloan Digital Sky Survey by modeling their small-scale clustering. Specifically, we model the Jiang et al. measurements of the galaxy two-point correlation function down to very small projected separations (10 h{sup -1} kpc {<=} r {<=} 400 h{sup -1} kpc), in a wide range of luminosity threshold samples (absolute r-band magnitudes of -18 up to -23). We use a halo occupation distribution framework with free parameters that specify both the number and spatial distribution of galaxies within their host dark matter halos. We assume one galaxy resides in the halo center and additional galaxies are considered satellites that follow a radial density profile similar to the dark matter Navarro-Frenk-White (NFW) profile, except that the concentration and inner slope are allowed to vary. We find that in low luminosity samples (M{sub r} < -19.5 and lower), satellite galaxies have radial profiles that are consistent with NFW. M{sub r} < -20 and brighter satellite galaxies have radial profiles with significantly steeper inner slopes than NFW (we find inner logarithmic slopes ranging from -1.6 to -2.1, as opposed to -1 for NFW). We define a useful metric of concentration, M{sub 1/10}, which is the fraction of satellite galaxies (or mass) that are enclosed within one-tenth of the virial radius of a halo. We find that M{sub 1/10} for low-luminosity satellite galaxies agrees with NFW, whereas for luminous galaxies it is 2.5-4 times higher, demonstrating that these galaxies are substantially more centrally concentrated within their dark matter halos than the dark matter itself. Our results therefore suggest that the processes that govern the spatial distribution of galaxies, once they have merged into larger halos, must be luminosity dependent, such that luminous galaxies become poor tracers of the underlying dark matter.

Watson, Douglas F.; Berlind, Andreas A.; McBride, Cameron K. [Department of Physics and Astronomy, Vanderbilt University, 1807 Station B, Nashville, TN 37235 (United States); Hogg, David W.; Jiang Tao [Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, NY 10003 (United States)

2012-04-10T23:59:59.000Z

289

Fifteen-year global time series of satellite-derivedfine particulate Boys, B.L.1,*  

E-Print Network [OSTI]

.5 concentration at a resolution of 1° x 1°. The GEOS-Chem chemical transport model (CTM) is used to relate each optical depth (AOD) satellite retrievals, of global chemical transport models (CTMs) and of ground and respiratory morbidity. The WHO air quality guideline (AQG) for PM2.5 of 10 g m-3 is surpassed in most

Martin, Randall

290

NUMERICAL SIMULATIONS OF THE MAGNETIC RAYLEIGH-TAYLOR INSTABILITY IN THE KIPPENHAHN-SCHLUeTER PROMINENCE MODEL. II. RECONNECTION-TRIGGERED DOWNFLOWS  

SciTech Connect (OSTI)

The launch of the Hinode satellite has allowed high-resolution observations of supersonic bright downflows in quiescent prominences, known as prominence knots. We present observations in the Ca II H spectral line using the Solar Optical Telescope on board the Hinode satellite of a descending plasma knot of size {approx}900 km. The knot initially undergoes ballistic motion before undergoing impulsive accelerations at the same time as experiencing increases in intensity. We also present a subset of our three-dimensional magnetohydrodynamic simulations, performed to investigate the nonlinear stability of the Kippenhahn-Shlueter prominence model to the magnetic Rayleigh-Taylor instability in which interchange reconnection occurs. The interchange reconnection in the model breaks the force balance along the field lines which initiates the downflows. The downflows propagate with a downward fluid velocity of {approx}15 km s{sup -1} and a characteristic size of {approx}700 km. We conclude that the observed plasma blob and the simulated downflow are driven by the breaking of the force balance along the magnetic field as a result of a change in magnetic topology caused by reconnection of the magnetic field.

Hillier, Andrew; Isobe, Hiroaki; Shibata, Kazunari [Kwasan and Hida Observatories, Kyoto University, Kyoto (Japan); Berger, Thomas [Lockheed Martin Solar and Astrophysics Laboratory, Palo Alto, CA (United States)

2012-09-10T23:59:59.000Z

291

History of NOAA Satellite Programs--Updated October 2009 Page 1 History of the NOAA Satellite Program  

E-Print Network [OSTI]

climate. The article, History of the NOAA Satellite Program, traces the development of the U.S. weather Service (NWS) forecasts. The NWS is responsible for weather warning services (the geostationary satellites have evolved from weather satellites to environmental satellites. Data is used for applications related

292

History of NOAA Satellite Programs--Updated June 2011 Page 1 History of the NOAA Satellite Program  

E-Print Network [OSTI]

climate. The article, History of the NOAA Satellite Program, traces the development of the U.S. weather is responsible for weather warning services (the geostationary satellites) and their global forecasts (the polar from weather satellites to environmental satellites. Data is used for applications related

293

NOAA Satellite and Information Service The National Environmental Satellite, Data, and Information Service (NESDIS) is dedicated to providing  

E-Print Network [OSTI]

satellites and other sources to promote, protect, and enhance the Nation's economy, security, environmentNOAA Satellite and Information Service Mission The National Environmental Satellite, Data the Nation's operational environmental satellites, · operates the NOAA National Data Centers, · provides data

294

Digital Elevation Model, 0.5-m, Barrow Environmental Observatory, Alaska, 2012  

SciTech Connect (OSTI)

The dataset is a digital elevation model, DEM, of a 2km by 7km region in the vicinity of the Barrow Environmental Observatory near Barrow, Ak.

Gangodagamage, Chandana; Wilson, Cathy; Rowland, Joel

2013-12-08T23:59:59.000Z

295

Chapter 12 - Remote Measurements of Ocean Currents Using Satellite-Borne Altimeters  

Science Journals Connector (OSTI)

Abstract This chapter begins with a discussion of the advantages of seawater motion mapping using satellite altimeters in establishing large as well as comparatively small circulation routes and in detecting and identifying major ocean gyres. This discussion is followed by a brief description of oceanic currents and associated features generated by sea surface slope as well as determination of seawater motion from sea surface slope measurements. Due attention is paid to the technological intricacies in realizing satellite altimetric measurements. These include correction of errors in satellite altimeter data, correction of satellite orbit errors, correction of geoid errors, and null methods for obtaining topographic height variability independent of geoid. Finally, evolution of satellite altimetry is addressed. Some images of the model-simulated mosaic of sea surface undulations arising from the presence of large-scale motions, eddies, and gyres are also given. Satellite altimetric images of the luxuriant sea surface motions such as western boundary currents and gyre systems are also included to kindle readers enthusiasm.

Antony Joseph

2014-01-01T23:59:59.000Z

296

Satellite stories featured in Lab lecture series  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

February » February » Satellite stories featured Satellite stories featured in Lab lecture series Space adventures will be featured in the upcoming Frontiers in Science lecture series "Small Satellites on a Shoestring: The LANL Experience." February 14, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

297

Definition: Stereo Satellite Imagery | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Stereo Satellite Imagery Jump to: navigation, search Dictionary.png Stereo Satellite Imagery Stereo Satellite Imagery is a form of Stereoscopy or 3D imaging. Two pictures are a take of the subject from two slightly different angles to produce the illusion of depth. View on Wikipedia Wikipedia Definition Stereoscopy (also called stereoscopics or 3D imaging) is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision. The word stereoscopy derives from the Greek "στερεός" (stereos), "firm, solid" + "σκοπέω" (skopeō), "to look", "to see". Most stereoscopic methods present two offset images

298

Stereo Satellite Imagery | Open Energy Information  

Open Energy Info (EERE)

Stereo Satellite Imagery Stereo Satellite Imagery Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Stereo Satellite Imagery Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: map structures/faults Hydrological: map surface water features, determine the boundary conditions of hydrothermal circulation Thermal: Cost Information Low-End Estimate (USD): 259.0025,900 centUSD 0.259 kUSD 2.59e-4 MUSD 2.59e-7 TUSD / sq. mile Median Estimate (USD): 282.3128,231 centUSD 0.282 kUSD 2.8231e-4 MUSD 2.8231e-7 TUSD / sq. mile High-End Estimate (USD): 362.6036,260 centUSD

299

BBHRP Assessment Using Ground and Satellite-based High Spectral Resolution  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

BBHRP Assessment Using Ground and Satellite-based High Spectral Resolution BBHRP Assessment Using Ground and Satellite-based High Spectral Resolution Infrared Observations Revercomb, Henry University of Wisconsin-Madison DeSlover, Daniel University of Wisconsin Holz, Robert University of Wisconsin, CIMMS Knuteson, Robert University Of Wisconsin Li, Jun University of Wisconsin-Madison Moy, Leslie University of Wisconsin-Madison Tobin, David University of Wisconsin-Madison Turner, David University of Wisconsin-Madison Category: Radiation The overall objective of this research is to support the ARM BBHRP measurement-model comparison effort that will couple heating rates based on ARM data more directly into SCM and GCM models. We are making use of high spectral resolution infrared satellite, aircraft, and ground based data for

300

Development of prediction models for radioactive caesium distribution within the 80-km radius of the Fukushima Daiichi nuclear power plant  

Science Journals Connector (OSTI)

......rates through vehicle-borne surveys...found that the ecological half-lives...first- and third vehicle-borne surveys. Ecological half-life of...first- and third vehicle-borne surveys...summarises the ecological half-life of......

Sakae Kinase; Tomoyuki Takahashi; Satoshi Sato; Ryuichi Sakamoto; Kimiaki Saito

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Offshore wind resource assessment through satellite images  

E-Print Network [OSTI]

1 Slide no. 4 Offshore wind resource assessment through satellite images Charlotte Bay Hasager images for offshore wind ressource assessment in lieu of in-situ mast observations #12;4 Slide no Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps in the North

302

ATS 351, Spring 2010 Satellite 50 points  

E-Print Network [OSTI]

sensor is a radar. Passive sensors do not emit any radiation, and only detect naturally occurring their own radiation, and measure the return signal that is sent back to them. A good example of an active radiation that is emitted. Most satellites are passive sensors. 3. (5 points). Label each of the following

Rutledge, Steven

303

Total Solar Irradiance Satellite Composites and their  

E-Print Network [OSTI]

Chapter 12 Total Solar Irradiance Satellite Composites and their Phenomenological Effect on Climate. Phenomenological solar signature on climate 310 9. Conclusion 312 1. INTRODUCTION A contiguoustotal solar from each other, in particular about whether the TSI minimum during solar Cycles 22e23 (1995

Scafetta, Nicola

304

Parallel fault strands at 9-km depth resolved on the Imperial Fault, Southern California  

E-Print Network [OSTI]

--crust and lithosphere 1. Introduction [2] The Imperial Valley is one of the most seismically active parts of California is consistent with high heat flow observations for the Imperial Valley [Doser and Kanamori, 1986]. [3] Standard. For an appropriate velocity model for the deep sedimentary basin of the Imperial Valley, I exam- ined velocity

Shearer, Peter

305

Net Carbon Flux from US Croplands at 1km2 Resolution.  

E-Print Network [OSTI]

a network of several models and extensive data sets. Field research funded by DOE and the State of Tennessee at the national scale and with highly detailed resolution. Core capabilities are listed below. Established under DOE Office of Science and NASA. · All energy and greenhouse gas emissions associated

306

Satellite orbit and attitude estimation using three-axis magnetometer  

Science Journals Connector (OSTI)

The determination of satellite orbital and attitude position and velocity from measurement of a single earth magnetic field (emf) vector without additional measurements, but using a state estimator, is a challenging problem. It is not obvious from first glance whether a solution exists at all - whether the problem is observable with the measurement of only a single emf vector, and an analysis is necessary. This paper performs this analysis for a simple linear system model. Almost circular low earth nearly polar orbits and a dipole emf model are considered. Although these are rather restrictive assumptions they nevertheless provide considerable insight. Both a purely algebraic situation as well as dynamic estimation are studied. It is shown that if the emf induction vector magnitude is used to estimate satellite orbit (position and velocity) and its three projections are used to estimate the attitude, that the situation is sufficiently observable for orbit and attitude determination using just magnetometer measurements. However, for nearly polar orbits, longitude and east velocity are difficult to estimate due to weak observability, and estimation convergence time can be lengthy with poor accuracy.

Y. Kim; G. Vukovich

2014-01-01T23:59:59.000Z

307

Real-Time Gridless 800G Super-channel Transport Field Trial over 410km Using Coherent DP-16 QAM  

Science Journals Connector (OSTI)

We report the first successful trial of real-time gridless 800G super-channel over a 410km DCM-less, EDFA-only fibre link using production grade DP - 16QAM, demonstrating 4.76b/s/Hz...

Zhou, Yu Rong; Smith, Kevin; Payne, Roger; Lord, Andrew; Whalley, Glenn; Bennett, Tex; Maniloff, Eric; Alexander, Savchenko; Boymel, David

308

Anti-satellite weapons : threats, laws and the uncertain future of space.  

E-Print Network [OSTI]

??Satellite capabilities greatly enhance both the military and civilian sectors of society. Anti-satellite (ASAT) weapons pose a serious risk to all satellites. Chapter One of (more)

Hart, Brandon L.

2007-01-01T23:59:59.000Z

309

THE SPLASH SURVEY: SPECTROSCOPY OF 15 M31 DWARF SPHEROIDAL SATELLITE GALAXIES  

SciTech Connect (OSTI)

We present a resolved star spectroscopic survey of 15 dwarf spheroidal (dSph) satellites of the Andromeda galaxy (M31). We filter foreground contamination from Milky Way (MW) stars, noting that MW substructure is evident in this contaminant sample. We also filter M31 halo field giant stars and identify the remainder as probable dSph members. We then use these members to determine the kinematical properties of the dSphs. For the first time, we confirm that And XVIII, XXI, and XXII show kinematics consistent with bound, dark-matter-dominated galaxies. From the velocity dispersions for the full sample of dSphs we determine masses, which we combine with the size and luminosity of the galaxies to produce mass-size-luminosity scaling relations. With these scalings we determine that the M31 dSphs are fully consistent with the MW dSphs, suggesting that the well-studied MW satellite population provides a fair sample for broader conclusions. We also estimate dark matter halo masses of the satellites and find that there is no sign that the luminosity of these galaxies depends on their dark halo mass, a result consistent with what is seen for MW dwarfs. Two of the M31 dSphs (And XV, XVI) have estimated maximum circular velocities smaller than 12 km s{sup -1} (to 1{sigma}), which likely places them within the lowest-mass dark matter halos known to host stars (along with Booetes I of the MW). Finally, we use the systemic velocities of the M31 satellites to estimate the mass of the M31 halo, obtaining a virial mass consistent with previous results.

Tollerud, Erik J.; Bullock, James S.; Yniguez, Basilio; Cooper, Michael C., E-mail: etolleru@uci.edu, E-mail: bullock@uci.edu, E-mail: byniguez@uci.edu, E-mail: m.cooper@uci.edu [Center for Cosmology, Department of Physics and Astronomy, University of California, Irvine, Irvine, CA, 92697 (United States); and others

2012-06-10T23:59:59.000Z

310

The Use of Satellite Data in Numerical Weather Prediction  

Science Journals Connector (OSTI)

The basic ideas of numerical weather prediction (NWP) are introduced and it ... so called conventional observations with remotely-sensed (satellite based) measurements is demonstrated. The true nature of satellite

A. P. McNally

1994-01-01T23:59:59.000Z

311

Building technological capability within satellite programs in developing countries  

E-Print Network [OSTI]

Global participation in space activity is growing as satellite technology matures and spreads. Countries in Africa, Asia and Latin America are creating or reinvigorating national satellite programs. These countries are ...

Wood, Danielle Renee

2012-01-01T23:59:59.000Z

312

Magnetic bearing development for support of satellite flywheels  

Science Journals Connector (OSTI)

The use of magnetic bearings (MB) for support of space based flywheels can provide significant improvement in efficiency due to reduction in drag torque. A NASA supported program directed through the Texas A&M Center for Space Power has been formed to advance the technology of MBs for satellite flywheel applications. The five areas of the program are: (a) Magnetic Field Simulation (b) MB controller Development (c) Electromechanical Rotordynamics Modeling (d) Testing and (e) Technology Exchange. Planned innovations in these tasks include eddy current drag torque and power loss determination including moving conductor effects digital (DSP) based control for high speed operation MATLAB-based coupled flexible rotor/controller/actuator electromechanical model with fuzzy logic nonlinear control and ultra high speed>100?krpm measurement of drag torque. The paper examines these areas and provides an overview of the project.

Alan Palazzolo; Mu Li; Andrew Kenny; Shuliang Lei; Danny Havelka; Albert Kascak

1998-01-01T23:59:59.000Z

313

Wave-climate assessment by satellite remote sensing  

SciTech Connect (OSTI)

Satellite remote sensing based on radar altimetry and the synthetic aperture radar (SAR) can be used for accurate ocean-wave climatology globally. The altimeter provides significant wave height and wind speed whereas SAR in principle gives the full wave spectrum. Over the next few years, altimeter-derived wave heights will become the basic data sources for open-ocean statistics and SAR, in combination with results from global wave models, will provide the corresponding directional statistics. In addition, SAR may be used for studying wave conditions in near coastal areas. In the Norwegian Sea and elsewhere, real-time SAT and altimeter data are now being used operationally for forecasting and assimilation into numerical wave models.

Barstow, S.; Krogstad, H.E. [SINTEF, Trodheim (Norway)

1995-10-01T23:59:59.000Z

314

OBSERVATIONS OF DARK AND LUMINOUS MATTER: THE RADIAL DISTRIBUTION OF SATELLITE GALAXIES AROUND MASSIVE RED GALAXIES  

SciTech Connect (OSTI)

We study the projected radial distribution of satellite galaxies around more than 28,000 luminous red galaxies (LRGs) at 0.28 < z < 0.40 and trace the gravitational potential of LRG groups in the range 15 < r/kpc < 700. We show that at large radii the satellite number-density profile is well fitted by a projected Navarro-Frenk-White (NFW) profile with r{sub s} {approx} 270 kpc and that at small radii this model underestimates the number of satellite galaxies. Utilizing the previously measured stellar light distribution of LRGs from deep imaging stacks, we demonstrate that this small-scale excess is consistent with a non-negligible baryonic mass contribution to the gravitational potential of massive groups and clusters. The combined NFW+scaled stellar profile provides an excellent fit to the satellite number-density profile all the way from 15 kpc to 700 kpc. Dark matter dominates the total mass profile of LRG halos at r > 25 kpc whereas baryons account for more than 50% of the mass at smaller radii. We calculate the total dark-to-baryonic mass ratio and show that it is consistent with measurements from weak lensing for environments dominated by massive early-type galaxies. Finally, we divide the satellite galaxies in our sample into three luminosity bins and show that the satellite light profiles of all brightness levels are consistent with each other outside of roughly 25 kpc. At smaller radii we find evidence for a mild mass segregation with an increasing fraction of bright satellites close to the central LRG.

Tal, Tomer; Wake, David A.; Van Dokkum, Pieter G., E-mail: tomer.tal@yale.edu [Astronomy Department, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States)

2012-05-20T23:59:59.000Z

315

Submitted for Publication to SOLAR ENERGY PRODUCING SATELLITE-DERIVED IRRADIANCES IN COMPLEX ARID TERRAIN  

E-Print Network [OSTI]

Submitted for Publication to SOLAR ENERGY PRODUCING SATELLITE-DERIVED IRRADIANCES IN COMPLEX ARID spectrum. #12;Submitted for Publication to SOLAR ENERGY In its simplest description the model amounts wavelengths in the visible spectral range (0.55-0.75 µm) corresponding to the peak of the solar radiation

Perez, Richard R.

316

Capacity dimensioning for Air Traffic Management (ATM) services in a GEO satellite system with spot beams  

Science Journals Connector (OSTI)

The Communications Operating Concepts and Requirements (COCR) for Future Radio Systems (FRS) [EUROCONTROL/FAA, Technical report, May 2007] is a document produced jointly by Eurocontrol (the European organization for the safety of air navigation) and ... Keywords: Satellite air traffic management, queuing theory, traffic model

Eriza Hafid Fazli

2008-08-01T23:59:59.000Z

317

Satellite observations of ozone and nitrogen dioxide: from retrievals to emission estimates  

E-Print Network [OSTI]

Summary Satellite observations of ozone and nitrogen dioxide: from retrievals to emission estimates be inferred for important trace gases such as ozone (O3) and nitrogen dioxide (NO2). Chemical transport models.11 to 3.79. Total nitrogen dioxide columns can be retrieved from space in the 405­465 nm window

Haak, Hein

318

Coastal Wind Mapping from Satellite SAR: Possibilities and Limitations Charlotte Bay Hasager and Merete Bruun Christiansen  

E-Print Network [OSTI]

and Merete Bruun Christiansen Risø National Laboratory, Wind Energy Department, Meteorology Program, VEA-118 Centre in Norway (Furevik & Espedal 2002). The CMOD4 model is only able to solve for wind speed under- 21 - Coastal Wind Mapping from Satellite SAR: Possibilities and Limitations Charlotte Bay Hasager

319

Heuristics for Robust Resource Allocation of Satellite Weather Data Processing  

E-Print Network [OSTI]

Heuristics for Robust Resource Allocation of Satellite Weather Data Processing on a Heterogeneous--This work considers the satellite data processing portion of a space-based weather monitoring system, and is trans- mitted back to the data processing system. The weather imaging data sent down by the satellite

Maciejewski, Anthony A.

320

Responsive Systems Comparison Method: Dynamic Insights into Designing a Satellite  

E-Print Network [OSTI]

satellite radar system architectures for providing the United States Military a global, all-weather, onResponsive Systems Comparison Method: Dynamic Insights into Designing a Satellite Radar System Adam of talk #12;seari.mit.edu � 2009 Massachusetts Institute of Technology 5 Case Application: Satellite Radar

de Weck, Olivier L.

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

The Geostationary Operational Environment Satellite R-Series Program  

E-Print Network [OSTI]

: GOES-R is a satellite series carrying six instruments designed to enhance weather forecasting, severeGOES-R The Geostationary Operational Environment Satellite R-Series Program Frequently Asked. The GOES-R series of satellites will fly improved spacecraft and instrument technologies, for more timely

Mojzsis, Stephen J.

322

CIRES/NGDC Research Associate Satellite Sensor Systems Engineer  

E-Print Network [OSTI]

(ADT) supporting the space weather sensors on the next-generation GOES-R satellites. Planning), controlling the acquisition, processing, distribution and archive of NOAA space weather satellite dataCIRES/NGDC Research Associate Satellite Sensor Systems Engineer The Cooperative Institute

Colorado at Boulder, University of

323

Effects of Rain Attenuation on Satellite Video Transmission  

E-Print Network [OSTI]

. The effectiveness of site diversity as a mitigation technique is also studied. II. WEATHER EFFECTS Satellite path is the major weather effect of concern for satellite communications operating at frequencies aboveEffects of Rain Attenuation on Satellite Video Transmission Yee Hui Lee and Stefan Winkler Nanyang

Winkler, Stefan

324

Joint Polar Satellite System Science Seminar Annual Digest  

E-Print Network [OSTI]

iii Joint Polar Satellite System Science Seminar Annual Digest 2013 #12;#12;Joint Polar Satellite Polar Satellite System (JPSS) Program Science, it is my pleasure to present this digest, which services, such as forecasting of severe weather events and environmental monitoring of land, ocean

325

Methods for verifying satellite precipitation estimates Elizabeth E. Ebert  

E-Print Network [OSTI]

1 Methods for verifying satellite precipitation estimates Elizabeth E. Ebert Bureau of Meteorology, Melbourne, Australia Introduction Satellite precipitation estimates are widely used to measure global rainfall on monthly timescales for climate studies (e.g., Huffman et al., 1997). Near real time satellite

Ebert, Beth

326

Observing ocean heat content using satellite gravity and altimetry  

E-Print Network [OSTI]

: ocean heat content, altimetry, satellite gravity, steric height, remote sensing Citation: Jayne, S. RObserving ocean heat content using satellite gravity and altimetry Steven R. Jayne1,2 and John M with satellite measurements of the Earth's time-varying gravity to give improved estimates of the ocean's heat

Jayne, Steven

327

Ris-R-1479(EN) Satellite information for wind energy  

E-Print Network [OSTI]

Risø-R-1479(EN) Satellite information for wind energy applications Morten Nielsen, Poul Astrup Title: Satellite information for wind energy applications Department: Wind Energy Department Risø-R-1479.): An introduction to satellite information relevant for wind energy applications is given. It includes digital

328

Satellites and Education: A Case Study on Nilesat in Egypt  

Science Journals Connector (OSTI)

In this paper, we propose some possible satellite uses in education with special emphasis on interactive data services such as Digital Data Broadcast and Turbo Internet. The case of Nilesat satellite in Egypt is considered. A contribution to the identification ... Keywords: education, satellite, distance education, open university, Nilesat, broadcast, Turbo Internet, TV

1999-07-01T23:59:59.000Z

329

Wind: wind power density GIS data at 50m above ground and 1km resolution  

Open Energy Info (EERE)

China from NREL China from NREL Dataset Summary Description (Abstract): Raster GIS data, exported as BIL file, 50 m wind power density for eastern China. (Purpose): To provide information on the wind resource potential in eastern China. Values range from 0 to 3079 W/m2. (Supplemental Information): The modeling regions do not completely cover eastern China. Projection Parameters Projection LAMBERT_AZIMUTHAL Datum WGS84 Zunits METERS Units METERS Spheroid DEFINED Major Axis 6370997.00000 Minor Axis 0.00000 Parameters: radius of the sphere of reference 6370997.00000 Continue? longitude of center of projection 119 0 0.00 latitude of center of projection 33 30 0.000 false easting (meters) 0.00000 false northing (meters) 0.00000 Spatial Information Raster: Number of Columns: 2658 Number of Rows: 3926 Pixel

330

Wind: wind power density maps at 50 m above ground and 1km resolution for  

Open Energy Info (EERE)

eastern China from NREL eastern China from NREL Dataset Summary Description (Abstract): PDF maps of Eastern China wind mapping. (Purpose): To provide information on the wind resource potential in eastern China. Includes maps of full mapping region, and 15 sub-regions. (Supplemental Information): The modeling regions do not completely cover eastern China. Projection Parameters Projection LAMBERT_AZIMUTHAL Datum WGS84 Z-units METERS Units METERS Spheroid DEFINED Major Axis 6370997.00000 Minor Axis 0.00000 Parameters: radius of the sphere of reference 6370997.00000 Continue? longitude of center of projection 119 0 0.00 latitude of center of projection 33 30 0.000 false easting (meters) 0.00000 false northing (meters) 0.00000 Spatial Information Raster: Number of Columns: 2658 Number of Rows: 3926

331

WIPP Satellite Tracking System Relocates to Carlsbad  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

For Immediate Release WIPP Satellite Tracking System Relocates to Carlsbad Carlsbad, N.M., December 7, 2005 - The U.S. Department of Energy's (DOE) Carlsbad Field Office has announced that effective December 2, the DOE Transportation Tracking and Communication System (TRANSCOM) is fully staffed and operational in Carlsbad, N.M. The TRANSCOM system, previously based in Albuquerque, N.M, is used to track transuranic waste shipments to the Waste Isolation Plant (WIPP) near Carlsbad and other DOE nuclear waste shipments nationwide. Security Consultant Group (SCG), operator of the TRANSCOM satellite system, maintains a staff of seven operators in Carlsbad. The new TRANSCOM Communications Center is located at the Skeen-Whitlock Building, where DOE

332

Constraints on the dark matter particle mass from the number of Milky Way satellites  

SciTech Connect (OSTI)

We have conducted N-body simulations of the growth of Milky Way-sized halos in cold and warm dark matter cosmologies. The number of dark matter satellites in our simulated Milky Ways decreases with decreasing mass of the dark matter particle. Assuming that the number of dark matter satellites exceeds or equals the number of observed satellites of the Milky Way, we derive lower limits on the dark matter particle mass. We find with 95% confidence m{sub s}>13.3 keV for a sterile neutrino produced by the Dodelson and Widrow mechanism, m{sub s}>8.9 keV for the Shi and Fuller mechanism, m{sub s}>3.0 keV for the Higgs decay mechanism, and m{sub WDM}>2.3 keV for a thermal dark matter particle. The recent discovery of many new dark matter dominated satellites of the Milky Way in the Sloan Digital Sky Survey allows us to set lower limits comparable to constraints from the complementary methods of Lyman-{alpha} forest modeling and x-ray observations of the unresolved cosmic x-ray background and of dark matter halos from dwarf galaxy to cluster scales. Future surveys like LSST, DES, PanSTARRS, and SkyMapper have the potential to discover many more satellites and further improve constraints on the dark matter particle mass.

Polisensky, Emil [Naval Research Laboratory, Washington, D.C. 20375 (United States); Department of Astronomy, University of Maryland, College Park, Maryland 20745 (United States); Ricotti, Massimo [Department of Astronomy, University of Maryland, College Park, Maryland 20745 (United States)

2011-02-15T23:59:59.000Z

333

The Invisibles: A Detection Algorithm to Trace the Faintest Milky Way Satellites  

E-Print Network [OSTI]

[Abridged] A specialized data mining algorithm has been developed using wide-field photometry catalogues, enabling systematic and efficient searches for resolved, extremely low surface brightness satellite galaxies in the halo of the Milky Way (MW). Tested and calibrated with the Sloan Digital Sky Survey Data Release 6 (SDSS-DR6) we recover all fifteen MW satellites recently detected in SDSS, six known MW/Local Group dSphs in the SDSS footprint, and 19 previously known globular and open clusters. In addition, 30 point source overdensities have been found that correspond to no cataloged objects. The detection efficiencies of the algorithm have been carefully quantified by simulating more than three million model satellites embedded in star fields typical of those observed in SDSS, covering a wide range of parameters including galaxy distance, scale-length, luminosity, and Galactic latitude.

Shane Walsh; Beth Willman; Helmut Jerjen

2008-07-21T23:59:59.000Z

334

A Pair of Bootes: A New Milky Way Satellite  

E-Print Network [OSTI]

As part of preparations for a southern sky search for faint Milky Way dwarf galaxy satellites, we report the discovery of a stellar overdensity in the Sloan Digital Sky Survey Data Release 5, lying at an angular distance of only 1.5 degrees from the recently discovered Bo{\\"o}tes dwarf. The overdensity was detected well above statistical noise by employing a sophisticated data mining algorithm and does not correspond to any catalogued object. Overlaid isochrones using stellar population synthesis models show that the color-magnitude diagram of that region has the signature of an old (12 Gyr), metal-poor (${\\rm Fe/H}\\approx-2.0$) stellar population at a tentative distance of 60 kpc, evidently the same heliocentric distance as the Bo\\"otes dwarf. We estimate the new object to have a total magnitude of $M_{V}\\sim-3.1\\pm1.1$ mag and a half-light radius of $r_{h}=4'.1\\pm1'.6$ ($72\\pm28$ pc) placing it in an apparent $40Satellite, Coma Berenices.

S. M. Walsh; H. Jerjen; B. Willman

2007-05-10T23:59:59.000Z

335

Equal distribution of satellite constellations on circular target orbits  

Science Journals Connector (OSTI)

Abstract This paper addresses the problem of equal distribution of satellite constellations on circular target orbits. The control goal is to make the constellation converge to a circular target orbit, while spatially distributing the satellites at equal inter-satellite distances. The solution is defined in the port-Hamiltonian framework, which gives a clear physical interpretation of the obtained control laws, insight into the energy consumption and complete stability proofs. The controller consists of two parts: the internal control system steers each individual satellite to the target orbit, the external control system equally distributes the satellite constellation. Numerical simulation results are given to illustrate the effectiveness of the approach.

Ewoud Vos; Jacquelien M.A. Scherpen; Arjan J. van der Schaft

2014-01-01T23:59:59.000Z

336

Neutrinos in IceCube/KM3NeT as probes of dark matter substructures in galaxy clusters  

Science Journals Connector (OSTI)

Galaxy clusters are one of the most promising candidate sites for dark matter (DM) annihilation. We focus on DM (?) with mass in the range of 10GeV100TeV, annihilating through the channels ????+?-, ?????, ???tt, or ???????, and forecast the expected sensitivity to the annihilation cross section into these channels by observing galaxy clusters at IceCube/KM3NeT. Optimistically, the presence of DM substructures in galaxy clusters is predicted to enhance the signal by 23 orders of magnitude over the contribution from the smooth component of the DM distribution. Optimizing for the angular size of the region of interest for galaxy clusters, the sensitivity to the annihilation cross section, ??v?, of heavy DM with mass in the range of 300GeV100TeV will be O(10-24??cm3?s-1) for full IceCube/KM3NeT live time of 10years, which is about one order of magnitude better than the best limit that can be obtained by observing the MilkyWay halo. We find that neutrinos from cosmic ray interactions in the galaxy cluster, in addition to the atmospheric neutrinos, are a source of background. We show that significant improvement in the experimental sensitivity can be achieved for lower DM masses in the range of 10300GeV if neutrino-induced cascades can be reconstructed to ?5 accuracy, as may be possible in KM3NeT. We, therefore, propose that a low-energy extension KM3NeT-Core, similar to DeepCore in IceCube, be considered for an extended reach at low DM masses.

Basudeb Dasgupta and Ranjan Laha

2012-11-01T23:59:59.000Z

337

Learning Scene Categories from High Resolution Satellite Image for Aerial Video Analysis  

SciTech Connect (OSTI)

Automatic scene categorization can benefit various aerial video processing applications. This paper addresses the problem of predicting the scene category from aerial video frames using a prior model learned from satellite imagery. We show that local and global features in the form of line statistics and 2-D power spectrum parameters respectively can characterize the aerial scene well. The line feature statistics and spatial frequency parameters are useful cues to distinguish between different urban scene categories. We learn the scene prediction model from highresolution satellite imagery to test the model on the Columbus Surrogate Unmanned Aerial Vehicle (CSUAV) dataset ollected by high-altitude wide area UAV sensor platform. e compare the proposed features with the popular Scale nvariant Feature Transform (SIFT) features. Our experimental results show that proposed approach outperforms te SIFT model when the training and testing are conducted n disparate data sources.

Cheriyadat, Anil M [ORNL] [ORNL

2011-01-01T23:59:59.000Z

338

Short-range precipitation forecasts using assimilation of simulated satellite water vapor profiles and column cloud liquid water amounts  

SciTech Connect (OSTI)

These observing system simulation experiments investigate the assimilation of satellite-observed water vapor and cloud liquid water data in the initialization of a limited-area primitive equations model with the goal of improving short-range precipitation forecasts. The assimilation procedure presented includes two aspects: specification of an initial cloud liquid water vertical distribution and diabatic initialization. The satellite data is simulated for the next generation of polar-orbiting satellite instruments, the Advanced Microwave Sounding Unit (AMSU) and the High-Resolution Infrared Sounder (HIRS), which are scheduled to be launched on the NOAA-K satellite in the mid-1990s. Based on cloud-top height and total column cloud liquid water amounts simulated for satellite data a diagnostic method is used to specify an initial cloud water vertical distribution and to modify the initial moisture distribution in cloudy areas. Using a diabatic initialization procedure, the associated latent heating profiles are directly assimilated into the numerical model. The initial heating is estimated by time averaging the latent heat release from convective and large-scale condensation during the early forecast stage after insertion of satellite-observed temperature, water vapor, and cloud water formation.

Wu, X.; Diak, G.R.; Hayden, C.M.; Young, J.A. [Univ. of Wisconsin, Madison, WI (United States)] [Univ. of Wisconsin, Madison, WI (United States)

1995-02-01T23:59:59.000Z

339

Modeling of current characteristics of segmented Langmuir probe on DEMETER  

SciTech Connect (OSTI)

We model the current characteristics of the DEMETER Segmented Langmuir probe (SLP). The probe is used to measure electron density and temperature in the ionosphere at an altitude of approximately 700 km. It is also used to measure the plasma flow velocity in the satellite frame of reference. The probe is partitioned into seven collectors: six electrically insulated spherical segments and a guard electrode (the rest of the sphere and the small post). Comparisons are made between the predictions of the model and DEMETER measurements for actual ionospheric plasma conditions encountered along the satellite orbit. Segment characteristics are computed numerically with PTetra, a three-dimensional particle in cell simulation code. In PTetra, space is discretized with an unstructured tetrahedral mesh, thus, enabling a good representation of the probe geometry. The model also accounts for several physical effects of importance in the interaction of spacecraft with the space environment. These include satellite charging, photoelectron, and secondary electron emissions. The model is electrostatic, but it accounts for the presence of a uniform background magnetic field. PTetra simulation results show different characteristics for the different probe segments. The current collected by each segment depends on its orientation with respect to the ram direction, the plasma composition, the magnitude, and the orientation of the magnetic field. It is observed that the presence of light H{sup +} ions leads to a significant increase in the ion current branch of the I-V curves of the negatively polarized SLP. The effect of the magnetic field is demonstrated by varying its magnitude and direction with respect to the reference magnetic field. It is found that the magnetic field appreciably affects the electron current branch of the I-V curves of certain segments on the SLP, whereas the ion current branch remains almost unaffected. PTetra simulations are validated by comparing the computed characteristics and their angular anisotropy with the DEMETER measurements, as simulation results are found to be in good agreement with the measurements.

Imtiaz, Nadia; Marchand, Richard [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada)] [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada); Lebreton, Jean-Pierre [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Universit d'Orlans, Orlans Cedex (France)] [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Universit d'Orlans, Orlans Cedex (France)

2013-05-15T23:59:59.000Z

340

The Galaxy Cross-Correlation Function as a Probe of the Spatial Distribution of Galactic Satellites  

E-Print Network [OSTI]

The spatial distribution of satellite galaxies around host galaxies can illuminate the relationship between satellites and dark matter subhalos and aid in developing and testing galaxy formation models. Previous efforts to constrain the distribution attempted to eliminate interlopers from the measured projected number density of satellites and found that the distribution is generally consistent with the expected dark matter halo profile of the parent hosts, with a best-fit power-law slope of ~ -1.7 between projected separations of ~30 kpc/h and 0.5 Mpc/h. Here, I use the projected cross-correlation of bright and faint galaxies to analyze contributions from satellites and interlopers together, using a halo occupation distribution (HOD) analytic model for galaxy clustering. This approach is tested on mock catalogs constructed from simulations. I find that analysis of Sloan Digital Sky Survey (SDSS) data gives results generally consistent with interloper subtraction methods between the projected separations of 10 kpc/h and 6.3 Mpc/h, although the errors on the parameters that constrain the radial profile are large, and larger samples of data are required.

Jacqueline Chen

2007-12-03T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Satellite streamfunction analysis for the California current  

E-Print Network [OSTI]

the dasses he taught. My most sincere thanks go to Dr. Robert E. Whitaker for his assistance in the numerous computer programs and contouring routines. Finally, to my mother, Miriam Ayala, for her unlimited support and encour- agement. TABLE OF CONTENTS... 18. 19. 20. 22. 23. 24. 25. 26. Sea surface topography contours (kl, +3, +6, k9, ~ ~ cm) and satellite-derived surface flow vectors (cm s s) for the rotated Cartesian case. Sea surface topography contours (kl, k3, k6, k9, . cm...

Arango, Hernan Guillermo

2012-06-07T23:59:59.000Z

342

Indirect Dark Matter Detection Limits from the Ultra-Faint Milky Way Satellite Segue 1  

SciTech Connect (OSTI)

We use new kinematic data from the ultra-faint Milky Way satellite Segue 1 to model its dark matter distribution and derive upper limits on the dark matter annihilation cross-section. Using gamma-ray ux upper limits from the Fermi satellite and MAGIC, we determine cross-section exclusion regions for dark matter annihilation into a variety of different particles including charged leptons. We show that these exclusion regions are beginning to probe the regions of interest for a dark matter interpretation of the electron and positron uxes from PAMELA, Fermi, and HESS, and that future observations of Segue 1 have strong prospects for testing such an interpretation. We additionally discuss prospects for detecting annihilation with neutrinos using the IceCube detector, finding that in an optimistic scenario a few neutrino events may be detected. Finally we use the kinematic data to model the Segue 1 dark matter velocity dispersion and constrain Sommerfeld enhanced models.

Essig, Rouven; /SLAC; Sehgal, Neelima; Strigari, Louis E.; /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Geha, Marla; /Yale U.; Simon, Joshua D.; /Carnegie Inst. Observ.

2011-08-11T23:59:59.000Z

343

Climate analysis with satellite versus weather station data  

Science Journals Connector (OSTI)

This paper compares how well satellite versus weather station measurements of climate predict agricultural performance ... , India, and the United States. Although weather stations give accurate measures of groun...

Robert Mendelsohn; Pradeep Kurukulasuriya; Alan Basist; Felix Kogan

2007-03-01T23:59:59.000Z

344

Top Ten Things to Know About Meteorological Satellites  

Science Journals Connector (OSTI)

Weather forecasting today still takes the same approach of gathering weather observations (by satellites, ground measurements, and weather balloon soundings) to forecast weather at a particular location, nowadays...

Su-Yin Tan

2014-01-01T23:59:59.000Z

345

The system architecting process for a solar power satellite concept.  

E-Print Network [OSTI]

??This thesis discusses the system architecting process for a Solar Power Satellite (SPS) concept.The heuristic approach allows a spectrum of concepts to be narrowed to (more)

Bidwell, Joseph Grady

2006-01-01T23:59:59.000Z

346

Orbits design for Leo space based solar power satellite system.  

E-Print Network [OSTI]

?? Space Based Solar Power satellites use solar arrays to generate clean, green, and renewable electricity in space and transmit it to earth via microwave, (more)

Addanki, Neelima Krishna Murthy

2011-01-01T23:59:59.000Z

347

A versatile system for processing geostationary satellite data with run-time visualization capability  

SciTech Connect (OSTI)

To better predict global climate change, scientists are developing climate models that require interdisciplinary and collaborative efforts in their building. The authors are currently involved in several such projects but will briefly discuss activities in support of two such complementary projects: the Atmospheric Radiation Measurement (ARM) program of the Department of Energy and Sequoia 2000, a joint venture of the University of California, the private sector, and government. The author`s contribution to the ARM program is to investigate the role of clouds on the top of the atmosphere and on surface radiance fields through the data analysis of surface and satellite observations and complex modeling of the interaction of radiation with clouds. One of the first ARM research activities involves the computation of the broadband shortwave surface irradiance from satellite observations. Geostationary satellite images centered over the first ARM observation site are received hourly over the Internet network and processed in real time to compute hourly and daily composite shortwave irradiance fields. The images and the results are transferred via a high-speed network to the Sequoia 2000 storage facility in Berkeley, where they are archived. These satellite-derived results are compared with the surface observations to evaluate the accuracy of the satellite estimate and the spatial representation of the surface observations. In developing the software involved in calculating the surface shortwave irradiance, the authors have produced an environment whereby they can easily modify and monitor the data processing as required. Through the principles of modular programming, they have developed software that is easily modified as new algorithms for computation are developed or input data availability changes. In addition, the software was designed so that it could be run from an interactive, icon-driven, graphical interface, TCL-TK, developed by Sequoia 2000 participants.

Landsfeld, M.; Gautier, C.; Figel, T.

1995-01-01T23:59:59.000Z

348

Adaptive thermal modeling architecture for small satellite applications  

E-Print Network [OSTI]

The United States Air Force and commercial aerospace industry recognize the importance of moving towards smaller, better, and cheaper spacecraft to support the nation's increasing dependence on space-based technologies. ...

Richmond, John Anger

2010-01-01T23:59:59.000Z

349

Operation and maintenance of Fermilab`s satellite refrigerator expansion engines  

SciTech Connect (OSTI)

Fermilab`s superconducting Tevatron accelerator is cooled to liquid helium temperatures by 24 satellite refrigerators, each of which uses for normal operations a reciprocating `wet` expansion engine. These expanders are basically Process System (formerly Koch) Model 1400 expanders installed in standalone cryostats designed by Fermilab. This paper will summarize recent experience with operations and maintenance of these expansion engines. Some of the statistics presented will include total engine hours, mean time between major and minor maintenance, and frequent causes of major maintenance.

Soyars, W.M.

1996-09-01T23:59:59.000Z

350

Micro-Navigation Satellite Network Design and Analysis  

E-Print Network [OSTI]

Micro-Navigation Satellite Network Design and Analysis Bei Kang, Electrical and Computer for successful navigation. In this paper, we design and analyze the micro-navigation satellite network that share was a system engineer at JT Inc., Incheon, from 2000 to 2003. His research interests include sensor networks

Won, Chang-Hee

351

Analytical solution of a satellite orbit disturbed by atmospheric drag  

Science Journals Connector (OSTI)

......EXPANSIONS OF ATMOSPHERIC DRAG FORCE For convenience, the...equation (10) allows the force vector to be represented...satellite and finally will force the satellite down to...Valladoc D. A. , 2007, Fundamentals of Astrodynamics and...1979, Mathematic Handbook. Educational Press......

Guochang Xu; Xu Tianhe; Wu Chen; Ta-Kang Yeh

2011-01-01T23:59:59.000Z

352

Ris National Laboratory Satellite SAR applied in offshore wind  

E-Print Network [OSTI]

Risø National Laboratory Satellite SAR applied in offshore wind ressource mapping: possibilities is to quantify the regional offshore wind climate for wind energy application based on satellite SAR ·Study of 85SAR(m/s) Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps

353

ON THINNING METHODS FOR DATA ASSIMILATION OF SATELLITE OBSERVATIONS  

E-Print Network [OSTI]

2B.3 ON THINNING METHODS FOR DATA ASSIMILATION OF SATELLITE OBSERVATIONS T. Ochotta1 C. Gebhardt2 V ABSTRACT Thinning of observational data sets is an essen- tial task in assimilation of satellite data for numer- ical weather forecast. In this work we modify and improve the scheme of so-called estimation

Reiterer, Harald

354

Use of Visible Geostationary Operational Meteorological Satellite Imagery in  

E-Print Network [OSTI]

10 Use of Visible Geostationary Operational Meteorological Satellite Imagery in Mapping Reference is typically computed at specific locations based on weather station data. Estimates of incoming solar radiation (insolation, or Rs) have been made from geostationary satellite data over a 14-year period (1 June

355

Surface Deformation from Satellite Data and Geothermal Assessment,  

Open Energy Info (EERE)

Surface Deformation from Satellite Data and Geothermal Assessment, Surface Deformation from Satellite Data and Geothermal Assessment, Exploration and Mitigation in Imperial Valley Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Surface Deformation from Satellite Data and Geothermal Assessment, Exploration and Mitigation in Imperial Valley Author Mariana Eneva Published N/A, 2012 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Surface Deformation from Satellite Data and Geothermal Assessment, Exploration and Mitigation in Imperial Valley Citation Mariana Eneva. Surface Deformation from Satellite Data and Geothermal Assessment, Exploration and Mitigation in Imperial Valley [Internet]. 2012. N/A. N/A. [cited 2013/09/17]. Available from: http://www.energy.ca.gov/research/notices/2012-02-29_workshop/presentations/Geothermal/Eneva-Imageair_Inc_Presentation.pdf

356

Asymptotic behavior of an elastic satellite with internal friction  

E-Print Network [OSTI]

We study the dynamics of an elastic body whose shape and position evolve due to the gravitational forces exerted by a pointlike planet. The main result is that, if all the deformations of the satellite dissipate some energy, then under a suitable nondegeneracy condition there are only three possible outcomes for the dynamics: (i) the orbit of the satellite is unbounded, (ii) the satellite falls on the planet, (iii) the satellite is captured in synchronous resonance i.e. its orbit is asymptotic to a motion in which the barycenter moves on a circular orbit, and the satellite moves rigidly, always showing the same face to the planet. The result is obtained by making use of LaSalle's invariance principle and by a careful kinematic analysis showing that energy stops dissipating only on synchronous orbits. We also use in quite an extensive way the fact that conservative elastodynamics is a Hamiltonian system invariant under the action of the rotation group.

Emanuele Haus; Dario Bambusi

2012-12-04T23:59:59.000Z

357

Constraining cloud lifetime effects of aerosols using A-Train satellite observations  

SciTech Connect (OSTI)

Aerosol indirect effects have remained the largest uncertainty in estimates of the radiative forcing of past and future climate change. Observational constraints on cloud lifetime effects are particularly challenging since it is difficult to separate aerosol effects from meteorological influences. Here we use three global climate models, including a multi-scale aerosol-climate model PNNL-MMF, to show that the dependence of the probability of precipitation on aerosol loading, termed the precipitation frequency susceptibility (S{sub pop}), is a good measure of the liquid water path response to aerosol perturbation ({lambda}), as both Spop and {lambda} strongly depend on the magnitude of autoconversion, a model representation of precipitation formation via collisions among cloud droplets. This provides a method to use satellite observations to constrain cloud lifetime effects in global climate models. S{sub pop} in marine clouds estimated from CloudSat, MODIS and AMSR-E observations is substantially lower than that from global climate models and suggests a liquid water path increase of less than 5% from doubled cloud condensation nuclei concentrations. This implies a substantially smaller impact on shortwave cloud radiative forcing (SWCF) over ocean due to aerosol indirect effects than simulated by current global climate models (a reduction by one-third for one of the conventional aerosol-climate models). Further work is needed to quantify the uncertainties in satellite-derived estimates of S{sub pop} and to examine S{sub pop} in high-resolution models.

Wang, Minghuai; Ghan, Steven J.; Liu, Xiaohong; Ecuyer, Tristan L.; Zhang, Kai; Morrison, H.; Ovchinnikov, Mikhail; Easter, Richard C.; Marchand, Roger; Chand, Duli; Qian, Yun; Penner, Joyce E.

2012-08-15T23:59:59.000Z

358

Heat Transfer -1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with  

E-Print Network [OSTI]

Heat Transfer - 1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with dimensions and properties given below. (a) Calculate the solar heat flux (W/m2 is at a distance where the solar heat flux (as defined above) is 500 W/m2 , and the flat plate is oriented

Virginia Tech

359

The use of infrared satellite cloud imagery data as proxy data for moisture and diabatic heating in data assimilation  

SciTech Connect (OSTI)

Polar-orbiting and geostationary satellites can provide useful proxy sources of moisture data and diabatic heating. It is shown that the utilization of this information during data assimilation leads to enhanced precipitation in the tropics and has the potential to minimize spinup in the model. Additionally, the utilization of moisture initialization leads to improved agreement between the model and observed precipitation during the early stages of model integration. 22 refs.

Puri, K.; Davidson, N.E. (Bureau of Meteorology, Research Centre, Melbourne (Australia))

1992-10-01T23:59:59.000Z

360

2nd Workshop on Satellites for Solar Energy Assessments  

SciTech Connect (OSTI)

A Collection of Presentations on new techniques for developing climatological estimates of the solar resource at all locations on earth at a resolution of 100km, and of developing estimates at half-hour intervals at resolutions of 10 km or less in specific locations.

Renne, D.

1999-06-28T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Satellite observations of ozone and nitrogen dioxide: from retrievals to emission estimates  

E-Print Network [OSTI]

Satellite observations of ozone and nitrogen dioxide: from retrievals to emission estimates #12 Satellite observations of ozone and nitrogen dioxide: from retrievals to emission es- timates / by Bas Subject headings: satellite retrieval / nitrogen dioxide / ozone / air pollution / emis- sion estimates

Haak, Hein

362

How hazardous is the Sahara Desert crossing for migratory birds? Indications from satellite tracking of raptors  

Science Journals Connector (OSTI)

...Newton 2008), and satellite tracking may be a powerful...condition and age, weather condition and prey situation...also demonstrates that satellite tracking can be a powerful...Falconiformes Flight, Animal Satellite Communications Weather

2010-01-01T23:59:59.000Z

363

2006 EUMETSAT METEOROLOGICAL SATELLITE CONFERENCE Helsinki, Finland 12 -16 June 2006  

E-Print Network [OSTI]

, satellite products, method, results, conclusions and applications. INTRODUCTION TO (KNMI) WEATHER RADARS2006 EUMETSAT METEOROLOGICAL SATELLITE CONFERENCE Helsinki, Finland 12 - 16 June 2006 Synergetic Satellite and radar products are important data sources for operational meteorology. They provide

Stoffelen, Ad

364

1.4Tb Real-Time Alien Superchannel Transport Demonstration over 410km Installed Fiber Link Using Software Reconfigurable DP-16QAM/QPSK  

Science Journals Connector (OSTI)

We successfully demonstrated, for the first time, 1.4Tb/s real-time Alien Superchannel over a 410km EDFA-only field fiber link using software reconfigurable DP-16QAM/QPSK production...

Zhou, Yu Rong; Smith, Kevin; Payne, Roger; Lord, Andrew; Raddatz, Lutz; Bertolini, Marco; Van De Velde, Tony; Colombo, Claudio; Korkmaz, Eyup; Fontana, Michele; Evans, Steve

365

Location of the M 2.0 Earthquake on 08/22/2010 that Occurred 25 km North of West Valley, New York.  

E-Print Network [OSTI]

1 Location of the M 2.0 Earthquake on 08/22/2010 that Occurred 25 km North of West Valley, New York at 16:41:47 (UTC) about 25 km north of West Valley, New York. There were no felt reports by residents and their distribution is plotted in Figure 2. 22 August 2010, Md 2.0 Earthquake 15 miles north of West Valley, NY -78

366

Optimal reconfiguration of satellite constellations with the auction algorithm  

Science Journals Connector (OSTI)

Traditionally, satellite constellation design has focused on optimizing global, zonal or regional coverage with a minimum number of satellites. In some instances, however, it is desirable to deploy a constellation in stages to gradually expand capacity. This requires launching additional satellites and reconfiguring the existing on-orbit satellites. Also, a constellation might be retasked and reconfigured after it is initially fielded for operational reasons. This paper presents a methodology for optimizing orbital reconfigurations of satellite constellations. The work focuses on technical aspects for transforming an initial constellation A into a new constellation, B, typically with a larger number of satellites. A general framework was developed to study the orbital reconfiguration problem. The framework was applied to low Earth orbit constellations of communication satellites. This paper specifically addresses the problem of determining the optimal assignment for transferring on-orbit satellites in constellation A to constellation B such that the total ? V for the reconfiguration is minimized. It is shown that the auction algorithm, used for solving general network flow problems, can efficiently and reliably determine the optimum assignment of satellites of A to slots of B. Based on this methodology, reconfiguration maps can be created, which show the energy required for transforming one constellation into another as a function of type (Street-of-Coverage, Walker, Draim), altitude, ground elevation angle and fold of coverage. Suggested extensions of this work include quantification of the tradeoff between reconfiguration time and ? V , multiple successive reconfigurations, balancing propellant consumption within the constellation during reconfiguration as well as using reconfigurability as an objective during initial constellation design.

Olivier L. de Weck; Uriel Scialom; Afreen Siddiqi

2008-01-01T23:59:59.000Z

367

Surface Di-directional Reflectance Properties Over the ARM SGP Area from Satellite Multi-Platform Observations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Bi-Directional Reflectance Properties Bi-Directional Reflectance Properties Over the ARM SGP Area from Satellite Multi-Platform Observations Y. Luo, A. P. Trishchenko, and R. Latifovic Canada Centre for Remote Sensing Natural Resources Canada Ottawa, Ontario, Canada Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Introduction Surface albedo is an important parameter in atmospheric radiation research. Good knowledge of surface bi-directional reflectance distribution function (BRDF) is essential in order to obtain the hemispheric reflectance (albedo) using data from satellite systems, which only view the ground at particular angles. Linear kernel-driven BRDF models have been commonly used for simple operational implementation of

368

Satellite monitoring of the earth (K.-H. Szekielda) MARK R. ABBOTT  

Science Journals Connector (OSTI)

matic increase in the amount and variety of satellite observations of the ... viding a broad background in satellite sensing of the .... Monthly Weather Rev. 114:.

369

E-Print Network 3.0 - assessing satellite-based fire Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1999. The accuracy and reliability of satellite-based systems are largely impacted by weather... of satellite imagery which consequently affects the detection accuracy....

370

E-Print Network 3.0 - alos satellite imagery Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Lua *, Jixian... scar extents and fire severity for wildfire management and control. All-weather satellite radar imagery... Land Observing Satellite (ALOS) (January 2006-present,...

371

E-Print Network 3.0 - anti-satellite systems Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

successful test of an anti-satellite (Asat) weapon against an aging Chinese Feng Yun 1C weather satellite... Two Empirical Tests of Design Principles for Survivable System...

372

E-Print Network 3.0 - advanced satellite sensors Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

OF THOMAS R. KARL, L.H.D. Summary: to note raw satellite data and rapidly produced weather products derived from satellite sensors are rarely... , developed through decades...

373

Structure of the Co and FeK alpha(3,4) Satellite Spectra  

SciTech Connect (OSTI)

The K{alpha}{sub 3,4} satellite spectra, originating in the [1s2p]{sup -1}{yields} [2p]{sup -2} transition, were measured with high resolution for Co and Fe, using photoexcitation by tunable monochromatized synchrotron radiation. Fits to a phenomenological sum of Voigt functions and to ab initio relativistic Dirac-Fock-calculated spectra resolved the structure underlying the spectra. The dependence of the satellites' intensity on the excitation energy yielded accurate values for the excitation thresholds. The shake-theory-based Thomas model was found to deviate from the measured intensities, indicating near-threshold major contributions from non-shake excitation processes, such as the knockout, or 'two step one,' effect.

Daimant,R.; Sharon, R.; Caliebe, W.; Kao, C.; Deutsch, M.

2006-01-01T23:59:59.000Z

374

THE ORBITS AND MASSES OF THE MARTIAN SATELLITES AND THE LIBRATION OF PHOBOS  

SciTech Connect (OSTI)

This paper reports on an update to the orbits and masses of the Martian satellites Phobos and Deimos. We obtained the orbits by fitting a numerical integration to all available Earth-based astrometry through the opposition of 2003, spacecraft imaging observations through 2007, and the Doppler tracking of the Viking and Phobos 2 spacecraft; the Doppler data provide information on the satellite masses. Our dynamical model included the figure acceleration due to a librating Phobos; we determined the amplitude of the forced libration. We also took into account the secular acceleration of Phobos due to the tide that it raises on Mars and estimated the Martian tidal quality factor Q. We provide an assessment of the accuracy of the orbits and a geometrical description of the orbits in the form of mean elements.

Jacobson, R. A. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099 (United States)], E-mail: robert.jacobson@jpl.nasa.gov

2010-02-15T23:59:59.000Z

375

DEVELOPMENT OF IMPROVED TECHNIQUES FOR SATELLITE REMOTE SENSING OF CLOUDS AND RADIATION USING ARM DATA, FINAL REPORT  

SciTech Connect (OSTI)

During the period, March 1997 February 2006, the Principal Investigator and his research team co-authored 47 peer-reviewed papers and presented, at least, 138 papers at conferences, meetings, and workshops that were supported either in whole or in part by this agreement. We developed a state-of-the-art satellite cloud processing system that generates cloud properties over the Atmospheric Radiation (ARM) surface sites and surrounding domains in near-real time and outputs the results on the world wide web in image and digital formats. When the products are quality controlled, they are sent to the ARM archive for further dissemination. These products and raw satellite images can be accessed at http://cloudsgate2.larc.nasa.gov/cgi-bin/site/showdoc?docid=4&cmd=field-experiment-homepage&exp=ARM and are used by many in the ARM science community. The algorithms used in this system to generate cloud properties were validated and improved by the research conducted under this agreement. The team supported, at least, 11 ARM-related or supported field experiments by providing near-real time satellite imagery, cloud products, model results, and interactive analyses for mission planning, execution, and post-experiment scientific analyses. Comparisons of cloud properties derived from satellite, aircraft, and surface measurements were used to evaluate uncertainties in the cloud properties. Multiple-angle satellite retrievals were used to determine the influence of cloud structural and microphysical properties on the exiting radiation field.

Minnis, Patrick [NASA Langley Research Center, Hampton, VA

2013-06-28T23:59:59.000Z

376

A comparative study of reaction rate, species, and vibration-dissociation coupling models for an AOTV flowfield  

E-Print Network [OSTI]

and N Profiles at V=10 Km/s, RR2 + + 0 Profile at V=10 Km/s, RR2 + Coordinates, . V=10 Km/s, RR2 Veq model at V=10 Km/s, RR3 CVD model at V=10 Km/s, RR3 CVDV model at V=10 Km/s, RR3 CVDV-P model at V=10 Km/s, RR3 Park-L model at V=10 Km/s, RR3... Ns + N ? 1 8 ? c The CVDV model is similar to the CVD model to the extent that they share the same basic assumptions and formulation, except that equation (3) combines the vibrational rate equation of the CVD model plus two additional terms...

Bobskill, Glenn James

1988-01-01T23:59:59.000Z

377

Hardware demonstration of high-speed networks for satellite applications.  

SciTech Connect (OSTI)

This report documents the implementation results of a hardware demonstration utilizing the Serial RapidIO{trademark} and SpaceWire protocols that was funded by Sandia National Laboratories (SNL's) Laboratory Directed Research and Development (LDRD) office. This demonstration was one of the activities in the Modeling and Design of High-Speed Networks for Satellite Applications LDRD. This effort has demonstrated the transport of application layer packets across both RapidIO and SpaceWire networks to a common downlink destination using small topologies comprised of commercial-off-the-shelf and custom devices. The RapidFET and NEX-SRIO debug and verification tools were instrumental in the successful implementation of the RapidIO hardware demonstration. The SpaceWire hardware demonstration successfully demonstrated the transfer and routing of application data packets between multiple nodes and also was able reprogram remote nodes using configuration bitfiles transmitted over the network, a key feature proposed in node-based architectures (NBAs). Although a much larger network (at least 18 to 27 nodes) would be required to fully verify the design for use in a real-world application, this demonstration has shown that both RapidIO and SpaceWire are capable of routing application packets across a network to a common downlink node, illustrating their potential use in real-world NBAs.

Donaldson, Jonathon W.; Lee, David S.

2008-09-01T23:59:59.000Z

378

Solar Energy Resource Assessment in Chile: Satellite Estimation and Ground Station Measurement  

Science Journals Connector (OSTI)

Abstract The progress from the last four years in solar energy resource assessment for Chile is reported, including measurements from a ground station network spanning from two to three years of data, and satellite estimations from the recently developed Chile-SR model including two full years of data. The model introduces different treatments for the meteorological variables and the effective cloud cover computations which allow estimation of the global horizontal irradiation on an hourly basis. The BRL model of diffuse radiation is then applied in order to estimate the diffuse fraction and diffuse irradiation, from which the Direct horizontal irradiation is then computed. Direct normal irradiation is computed by applying proper solar geometry corrections to the direct horizontal irradiation. The satellite estimation model was developed as an adaptation from Brazil-SR model, with an improved formulation for altitude-corrected atmospheric parameters, and a novel formulation for calculating effective cloud covers while at the same time detecting and differentiating it from snow covers and salt lakes. The model is validated by comparison with ground station data. The results indicate that there are high radiation levels throughout the country. In particular, northern Chile is endowed with one of the highest solar resources in the world, although the resource variability is higher than previously thought.

Rodrigo A. Escobar; Alberto Ortega; Cristin Corts; Alan Pinot; Enio Bueno Pereira; Fernando Ramos Martins; John Boland

2014-01-01T23:59:59.000Z

379

Spatio-Temporal Modelling of Near-Surface Ocean Winds  

E-Print Network [OSTI]

Introduction Motivation Data Part I: Dynamical Model State-Space Model Kalman Filter Assimilation Algorithm contour map from the Wave Assimilation Model overlaid with satellite mea- surements. #12;Forecasts Overlaid With Satellite Measurements General wave height contour map from the Wave Assimilation Model

Malmberg, Anders

380

Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery  

Open Energy Info (EERE)

Of Quaternary Borate Deposits With Aster Satellite Imagery Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal Exploration Tool Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal Exploration Tool Details Activities (2) Areas (2) Regions (0) Abstract: Unavailable Author(s): C. Kratt, M. Coolbaugh, Wendy Calvin Published: GRC, 2006 Document Number: Unavailable DOI: Unavailable Multispectral Imaging At Rhodes Marsh Area (Kratt, Et Al., 2006) Multispectral Imaging At Teels Marsh Area (Kratt, Et Al., 2006) Rhodes Marsh Geothermal Area Teels Marsh Geothermal Area Retrieved from "http://en.openei.org/w/index.php?title=Remote_Detection_Of_Quaternary_Borate_Deposits_With_Aster_Satellite_Imagery_As_A_Geothermal_Exploration_Tool&oldid=389959

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery  

Open Energy Info (EERE)

Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery as a Geothermal Exploration Tool Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery as a Geothermal Exploration Tool Abstract In the Great Basin of the western United States, geothermal fluids are sometimes associated with surface crusts of borate evaporite minerals. These borates can therefore potentially serve as a geothermal exploration tool if they can be efficiently identified and mapped in the field. We demonstrate the effectiveness of using a field-portable ASD Fieldspec® spectroradiometer, and satellite-based Advanced Spaceborne Thermal and Emitted Reflectance Radiometer (ASTER) imagery for mapping borate minerals

382

ARM - PI Product - CCRS Landcover Maps From Satellite Data  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ProductsCCRS Landcover Maps From Satellite Data ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send PI...

383

Assesment and Prediction of Natural Hazards from Satellite Imagery  

E-Print Network [OSTI]

31(5) real-time assessments of natural hazards have beenAssessment and Prediction of Natural Hazards from Satellite459470 Assessment and prediction of natural hazards from

Gillespie, Thomas; Chu, Jasmine; Frankenberg, Elizabeth; Thomas, Duncan

2007-01-01T23:59:59.000Z

384

Satellite vibration measurements with an autodyne CO2 laser radar  

Science Journals Connector (OSTI)

Vibration signatures of the Low Power Atmospheric Compensation Experiment satellite were obtained with a ground-based CO2 laser radar. The laser radar operated in a cw mode...

Schultz, K I; Kocher, D G; Daley, J A; Theriault, J R; Spinks, J; Fisher, S

1994-01-01T23:59:59.000Z

385

Magnetic Fields of the Satellites of Jupiter and Saturn  

Science Journals Connector (OSTI)

This paper reviews the present state of knowledge about the magnetic fields and the plasma interactions associated with the major satellites of Jupiter and Saturn. As revealed by the data from a number of spac...

Xianzhe Jia; Margaret G. Kivelson; Krishan K. Khurana

2010-05-01T23:59:59.000Z

386

Plasma-satellite interaction driven magnetic field perturbations  

SciTech Connect (OSTI)

We report the first fully kinetic quantitative estimate of magnetic field perturbations caused by the interaction of a spacecraft with space environment. Such perturbations could affect measurements of geophysical magnetic fields made with very sensitive magnetometers on-board satellites. Our approach is illustrated with a calculation of perturbed magnetic fields near the recently launched Swarm satellites. In this case, magnetic field perturbations do not exceed 20 pT, and they are below the sensitivity threshold of the on-board magnetometers. Anticipating future missions in which satellites and instruments would be subject to more intense solar UV radiation, however, it appears that magnetic field perturbations associated with satellite interaction with space environment, might approach or exceed instruments' sensitivity thresholds.

Saeed-ur-Rehman, E-mail: surehman@ualberta.ca [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada); Theoretical Physics Division, PINSTECH, Nilore Islamabad 44000 (Pakistan); Marchand, Richard, E-mail: Richard.Marchand@ualberta.ca [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada)

2014-09-15T23:59:59.000Z

387

Monitoring Severe Weather in UKRAINE with Satellite Data  

Science Journals Connector (OSTI)

Severe weather events associated with deep convection such as ... remote sensing techniques such as radar and/or satellite. Ukraine currently has a few EUMETCast stations ... which provide real-time geostationary...

Oleksiy Kryvobok; Mykola Kulbida

2011-01-01T23:59:59.000Z

388

The Impact of Satellite Data on Global Numerical Weather Prediction  

Science Journals Connector (OSTI)

The European Centre for Medium Range Weather Forecasts (ECMWF) produces operational global forecasts ... state of the atmosphere at 12Z. The satellite data used in a global Numerical Weather Prediction (NWP) syst...

J. Pailleux

1987-01-01T23:59:59.000Z

389

Direct Use of Satellite Sounding Radiances in Numerical Weather Prediction  

Science Journals Connector (OSTI)

Since 1978, operational satellite soundings of the atmospheres temperature and humidity structure have been provided by the TIROS Operational Vertical Sounder (TONS) on the TIROS-N/NOAA series of polar orbiti...

J. R. Eyre; E. Andersson; A. P. McNally

1993-01-01T23:59:59.000Z

390

SWOT: The Surface Water & Ocean Topography Satellite Mission  

E-Print Network [OSTI]

SWOT: The Surface Water & Ocean Topography Satellite Mission Doug Alsdorf Byrd Polar Research Turkey launched Southeastern Anatolia Project (GAP): 22 dams 19 hydroelectric power plants n Irrigation (rather than evaporation). At first, permafrost melting increases lake storage, but continued melting

391

Determination of wind from Nimbus-6 satellite sounding data  

E-Print Network [OSTI]

DETERMINATION OF WIND FROM NIMBUS-6 SATELLITE SOUNDING DATA A Thesis by WILLIAM EVERETT CARLE Submitted to the Graduate College of Texas A&M University in partial fulfil!. ment of the requirement for the deg. . ec of MASTER OF SCIENCE... December 1979 Major Subject: Meteorology DETEIQ&INATION OE WIND PROS1 NINEDS-6 SATELLITE SOUNDING DATA A Thesis WILLIA11 EVERETT CARLE Aporoved as to style and content by: (Chairman of Commi tee) Nember) (Head of Department) December 1979...

Carle, William Everett

2012-06-07T23:59:59.000Z

392

Moisture burst structure in satellite water vapor imagery  

E-Print Network [OSTI]

-season satellite data over the eastern Pacific Ocean, Schroeder (1983) found that about 78% of the local severe weather outbreaks over North America were related to the interaction of a moisture burst with an extratropical weather system. He hypothesized... that the severe weather outbreak was due to the broad zone of upper tropospheric divergence between the polar jet and STJ, and the large momentum t ansport by the STJ which altered the midlatitude circulation. 12 CHAPTER III DATA A. Satellite Imagery...

Ulsh, David Joel

2012-06-07T23:59:59.000Z

393

Solar energy resource assessment in Chile: Satellite estimation and ground station measurements  

Science Journals Connector (OSTI)

Abstract The progress from the last four years in solar energy resource assessment for Chile is reported, including measurements from a ground station network spanning from two to three years of data, and satellite estimations from the recently developed Chile-SR model including two full years of data. The model introduces different procedures for the meteorological variables and the effective cloud cover computations that allow estimation of the global horizontal and diffuse irradiation on an hourly basis. Direct normal irradiation is computed by applying proper solar geometry corrections to the direct horizontal irradiation. The satellite estimation model was developed as an adaptation from Brazil-SR model, with an improved formulation for altitude-corrected atmospheric parameters, and a novel formulation for calculating effective cloud covers while at the same time detecting and differentiating it from snow covers and salt lakes. The model is validated by comparison with ground station data. The results indicate that there are high radiation levels throughout the country. In particular, northern Chile is endowed with one of the highest solar resources in the world.

Rodrigo A. Escobar; Cristin Corts; Alan Pino; Enio Bueno Pereira; Fernando Ramos Martins; Jos Miguel Cardemil

2014-01-01T23:59:59.000Z

394

Summer 2006, volume 3:2 Alaska Satellite Facility  

E-Print Network [OSTI]

such area is the Kivu Basin of East Africa. Located along the border of the Democratic Republic of the Congo' NYAMULAGIRA NYIRAGONGO DEM. REPUB. OF THE CONGO RWANDA LAKE KIVU GOMA 10 km 0 2? Figure 1 ­ RADARSAT-1

395

Comparison of the CALIPSO satellite and ground-based observations of cirrus clouds at the ARM TWP sites  

SciTech Connect (OSTI)

Statistics of ice cloud macrophysical and optical properties from the Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP) instrument on board the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite are compared with those from ground-based lidar observations over a 31 month period. Ground-based lidar observations are taken from the micropulse lidars (MPL) at the three Department of Energy Atmospheric Radiation Measurement (ARM) tropical western pacific (TWP) sites: Manus, Nauru and Darwin. CALIPSO observations show a larger cloud fraction at high altitudes while the ground-based MPLs show a larger cloud fraction at low altitudes. The difference in mean ice cloud top and base heights at the Manus and Nauru sites are all within 0.51 km, although differences are statistically significant. Mean ice cloud geometrical thickness agree to within 0.05 km at the Manus and Nauru sites. Larger differences exist at Darwin due to excessive degradation of the MPL output power during our sampling period. Both sets of observations show thicker clouds during the nighttime which may be real but could also be partially an artifact of the decreased signal-to-noise ratio during the daytime. The number of ice cloud layers per profile are also shown to be consistent after accounting for the difference in spatial resolution. For cloud optical depths, four different retrieval methods are compared, two for each set of observations. All products show that the majority of ice cloud optical depths ({approx}60%) fall below an optical depth of 0.2. For most comparisons all four retrievals agree to within the uncertainty intervals. We find that both CALIPSO retrievals agree best to ground-based optical depths when the lidar ratio in the latter is retrieved instead of set to a fixed value. Also thoroughly compared is the cloud properties for the subset of ice clouds which reside in the tropical tropopause layer (TTL).

Thorsen, Tyler J.; Fu, Q.; Comstock, Jennifer M.

2011-11-10T23:59:59.000Z

396

Expedition to the 30-km Chernobyl Exclusion Zone and the Utilization of its Experience in Education and Communication  

SciTech Connect (OSTI)

Between May 28 - June 4, 2005, under the organization of the Hungarian Nuclear Society (HNS) and the Hungarian Young Generation Network (HYGN) - which operates within the framework of the HNS - a scientific expedition visited the Chernobyl Nuclear Power Plant and the surrounding exclusion zone. The participants were young Hungarian nuclear professionals supervised by more experienced experts. The main scientific goals of the expedition were the followings: Get personal experiences in a direct way about the current status of the Chernobyl Power Plant and its surroundings, the contamination of the environment and about the doses. Gather information about the state of the shut down power plant and the shelter built above the damaged 4. unit. Training of young nuclear experts by performing on site measurements. The Hungarian expedition successfully achieved its objectives by performing wide-range of environmental and dosimetric measurements and collecting numerous biological and soil samples. Within the 30-km exclusion zone the influence of the accident occurred 20 years ago still could be measured clearly; however the level of the radioactivity is manageable in most places. The dosimetric measurements showed that no considerable exposure occurred among the members of the expedition. The analysis of samples has been started at the International Chernobyl Center in Slavutich. During the expedition not only environmental sampling and in-situ measurements were carried out but it was also well documented with photos and video recordings for educational, training and PR purposes. A documentary TV film was recorded during the expedition. The first-hand knowledge acquired during the expedition helps the authentic communication of the accident and its present-day consequences, which is especially important in 2006, 20 years after the Chernobyl accident. Since Ukraine and Hungary are neighbor countries the media constantly discuss the accident, the consequences and the risks of using nuclear energy. In addition in November 2005 Hungary's parliament approved plans to extend the lifetime of the country's four-unit nuclear power plant. In order to have the crucial public support for nuclear energy it is very important to dispel unrealistic dismay and misbelieves regarding these questions. Thus it is extremely beneficial to have a film on this topic created by nuclear professionals especially for the public audience. In 2005 a book on the Chernobyl accident was published in Hungary that covers this expedition in a full chapter [2]. We plan to present the film to the audience of the conference. (authors)

Aszodi, Attila; Yamaji, Bogdan [Institute of Nuclear Techniques, Budapest University of Technology and Economics, 1521 Budapest (Hungary); Silye, Judit [Hungarian Atomic Energy Authority, Nuclear Safety Directorate, H-1539 Budapest, P.O. Box 676 (Hungary); Pazmandi, Tamas [KFKI Atomic Energy Research Institute, H-1525 Budapest 114, P.O.B. 49. (Hungary)

2006-07-01T23:59:59.000Z

397

An investigation of extratropical cyclogenesis in the Gulf of Mexico using geosynchronous satellite information  

E-Print Network [OSTI]

Severe Storms Forecast Center Numerical Weather Prediction PVA SFSS SMS TCT TIROS VISSR Positive Vorticity Advection Satellite Field Service Station Synchronous Meteorological Satellite Equivalent Blackbody Temperature Cloud Top Temperature... Severe Storms Forecast Center Numerical Weather Prediction PVA SFSS SMS TCT TIROS VISSR Positive Vorticity Advection Satellite Field Service Station Synchronous Meteorological Satellite Equivalent Blackbody Temperature Cloud Top Temperature...

Heckman, Brian Eugene

2012-06-07T23:59:59.000Z

398

Distributed Numerical Weather Prediction via Satellite  

Science Journals Connector (OSTI)

This paper describes a recent undertaking in distributed numerical weather prediction via high data rate networks. The governing project involved the operation of a coupled mesoscale modeling system on widely separated supercomputers, and ...

Jordan G. Powers; Mark T. Stoelinga; William S. Boyd

1997-12-01T23:59:59.000Z

399

Posters A Comparison of Model-Simulated Relative Humidity with...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Posters A Comparison of Model-Simulated Relative Humidity with Satellite-Derived Cloudiness R. J. Alliss and S. Raman Department of Marine, Earth and Atmospheric Sciences North...

400

Multi-year Satellite and Surface Observations of AOD in support of Two-Column Aerosol Project (TCAP) Field Campaign  

SciTech Connect (OSTI)

We use combined multi-year measurements from the surface and space for assessing the spatial and temporal distribution of aerosol properties within a large (~400x400 km) region centered on Cape Cod, Massachusetts, along the East Coast of the United States. The ground-based Aerosol Robotic Network (AERONET) measurements at Marthas Vineyard Coastal Observatory (MVCO) site and Moderate Resolution Imaging Spectrometer (MODIS) sensors on board the Terra and Aqua satellites provide horizontal and temporal variations of aerosol optical depth, while the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) offers the altitudes of aerosol-layers. The combined ground-based and satellite measurements indicated several interesting features among which were the large differences in the aerosol properties observed in July and February. We applied the climatology of aerosol properties for designing the Two-Column Aerosol Project (TCAP), which is supported by the U.S. Department of Energys (DOEs) Atmospheric Radiation Measurement (ARM) Program. The TCAP field campaign involves 12-month deployment (started July 1, 2012) of the ground-based ARM Mobile Facility (AMF) and Mobile Aerosol Observing System (MAOS) on Cape Cod and complimentary aerosol observations from two research aircraft: the DOE Gulfstream-1 (G-1) and the National Aeronautics and Space Administration (NASA) B200 King Air. Using results from the coordinated G-1 and B200 flights during the recent (July, 2012) Intensive Observation Period, we demonstrated that the G-1 in situ measurements and B200 active remote sensing can provide complementary information on the temporal and spatial changes of the aerosol properties off the coast of North America.

Kassianov, Evgueni I.; Chand, Duli; Berg, Larry K.; Fast, Jerome D.; Tomlinson, Jason M.; Ferrare, R.; Hostetler, Chris A.; Hair, John

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Numerical Modeling At Coso Geothermal Area (1999) | Open Energy Information  

Open Energy Info (EERE)

9) 9) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Numerical Modeling Activity Date 1999 Usefulness not indicated DOE-funding Unknown Exploration Basis To determine three-dimensional P and S waves velocity structures Notes High precision P and S wave travel times for 2104 microearthquakes with focus <6 km are used in a non-linear inversion to derive high-resolution 3-D compressional and shear velocity structures at the Coso Geothermal Area. Block size for the inversion is 0.2 km horizontally and 0.5 km vertically and inversions are investigated in the upper 5 km of the geothermal area. Spatial resolution, calculated by synthetic modeling of a cross model at critical locations, is estimated to be 0.35 km for Vp and 0.5 km for V s . In the 2 km southwest Sugarloaf region, we found low V p

402

SATELLITES IN MILKY-WAY-LIKE HOSTS: ENVIRONMENT DEPENDENCE AND CLOSE PAIRS  

SciTech Connect (OSTI)

Previous studies showed that an estimate of the likelihood distribution of the Milky Way (MW) halo mass can be derived using the properties of the satellites similar to the Large and Small Magellanic Clouds (LMC and SMC). However, it would be straightforward to interpret such an estimate only if the properties of the Magellanic Clouds (MCs) are fairly typical and are not biased by the environment. In this study, we explore whether the environment of the MW affects the properties of the SMC and LMC such as their velocities. To test for the effect of the environment, we compare velocity distributions for MC-sized subhalos around MW hosts in a sample selected simply by mass and in the second sample of such halos selected with additional restrictions on the distance to the nearest cluster and the local galaxy density, designed to mimic the environment of the Local Group (LG). We find that satellites in halos in the LG-like environments do have somewhat larger velocities, as compared to the halos of similar mass in the sample without environmental constraints. For example, the fraction of subhalos matching the velocity of the LMC is 23% {+-} 2% larger in the LG-like environments. We derive the host halo likelihood distribution for the samples in the LG-like environment and in the control sample and find that the environment does not significantly affect the derived likelihood. We use the updated properties of the SMC and LMC to derive the constraint on the MW halo mass of log(M{sub 200}/M{sub Sun }) = 12.06{sub -0.19}{sup +0.31} (90% confidence interval). We also explore the incidence of close pairs with relative velocities and separations similar to those of the LMC and SMC and find that such pairs are quite rare among {Lambda}CDM halos. Only 2% of halos in the MW mass range have a relatively close pair ({Delta}r < 40 kpc and {Delta}s < 160 km s{sup -1}) of subhalos with circular velocities v{sub circ} > 50 km s{sup -1}. Pairs with masses and separations similar to those of the LMC and SMC ({Delta}r{sub MC} = 23.4 {+-} 10 kpc and {Delta}s{sub MC} = 128 {+-} 32 km s{sup -1}) are found only in one out of Almost-Equal-To 30, 000 MW-sized halos. Interestingly, the halo mass likelihood distribution for host halos constrained to have MC-like close pairs of subhalos is quite different from the global likelihood from which the MW halo mass constraint discussed above was derived. Taking into account the close separation of the MCs in the Busha et al. method results in the shift of the MW halo mass estimate to smaller masses, with the peak shifting approximately by a factor of two.

Gonzalez, Roberto E.; Kravtsov, Andrey V.; Gnedin, Nickolay Y., E-mail: regonzar@oddjob.uchicago.edu [Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States)

2013-06-20T23:59:59.000Z

403

Greenland ice sheet surface mass-balance modeling in a 131-year perspective, 1950-2080  

SciTech Connect (OSTI)

Fluctuations in the Greenland Ice Sheet (GrIS) surface mass-balance (SMB) and freshwater influx to the surrounding oceans closely follow climate fluctuations and are of considerable importance to the global eustatic sea level rise. SnowModel, a state-of-the-art snow-evolution modeling system, was used to simulate variations in the GrIS melt extent, surface water balance components, changes in SMB, and freshwater influx to the ocean. The simulations are based on the IPCC scenario AlB modeled by the HIRHAM4 RCM (using boundary conditions from ECHAM5 AOGCM) from 1950 through 2080. In-situ meteorological station (GC-Net and WMO DMI) observations from inside and outside the GrIS were used to validate and correct RCM output data before it was used as input for SnowModel. Satellite observations and independent SMB studies were used to validate the SnowModel output and confirm the model's robustness. We simulated a {approx}90% increase in end-of-summer surface melt extent (0.483 x 10{sup 6} km{sup 2}) from 1950 to 2080, and a melt index (above 2,000-m elevation) increase of 138% (1.96 x 10{sup 6} km{sup 2} x days). The greatest difference in melt extent occured in the southern part of the GrIS, and the greatest changes in the number of melt days was seen in the eastern part of the GrIS ({approx}50-70%) and was lowest in the west ({approx}20-30%). The rate of SMB loss, largely tied to changes in ablation processes, lead to an enhanced average loss of 331 km{sup 3} from 1950 to 2080, an average 5MB level of -99 km{sup 3} for the period 2070-2080. GrIS surface freshwater runoff yielded an eustatic rise in sea level from 0.8 {+-} 0.1 (1950-1959) to 1.9 {+-} 0.1 mm (2070-2080) sea level equivalent (SLE) y{sup -1}. The accumulated GrIS freshwater runoff contribution from surface melting equaled 160 mm SLE from 1950 through 2080.

Mernild, Sebastian Haugard [Los Alamos National Laboratory; Liston, Glen [COLORADO STATE UNIV.; Hiemstra, Christopher [COLORADO STATE UNIV.; Christensen, Jens [DANISH METEOROLOGICAL INS.

2009-01-01T23:59:59.000Z

404

ShoreZone in the Arctic 8,000 km of Coastal Habitat Mapping Cathy Coon, Bureau of Ocean Energy Management, catherine.coon@boem.gov  

E-Print Network [OSTI]

Deadhorse Kotzebue Sound BOEM North Slope Imagery - 1,900 km BOEM North Slope Shore Stations National Park a continental-scale characterization of the arctic shoreline and support planning efforts related to oils spills Krusenstern, north of Kotzebue #12;Point Lay Wales Kotzebue Wainwright Cape Lisburne Kaktovik BARROW Point

405

Genomic scans detect signatures of selection along a salinity gradient in populations of the intertidal seaweed Fucus serratus on a 12 km scale  

E-Print Network [OSTI]

Genomic scans detect signatures of selection along a salinity gradient in populations of the seaweed Fucus serratus spaced along a 12 km intertidal shore with a steep salinity gradient. Under Outlier loci Salinity stress Detecting natural selection in wild populations is a central challenge

Teixeira, Sara

406

PSR B0329+54: Substructure in the scatter-broadened image discovered with RadioAstron on baselines of up to 235,000 km  

E-Print Network [OSTI]

We studied scattering properties of the pulsar PSR B0329+54 with a ground-space radio interferometer RadioAstron which included the 10-m Space Radio Telescope, the 110-m Green Bank Telescope, the 14x25-m Westerbork Synthesis Radio Telescope, and the 64-m Kalyazin Radio Telescope. The observations were performed at 324 MHz on baselines of up to 235,000 km in November 2012 and January 2014. At short ground-space baselines of less than about 20,000 km, the visibility amplitude decreases with the projected baseline length, providing a direct measurement of the diameter of the scattering disk of 4.7$\\pm$0.9 mas. The size of the diffraction spot near Earth is 15,000$\\pm$3,000 km. At longer baselines of up to 235,000 km, where no interferometric detection of the scattering disk would be expected, significant visibilities were observed with amplitudes scattered around a constant value. These detections result in a discovery of a substructure in the completely resolved scatter-broadened image of the pointlike source, ...

Popov, M V; Bartel, N; Gwinn, C R; Johnson, M D; Joshi, B C; Kardashev, N S; Karuppusamy, R; Kovalev, Y Y; Kramer, M; Rudnitskii, A G; Safutdinov, E R; Shishov, V I; Smirnova, T V; Soglasnov, V A; Zensus, J A; Zhuravlev, V I

2015-01-01T23:59:59.000Z

407

Tracking target objects orbiting earth using satellite-based telescopes  

DOE Patents [OSTI]

A system for tracking objects that are in earth orbit via a constellation or network of satellites having imaging devices is provided. An object tracking system includes a ground controller and, for each satellite in the constellation, an onboard controller. The ground controller receives ephemeris information for a target object and directs that ephemeris information be transmitted to the satellites. Each onboard controller receives ephemeris information for a target object, collects images of the target object based on the expected location of the target object at an expected time, identifies actual locations of the target object from the collected images, and identifies a next expected location at a next expected time based on the identified actual locations of the target object. The onboard controller processes the collected image to identify the actual location of the target object and transmits the actual location information to the ground controller.

De Vries, Willem H; Olivier, Scot S; Pertica, Alexander J

2014-10-14T23:59:59.000Z

408

Secure unicast and multicast over satellite DVB using chaotic generators  

Science Journals Connector (OSTI)

Today's communication technology research is characterised by a powerful 'all IP' trend. There is already a strong internet backbone in place that has the capacity to offer high quality services to the most users. However, in some cases, the 'last mile' problem remains to be solved and one of the possibilities to resolve this problem is the satellite digital video broadcasting (DVB). This paper proposes a security upgrade for IP communications over satellite DVB that is suited for the characteristics of satellite communications and that offers support for both unicast and multicast communications. The usage of chaotic functions is proposed both for the generation of new keys and for the encryption of data. We propose the use of a strong chaotic key generator and of a robust encryption algorithm, which have been previously studied, to enhance the properties of the system. They offer strong cryptographic properties and low computational requirements.

Daniel Caragata; Safwan El Assad; Hassan Noura; Ion Tutanescu

2010-01-01T23:59:59.000Z

409

Creating a Software Framework for Simulating Satellite Geolocation  

SciTech Connect (OSTI)

It is hard to imagine life these days without having some sort of electronic indication of one's current location. Whether the purpose is for business, personal, or emergency use, utilizing smart cell phones, in-vehicle navigation systems, or location beacons, dependence on the Global Positioning System (GPS) is pervasive. Yet the availability of the GPS should not be taken for granted. Both environmental (e.g., terrain, weather) and intentional interference (i.e., jamming) can reduce or deny satellite access. In order to investigate these and other issues, as well as to explore possible alternative satellite constellations, an application called the Satellite Simulation Toolkit (SatSim) was created. This paper presents a high-level overview of SatSim and an example of how it may be used to study geolocation.

Koch, Daniel B [ORNL

2011-01-01T23:59:59.000Z

410

A Note on Dynamic Data Driven Wildfire Modeling , L.P. Franca1  

E-Print Network [OSTI]

to the internet by a consumer- grade cheap broadband satellite connection and satellite data phones. 3 Weather. A proposed system for real-time modeling of wildfires is described. The system involves numerical weather in the field connected to the Internet via a satellite. 1 Introduction Today, there exists virtually

Douglas, Craig C.

411

Analysis of Cloud Variability and Sampling Errors in Surface and Satellite Mesurements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Analysis of Cloud Variability and Sampling Errors in Analysis of Cloud Variability and Sampling Errors in Surface and Satellite Measurements Z. Li, M. C. Cribb, and F.-L. Chang Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland A. P. Trishchenko and Y. Luo Canada Centre for Remote Sensing Ottawa, Ontario, Canada Introduction Radiation measurements have been widely employed for evaluating cloud parameterization schemes and model simulation results. As the most comprehensive program aiming to improve cloud parameteri- zation schemes, the Atmospheric Radiation Measurement (ARM) Program has an essential goal to make observations on the scale of a general circulation model gridbox, so as to define the physics underlying some of the important parameterizations in the general circulation models used in climate change

412

Satellite imagery tracks currents in Gulf of Mexico  

SciTech Connect (OSTI)

With the onset of drilling in the Gulf of Mexico at water depths in excess of 300m, detection and location of the boundaries of high speed current zones has become important in preventing downtime in drilling and production operations. This article reports on the use of satellite imagery to track currents in the Gulf of Mexico.

Huh, O.K. (Louisiana State Univ., Baton Rouge, LA (USA). Coastal Studies Inst.); Schaudt, K.J. (Marathon Oil Co., Houston, TX (US))

1990-05-07T23:59:59.000Z

413

Aerospace Power & Electronics Simulation Workshop 2004 Satellite Attitude Control  

E-Print Network [OSTI]

Aerospace Power & Electronics Simulation Workshop 2004 · Satellite Attitude Control System Design Using Reaction Wheels Bhanu Gouda Brian Fast Dan Simon #12;2Aerospace Power & Electronics Simulation;3Aerospace Power & Electronics Simulation Workshop 2004 ADCS ·ADCS: Attitude Determination and Control

Simon, Dan

414

Short term forecasting of solar radiation based on satellite data  

E-Print Network [OSTI]

Short term forecasting of solar radiation based on satellite data Elke Lorenz, Annette Hammer University, D-26111 Oldenburg Forecasting of solar irradiance will become a major issue in the future integration of solar energy resources into existing energy supply structures. Fluctuations of solar irradiance

Heinemann, Detlev

415

Wind energy calculated from SAR and scatterometer satellite data  

E-Print Network [OSTI]

. · Offshore wind resources estimated from SAR · On WASP · Wind indexing based on scatterometer · Wake effects footprint 62 m footprint Wind field maps from SAR are valid for 10 m height #12;7 Slide no. 62 m 10 m Upwind1 Slide no. 4 Wind energy calculated from SAR and scatterometer satellite data Charlotte Bay

416

Because of its excellence in satellite-based research,  

E-Print Network [OSTI]

winds, which show their mixing power and driving force for ocean currents, as well as the strength heights, which show currents in the upper ocean, along with significant wave heights. · MicrowaveStudying the Ocean from Space Because of its excellence in satellite-based research, the College

Kurapov, Alexander

417

AIAA 2004-3150 ARCHITECTING A COMMUNICATION SATELLITE PRODUCT LINE  

E-Print Network [OSTI]

Philip Springmann Massachusetts Institute of Technology 77 Massachusetts Ave, Cambridge, MA 02139 of commercial communication satellites. NOMENCLATURE SAA solar array area radiatorA thermal radiator area c deployed length of solar array M number of active components ) number of available components (M mass of N

de Weck, Olivier L.

418

Molecular biology study of satellite panicum mosaic virus capsid protein  

E-Print Network [OSTI]

Satellite panicum mosaic virus (SPMV) depends on its helper Panicum mosaic virus (PMV) for replication and movement in host plants. The positive-sense single-stranded genomic RNA of SPMV encodes a 17-kDa capsid protein (CP) to form 16-nm virions...

Qi, Dong

2009-05-15T23:59:59.000Z

419

Satellite measurements of the clear-sky greenhouse effect from  

E-Print Network [OSTI]

LETTERS Satellite measurements of the clear-sky greenhouse effect from tropospheric ozone HELEN M of 0.48±0.14 W m-2 between 45 S and 45 N. This estimate of the clear-sky greenhouse effect from

Waliser, Duane E.

420

NOAA Satellite and Information Service Deep Space Climate Observatory (DSCOVR)  

E-Print Network [OSTI]

such as the commercial airline, electric power and GPS industries. Our national security and economic well-being, whichNOAA Satellite and Information Service Deep Space Climate Observatory (DSCOVR) Background: DSCOVR will maintain the Nation's solar wind observations, which are critical to maintaining the accuracy and lead time

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Solar Power Satellites: Creating the Market for Beamed Energy Propulsion  

SciTech Connect (OSTI)

Beamed energy advocates must investigate the potential of major markets like space based solar satellites and space-based nuclear waste disposal. For BEP to succeed, its proponents must work with these possible users to generate interest and resources needed to develop BEP.

Coopersmith, Jonathan [Dept. of History, Texas A and M University, College Station, TX 77843 (United States)

2010-05-06T23:59:59.000Z

422

Roadway tunnel air quality models  

Science Journals Connector (OSTI)

Roadway tunnel air quality models ... Analysis of 13 tunnel studies quantifies the decline since 1961 in benzo[a]pyrene emitted into the air per km of travel by U.S. road vehicles. ...

Tai Y. Chang; Sara J. Rudy

1990-05-01T23:59:59.000Z

423

Computing and Visualizing Reachable Volumes for Maneuvering Satellites  

SciTech Connect (OSTI)

Detecting and predicting maneuvering satellites is an important problem for Space Situational Awareness. The spatial envelope of all possible locations within reach of such a maneuvering satellite is known as the Reachable Volume (RV). As soon as custody of a satellite is lost, calculating the RV and its subsequent time evolution is a critical component in the rapid recovery of the satellite. In this paper, we present a Monte Carlo approach to computing the RV for a given object. Essentially, our approach samples all possible trajectories by randomizing thrust-vectors, thrust magnitudes and time of burn. At any given instance, the distribution of the 'point-cloud' of the virtual particles defines the RV. For short orbital time-scales, the temporal evolution of the point-cloud can result in complex, multi-reentrant manifolds. Visualization plays an important role in gaining insight and understanding into this complex and evolving manifold. In the second part of this paper, we focus on how to effectively visualize the large number of virtual trajectories and the computed RV. We present a real-time out-of-core rendering technique for visualizing the large number of virtual trajectories. We also examine different techniques for visualizing the computed volume of probability density distribution, including volume slicing, convex hull and isosurfacing. We compare and contrast these techniques in terms of computational cost and visualization effectiveness, and describe the main implementation issues encountered during our development process. Finally, we will present some of the results from our end-to-end system for computing and visualizing RVs using examples of maneuvering satellites.

Jiang, M; de Vries, W H; Pertica, A J; Olivier, S S

2011-09-11T23:59:59.000Z

424

An Investigation on the Accuracy of Regional Ocean Models Through Field Trials  

E-Print Network [OSTI]

of satellite technology, autonomous marine vehicles, and sensors placed on drifting platforms have made grids (resolutions of 12, 9, 3 and 1 km) from the ROMS run by the Jet Propulsion Laboratory. Image courtesy of Yi Chao, Jet Propulsion Laboratory. The complexity of oceanic processes and the chronic

Smith, Ryan N.

425

1Hinode Satellite Power The Hinode satellite weighs approximately 700 kg (dry) and carries 170 kg of gas for  

E-Print Network [OSTI]

for up to two years. The satellite has two solar panels (blue) that produce all of the spacecraft's power. The panels are 4 meters long and 1 meter wide, and are covered on both sides by solar cells. Problem 1 - What is the total area of the solar panels covered by solar cells in square centimeters? Problem 2 - If a solar cell

426

Optimized Analysis of Cold Energy Utilization for Cold Storage Project of Xingtan LNG Satellite Station  

Science Journals Connector (OSTI)

The project of cold energy utilization for cold storage of Xingtan LNG satellite station is the first cold energy utilization demonstration project of LNG satellite station in China with (24...4 m3/day gasificat...

Wendong Xu; Zhonghao Huang; Shuanshi Fan

2014-01-01T23:59:59.000Z

427

Synchronization of system-of-systems interfaces in military satellite communications  

E-Print Network [OSTI]

Military systems continue to become more complex and nearly all are now part of one or more system of systems (SoS). Military satellite communications programs have expanded over the last decade from three distinct satellite ...

Davis, Mark J. (Mark Jeffrey)

2008-01-01T23:59:59.000Z

428

IBEX satellite finds ribbon-like structure at edge of heliosphere  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

IBEX satellite IBEX satellite finds ribbon-like structure at edge of heliosphere The NASA IBEX mission has sent back data that indicates a "noodle soup" of solar material has...

429

Quantifying the Hygroscopic Growth of Marine Boundary Layer Aerosols by Satellite-base and Buoy Observations  

Science Journals Connector (OSTI)

In this study, collocated satellite and buoy observations as well as satellite observations over an extended region during 2006-2010 were used to quantify the humidity effects on marine boundary layer (MBL) aerosols. Although the near-surface ...

Tao Luo; Renmin Yuan; Zhien Wang; Damao Zhang

430

Weather Forecasting System Based on Satellite Imageries Using Neuro-fuzzy Techniques  

Science Journals Connector (OSTI)

We have built an automated Satellite Images Forecasting System with Neuro-Fuzzy techniques. Firstly, Subtractive Clustering is applied on to a satellite image to extract the locations of the clouds. This is follo...

Chien-Wan Tham; Sion-Hui Tian; Liya Ding

2002-01-01T23:59:59.000Z

431

Adaptive Congestion Control Under Dynamic Weather Condition for Wireless and Satellite Networks  

Science Journals Connector (OSTI)

Broadband satellite-based IP networks have been considered as ... strong and promising next-generation market. In satellite communication systems, the channel performance might be severely degraded due to the dyn...

Hongqing Zeng; Anand Srinivasan; Brian Cheng

2007-01-01T23:59:59.000Z

432

The Availability and Use of Satellite Pictures in Recognizing Hazardous Weather  

Science Journals Connector (OSTI)

In the last few years tremendous advances have been made in providing real time satellite pictures to meteorologists. Concurrently, meteorologists have ... in their operational use of these pictures. Satellite pi...

Stanley E. Wasserman

1977-01-01T23:59:59.000Z

433

Aerosol Indirect Effect on the Grid-scale Clouds in the Two-way Coupled WRF-CMAQ: Model Description, Development, Evaluation and Regional Analysis  

SciTech Connect (OSTI)

This study implemented first, second and glaciations aerosol indirect effects (AIE) on resolved clouds in the two-way coupled WRF-CMAQ modeling system by including parameterizations for both cloud drop and ice number concentrations on the basis of CMAQpredicted aerosol distributions and WRF meteorological conditions. The performance of the newly-developed WRF-CMAQ model, with alternate CAM and RRTMG radiation schemes, was evaluated with the observations from the CERES satellite and surface monitoring networks (AQS, IMPROVE, CASTNet, STN, and PRISM) over the continental U.S. (CONUS) (12-km resolution) and eastern Texas (4-km resolution) during August and September of 2006. The results at the AQS surface sites show that in August, the NMB values for PM2.5 over the eastern/western U.S (EUS/WUS) and western U.S. (WUS) are 5.3% (?0.1%) and 0.4% (-5.2%) for WRF-CMAQ/CAM (WRF-CMAQ/RRTMG), respectively. The evaluation of PM2.5 chemical composition reveals that in August, WRF-CMAQ/CAM (WRF-CMAQ/RRTMG) consistently underestimated the observed SO4 2? by -23.0% (-27.7%), -12.5% (-18.9%) and -7.9% (-14.8%) over the EUS at the CASTNet, IMPROVE and STN sites, respectively. Both models (WRF-CMAQ/CAM, WRF-CMAQ/RRTMG) overestimated the observed mean OC, EC and TC concentrations over the EUS in August at the IMPROVE sites. Both models generally underestimated the cloud field (SWCF) over the CONUS in August due to the fact that the AIE on the subgrid convective clouds was not considered when the model simulations were run at the 12 km resolution. This is in agreement with the fact that both models captured SWCF and LWCF very well for the 4-km simulation over the eastern Texas when all clouds were resolved by the finer domain. Both models generally overestimated the observed precipitation by more than 40% mainly because of significant overestimation in the southern part of the CONUS in August. The simulations of WRF-CMAQ/CAM and WRF-CMAQ/RRTMG show dramatic improvements for SWCF, LWCF, COD, cloud fractions and precipitation over the ocean relative to those of WRF default cases in August. The model performance in September is similar to that in August except for greater overestimation of PM2.5 due to the overestimations of SO4 2-, NH4 +, NO3 -, and TC over the EUS, less underestimation of clouds (SWCF) over the land areas due to about 10% lower SWCF values and less convective clouds in September.

Yu, Shaocai; Mathur, Rohit; Pleim, Jonathan; Wong, David; Gilliam, R.; Alapaty, Kiran; Zhao, Chun; Liu, Xiaohong

2014-10-24T23:59:59.000Z

434

The use of satellite cloud pictures to determine average relative humidity below 500 mb  

E-Print Network [OSTI]

satellite cloud photographs "an be used in numeri=al weather prediction. Other examples are certain to evolve as better techniques for photograph interpretation are developed, The primary objective of this research was to deter- mine the relationships... recorded from the 0000 GCT reports. The satellit pictures used in this study were ob- tained from the Meteorological Satellite Laboratory of the U. S Weather Bur au (National Weather Satellite Center, 1965a and 1965b). The dates selected...

West, Philip Walter

2012-06-07T23:59:59.000Z

435

Meltwater flux and runoff modeling in the abalation area of jakobshavn Isbrae, West Greenland  

SciTech Connect (OSTI)

The temporal variability in surface snow and glacier melt flux and runoff were investigated for the ablation area of lakobshavn Isbrae, West Greenland. High-resolution meteorological observations both on and outside the Greenland Ice Sheet (GrIS) were used as model input. Realistic descriptions of snow accumulation, snow and glacier-ice melt, and runoff are essential to understand trends in ice sheet surface properties and processes. SnowModel, a physically based, spatially distributed meteorological and snow-evolution modeling system was used to simulate the temporal variability of lakobshavn Isbrre accumulation and ablation processes for 2000/01-2006/07. Winter snow-depth observations and MODIS satellite-derived summer melt observations were used for model validation of accumulation and ablation. Simulations agreed well with observed values. Simulated annual surface melt varied from as low as 3.83 x 10{sup 9} m{sup 3} (2001/02) to as high as 8.64 x 10{sup 9} m{sup 3} (2004/05). Modeled surface melt occurred at elevations reaching 1,870 m a.s.l. for 2004/05, while the equilibrium line altitude (ELA) fluctuated from 990 to 1,210 m a.s.l. during the simulation period. The SnowModel meltwater retention and refreezing routines considerably reduce the amount of meltwater available as ice sheet runoff; without these routines the lakobshavn surface runoff would be overestimated by an average of 80%. From September/October through May/June no runoff events were simulated. The modeled interannual runoff variability varied from 1.81 x 10{sup 9} m{sup 3} (2001/02) to 5.21 x 10{sup 9} m{sup 3} (2004/05), yielding a cumulative runoff at the Jakobshavn glacier terminus of {approx}2.25 m w.eq. to {approx}4.5 m w.eq., respectively. The average modeled lakobshavn runoff of {approx}3.4 km{sup 3} y{sup -1} was merged with previous estimates of Jakobshavn ice discharge to quantify the freshwater flux to Illulissat Icefiord. For both runoff and ice discharge the average trends are similar, indicating increasing (insignificant) influx of freshwater to the Illulissat Icefiord for the period 2000/01-2006/07. This study suggests that surface runoff forms a minor part of the overall Jakobshavn freshwater flux to the fiord: around 7% ({approx}3.4 km{sup 3} y{sup -1}) of the average annual freshwater flux of {approx}51.0 km{sup 3} y{sup -1} originates from the surface runoff.

Mernild, Sebastian Haugard [Los Alamos National Laboratory; Chylek, Petr [Los Alamos National Laboratory; Liston, Glen [COLORADO STATE UNIV.; Steffen, Konrad [UNIV OF COLORADO

2009-01-01T23:59:59.000Z

436

Unified line profiles for hydrogen perturbed by collisions with protons: satellites and asymmetries  

E-Print Network [OSTI]

We present new calculations of unified line profiles for hydrogen perturbed by collisions with protons. We report on new calculations of the potential energies and dipole moments which allow the evaluation of profiles for the lines of the Lyman series up to Lyman$\\delta$ and the Balmer series up to Balmer10. Unified calculations only existed for the lines Lyman$\\alpha$ to Lyman$\\gamma$ and Balmer$\\alpha$ including the H$_2^+$ quasi-molecule. These data are available as online material accompanying this paper and should be included in atmosphere models, in place of the Stark effect of protons, since the quasi-molecular contributions cause not only satellites, but large asymmetries that are unaccounted for in models that assume Stark broadening of electrons and protons are equal.

Pelisoli, Ingrid; Kepler, S O

2015-01-01T23:59:59.000Z

437

The ESA's Climate Change Initiative is reprocessing and reassessing over 40 years of multi-sensor satellite records to generate consistent, traceable, long-term datasets of  

E-Print Network [OSTI]

The ESA's Climate Change Initiative is reprocessing and reassessing over 40 years of multi" for the climate modeling and research communities. THE ESA CLIMATE CHANGE INITIATIVE Satellite Data Records to our understanding of Earth's climate and how it is changing--one of the major challenges of the twenty

Boyer, Edmond

438

Observation of laser satellites in a plasma produced by a femtosecond laser pulse  

E-Print Network [OSTI]

that the laser x-ray satellites were predicted more than 20 years ago, they had not been observed until veryObservation of laser satellites in a plasma produced by a femtosecond laser pulse S. A. Pikuz P. N­459 10 October 1997 Laser satellites are detected in the emission spectra of magnesium and aluminum

Umstadter, Donald

439

or more than 50 years, NOAA has operated earth-observing satellites and collected, processed, and  

E-Print Network [OSTI]

, and distributed the data from these satellites to provide life-saving weather forecasts, measure ocean satellites are the backbone of weather forecasts, climate research, and environmental assessments that result, on web pages, and smart phone "apps" all rely on NOAA satellite data. A Weather-Ready Nation NOAA

440

Clusters in Hyper-Cubic Multi-Channel Satellite Imagery K.A. Hawick  

E-Print Network [OSTI]

satellites. Weather prediction it- self remains a challenging problem, not least due to the chaotic, but previously very successful GMS5 Japanese weather satellite[6]. Regularly sampled full-disk Earth image dataClusters in Hyper-Cubic Multi-Channel Satellite Imagery K.A. Hawick Computer Science, Massey

Hawick, Ken

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Polar Cloud Detection using Satellite Data with Analysis and Application of Kernel Learning Algorithms  

E-Print Network [OSTI]

in the processing of satellite observations in support of radiation budget, numerical weather prediction and globalAbstract Polar Cloud Detection using Satellite Data with Analysis and Application of Kernel Machine on the features. Boarding the same satellite as MISR, Moderate Resolution Imaging Spectrora

Shi, Tao

442

Probabilistic Simulation of Multi-Stage Decisions for Operation of a Fractionated Satellite Mission  

E-Print Network [OSTI]

decisions. We use a generic Department of Defense (DoD) terrestrial weather satellite program as a caseProbabilistic Simulation of Multi-Stage Decisions for Operation of a Fractionated Satellite Mission of net present value for a fractionated satellite constellation. The goal is to begin development

Alonso, Juan J.

443

Measurements of the offshore wave climate around the British Isles by satellite altimeter  

Science Journals Connector (OSTI)

...Southampton SO14 3ZH, UK 2 Satellite Observing Systems, 15 Church...Published online 19 November 2002 Satellite altimetry gives a new perspective...during the age of the ocean weather ships, at least at a few...Bacon & Carter 1991). Satellite altimetry brought a global...

2003-01-01T23:59:59.000Z

444

The understanding of length-of-day variations from satellite gravity and laser ranging measurements  

Science Journals Connector (OSTI)

......for Medium-Range Weather Forecasts (ECMWF...coefficient C 20 from the satellite laser ranging...for Medium-Range Weather Forecasts (ECMWF...estimated from the satellite laser ranging...for Medium-Range Weather Forecasts (ECMWF...Radiopositioning Integrated by Satellite (DORIS), lunar......

Shuanggen Jin; L. J. Zhang; B. D. Tapley

2011-02-01T23:59:59.000Z

445

A Survey of Congestion Control Techniques and Data Link Protocols in Satellite Networks1  

E-Print Network [OSTI]

-range communications 21 . Satellite applications range from navigation, weather monitoring and terrain observationsA Survey of Congestion Control Techniques and Data Link Protocols in Satellite Networks1 Sonia, jain, u, shivkumag@cis.ohio-state.edu Abstract Satellite communication systems are the means

Jain, Raj

446

Webcam2Satellite: Estimating Cloud Maps from Webcam Imagery Calvin Murdock  

E-Print Network [OSTI]

. Introduction Satellite imagery is a cornerstone of weather and envi- ronmental imaging. It captures large. In this paper we consider one satellite data product � the cloud imagery commonly used for weather prediction of creating large-scale weather maps. The idea of creating satellite maps from ground-based image sensors

Pless, Robert

447

Since the first manmade satellites orbited the earth in the 1950s, space  

E-Print Network [OSTI]

essential to national security. Satellites provide communica- tions and navigation for military per- sonnelSince the first manmade satellites orbited the earth in the 1950s, space assets have become. Naval strategists use satellite surveillance data to monitor ship move- ments, while meteorologists

Reuter, Martin

448

2013 Accomplishments Report NOAA Satellite and Information Service | www.nesdis.noaa.gov  

E-Print Network [OSTI]

satellites and other sources to promote, protect and enhance the Nation's economy, security, environment2013 Accomplishments Report NOAA Satellite and Information Service | www.nesdis.noaa.gov #12;1 From the Assistant Administrator 2 Satellites 4 Climate 6 Weather 8 Oceans 10 Coasts 12 Partnerships & Outreach 13

449

Detecting Ocean Currents from Satellite Altimetry, Satellite Gravity and Ocean Data  

Science Journals Connector (OSTI)

With the preparation and launch of the high accuracy geodetic missions CHAMP, GRACE and GOCE, the geoid models have been improved greatly. This gives us a good chance to combine a high precision sea surface heigh...

Zizhan Zhang; Yang Lu; Houtse Hsu

2007-01-01T23:59:59.000Z

450

Satellite and Surface Data Synergy for Developing a 3D Cloud Structure and Properties Characterization Over the ARM SGP. S...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Satellite and Surface Data Synergy for Developing Satellite and Surface Data Synergy for Developing a 3D Cloud Structure and Properties Characterization Over the ARM SGP Site Stage 1: Cloud Amounts, Optical Depths, and Cloud Heights Reconciliation I. Genkova and C. N. Long Pacific Northwest National Laboratory Richland, Washington P. W. Heck Analytical Services & Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction One of the primary Atmospheric Radiation Measurement (ARM) Program objectives is to obtain measurements applicable to the development of models for better understanding of radiative processes in the atmosphere. We address this goal by building a three-dimensional (3D) characterization of the

451

IBEX Satellite - Los Alamos in SPACE | National Security Science Magazine |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

IBEX Satellite IBEX Satellite Finds Ribbon-Like Structure at Edge of Heliosphere "" The invisible structures of space are becoming less so, as scientists look out to the far edges of the solar wind bubble that separates our solar system from the interstellar cloud through which it flies. Using the High Energy Neutral Atom Imager, led by Los Alamos National Laboratory, the NASA Interstellar Boundary Explorer (IBEX) mission has sent back data that indicates a "noodle soup" of solar material has accumulated at the outer fringes of the heliosphere bubble. As the solar wind streams out far beyond Pluto, racing a million miles per hour, it reaches the edge of our bubble and collides with the material between the stars, the interstellar medium. A shock wave forms at that

452

Who's In The Dark: Satellite Based Estimates Of Electrification Rates  

SciTech Connect (OSTI)

A technique has been developed to estimate the percent population having electric power access based on the presence of satellite detected nighttime lighting. A global survey was conducted for the year 2006 using nighttime lights collected by the U.S. Air Force Defense Meteorological Satellite Program (DMSP) in combination with the U.S. Department of Energy Landscan population dataset. The survey includes results for 229 countries and more than 2000 subnational units. The results are compared to reported electrification rates for 87 countries compiled from a variety of sources by the International Energy Agency. The DMSP derived estimate of number of people worldwide who lack access to electricity is 1.62 billion, only slightly larger than the 1.58 billion estimated by the International Energy Agency.

Elvidge, Christopher D. [NOAA National Geophysical Data Center,; Baugh, Kimberly E. [NOAA National Geophysical Data Center,; Sutton, Paul S. [University of Denver; Bhaduri, Budhendra L [ORNL; Tuttle, Benjamin T. [NOAA National Geophysical Data Center,; Ghosh, Tilottama [University of Denver; Ziskin, Daniel [University of Colorado, Boulder; Erwin, Edward [NOAA National Geophysical Data Center,

2011-01-01T23:59:59.000Z

453

Parametric vertical coordinate formulation for multiscale, Boussinesq, and non-Boussinesq ocean modeling  

E-Print Network [OSTI]

, but more faithfully represents satellite-observed ocean- bottom-pressure data. Such a generalized modeling coastal ocean predictions, climate simulations, data assimilations, and coupled physical

Hou, Thomas Yizhao

454

Galilean satellite eclipse studies. III - Jovian methane abundance  

SciTech Connect (OSTI)

The methane abundance in the lower Jovian stratosphere is measured using the Galilean satellite eclipse technique. The average mixing ratio at the locations measured is larger than the expected value for a solar abundance of carbon with the possibility of some zenographic variation. Observationally compatible values are found for the South Temperate Zone, the edge of the Great Red Spot and the South Tropical Zone, and the Great Red Spot.

Smith, D.W. (Washington, University, Seattle, Wash.); Greene, T.F.

1980-01-01T23:59:59.000Z

455

GALILEAN SATELLITES ASTR/GEOL 5800 Planetary Surfaces & Interiors  

E-Print Network [OSTI]

(launched 1989) but the high-gain antenna failed (!) leaving it crippled · Venus-Earth-Earth gravity assist pumped up to much higher values than if the satellites were not in a resonance J I EG One that didn't survive (why?) ­ Energy of accretion ~0.6 Gms/Rs per unit mass ~2 MJ/kg ­ this is enough to heat

Mojzsis, Stephen J.

456

Correlation of GSO satellite anomalies with space weather data  

Science Journals Connector (OSTI)

This work summarizes the main results of our studies at the ISRO cell of IIT-Mumbai, on the relationship between space weather and geostationary satellite anomalies. We point out that the essence of the problem is to understand quantitatively the relationships between changes in space weather at the Sun (S) and the dayside Lagrangian point (L1) on the one hand, and on the other hand the electron/proton fluxes and magnetic field changes at the geostationary altitude (G). Electromagnetic and cosmic ray changes at the Earth surface (E) are also related to the field and particle changes observed at G. We have evolved prediction programs for satellite anomalies based on proton events on the Sun, the solar wind speeds measured at L1, and the 2MeV electron flux enhancements observed at G. The probabilities and time lags of the occurrence of satellite anomalies are also governed by whether the shock in solar wind and IMF parameters detected at L1 is of a sharp or a diffuse type. From a comparative study of the two years 2005 and 2006 with very different space weather conditions, we find that the type and number of anomalies is (1) clearly governed by the magnitude of the interplanetary electric field E sw , and hence by the IMF B and (2) by the number of proton events on the Sun. We are currently exploring the role played by the ratio of 2MeV electrons to the > 1 MeV protons, both at G, in the occurrence of satellite anomalies.

C.G. Patil; Girija Rajaram; M.Y.S. Prasad

2008-01-01T23:59:59.000Z

457

The international status of intelligence-collecting reconnaissance satellites  

E-Print Network [OSTI]

May 1972 Major Subject: Political Science THE INTERNATIONAL STATUS OF INTELLIGENCE- COLLECTING RECONNAISSANCE SATELLITES A Thesis by BRENT ALLEN GATES Approved as to style and content by: (Chairman of Commit e) 09JD ' J 'd (Head of Department... and legal issues surrounding aerial reconnaissance are examined. It is shown that the rapid technological evolution of spaceborne reconnaissance systems which is taking place in the absence of international agreements governing these systems is a...

Gates, Brent Allen

1972-01-01T23:59:59.000Z

458

Impact of vegetation fraction from Indian geostationary satellite on short-range weather forecast  

Science Journals Connector (OSTI)

Indian economy is largely depending upon the agricultural productivity and thus influences the trade among the SAARC countries. High-resolution and good-quality regional weather forecasts are necessary for planners, resource managers, insurers and national agro-advisory services. In this study, high resolution updated land-surface state in terms of vegetation fraction (VF) from operational vegetation index products of Indian geostationary satellite (INSAT 3A) sensor (CCD) was utilized in numerical weather prediction (NWP) model (e.g. WRF) to investigate its impact on short-range weather forecast over the control run. Results showed that the updated vegetation fraction from INSAT 3A CCD improved the low-level 24h temperature (?18%) and moisture (?10%) forecast in comparison to control run. The 24h rainfall forecast was also improved (more than 5%) over central and southern India with the use of updated vegetation fraction compared to control experiment. INSAT 3A VF based experiment also showed a net improvement of 27% in surface sensible heat fluxes from WRF in comparison to control experiment when both were compared with area-averaged measurements from Large Aperture Scintillometer (LAS). This triggers the need of more and more use of realistic and updated land surface states through satellite remote sensing data as well as in situ micrometeorological measurements to improve the forecast quality, skill and consistency.

Prashant Kumar; Bimal K. Bhattacharya; P.K. Pal

2013-01-01T23:59:59.000Z

459

Satellite Parallaxes of Lensing Events Towards the Galactic Bulge  

E-Print Network [OSTI]

In order to understand the nature of the lenses that generate microlensing events, one would like to measure their mass, distance, and velocity. Unfortunately, current microlensing experiments measure only one parameter of the events, the characteristic timescale, which is a combination of the underlying physical parameters. Other methods are required to extract additional information. Parallax measurements using a satellite in an Earth-like orbit yield the projected velocity of the lens: ${\\bf{\\tilde v}} ={\\bf{v}}/(1-z)$, where ${\\bf{v}}$ is the transverse velocity (speed and direction) of the lens relative to the Earth-source line of sight, and $z$ is the ratio of the distances to the lens and the source. A measurement of ${\\bf{\\tilde v}}$ could distinguish between lenses belonging to the bulge and disk populations. We show that for photometric precisions of 1% to 2%, it is possible to measure the projected speed, $\\tilde v$, to an accuracy of $\\leq 10%$ for over 70% of disk lenses and over 60% of bulge lenses. For measuring the projected velocity ${\\bf{\\tilde v}}$, the percentages are 40% and {30%}, respectively. We find lines of sight $> 2^{\\circ}$ away from the ecliptic are preferable, and an Earth-satellite separation in the range $0.7 {\\rm{AU}} - 1.9{\\rm{AU}}$ is optimal. The requirements of the satellite for measuring the projected velocities of events towards the bulge are similar to those for measurements toward the LMC.

B. Scott Gaudi; Andrew Gould

1996-08-20T23:59:59.000Z

460

International Satellite Cloud Climatology Project (ISCCP) Radiance Calibration Report  

E-Print Network [OSTI]

This document describes the radiance calibrations used for all ISCCP Stage B3 data for the period July 1983 through June 1991 (Schiffer and Rossow 1985; Rossow et al. 1987; Brest and Rossow 1992; Desormeaux et al. 1992). Calibration is reported in three stages, called nominal, normalized and absolute. Equations and tables in the following sections define each of these calibrations. 1.1. NOMINAL CALIBRATION The nominal calibration (first set of tables on Stage B3 data tapes) represents the best information available at the start of processing of data from a particular satellite, usually the pre-launch calibration supplied by the satellite operator for the visible (VIS) channel (and other channels at solar wavelengths) and an equation or table used to interpret on-board calibration information for the infrared (IR) channel (and other channels at thermal infrared wavelengths). Specific details are given for each satellite in sections to follow. In this document, VIS radiances are given as "scaled radiances", L

William Rossow; Yves Desormeaux; Christopher L. Brest; Alison Walker

1992-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Macrophysical Properties of Tropical Cirrus Clouds from the CALIPSO Satellite and from Ground-based Micropulse and Raman Lidars  

SciTech Connect (OSTI)

Lidar observations of cirrus cloud macrophysical properties over the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) program Darwin, Australia site are compared from the Cloud-Aerosol Lidar and In- frared Pathfinder Satellite Observation (CALIPSO) satellite, the ground-based ARM micropulse lidar (MPL), and the ARM Raman lidar (RL). Comparisons are made using the subset of profiles where the lidar beam is not fully attenuated. Daytime measurements using the RL are shown to be relatively unaffected by the solar background and are therefore suited for checking the validity of diurnal cycles. RL and CALIPSO cloud fraction profiles show good agreement while the MPL detects significantly less cirrus, particularly during the daytime. Both MPL and CALIPSO observations show that cirrus clouds occur less frequently during the day than at night at all altitudes. In contrast, the RL diurnal cy- cle is significantly different than zero only below about 11 km; where it is the opposite sign (i.e. more clouds during the daytime). For cirrus geomet- rical thickness, the MPL and CALIPSO observations agree well and both datasets have signficantly thinner clouds during the daytime than the RL. From the examination of hourly MPL and RL cirrus cloud thickness and through the application of daytime detection limits to all CALIPSO data we find that the decreased MPL and CALIPSO cloud thickness during the daytime is very likely a result of increased daytime noise. This study highlights the vast im- provement the RL provides (compared to the MPL) in the ARM program's ability to observe tropical cirrus clouds as well as a valuable ground-based lidar dataset for the validation of CALIPSO observations and to help im- prove our understanding of tropical cirrus clouds.

Thorsen, Tyler J.; Fu, Qiang; Comstock, Jennifer M.; Sivaraman, Chitra; Vaughan, Mark A.; Winker, D.; Turner, David D.

2013-08-27T23:59:59.000Z

462

Irregular Satellites of the Planets: Products of Capture in the Early Solar System  

E-Print Network [OSTI]

All four giant planets in the Solar system possess irregular satellites, characterized by large, highly eccentric and/or inclined orbits that are distinct from the nearly circular, uninclined orbits of the regular satellites. This difference can be traced directly to different modes of formation. Whereas the regular satellites grew by accretion within circumplanetary disks the irregular satellites were captured from initially heliocentric orbits at an early epoch. Recently, powerful survey observations have greatly increased the number of known irregular satellites, permitting a fresh look at the group properties of these objects and motivating a re-examination of the mechanisms of capture. None of the suggested mechanisms, including gas-drag, pull-down, and three-body capture, convincingly fit the group characteristics of the irregular satellites. The sources of the satellites also remain unidentified.

David Jewitt; Nader Haghighipour

2007-03-03T23:59:59.000Z

463

The `Skyline' Distance 46km  

E-Print Network [OSTI]

swooping singletrack threading through beautiful forest to exposed rocky doubletrack on wide open hills-track ascent as White's Level and continuing on long, forest road climbs with sweet, flowing technical eto, byddwch yn barod. ynyGoedwig-intheForest Afan mountainbiking beiciomynydd Am wybodaeth bellach

464

Relaxing the Boussinesq Approximation in Ocean Circulation Models  

Science Journals Connector (OSTI)

There is a growing need for ocean circulation models that conserve mass rather than volume (as in traditional Boussinesq models). One reason is bottom pressure data expected to flow from satellite-mounted gravity-measuring instruments, and ...

Richard J. Greatbatch; Youyu Lu; Yi Cai

2001-11-01T23:59:59.000Z

465

Modeling  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a single-fluid diffuse interface model in the ALE-AMR hydrodynamics code to simulate surface tension effects. We show simula- tions and compare them to other surface tension...

466

Modeling  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sion effects. We show the result of a test case, and compare it to the result without surface tension. The model describes droplet formation nicely. Application The ARRA-funded...

467

An IMAGE Satellite Guide to Exploring the Earth's Magnetic Field 1 An IMAGE Satellite Guide to Exploring the Earth's Magnetic Field 2  

E-Print Network [OSTI]

observed by the IMAGE, HENA instrument. Some representative magnetic field lines are shown in whiteAn IMAGE Satellite Guide to Exploring the Earth's Magnetic Field 1 #12;An IMAGE Satellite Guide to Exploring the Earth's Magnetic Field 2 Dr. James Burch IMAGE Principal Investigator Dr. William Taylor Dr

468

Effects of unresolved satellite lines on lasing of extreme ultraviolet light with nitrogen plasma in a recombining phase  

SciTech Connect (OSTI)

Satellite lines with a high-lying spectator electron give unresolved spectral feature with respect to a parent resonance line. In our previous study [T. Ozawa et al., Phys. Plasmas 19, 063302 (2012)], population inversion between 3l and 2l of hydrogenlike nitrogen in a recombining phase was quantitatively estimated and the dielectronic-capture ladderlike processes, which implicitly include such doubly excited states as nln?l? (n=2?4,n??n), were found to be indispensable in the estimation of a gain. In this study, the population densities of the doubly excited states are explicitly calculated by a time-dependent collisional-radiative model with desired plasma conditions for the lasing of nitrogen Balmer-?, which is a parent resonance line of unresolved satellite lines 3ln?l??2ln?l?. The stimulated emission of the unresolved satellite lines caused by Balmer-? is found to reduce the population inversion between 3l and 2l, leading to essential saturation of the amplification of Balmer-? laser light.

Tatsumura, Nao; Yamamura, Shuhei; Ozawa, Takuya; Horioka, Kazuhiko; Kawamura, Tohru [Department of Energy Sciences, Tokyo Institute of Technology, Nagatsuta 4259, Midori, Yokohama, Kanagawa (Japan)] [Department of Energy Sciences, Tokyo Institute of Technology, Nagatsuta 4259, Midori, Yokohama, Kanagawa (Japan)

2013-08-15T23:59:59.000Z

469

Determination of Ice Water Path Over the ARM SGP Using Combined Surface and Satellite Datasets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Determination of Ice Water Path Over the ARM SGP Using Determination of Ice Water Path Over the ARM SGP Using Combined Surface and Satellite Datasets J. Huang, M. M. Khaiyer, and P. W. Heck Analytical Services & Materials, Inc. Hampton, Virginia P. Minnis and B. Lin Atmospheric Sciences National Aeronautics and Space Administration Langley Research Center Hampton, Virginia T.-F. Fan Science Applications International Corporation Hampton, Virginia Introduction Global information of cloud ice water path (IWP) is urgently needed for testing of global climate models (GCMs) and other applications. Accurate quantification of the IWP is essential for characterizing the hydrological and radiation budget. For example, the reflection of shortwave radiation by ice clouds reduces the solar energy reaching the earth's surface. Ice clouds can also trap the longwave radiation

470

Satellite Measurement of Upper Tropospheric Water Vapor: Development and Applications and Applications for the ARM Program  

SciTech Connect (OSTI)

Upper tropospheric humidity (UTH) measurements from the 6.7 micron channel on GOES (8, 9, 12) and GMS-5 satellites were employed to develop a near real-time UTH product that is now available from the ARM External Data Center (XDC). The UTH product is available in either gridded format (2.0 x 2.0 lat-lon resolution), full-disk pixel resolution, or individual pixel resolution for both the SGP and TWP sites. This product provides the basis for the instrument intercomparison and validation activities (Section 0.2), diurnal analysis and model evaluation (0.3), and cloud lifecycle studies (0.5); and is also an important component of the research proposed here. Full details regarding the retrieval algorithm for the ARM sites can be found in Soden et al. (2004a) and references therein.

Brian J. Soden

2005-01-11T23:59:59.000Z

471

Modeling  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALE-AMR ALE-AMR code Wangyi Liu, John Bernard, Alex Friedman, Nathan Masters, Aaron Fisher, Velemir Mlaker, Alice Koniges, David Eder June 4, 2011 Abstract In this paper we describe an implementation of a single-fluid inter- face model in the ALE-AMR code to simulate surface tension effects. The model does not require explicit information on the physical state of the two phases. The only change to the existing fluid equations is an additional term in the stress tensor. We show results of applying the model to an expanding Al droplet surrounded by an Al vapor, where additional droplets are created. 1 Introduction The Neutralized Drift Compression Experiment II (NDCX II) is an induction accelerator planned for initial commissioning in 2012. The final design calls for a 3 MeV, Li+ ion beam, delivered in a bunch with characteristic pulse duration of 1 ns, and transverse dimension of order 1 mm. The

472

Monte Carlo Simulations of Macho Parallaxes From a Satellite  

E-Print Network [OSTI]

Three ongoing microlensing experiments have found more candidate events than expected from the known stars. These experiments measure only one parameter of the massive compact halo objects (machos), the magnification time scale of the events. More information is required to understand the nature of the machos. A satellite experiment has been proposed to measure their projected transverse speed $\\tilde{v} = v/(1-z)$, where $v$ is the macho transverse speed and $z$ its distance divided by the distance of the source. Measurement of $\\tilde{v}$ would determine whether the machos were in the Galactic disk, Galactic halo, or in the Large Magellanic Cloud (LMC). We simulate events observed toward the LMC by the Earth and by a satellite in an Earth like heliocentric orbit. To leading order, such an experiment determines $\\tilde{v}$ up to a two fold degeneracy. More precise measurements break the degeneracy. We show that with photometric precisions of 3\\% to 4\\% and approximately 1 observation per day, $\\tilde{v}$ can be measured with a maximum error of 20\\% for 70\\% to 90\\% of events similar to the ones reported by the EROS and MACHO collaborations. The projected transverse velocity is known with the same maximum error for 60\\% to 75\\% of these events. This 20\\% maximum error is not a 1 $\\sigma$ error but is mostly due to degeneracy between two possible solutions, each one being localized to much better than 20\\%. These results are obtained with an Earth-satellite separation of 1 AU, and are improved by a larger separation.

Thomas Boutreux; Andrew Gould

1995-07-25T23:59:59.000Z

473

Near-infrared photometry of the Galilean satellites  

SciTech Connect (OSTI)

The present near-IR (2.2-, 3.8-, 4.8-micron) lightcurves and phase coefficients for the Galilean satellites notes the geometric albedo of Io to include volcanic emission at the two longer wavelengths, although no major outbursts were detected during the 1982-1983 period of these observations. The trend of decreasing albedo with increasing wavelength exhibited by Ganymede and Europa is consistent with their possession of icy surfaces. The results obtained for Callisto are consistent with visible-wavelength observations of other dark solar system objects. 35 references.

Tittemore, W.C.; Sinton, W.M.

1989-01-01T23:59:59.000Z

474

Production process for advanced space satellite system cables/interconnects.  

SciTech Connect (OSTI)

This production process was generated for the satellite system program cables/interconnects group, which in essences had no well defined production process. The driver for the development of a formalized process was based on the set backs, problem areas, challenges, and need improvements faced from within the program at Sandia National Laboratories. In addition, the formal production process was developed from the Master's program of Engineering Management for New Mexico Institute of Mining and Technology in Socorro New Mexico and submitted as a thesis to meet the institute's graduating requirements.

Mendoza, Luis A.

2007-12-01T23:59:59.000Z

475

How PEDOT:PSS solutions produce satellite-free inkjets  

E-Print Network [OSTI]

. Senthilarasu, P. Uthirakumar, S.C. Yoon, J. Lim, C. Lee, H.S. Lim, J. Lee, S.-H. Lee, Polymer solar cells based on inkjet-printed PEDOT:PSS layer, Organic Electronics 10 (2009) 536-542 [3] M.-W. Lee, M.-Y. Lee, J.C. Choi, J.-S. Park, C.-K. Song, Fine... and in the fabrication of conductive features can even cause bridging between neighbouring tracks, device failure and low production yield. Air, moisture and dust carried by satellite drops onto the substrate, film and/or main drop may also degrade the final film...

Hoath, S.D.; Jung, S.-J.; Hsiao, W.-K.; Hutchings, I.M.

2012-01-01T23:59:59.000Z

476

Satellite Remote Sensing of Mid-level Clouds  

E-Print Network [OSTI]

, the International Satellite Cloud Cli- matology Project (ISCCP, Rossow and Schi er 1999) and TIROS-N Observational Vertical Sounders Path-B (TOVS-B, Stubenrauch et al. 2006) are both long-term global climatologies that de ne mid-level clouds as having cloud top... devoted to establishing global cloud climatolo- gies, however, working de nitions or the classi cation of mid-level clouds vary with observational technique, region, and purpose (Poore et al. 1995; Hahn and Warren 1999; Rossow and Schi er 1999; Hahn...

Jin, Hongchun 1980-

2012-11-07T23:59:59.000Z

477

Change Detection Using 75Change Detection Using 75 Year Aerial Photo and Satellite Data Sets InexpensiveYear Aerial Photo and Satellite Data Sets InexpensiveChange Detection Using 75Change Detection Using 75--Year Aerial Photo and Satellite Data Sets, Ine  

E-Print Network [OSTI]

Change Detection Using 75Change Detection Using 75 Year Aerial Photo and Satellite Data Sets InexpensiveYear Aerial Photo and Satellite Data Sets InexpensiveChange Detection Using 75Change Detection Using 75--Year Aerial Photo and Satellite Data Sets, InexpensiveYear Aerial Photo and Satellite Data

478

Assessing net ecosystem carbon exchange of U S terrestrial ecosystems by integrating eddy covariance flux measurements and satellite observations  

SciTech Connect (OSTI)

More accurate projections of future carbon dioxide concentrations in the atmosphere and associated climate change depend on improved scientific understanding of the terrestrial carbon cycle. Despite the consensus that U.S. terrestrial ecosystems provide a carbon sink, the size, distribution, and interannual variability of this sink remain uncertain. Here we report a terrestrial carbon sink in the conterminous U.S. at 0.63 pg C yr 1 with the majority of the sink in regions dominated by evergreen and deciduous forests and savannas. This estimate is based on our continuous estimates of net ecosystem carbon exchange (NEE) with high spatial (1 km) and temporal (8-day) resolutions derived from NEE measurements from eddy covariance flux towers and wall-to-wall satellite observations from Moderate Resolution Imaging Spectroradiometer (MODIS). We find that the U.S. terrestrial ecosystems could offset a maximum of 40% of the fossil-fuel carbon emissions. Our results show that the U.S. terrestrial carbon sink varied between 0.51 and 0.70 pg C yr 1 over the period 2001 2006. The dominant sources of interannual variation of the carbon sink included extreme climate events and disturbances. Droughts in 2002 and 2006 reduced the U.S. carbon sink by 20% relative to a normal year. Disturbances including wildfires and hurricanes reduced carbon uptake or resulted in carbon release at regional scales. Our results provide an alternative, independent, and novel constraint to the U.S. terrestrial carbon sink.

Zhuang, Qianlai [Purdue University; Law, Beverly E. [Oregon State University; Baldocchi, Dennis [University of California, Berkeley; Ma, Siyan [University of California, Berkeley; Chen, Jiquan [University of Toledo, Toledo, OH; Richardson, Andrew [Harvard University; Melillo, Jerry [Marine Biological Laboratory; Davis, Ken J. [Pennsylvania State University; Hollinger, D. [USDA Forest Service; Wharton, Sonia [University of California, Davis; Falk, Matthias [University of California, Davis; Paw, U. Kyaw Tha [University of California, Davis; Oren, Ram [Duke University; Katulk, Gabriel G. [Duke University; Noormets, Asko [North Carolina State University; Fischer, Marc [Lawrence Berkeley National Laboratory (LBNL); Verma, Shashi [University of Nebraska; Suyker, A. E. [University of Nebraska, Lincoln; Cook, David R. [Argonne National Laboratory (ANL); Sun, G. [USDA Forest Service; McNulty, Steven G. [USDA Forest Service; Wofsy, Steve [Harvard University; Bolstad, Paul V [University of Minnesota; Burns, Sean [University of Colorado, Boulder; Monson, Russell K. [University of Colorado, Boulder; Curtis, Peter [Ohio State University, The, Columbus; Drake, Bert G. [Smithsonian Environmental Research Center, Edgewater, MD; Foster, David R. [Harvard University; Gu, Lianhong [ORNL; Hadley, Julian L. [Harvard University; Litvak, Marcy [University of New Mexico, Albuquerque; Martin, Timothy A. [University of Florida, Gainesville; Matamala, Roser [Argonne National Laboratory (ANL); Meyers, Tilden [NOAA, Oak Ridge, TN; Oechel, Walter C. [San Diego State University; Schmid, H. P. [Indiana University; Scott, Russell L. [USDA ARS; Torn, Margaret S. [Lawrence Berkeley National Laboratory (LBNL)

2011-01-01T23:59:59.000Z

479

February 20, 2008: Navy shoots down NASA satellite | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

0, 2008: Navy shoots down NASA satellite 0, 2008: Navy shoots down NASA satellite February 20, 2008: Navy shoots down NASA satellite February 20, 2008: Navy shoots down NASA satellite February 20, 2008 The Navy successfully shoots down with a missile an errant satellite 133 miles above the earth. DOE's National Nuclear Security Administration (NNSA) assists the Navy using its Red Storm supercomputer, located at its Sandia National Laboratories. For about two months, NNSA diverted Red Storm and its technical experts and codes to the secret project to simulate, assess, and plan the complex mission. All 26,569 processors were used on Red Storm to perform complex simulations that allowed NNSA's technical experts to predict various details and possibilities. The work helped answer many questions, such as at what altitude to hit the satellite, how

480

LANL Launches Four Tiny Satellites into Space - Los Alamos in SPACE |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LANL Launches Four Tiny Satellites into Space LANL Launches Four Tiny Satellites into Space "" Colleagues from LANL's Applied Electromagnetics and International, Space, and Response divisions led a rapid- response satellite development capability (Perseus program) and successfully put four tiny "cubeSats"-satellites small enough to hold in one hand-into orbit in December of 2010. The goal of the Perseus program is to develop a rapid-response satellite capability to enable many different mission types. The first phase of the effort focused on (1) demonstrating the ability to build and launch a useful satellite quickly and at low cost, (2) gaining cubeSat build and orbital experience, and (3) validating the LANL design methodology (namely, keeping the design simple, designing to the mission,

Note: This page contains sample records for the topic "km satellite modeled" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Enhancing Model Skill by Assimilating SMOPS Blended Soil Moisture Product into Noah Land Surface Model  

Science Journals Connector (OSTI)

Many studies that have assimilated remotely sensed soil moisture into land surface models have generally focused on retrievals from a single satellite sensor. However, few studies have evaluated the merits of assimilating ensemble product that are ...

Jifu Yin; Xiwu Zhan; Youfei Zheng; Jicheng Liu; Li Fang; Christopher R. Hain

482

Evaluating fusion techniques for multi-sensor satellite image data  

SciTech Connect (OSTI)

Satellite image data fusion is a topic of interest in many areas including environmental monitoring, emergency response, and defense. Typically any single satellite sensor cannot provide all of the benefits offered by a combination of different sensors (e.g., high-spatial but low spectral resolution vs. low-spatial but high spectral, optical vs. SAR). Given the respective strengths and weaknesses of the different types of image data, it is beneficial to fuse many types of image data to extract as much information as possible from the data. Our work focuses on the fusion of multi-sensor image data into a unified representation that incorporates the potential strengths of a sensor in order to minimize classification error. Of particular interest is the fusion of optical and synthetic aperture radar (SAR) images into a single, multispectral image of the best possible spatial resolution. We explore various methods to optimally fuse these images and evaluate the quality of the image fusion by using K-means clustering to categorize regions in the fused images and comparing the accuracies of the resulting categorization maps.

Martin, Benjamin W [ORNL] [ORNL; Vatsavai, Raju [ORNL] [ORNL

2013-01-01T23:59:59.000Z

483

Umatilla Satellite and Release Sites Project : Final Siting Report.  

SciTech Connect (OSTI)

This report presents the results of site analysis for the Umatilla Satellite and Release Sites Project. The purpose of this project is to provide engineering services for the siting and conceptual design of satellite and release facilities for the Umatilla Basin hatchery program. The Umatilla Basin hatchery program consists of artificial production facilities for salmon and steelhead to enhance production in the Umatilla River as defined in the Umatilla master plan approved in 1989 by the Northwest Power Planning Council. Facilities identified in the master plan include adult salmon broodstock holding and spawning facilities, facilities for recovery, acclimation, and/or extended rearing of salmon juveniles, and development of river sites for release of hatchery salmon and steelhead. The historic and current distribution of fall chinook, summer chinook, and coho salmon and steelhead trout was summarized for the Umatilla River basin. Current and future production and release objectives were reviewed. Twenty seven sites were evaluated for the potential and development of facilities. Engineering and environmental attributes of the sites were evaluated and compared to facility requirements for water and space. Site screening was conducted to identify the sites with the most potential for facility development. Alternative sites were selected for conceptual design of each facility type. A proposed program for adult holding facilities, final rearing/acclimation, and direct release facilities was developed.

Montgomery, James M.

1992-04-01T23:59:59.000Z

484

APPORT DES IMAGES-SATELLITE DANS LE SUIVI DES NUAGES DE POUSSIERES EN  

E-Print Network [OSTI]

the few Sahelian and Saharian weather monitoring stations confirmed exactness of the satellite imagery5 APPORT DES IMAGES-SATELLITE DANS LE SUIVI DES NUAGES DE POUSSIERES EN ZONES SAHARIENNE ET SUB - © Revue Télédétection, 2008, vol. 8, n° 1, p. 5-15 Résumé : Les images du satellite Météosat constituent

Paris-Sud XI, Université de

485

Satellite photography as a means of evaluating the equations of vertical motion  

E-Print Network [OSTI]

Vertical Motion . . ~ . ~ Problems Arising in the Determina- tion of Vertical Motions. Weather' Satellites II ANALYSIS PROCEDURE General Source of Data Satellite and Synoptic Weather Observations Computational Procedures Kinematic Method... of weather situations and cloud patterns was present. It should be noted that on these dates the satellite (TIROS) pictures were taken close to the synoptic observation time, thus simplifying the use of the pictures in the verification of results...

Hansen, John

2012-06-07T23:59:59.000Z

486

Sensitivity of satellite altimetry data assimilation on a Naval Anti-Submarine Warfare Weapon System .  

E-Print Network [OSTI]

??The purpose of this thesis is to assess the benefit of assimilating satellite altimeter data into the Modular Ocean Data Assimilation System (MODAS). To accomplish (more)

Mancini, Steven.

2004-01-01T23:59:59.000Z

487

E-Print Network 3.0 - alpha satellites flanking Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Australian National University Collection: Geosciences 13 Cell, Vol. 91, 10071019, December 26, 1997, Copyright 1997 by Cell Press Molecular Structure Summary: satellite arrays?...

488

Satellites Monitor the Weather from 22,300 Miles in Space  

Science Journals Connector (OSTI)

We rely on weather forecasts for everything from planting crops to deciding how to dress. With the help of weather satellites, such as GOES, meteorologists have improved their...

Viets, Patricia W

1997-01-01T23:59:59.000Z

489

E-Print Network 3.0 - applications technology satellite Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to play an ever-increasing role in the future of long... -range communications 21 . Satellite applications range from navigation, weather monitoring and terrain...

490

E-Print Network 3.0 - artificial satellites Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

precipitation estimates date back to the 1970s (Kidd 2001). Since... then, various satellite series have provided valuable weather information to the hydrometeorological...

491

ERS 14.1 Satellite Accumulation Ares (RCRA Compliance), 4/30/13  

Broader source: Energy.gov [DOE]

The objective of this surveillance is to evaluate the effectiveness of the contractor's management of hazardous and mixed wastes in satellite accumulation areas. The Facility Representative...

492

Data management of geostationary communication satellite telemetry and correlation to space weather observations .  

E-Print Network [OSTI]

??To understand and mitigate the effects of space weather on the performance of geostationary communications satellites, we analyze sixteen years of archived telemetry data from (more)

Lohmeyer, Whitney Quinne

2013-01-01T23:59:59.000Z

493

Winds derived from geostationary satellite moisture channel observations: Applications and impact on numerical weather prediction  

Science Journals Connector (OSTI)

Tropospheric motions deduced from sequential water vapor imagery provided by geostationary meteorological satellites can be utilized to infer wind fields. ... demonstrated through assimilation of these data into ...

C. S. Velden

1996-01-01T23:59:59.000Z

494

Uncertainty for Satellite and Station Solar Data in the Updated NSRDB  

SciTech Connect (OSTI)

Solar Resource Assessment Workshop, Denver CO, Oct 29, 2008 presentation: Uncertainty for Satellite and Station Solar Data in the Updated NSRDB,

Myers, D. R.

2008-10-29T23:59:59.000Z

495

E-Print Network 3.0 - aau-cubesat student satellite Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geosciences 31 SMILE Teacher Workshop 2007 Winter Teachers Workshop Summary: Typical Weather Balloon Coverage Satellite Wind Data Coverage Reading Wind Data Show students the...

496

E-Print Network 3.0 - ats satellites Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

precipitation estimates date back to the 1970s (Kidd 2001). Since... then, various satellite series have provided valuable weather information to the hydrometeorological...

497

E-Print Network 3.0 - advanced satellite based Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

processed... , and distributed the data from these satellites to provide life-saving weather forecasts, measure ocean Source: National Oceanic and Atmospheric Administration,...

498

E-Print Network 3.0 - activated muscle satellite Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

anemia or Summary: to endogenous muscle- derived satellite-stem-cells, this repair process was affected by a small number... in the skeletal muscle and progress along a...

499

Analysis of Doppler-effect on satellite constellations with wavelength division multiplexing architectures  

Science Journals Connector (OSTI)

With the development of optical space communications, a global space-based optical backbone network is currently proposed by using broadband laser inter-satellite links (ISLs) which...

Yang, Qinglong; Tan, Liying; Ma, Jing

2009-01-01T23:59:59.000Z

500

E-Print Network 3.0 - atmospheric corrected satellite Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Satellites already measure sea surface temperature, rainfall, sea level, surface wind, and ocean... , then study the return pulses to measure and correct for the effects...