Sample records for international satellite land-surface

  1. Effect of Land Surface Heterogeneity on Satellite Near-

    E-Print Network [OSTI]

    Walker, Jeff

    in regulating the energy and water balance at the soil surface and it is therefore a crucial variable for many. SMOS will carry an L-band (1.4GHz) microwave radiometer and will provide near-surface soil moisture highly heterogeneous land surface conditions. The principal objectives of this research are to (i) test

  2. Nocturnal effects in the retrieval of land surface temperatures from satellite measurements

    SciTech Connect (OSTI)

    Platt, C.M.R.; Prata, A.J. (CSIRO, Mordialloc, Victoria (Australia). Div. of Atmospheric Research)

    1993-08-01T23:59:59.000Z

    The determination of accurate land surface temperatures from infrared satellite measurements is difficult because of variations in atmospheric water vapor and in land surface emissivity. Here the authors show that under certain conditions (viz. when the atmosphere near the surface is warmer than the surface), there is a cancellation between absorbed and emitted radiation. This often occurs during clear nights when intense nocturnal cooling of the surface causes inversions in the temperature and water vapor profiles. They demonstrate that a reasonable estimate of the land surface temperature can be made from a single channel infrared measurement in these conditions.

  3. Use of land surface remotely sensed satellite and airborne data for environmental exposure assessment in cancer research

    E-Print Network [OSTI]

    cancer and environmental contaminants, focusing primarily on agricultural chemical exposure assessmentUse of land surface remotely sensed satellite and airborne data for environmental exposure assessment in cancer research SUSAN K. MAXWELLa , JAYMIE R. MELIKERb AND PIERRE GOOVAERTSc a U.S. Geological

  4. Diurnal cycle of land surface temperature in a desert encroachment zone as observed from satellites

    E-Print Network [OSTI]

    Sun, Donglian

    Very High Resolution Radiometer (AVHRR) that are limited in their ability to capture the full diurnal) project and the Department of Energy's Atmospheric Radiation Measurement (ARM) program, the ARM Mobile of the surface from satellites are possible. Infrared radiometers on polar orbiting satellites have been used

  5. Land surface skin temperatures from a combined analysis of microwave and infrared satellite observations for an all-weather

    E-Print Network [OSTI]

    are homogeneous over large scales, with nearly constant albe- dos, high heat capacity, and infinite moisture supply. In contrast, land surfaces are highly variable in space, have lower heat capacity and limited vapor, cloud liquid water, and surface emissivities over land from a combined analysis of Special Sensor

  6. The international status of intelligence-collecting reconnaissance satellites

    E-Print Network [OSTI]

    Gates, Brent Allen

    1972-01-01T23:59:59.000Z

    THE INTERNATIONAL STATUS OF INTELLIGENCE- COLLECTING RECONNAISSANCE SATELLITES A Thesis by BRENT ALLEN GATES Submitted to the Graduate College of Texas ASH University in partial fulfillment of the requirement for the degree of i~STER OF ARTS...) (Member) (Member) May 1972 ABSTRACT The International Status of Intelligence-Collecting Reconnaissance Satellites. (Nay 1972) Brent Allen Gates, B. A. , University of Naryland. Directed by: Dr. Paul Van Riper Reconnaissance satellites are examined...

  7. Scales of temporal and spatial variability of midlatitude land surface temperature

    E-Print Network [OSTI]

    Vinnikov, Konstantin

    ] Meteorologists have used land surface temperature (LST) in the energy balance equations for a long time high spatial resolution infrared satellite observation of LST is possible only during clearsky weather conditions. Micro- wave radiometers that can monitor LST in cloudy conditions are not yet able to provide

  8. Evaluation of "all weather" microwave-derived land surface temperatures with in situ CEOP measurements

    E-Print Network [OSTI]

    Evaluation of "all weather" microwave-derived land surface temperatures with in situ CEOP conditions. Ts estimates from infrared satellite observations can only be derived under clear sky. Passive from Special Sensor Microwave/Imager measurements, with a spatial resolution of 0.25° × 0.25°, at least

  9. Relative efficiency of land surface energy balance components

    E-Print Network [OSTI]

    Bateni, S. M.

    [1] The partitioning of available energy into dissipative fluxes over land surfaces is dependent on the state variable of the surface energy balance (land surface temperature) and the state variable of the surface water ...

  10. Probability distributions of land surface wind speeds over North America

    E-Print Network [OSTI]

    Dai, Aiguo

    . Jones, A. Dai, S. Biner, D. Caya, and K. Winger (2010), Probability distributions of land surface wind distribution used for estimation of wind climate and annual winProbability distributions of land surface wind speeds over North America Yanping He,1 Adam Hugh

  11. Modeling the interaction between land surface and groundwater

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    % of GW for irrigation. Groundwater was managed separately. GW systems and land surface intimately and human factors on GW systems. GW irrigation capacity and efficiency based on a watershed scale. How much-ground water models Irrigation efficiency Materials and methods Development of SGWM #12;Background Groundwater

  12. Asymptotic behavior of an elastic satellite with internal friction

    E-Print Network [OSTI]

    Emanuele Haus; Dario Bambusi

    2012-12-04T23:59:59.000Z

    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.

  13. SGP Cloud and Land Surface Interaction Campaign (CLASIC): Measurement Platforms

    SciTech Connect (OSTI)

    MA Miller; R Avissar; LK Berg; SA Edgerton; ML Fischer; TJ Jackson; B. Kustas; PJ Lamb; G McFarquhar; Q Min; B Schmid; MS Torn; DD Tuner

    2007-06-01T23:59:59.000Z

    The Cloud and Land Surface Interaction Campaign (CLASIC) will be conducted from June 8 to June 30, 2007, at the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) Southern Great Plains (SGP) site. Data will be collected using eight aircraft equipped with a variety of specialized sensors, four specially instrumented surface sites, and two prototype surface radar systems. The architecture of CLASIC includes a high-altitude surveillance aircraft and enhanced vertical thermodynamic and wind profile measurements that will characterize the synoptic scale structure of the clouds and the land surface within the ACRF SGP site. Mesoscale and microscale structures will be sampled with a variety of aircraft, surface, and radar observations. An overview of the measurement platforms that will be used during the CLASIC are described in this report. The coordination of measurements, especially as it relates to aircraft flight plans, will be discussed in the CLASIC Implementation Plan.

  14. Improving land-surface model hydrology: Is an explicit aquifer model better than a deeper soil profile?

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    land-surface model hydrology: Is an explicit aquifer modelAL. : LAND-SURFACE MODEL HYDROLOGY Changnon, S. , et al. (land-surface model hydrology: Is an explicit aquifer model

  15. Correcting the orbit drift effect on AVHRR land surface skin temperature measurements

    E-Print Network [OSTI]

    Jin, Menglin

    results in a significant cooling effect on their afternoon path Advanced Very High Resolution Radiometer, and are combined with satellite observations to remove the cooling effect. Applying this methodology to eighteen of these satellites' lifetime (Price 1991, Hurrell and International Journal of Remote Sensing ISSN 0143-1161 print

  16. Land surface cleanup of plutonium at the Nevada Test Site

    SciTech Connect (OSTI)

    Ebeling, L.L.; Evans, R.B.; Walsh, E.J.

    1991-01-01T23:59:59.000Z

    The Nevada Test Site (NTS) covers approximately 3300 km{sup 2} of high desert and is located approximately 100 km northwest of Las Vegas, Nevada. Soil contaminated by plutonium exists on the NTS and surrounding areas from safety tests conducted in the 1950s and 1960s. About 150 curies of contamination have been measured over 1200 hectares of land surface. Most contamination is found in the top 5 cm of soil but may be found deep as 25 cm. The cost of conventional removal and disposal of the full soil volume has been estimated at over $500,000,000. This study is directed toward minimizing the volume of waste which must be further processed and disposed of by precisely controlling soil removal depth. The following soil removal machines were demonstrated at the NTS: (1) a CMI Corporation Model PR-500FL pavement profiler, (2) a CMI Corporation Model Tr-225B trimmer reclaimer, (3) a Caterpillar Model 623 elevating scraper equipped with laser depth control, (4) a Caterpillar Model 14G motor grader equipped with laser depth control, (5) a Caterpillar Model 637 auger scraper, and (6) a XCR Series Guzzler vacuum truck. 5 refs., 5 figs.

  17. Estimation of turbulent surface heat fluxes using sequences of remotely sensed land surface temperature

    E-Print Network [OSTI]

    Bateni, Sayed Mohyeddin

    2011-01-01T23:59:59.000Z

    Fluxes of heat and moisture at the land-surface play a significant role in the climate system. These fluxes interact with the overlying atmosphere and influence the characteristics of the planetary boundary layer (e.g. ...

  18. amip ii land-surface: Topics by E-print Network

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

    Standards Process Breakout Session June 15, 2005 Robert Wolfe NASA GSFC Code 614.5 & Raytheon ITSS 12;June 15, 2005 - Wolfe - San Diego 2 MODIS Land Surface Reflectance products:...

  19. Impact of Agricultural Practice on Regional Climate in a Coupled Land Surface Mesoscale Model

    E-Print Network [OSTI]

    Cooley, H.S.; Riley, W.J.; Torn, M.S.; He, Y.

    2004-01-01T23:59:59.000Z

    winter wheat belt on the mesoscale environment, Monthlygeneration Penn State/NCAR mesoscale model (MM5), NCAR,in a Coupled Land Surface Mesoscale Model H.S. Cooley Energy

  20. Coupling the high-complexity land surface model ACASA to the mesoscale model WRF

    E-Print Network [OSTI]

    Pyles, R. D.

    In this study, the Weather Research and Forecasting (WRF) model is coupled with the Advanced Canopy–Atmosphere–Soil Algorithm (ACASA), a high-complexity land surface model. Although WRF is a state-of-the-art regional ...

  1. Coupling the High Complexity Land Surface Model ACASA to the Mesoscale Model WRF

    E-Print Network [OSTI]

    Xu, L.

    In this study, the Weather Research and Forecasting Model (WRF) is coupled with the Advanced Canopy-Atmosphere-Soil Algorithm (ACASA), a high complexity land surface model. Although WRF is a state-of-the-art regional ...

  2. Multi-sensor large scale land surface data assimilation using ensemble approaches

    E-Print Network [OSTI]

    Zhou, Yuhua, Ph. D. Massachusetts Institute of Technology

    2006-01-01T23:59:59.000Z

    One of the ensemble Kalman filter's (EnKF) attractive features in land surface applications is its ability to provide distributional information. The EnKF relies on normality approximations that improve its efficiency but ...

  3. Evaluation of Satellite Estimates of Land Surface Temperature from GOES over the United States

    E-Print Network [OSTI]

    Sun, Donglian

    , and it is an indicator of the energy balance at the earth's surface (Sellers et al. 1988). LST retrievals are more for several decades. The focus was on polar-orbiting systems, such as the Advanced Very High Resolution Radiometer (AVHRR) and the Moderate Resolution Imaging Spectroradiometer (MODIS), because of global coverage

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

    E-Print Network [OSTI]

    Small, Eric

    Resolution Imaging Spectroradiometer (MODIS) and EOS Advanced Microwave Scanning Radiometer (AMSR and through model initialization of soil moisture from High Resolution Land Data Assimilation System (HRLDAS moisture and sensible heat fluxes. For example, the variations of surface energy and moisture fluxes

  5. Land surface temperature estimation over the Northern Great Plains using passive microwave data from Nimbus 7

    E-Print Network [OSTI]

    Lambert, Vicki Michelle

    1987-01-01T23:59:59.000Z

    'ounds at the 95% Conffdence Level for Area! Case Study Grid Cells 65 74 LIST OF FIGURES Figure The electromagnetic spectrum Measured transmittance in the band 5. 0-25. 0 pm Detection of passive microwave energy by a passive microwave sensor . Page 15... brightness temperature versus land surface temperature for each of the four SMMR channels at row 08 column 22 Comparison of passive microwave brightness temperature versus land surface temperature for API & 5 mm and API & 5 mm for the 0. 818 channel...

  6. Diurnal and seasonal variations of wind farm impacts on land surface temperature over western Texas

    E-Print Network [OSTI]

    Zhou, Liming

    Diurnal and seasonal variations of wind farm impacts on land surface temperature over western Texas for the period of 2003­2011 over a region in West-Central Texas, where four of the world's largest wind farms by comparing the LST changes between wind farm pixels (WFPs) and nearby non wind farm pixels (NNWFPs) using

  7. VIIRS narrowband to broadband land surface albedo conversion: formula and validation

    E-Print Network [OSTI]

    Liang, Shunlin

    albedo, such as the Advanced Very High Resolution Radiometer (AVHRR), Moderate Resolution Imaging broadband albedo (0.4­4.0 mm) of land surfaces from Visible/Infrared Imager/Radiometer Suite (VIIRS algorithm. 1. Introduction Albedo is a critical variable for accurate climate and surface energy balance

  8. Analysis of badlands: coupling of tectonic and land surface processes in the Pyrenees of Spain

    E-Print Network [OSTI]

    Baer, Christian

    Analysis of badlands: coupling of tectonic and land surface processes in the Pyrenees of Spain MSc to rainstorms. In north-east Spain, sediment from rapidly eroding badlands has significantly reduced reservoir-funded research consortium (SESAM II) with partners at the University of Lleida, Spain

  9. Developing a TeraGrid Based Land Surface Hydrology and Weather Modeling Interface

    E-Print Network [OSTI]

    Jiang, Wen

    Developing a TeraGrid Based Land Surface Hydrology and Weather Modeling Interface Hsin-I Chang1 iclimate@purdue.edu -------------------- -------------------- 1 INTRODUCTION Real world hydrologic cyberinfrastructure (CI) has been articulated in many workshops and meetings of the environmental and hydrologic

  10. Climate Policy 3 (2003) 149157 The climatic impacts of land surface change and carbon

    E-Print Network [OSTI]

    Pielke, Roger A.

    recognize that carbon sequestration in the terrestrial biosphere can reduce the build-up of carbon dioxide of the surface energy budget can affect the local, regional, and global climate. Given the goal of mitigatingClimate Policy 3 (2003) 149­157 The climatic impacts of land surface change and carbon management

  11. Stable water isotope simulation by current land-surface schemes:Results of IPILPS phase 1

    SciTech Connect (OSTI)

    Henderson-Sellers, A.; Fischer, M.; Aleinov, I.; McGuffie, K.; Riley, W.J.; Schmidt, G.A.; Sturm, K.; Yoshimura, K.; Irannejad, P.

    2005-10-31T23:59:59.000Z

    Phase 1 of isotopes in the Project for Intercomparison of Land-surface Parameterization Schemes (iPILPS) compares the simulation of two stable water isotopologues ({sup 1}H{sub 2} {sup 18}O and {sup 1}H{sup 2}H{sup 16}O) at the land-atmosphere interface. The simulations are off-line, with forcing from an isotopically enabled regional model for three locations selected to offer contrasting climates and ecotypes: an evergreen tropical forest, a sclerophyll eucalypt forest and a mixed deciduous wood. Here we report on the experimental framework, the quality control undertaken on the simulation results and the method of intercomparisons employed. The small number of available isotopically-enabled land-surface schemes (ILSSs) limits the drawing of strong conclusions but, despite this, there is shown to be benefit in undertaking this type of isotopic intercomparison. Although validation of isotopic simulations at the land surface must await more, and much more complete, observational campaigns, we find that the empirically-based Craig-Gordon parameterization (of isotopic fractionation during evaporation) gives adequately realistic isotopic simulations when incorporated in a wide range of land-surface codes. By introducing two new tools for understanding isotopic variability from the land surface, the Isotope Transfer Function and the iPILPS plot, we show that different hydrological parameterizations cause very different isotopic responses. We show that ILSS-simulated isotopic equilibrium is independent of the total water and energy budget (with respect to both equilibration time and state), but interestingly the partitioning of available energy and water is a function of the models' complexity.

  12. Development of High Resolution Land Surface Parameters for the Community Land Model

    SciTech Connect (OSTI)

    Ke, Yinghai; Leung, Lai-Yung R.; Huang, Maoyi; Coleman, Andre M.; Li, Hongyi; Wigmosta, Mark S.

    2012-11-06T23:59:59.000Z

    There is a growing need for high-resolution land surface parameters as land surface models are being applied at increasingly higher spatial resolution offline as well as in regional and global models. The default land surface parameters for the most recent version of the Community Land Model (i.e. CLM 4.0) are at 0.5° or coarser resolutions, released with the Community Earth System Model (CESM). Plant Functional Types (PFTs), vegetation properties such as Leaf Area Index (LAI), Stem Area Index (SAI), and non-vegetated land covers were developed using remotely sensed datasets retrieved in late 1990’s and the beginning of this century. In this study, we developed new land surface parameters for CLM 4.0, specifically PFTs, LAI, SAI and non-vegetated land cover composition, at 0.05° resolution globally based on the most recent MODIS land cover and improved MODIS LAI products. Compared to the current CLM 4.0 parameters, the new parameters produced a decreased coverage by bare soil and trees, but an increased coverage by shrub, grass, and cropland. The new parameters result in a decrease in global seasonal LAI, with the biggest decrease in boreal forests; however, the new parameters also show a large increase in LAI in tropical forest. Differences between the new and the current parameters are mainly caused by changes in the sources of remotely sensed data and the representation of land cover in the source data. Advantages and disadvantages of each dataset were discussed in order to provide guidance on the use of the data. The new high-resolution land surface parameters have been used in a coupled land-atmosphere model (WRF-CLM) applied to the western U.S. to demonstrate their use in high-resolution modeling. A remapping method from the latitude/longitude grid of the CLM data to the WRF grids with map projection was also demonstrated. Future work will include global offline CLM simulations to examine the impacts of source data resolution and subsequent land parameter changes on simulated land surface processes.

  13. The role of land surface processes on the mesoscale simulation of the July 26, 2005 heavy rain event over Mumbai, India

    E-Print Network [OSTI]

    Niyogi, Dev

    The role of land surface processes on the mesoscale simulation of the July 26, 2005 heavy rain Mesoscale convection Weather research and forecast model Indian summer monsoon Land surface processes

  14. Impact of Agricultural Practice on Regional Climate in a CoupledLand Surface Mesoscale Model

    SciTech Connect (OSTI)

    Cooley, H.S.; Riley, W.J.; Torn, M.S.; He, Y.

    2004-07-01T23:59:59.000Z

    The land surface has been shown to form strong feedbacks with climate due to linkages between atmospheric conditions and terrestrial ecosystem exchanges of energy, momentum, water, and trace gases. Although often ignored in modeling studies, land management itself may form significant feedbacks. Because crops are harvested earlier under drier conditions, regional air temperature, precipitation, and soil moisture, for example, affect harvest timing, particularly of rain-fed crops. This removal of vegetation alters the land surface characteristics and may, in turn, affect regional climate. We applied a coupled climate(MM5) and land-surface (LSM1) model to examine the effects of early and late winter wheat harvest on regional climate in the Department of Energy Atmospheric Radiation Measurement (ARM) Climate Research Facility in the Southern Great Plains, where winter wheat accounts for 20 percent of the land area. Within the winter wheat region, simulated 2 m air temperature was 1.3 C warmer in the Early Harvest scenario at mid-day averaged over the two weeks following harvest. Soils in the harvested area were drier and warmer in the top 10 cm and wetter in the 10-20 cm layer. Midday soils were 2.5 C warmer in the harvested area at mid-day averaged over the two weeks following harvest. Harvest also dramatically altered latent and sensible heat fluxes. Although differences between scenarios diminished once both scenarios were harvested, the short-term impacts of land management on climate were comparable to those from land cover change demonstrated in other studies.

  15. A Subbasin-based framework to represent land surface processes in an Earth System Model

    SciTech Connect (OSTI)

    Tesfa, Teklu K.; Li, Hongyi; Leung, Lai-Yung R.; Huang, Maoyi; Ke, Yinghai; Sun, Yu; Liu, Ying

    2014-05-20T23:59:59.000Z

    Realistically representing spatial heterogeneity and lateral land surface processes within and between modeling units in earth system models is important because of their implications to surface energy and water exchange. The traditional approach of using regular grids as computational units in land surface models and earth system models may lead to inadequate representation of lateral movements of water, energy and carbon fluxes, especially when the grid resolution increases. Here a new subbasin-based framework is introduced in the Community Land Model (CLM), which is the land component of the Community Earth System Model (CESM). Local processes are represented assuming each subbasin as a grid cell on a pseudo grid matrix with no significant modifications to the existing CLM modeling structure. Lateral routing of water within and between subbasins is simulated with the subbasin version of a recently-developed physically based routing model, Model for Scale Adaptive River Routing (MOSART). As an illustration, this new framework is implemented in the topographically diverse region of the U.S. Pacific Northwest. The modeling units (subbasins) are delineated from high-resolution Digital Elevation Model while atmospheric forcing and surface parameters are remapped from the corresponding high resolution datasets. The impacts of this representation on simulating hydrologic processes are explored by comparing it with the default (grid-based) CLM representation. In addition, the effects of DEM resolution on parameterizing topography and the subsequent effects on runoff processes are investigated. Limited model evaluation and comparison showed that small difference between the averaged forcing can lead to more significant difference in the simulated runoff and streamflow because of nonlinear horizontal processes. Topographic indices derived from high resolution DEM may not improve the overall water balance, but affect the partitioning between surface and subsurface runoff. More systematic analyses are needed to determine the relative merits of the subbasin representation compared to the commonly used grid-based representation, especially when land surface models are approaching higher resolutions.

  16. Toward A National Early Warning System for Forest Disturbances Using Remotely Sensed Land Surface Phenology

    SciTech Connect (OSTI)

    HargroveJr., William Walter [USDA Forest Service; Spruce, Joe [NASA Stennis Space Center; Gasser, Gerry [NASA Stennis Space Center; Hoffman, Forrest M [ORNL

    2009-12-01T23:59:59.000Z

    We are using a statistical clustering method for delineating homogeneous ecoregions as a basis for identifying disturbances in forests through time over large areas, up to national and global extents. Such changes can be shown relative to past conditions, or can be predicted relative to present conditions, as with forecasts of future climatic change. This quantitative ecoregion approach can be used to predict destinations for populations whose local environments are forecast to become unsuitable and are forced to migrate as their habitat shifts, and is also useful for predicting the susceptibility of new locations to invasive species like Sudden Oak Death. EFETAC and our sister western center WWETAC, along with our NASA and ORNL collaborators, are designing a new national-scale early warning system for forest threats, called FIRST. Envisioned as a change-detection system, FIRST will identify all land surface cover changes at the MODIS observational scale, and then try to discriminate normal, expected seasonal changes from locations having unusual activity that may represent potential forest threats. As a start, we have developed new national data sets every 16 days from 2002 through 2008, based on land surface phenology, or timing of leaf-out in the spring and brown-down in the fall. Changes in such phenological maps will be shown to contain important information about vegetation health status across the United States. The standard deviation of the duration of fall can be mapped, showing places where length of fall is relatively constant or is variable in length from year to year.

  17. Sensitivity of global tropical climate to land surface processes: Mean state and interannual variability

    SciTech Connect (OSTI)

    Ma, Hsi-Yen; Xiao, Heng; Mechoso, C. R.; Xue, Yongkang

    2013-03-01T23:59:59.000Z

    This study examines the sensitivity of global tropical climate to land surface processes (LSP) using an atmospheric general circulation model both uncoupled (with prescribed SSTs) and coupled to an oceanic general circulation model. The emphasis is on the interactive soil moisture and vegetation biophysical processes, which have first order influence on the surface energy and water budgets. The sensitivity to those processes is represented by the differences between model simulations, in which two land surface schemes are considered: 1) a simple land scheme that specifies surface albedo and soil moisture availability, and 2) the Simplified Simple Biosphere Model (SSiB), which allows for consideration of interactive soil moisture and vegetation biophysical process. Observational datasets are also employed to assess the reality of model-revealed sensitivity. The mean state sensitivity to different LSP is stronger in the coupled mode, especially in the tropical Pacific. Furthermore, seasonal cycle of SSTs in the equatorial Pacific, as well as ENSO frequency, amplitude, and locking to the seasonal cycle of SSTs are significantly modified and more realistic with SSiB. This outstanding sensitivity of the atmosphere-ocean system develops through changes in the intensity of equatorial Pacific trades modified by convection over land. Our results further demonstrate that the direct impact of land-atmosphere interactions on the tropical climate is modified by feedbacks associated with perturbed oceanic conditions ("indirect effect" of LSP). The magnitude of such indirect effect is strong enough to suggest that comprehensive studies on the importance of LSP on the global climate have to be made in a system that allows for atmosphere-ocean interactions.

  18. Water balance in the Amazon basin from a land surface model ensemble

    SciTech Connect (OSTI)

    Getirana, Augusto; Dutra, Emanuel; Guimberteau, Matthieu; Kam, Jonghun; Li, Hongyi; Decharme, Bertrand; Zhang, Zhengqiu J.; Ducharne, Agnes; Boone, Aaron; Balsamo, Gianpaolo; Rodell, Matthew; Mounirou Toure, Ally; Xue, Yongkang; Peters-Lidard, Christa D.; Kumar, Sujay V.; Arsenault, Kristi Rae; Drapeau, Guillaume; Leung, Lai-Yung R.; Ronchail, Josyane; Sheffield, Justin

    2014-12-06T23:59:59.000Z

    Despite recent advances in modeling and remote sensing of land surfaces, estimates of the global water budget are still fairly uncertain. The objective of this study is to evaluate the water budget of the Amazon basin based on several state-of-the-art land surface model (LSM) outputs. Water budget variables [total water storage (TWS), evapotranspiration (ET), surface runoff (R) and baseflow (B)] are evaluated at the basin scale using both remote sensing and in situ data. Fourteen LSMs were run using meteorological forcings at a 3-hourly time step and 1-degree spatial resolution. Three experiments are performed using precipitation which has been rescaled to match monthly global GPCP and GPCC datasets and the daily HYBAM dataset for the Amazon basin. R and B are used to force the Hydrological Modeling and Analysis Platform (HyMAP) river routing scheme and simulated discharges are compared against observations at 165 gauges. Simulated ET and TWS are compared against FLUXNET and MOD16A2 evapotranspiration, and GRACE TWS estimates in different catchments. At the basin scale, simulated ET ranges from 2.39mm.d-1 to 3.26mm.d-1 and a low spatial correlation between ET and P indicates that evapotranspiration does not depend on water availability over most of the basin. Results also show that other simulated water budget variables vary significantly as a function of both the LSM and precipitation used, but simulated TWS generally agree at the basin scale. The best water budget simulations resulted from experiments using the HYBAM dataset, mostly explained by a denser rainfall gauge network the daily rescaling.

  19. Relationship between satellite-derived vegetation indices and aircraft-based CO2 measurements

    SciTech Connect (OSTI)

    Cihlar, J.; Caramori, P.H.; Schuepp, P.H.; Desjardins, R.L.; Macpherson, J.I. (Canada Centre for Remote Sensing, Ottawa (Canada) McGill Univ., Montreal (Canada) Agriculture Canada, Centre for Land and Biological Resources Research, Ottawa (Canada) National Research Council of Canada, Inst. for Aerospace Research, Ottawa (Canada))

    1992-11-01T23:59:59.000Z

    The objective of this study was to analyze the relationship between satellite-derived vegetation indices and CO2 uptake, as an initial step in exploring the possibility of using a satellite-derived vegetation index as a measure of net photosynthesis. The study area included the First International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE) site located on the Konza prairie and adjacent area as well as a transect between Manhattan and Salina. One third of the transect exhibited vegetation and terrain characteristics similar to those on the FIFE site, whereas cultivated land predominated in the remaining portion of the 75-km-long flight line. In June, July, August, and October 1987, several CO2 data sets were obtained using the National Research Council of Canada's Twin Otter research aircraft. The normalized difference vegetation index (NDVI) and the simple ratio (SR) were computed from NOAA AVHRR data acquired as part of FIFE. Aircraft and satellite data were processed to obtain spatially coincident and locally representative flux values. Results show a linear relationship between NDVI and CO2 uptake during a single day; however, a nonlinear relationship emerged when all data sets were combined. The data from FIFE and the regional transect were consistent for one date but differed for other periods. Overall, about 60 percent of total variability in CO2 flux was accounted for by the NDVI and 74 percent by the SR. 14 refs.

  20. Urban and land surface effects on the 30 July 2003 mesoscale convective system event observed in the southern Great Plains

    E-Print Network [OSTI]

    Niyogi, Dev

    Urban and land surface effects on the 30 July 2003 mesoscale convective system event observed/Atmosphere Mesoscale Prediction System (COAMPS 1 ) to investigate the impact of urban and land vegetation processes on the prediction of the mesoscale convective system (MCS) observed on 30 July 2003 in the vicinity of Oklahoma City

  1. Modeling the Summertime Climate of Southwest Asia: The Role of Land Surface Processes in Shaping the Climate of Semiarid Regions

    E-Print Network [OSTI]

    Marcella, Marc P.

    Presented is a study on the role of land surface processes in determining the summertime climate over the semiarid region of southwest Asia. In this region, a warm surface air temperature bias of 3.5°C is simulated in the ...

  2. RAMI4PILPS: An intercomparison of formulations for the partitioning of solar radiation in land surface models

    E-Print Network [OSTI]

    Ni-Meister, Wenge

    RAMI4PILPS: An intercomparison of formulations for the partitioning of solar radiation in land for the partitioning of solar radiation in land surface models, J. Geophys. Res., 116, G02019, doi:10.1029/2010JG001511 [e.g., Zeng et al., 2000; Dai et al., 2004]. The partitioning of solar radiation between

  3. Scalability of grid- and subbasin-based land surface modeling approaches for hydrologic simulations

    SciTech Connect (OSTI)

    Tesfa, Teklu K.; Leung, Lai-Yung R.; Huang, Maoyi; Li, Hongyi; Voisin, Nathalie; Wigmosta, Mark S.

    2014-03-27T23:59:59.000Z

    This paper investigates the relative merits of grid- and subbasin-based land surface modeling approaches for hydrologic simulations, with a focus on their scalability (i.e., abilities to perform consistently across a range of spatial resolutions) in simulating runoff generation. Simulations produced by the grid- and subbasin-based configurations of the Community Land Model (CLM) are compared at four spatial resolutions (0.125o, 0.25o, 0.5o and 1o) over the topographically diverse region of the U.S. Pacific Northwest. Using the 0.125o resolution simulation as the “reference”, statistical skill metrics are calculated and compared across simulations at 0.25o, 0.5o and 1o spatial resolutions of each modeling approach at basin and topographic region levels. Results suggest significant scalability advantage for the subbasin-based approach compared to the grid-based approach for runoff generation. Basin level annual average relative errors of surface runoff at 0.25o, 0.5o, and 1o compared to 0.125o are 3%, 4%, and 6% for the subbasin-based configuration and 4%, 7%, and 11% for the grid-based configuration, respectively. The scalability advantages of the subbasin-based approach are more pronounced during winter/spring and over mountainous regions. The source of runoff scalability is found to be related to the scalability of major meteorological and land surface parameters of runoff generation. More specifically, the subbasin-based approach is more consistent across spatial scales than the grid-based approach in snowfall/rainfall partitioning, which is related to air temperature and surface elevation. Scalability of a topographic parameter used in the runoff parameterization also contributes to improved scalability of the rain driven saturated surface runoff component, particularly during winter. Hence this study demonstrates the importance of spatial structure for multi-scale modeling of hydrological processes, with implications to surface heat fluxes in coupled land-atmosphere modeling.

  4. Q&A on "Impacts of Wind Farms on Land Surface Temperature" Published by Nature Climate Change on April 29, 2012

    E-Print Network [OSTI]

    Zhou, Liming

    1 Q&A on "Impacts of Wind Farms on Land Surface Temperature" Published by Nature Climate Change? This study presents the first observational evidence of wind farm impacts on land surface temperature downwind of wind farms. Why do the operating wind turbines warm nighttime temperature? This warming effect

  5. A Physically Based Runoff Routing Model for Land Surface and Earth System Models

    SciTech Connect (OSTI)

    Li, Hongyi; Wigmosta, Mark S.; Wu, Huan; Huang, Maoyi; Ke, Yinghai; Coleman, Andre M.; Leung, Lai-Yung R.

    2013-06-13T23:59:59.000Z

    A new physically based runoff routing model, called the Model for Scale Adaptive River Transport (MOSART), has been developed to be applicable across local, regional, and global scales. Within each spatial unit, surface runoff is first routed across hillslopes and then discharged along with subsurface runoff into a ‘‘tributary subnetwork’’ before entering the main channel. The spatial units are thus linked via routing through the main channel network, which is constructed in a scale-consistent way across different spatial resolutions. All model parameters are physically based, and only a small subset requires calibration.MOSART has been applied to the Columbia River basin at 1/ 168, 1/ 88, 1/ 48, and 1/ 28 spatial resolutions and was evaluated using naturalized or observed streamflow at a number of gauge stations. MOSART is compared to two other routing models widely used with land surface models, the River Transport Model (RTM) in the Community Land Model (CLM) and the Lohmann routing model, included as a postprocessor in the Variable Infiltration Capacity (VIC) model package, yielding consistent performance at multiple resolutions. MOSART is further evaluated using the channel velocities derived from field measurements or a hydraulic model at various locations and is shown to be capable of producing the seasonal variation and magnitude of channel velocities reasonably well at different resolutions. Moreover, the impacts of spatial resolution on model simulations are systematically examined at local and regional scales. Finally, the limitations ofMOSART and future directions for improvements are discussed.

  6. Albedo estimates for land surface models and support for a new paradigm based on foliage nitrogen concentration

    SciTech Connect (OSTI)

    Hollinger, D. [USDA Forest Service; Ollinger, S. V. [University of Hew Hampshire; Richardson, A. D. [University of Hew Hampshire; Martin, M. E. [University of New Hampshire; Meyers, T. P. [NOAA ATDD; Dail, D. B. [University of Maine; Scott, N. A. [Queens University, Kingston, ON, Canada; Arkebauer, T. J. [University of Nebraska, Lincoln; Baldocchi, D. D. [University of California, Berkeley; Clark, K. L. [USDA Forest Service; Curtis, Peter [Ohio State University, The, Columbus; Davis, K. J. [Pennsylvania State University; Desai, Desai Ankur R. [University of Wisconsin, Madison; Dragoni, Danilo [Indiana University; Goulden, M. L. [University of California, Irvine; Gu, Lianhong [ORNL; Katul, G. G. [Duke University; Pallardy, Stephen G. [University of Missouri; Pawu, K. T. [University of California, Davis; Schmid, H. P. [IFU, FZK IMK, Institute of Meteorology & Climate, Garmisch Partenkirchen, Germany; Stoy, P. C. [University of Edinburgh; Suyker, A. E. [University of Nebraska, Lincoln; Verma, Shashi [University of Nebraska

    2009-02-01T23:59:59.000Z

    Vegetation albedo is a critical component of the Earth s climate system, yet efforts to evaluate and improve albedo parameterizations in climate models have lagged relative to other aspects of model development. Here, we calculated growing season albedos for deciduous and evergreen forests, crops, and grasslands based on over 40 site-years of data from the AmeriFlux network and compared them with estimates presently used in the land surface formulations of a variety of climate models. Generally, the albedo estimates used in land surface models agreed well with this data compilation. However, a variety of models using fixed seasonal estimates of albedo overestimated the growing season albedo of northerly evergreen trees. In contrast, climatemodels that rely on a common two-stream albedo submodel provided accurate predictions of boreal needle-leaf evergreen albedo but overestimated grassland albedos. Inverse analysis showed that parameters of the two-stream model were highly correlated. Consistent with recent observations based on remotely sensed albedo, the AmeriFlux dataset demonstrated a tight linear relationship between canopy albedo and foliage nitrogen concentration (for forest vegetation: albedo 50.0110.071%N, r250.91; forests, grassland, and maize: albedo50.0210.067%N, r250.80). However, this relationship saturated at the higher nitrogen concentrations displayed by soybean foliage. We developed similar relationships between a foliar parameter used in the two-stream albedo model and foliage nitrogen concentration. These nitrogen-based relationships can serve as the basis for a new approach to land surface albedo modeling that simplifies albedo estimation while providing a link to other important ecosystem processes.

  7. Utilizing CLASIC observations and multiscale models to study the impact of improved Land surface representation on modeling cloud- convection

    SciTech Connect (OSTI)

    Niyogi, Devdutta S. [Purdue

    2013-06-07T23:59:59.000Z

    The CLASIC experiment was conducted over the US southern great plains (SGP) in June 2007 with an objective to lead an enhanced understanding of the cumulus convection particularly as it relates to land surface conditions. This project was design to help assist with understanding the overall improvement of land atmosphere convection initiation representation of which is important for global and regional models. The study helped address one of the critical documented deficiency in the models central to the ARM objectives for cumulus convection initiation and particularly under summer time conditions. This project was guided by the scientific question building on the CLASIC theme questions: What is the effect of improved land surface representation on the ability of coupled models to simulate cumulus and convection initiation? The focus was on the US Southern Great Plains region. Since the CLASIC period was anomalously wet the strategy has been to use other periods and domains to develop the comparative assessment for the CLASIC data period, and to understand the mechanisms of the anomalous wet conditions on the tropical systems and convection over land. The data periods include the IHOP 2002 field experiment that was over roughly same domain as the CLASIC in the SGP, and some of the DOE funded Ameriflux datasets.

  8. 30TH INTERNATIONAL COSMIC RAY CONFERENCE A Search for Prompt Very High Energy Emission from Satellite-detected Gamma-

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Satellite-detected Gamma- ray Bursts using Milagro P. M. SAZ PARKINSON & B. L. DINGUS ˇ FOR THE MILAGRO@scipp.ucsc.edu; dingus@lanl.gov Abstract: Gamma-ray bursts (GRBs) have been detected up to GeV energies and are predicted of the Swift bursts. Introduction Almost 40 years after the detection of the first gamma-ray burst (GRB), many

  9. A Long-term hydrologically based dataset of land surface fluxes and states for the conterminous1 U.S.: Update and extensions2

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Real, Santa Clara, CA 95053-056310 11 12 13 14 15 To be submitted to the Journal of Climate and energy exchanges at the20 land surface. These data are gridded at a spatial resolution of 1/16 degree data set has been widely used in water and31 energy budget studies, climate change assessments, drought

  10. A Long-term hydrologically based dataset of land surface fluxes and states for the conterminous1 U.S.: Update and extensions2

    E-Print Network [OSTI]

    Washington at Seattle, University of

    To be submitted to the Journal of Climate as an Expedited Contribution18 19 #12;2 ABSTRACT20 We describe United States, intended to aid in studies of water and energy exchanges at the22 land surface. These data of VIC. The previous data set has been widely used in water and33 energy budget studies, climate change

  11. Variation and Trends of Landscape Dynamics, Land Surface Phenology and Net Primary Production of the Appalachian Mountains

    SciTech Connect (OSTI)

    Wang, Yeqiao; Zhao, Jianjun; Zhou, Yuyu; Zhang, Hongyan

    2012-12-15T23:59:59.000Z

    The gradients of the Appalachian Mountains in elevations and latitudes provide a unique regional perspective of landscape variations in the eastern United States and a section of the southeastern Canada. This study reveals patterns and trends of landscape dynamics, land surface phenology and ecosystem production along the Appalachian Mountains using time series data from Global Inventory Modeling and Mapping Studies (GIMMS) and AVHRR Global Production Efficiency Model (GloPEM) datasets. We analyzed the spatial and temporal patterns of Normalized Difference Vegetation Index (NDVI), length of growing season (LOS) and net primary production (NPP) of selected ecoregions along the Appalachian Mountains regions. We compared the results out of the Appalachian Mountains regions in different spatial contexts including the North America and the Appalachian Trail corridor area. To reveal latitudinal variations we analyzed data and compared the results between 30°N-40°N and 40°N-50°N latitudes. The result revealed significant decreases in annual peak NDVI in the Appalachian Mountains regions. The trend for the Appalachian Mountains regions was -0.0018 (R2=0.55, P<0.0001) NDVI unit decrease per year during 25 years between 1982 and 2006. The LOS had prolonged 0.3 day yr-1 during 25 years over the Appalachian Mountains regions. The NPP increased by 2.68 gC m-2yr-2 in Appalachian Mountains regions from 1981 to 2000. The comparison with the North America reveals the effects of topography and ecosystem compositions of the Appalachian Mountains. The comparison with the Appalachian Trail corridor area provides a regional mega-transect view of the measured variables.

  12. Dynamical friction on satellite galaxies

    E-Print Network [OSTI]

    Michiko Fujii; Yoko Funato; Junichiro Makino

    2006-06-23T23:59:59.000Z

    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.

  13. NATIONAL POLAR-ORBITTING OPERATIONAL ENVIRONMENTAL SATELLITE SYSTEM (NPOESS)

    E-Print Network [OSTI]

    ..................................................................... 12 Surface Albedo EDR....................................................................................................... 14 Land Surface Temperature EDR Surface Albedo EDR

  14. What is the importance of climate model bias when projecting the impacts of climate change on land surface processes?

    SciTech Connect (OSTI)

    Liu, M. L.; Rajagopalan, K.; Chung, S. H.; Jiang, X.; Harrison, J. H.; Nergui, T.; Guenther, Alex B.; Miller, C.; Reyes, J.; Tague, C. L.; Choate, J. S.; Salathe, E.; Stockle, Claudio O.; Adam, J. C.

    2014-05-16T23:59:59.000Z

    Regional climate change impact (CCI) studies have widely involved downscaling and bias-correcting (BC) Global Climate Model (GCM)-projected climate for driving land surface models. However, BC may cause uncertainties in projecting hydrologic and biogeochemical responses to future climate due to the impaired spatiotemporal covariance of climate variables and a breakdown of physical conservation principles. Here we quantify the impact of BC on simulated climate-driven changes in water variables(evapotranspiration, ET; runoff; snow water equivalent, SWE; and water demand for irrigation), crop yield, biogenic volatile organic compounds (BVOC), nitric oxide (NO) emissions, and dissolved inorganic nitrogen (DIN) export over the Pacific Northwest (PNW) Region. We also quantify the impacts on net primary production (NPP) over a small watershed in the region (HJ Andrews). Simulation results from the coupled ECHAM5/MPI-OM model with A1B emission scenario were firstly dynamically downscaled to 12 km resolutions with WRF model. Then a quantile mapping based statistical downscaling model was used to downscale them into 1/16th degree resolution daily climate data over historical and future periods. Two series climate data were generated according to the option of bias-correction (i.e. with bias-correction (BC) and without bias-correction, NBC). Impact models were then applied to estimate hydrologic and biogeochemical responses to both BC and NBC meteorological datasets. These im20 pact models include a macro-scale hydrologic model (VIC), a coupled cropping system model (VIC-CropSyst), an ecohydrologic model (RHESSys), a biogenic emissions model (MEGAN), and a nutrient export model (Global-NEWS). Results demonstrate that the BC and NBC climate data provide consistent estimates of the climate-driven changes in water fluxes (ET, runoff, and water demand), VOCs (isoprene and monoterpenes) and NO emissions, mean crop yield, and river DIN export over the PNW domain. However, significant differences rise from projected SWE, crop yield from dry lands, and HJ Andrews’s ET between BC and NBC data. Even though BC post-processing has no significant impacts on most of the studied variables when taking PNW as a whole, their effects have large spatial variations and some local areas are substantially influenced. In addition, there are months during which BC and NBC post-processing produces significant differences in projected changes, such as summer runoff. Factor-controlled simulations indicate that BC post-processing of precipitation and temperature both substantially contribute to these differences at region scales. We conclude that there are trade-offs between using BC climate data for offline CCI studies vs. direct modeled climate data. These trade-offs should be considered when designing integrated modeling frameworks for specific applications; e.g., BC may be more important when considering impacts on reservoir operations in mountainous watersheds than when investigating impacts on biogenic emissions and air quality (where VOCs are a primary indicator).

  15. The CSIRO Mk3L climate system model v1.0 coupled to the CABLE land surface scheme v1.4b: evaluation of the control climatology

    SciTech Connect (OSTI)

    Mao, Jiafu [ORNL; Phipps, S.J. [University of New South Wales; Pitman, A.J. [University of New South Wales; Wang, Yingping [CSIRO Marine and Atmospheric Research; Abramowitz, G. [University of New South Wales; Pak, B. [CSIRO Marine and Atmospheric Research

    2011-01-01T23:59:59.000Z

    The CSIRO Mk3L climate system model, a reduced-resolution coupled general circulation model, has previously been described in this journal. The model is configured for millennium scale or multiple century scale simulations. This paper reports the impact of replacing the relatively simple land surface scheme that is the default parameterisation in Mk3L with a sophisticated land surface model that simulates the terrestrial energy, water and carbon balance in a physically and biologically consistent way. An evaluation of the new model s near-surface climatology highlights strengths and weaknesses, but overall the atmospheric variables, including the near-surface air temperature and precipitation, are simulated well. The impact of the more sophisticated land surface model on existing variables is relatively small, but generally positive. More significantly, the new land surface scheme allows an examination of surface carbon-related quantities including net primary productivity which adds significantly to the capacity of Mk3L. Overall, results demonstrate that this reduced-resolution climate model is a good foundation for exploring long time scale phenomena. The addition of the more sophisticated land surface model enables an exploration of important Earth System questions including land cover change and abrupt changes in terrestrial carbon storage.

  16. On the connection between continental-scale land surface processes and the tropical climate in a coupled ocean-atmosphere-land system

    SciTech Connect (OSTI)

    Ma, Hsi-Yen; Mechoso, C. R.; Xue, Yongkang; Xiao, Heng; Neelin, David; Ji, Xuan

    2013-11-15T23:59:59.000Z

    The impact of global tropical climate to perturbations in land surface processes (LSP) are evaluated using perturbations given by different LSP representations of continental-scale in a global climate model that includes atmosphere-ocean interactions. One representation is a simple land scheme, which specifies climatological albedos and soil moisture availability. The other representation is the more comprehensive Simplified Simple Biosphere Model, which allows for interactive soil moisture and vegetation biophysical processes. The results demonstrate that LSP processes such as interactive soil moisture and vegetation biophysical processes have strong impacts on the seasonal mean states and seasonal cycles of global precipitation, clouds, and surface air temperature. The impact is especially significant over the tropical Pacific. To explore the mechanisms for such impact, different LSP representations are confined to selected continental-scale regions where strong interactions of climate-vegetation biophysical processes are present. We find that the largest impact is mainly from LSP perturbations over the tropical African continent. The impact is through anomalous convective heating in tropical Africa due to changes in the surface heat fluxes, which in turn affect basinwide teleconnections in the Pacific through equatorial wave dynamics. The modifications in the equatorial Pacific climate are further enhanced by strong air-sea coupling between surface wind stress and upwelling, as well as effect of ocean memory. Our results further suggest that correct representations of land surface processes, land use change and the associated changes in the deep convection over tropical Africa are crucial to reducing the uncertainty when performing future climate projections under different climate change scenarios.

  17. Ecosystem feedbacks to climate change in California: Development, testing, and analysis using a coupled regional atmosphere and land-surface model (WRF3-CLM3.5)

    SciTech Connect (OSTI)

    Subin, Z.M.; Riley, W.J.; Kueppers, L.M.; Jin, J.; Christianson, D.S.; Torn, M.S.

    2010-11-01T23:59:59.000Z

    A regional atmosphere model [Weather Research and Forecasting model version 3 (WRF3)] and a land surface model [Community Land Model, version 3.5 (CLM3.5)] were coupled to study the interactions between the atmosphere and possible future California land-cover changes. The impact was evaluated on California's climate of changes in natural vegetation under climate change and of intentional afforestation. The ability of WRF3 to simulate California's climate was assessed by comparing simulations by WRF3-CLM3.5 and WRF3-Noah to observations from 1982 to 1991. Using WRF3-CLM3.5, the authors performed six 13-yr experiments using historical and future large-scale climate boundary conditions from the Geophysical Fluid Dynamics Laboratory Climate Model version 2.1 (GFDL CM2.1). The land-cover scenarios included historical and future natural vegetation from the Mapped Atmosphere-Plant-Soil System-Century 1 (MC1) dynamic vegetation model, in addition to a future 8-million-ha California afforestation scenario. Natural vegetation changes alone caused summer daily-mean 2-m air temperature changes of -0.7 to +1 C in regions without persistent snow cover, depending on the location and the type of vegetation change. Vegetation temperature changes were much larger than the 2-m air temperature changes because of the finescale spatial heterogeneity of the imposed vegetation change. Up to 30% of the magnitude of the summer daily-mean 2-m air temperature increase and 70% of the magnitude of the 1600 local time (LT) vegetation temperature increase projected under future climate change were attributable to the climate-driven shift in land cover. The authors projected that afforestation could cause local 0.2-1.2 C reductions in summer daily-mean 2-m air temperature and 2.0-3.7 C reductions in 1600 LT vegetation temperature for snow-free regions, primarily because of increased evapotranspiration. Because some of these temperature changes are of comparable magnitude to those projected under climate change this century, projections of climate and vegetation change in this region need to consider these climate-vegetation interactions.

  18. An international land-biosphere model benchmarking activity for the IPCC Fifth Assessment Report (AR5)

    SciTech Connect (OSTI)

    Hoffman, Forrest M [ORNL; Randerson, James T [ORNL; Thornton, Peter E [ORNL; Bonan, Gordon [National Center for Atmospheric Research (NCAR); Erickson III, David J [ORNL; Fung, Inez [University of California, Berkeley

    2009-12-01T23:59:59.000Z

    The need to capture important climate feedbacks in general circulation models (GCMs) has resulted in efforts to include atmospheric chemistry and land and ocean biogeochemistry into the next generation of production climate models, called Earth System Models (ESMs). While many terrestrial and ocean carbon models have been coupled to GCMs, recent work has shown that such models can yield a wide range of results (Friedlingstein et al., 2006). This work suggests that a more rigorous set of global offline and partially coupled experiments, along with detailed analyses of processes and comparisons with measurements, are needed. The Carbon-Land Model Intercomparison Project (C-LAMP) was designed to meet this need by providing a simulation protocol and model performance metrics based upon comparisons against best-available satellite- and ground-based measurements (Hoffman et al., 2007). Recently, a similar effort in Europe, called the International Land Model Benchmark (ILAMB) Project, was begun to assess the performance of European land surface models. These two projects will now serve as prototypes for a proposed international land-biosphere model benchmarking activity for those models participating in the IPCC Fifth Assessment Report (AR5). Initially used for model validation for terrestrial biogeochemistry models in the NCAR Community Land Model (CLM), C-LAMP incorporates a simulation protocol for both offline and partially coupled simulations using a prescribed historical trajectory of atmospheric CO2 concentrations. Models are confronted with data through comparisons against AmeriFlux site measurements, MODIS satellite observations, NOAA Globalview flask records, TRANSCOM inversions, and Free Air CO2 Enrichment (FACE) site measurements. Both sets of experiments have been performed using two different terrestrial biogeochemistry modules coupled to the CLM version 3 in the Community Climate System Model version 3 (CCSM3): the CASA model of Fung, et al., and the carbon-nitrogen (CN) model of Thornton. Comparisons of the CLM3 offline results against observational datasets have been performed and are described in Randerson et al. (2009). CLM version 4 has been evaluated using C-LAMP, showing improvement in many of the metrics. Efforts are now underway to initiate a Nitrogen-Land Model Intercomparison Project (N-LAMP) to better constrain the effects of the nitrogen cycle in biosphere models. Presented will be new results from C-LAMP for CLM4, initial N-LAMP developments, and the proposed land-biosphere model benchmarking activity.

  19. Why baryons matter: The kinematics of dwarf spheroidal satellites

    SciTech Connect (OSTI)

    Brooks, Alyson M. [Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706 (United States); Zolotov, Adi, E-mail: abrooks@physics.rutgers.edu, E-mail: zolotov@physics.huji.ac.il [Racah Institute of Physics, The Hebrew University, Jerusalem 91904 (Israel)

    2014-05-10T23:59:59.000Z

    We use high-resolution cosmological simulations of Milky Way (MW) mass galaxies that include both baryons and dark matter (DM) to show that baryonic physics (energetic feedback from supernovae and subsequent tidal stripping) significantly reduces the DM mass in the central regions of luminous satellite galaxies. The reduced central masses of the simulated satellites reproduce the observed internal dynamics of MW and M31 satellites as a function of luminosity. We use these realistic satellites to update predictions for the observed velocity and luminosity functions of satellites around MW-mass galaxies when baryonic effects are accounted for. We also predict that field dwarf galaxies in the same luminosity range as the MW classical satellites should not exhibit velocities as low as the satellites because the field dwarfs do not experience tidal stripping. Additionally, the early formation times of the satellites compared to field galaxies at the same luminosity may be apparent in the star formation histories of the two populations. Including baryonic physics in cold dark matter (CDM) models naturally explains the observed low DM densities in the MWs dwarf spheroidal population. Our simulations therefore resolve the tension between kinematics predicted in CDM theory and observations of satellites, without invoking alternative forms of DM.

  20. Dynamics of the Galaxy's Satellites

    E-Print Network [OSTI]

    James Binney

    2000-06-28T23:59:59.000Z

    The Milky Way's satellites provide unique information about the density of the Galactic halo at large radii. The inclusion of even a few rather inaccurate proper motions resolves an ambiguity in older mass estimates in favour of higher values. Many of the satellites are concentrated into streams. The dynamics of the Magellanic Stream provided an early indication that the halo reaches out to beyond 100 kpc. Tidal forces between the Clouds are currently disturbing the Clouds' internal dynamics. One would expect this damage to worsen rapidly as the tidal field of the MW excites the eccentricity of the Clouds' mutual orbit. This process, which has yet to be completely modelled, is important for understanding the degree of self-lensing in searches for gravitational lensing events. The Sagittarius Dwarf galaxy very likely contributes significantly to the Galactic warp. The direction of the warp's line of nodes is incorrectly predicted by the simplest models of the Dwarf's orbit. More sophisticated models, in which a complex distribution of stripped dark matter is predicted, may be more successful.

  1. PicPot: a small satellite with educational goals L. Reyneri, C. Sanso, D. Del Corso, C. Passerone, S. Speretta, M. Tranchero

    E-Print Network [OSTI]

    , showing two solar panels and some internal wiring #12;18th EAEEIE conference, Praha, 2007 2 2. A Small of this activity for a next generation of small, limited cost satellites is outlined. Fig 1 ­ Picpot satellite

  2. Satellite characterization of urban aerosols: Importance of including hygroscopicity and mixing state in the retrieval algorithms

    E-Print Network [OSTI]

    Satellite characterization of urban aerosols: Importance of including hygroscopicity and mixing the sensitivity of the calculated optical properties of urban aerosols to (1) hygroscopicity and (2) internal of satellite retrievals of aerosol optical thickness (t) and aerosol effective radius (reff). State

  3. Laser satellite power systems

    SciTech Connect (OSTI)

    Walbridge, E.W.

    1980-01-01T23:59:59.000Z

    A laser satellite power system (SPS) converts solar power captured by earth-orbiting satellites into electrical power on the earth's surface, the satellite-to-ground transmission of power being effected by laser beam. The laser SPS may be an alternative to the microwave SPS. Microwaves easily penetrate clouds while laser radiation does not. Although there is this major disadvantage to a laser SPS, that system has four important advantages over the microwave alternative: (1) land requirements are much less, (2) radiation levels are low outside the laser ground stations, (3) laser beam sidelobes are not expected to interfere with electromagnetic systems, and (4) the laser system lends itself to small-scale demonstration. After describing lasers and how they work, the report discusses the five lasers that are candidates for application in a laser SPS: electric discharge lasers, direct and indirect solar pumped lasers, free electron lasers, and closed-cycle chemical lasers. The Lockheed laser SPS is examined in some detail. To determine whether a laser SPS will be worthy of future deployment, its capabilities need to be better understood and its attractiveness relative to other electric power options better assessed. First priority should be given to potential program stoppers, e.g., beam attenuation by clouds. If investigation shows these potential program stoppers to be resolvable, further research should investigate lasers that are particularly promising for SPS application.

  4. INTERNATIONAL International Internship for

    E-Print Network [OSTI]

    Napier, Terrence

    OFFICE OF INTERNATIONAL AFFAIRS International Internship for Global Leadership Program Student Portugal ­ Laura Sieger Ukraine ­ Mary Brune 2012 Internship Locations #12;Dear Friends and Colleagues of Lehigh University: The International Internship for Global Leadership Program provides Lehigh students

  5. THE MASSIVE SATELLITE POPULATION OF MILKY-WAY-SIZED GALAXIES

    SciTech Connect (OSTI)

    Rodriguez-Puebla, Aldo; Avila-Reese, Vladimir; Drory, Niv, E-mail: apuebla@astro.unam.mx [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, A. P. 70-264, 04510 Mexico, DF (Mexico)

    2013-08-20T23:59:59.000Z

    Several occupational distributions for satellite galaxies more massive than m{sub *} Almost-Equal-To 4 Multiplication-Sign 10{sup 7} M{sub Sun} around Milky-Way (MW)-sized hosts are presented and used to predict the internal dynamics of these satellites as a function of m{sub *}. For the analysis, a large galaxy group mock catalog is constructed on the basis of (sub)halo-to-stellar mass relations fully constrained with currently available observations, namely the galaxy stellar mass function decomposed into centrals and satellites, and the two-point correlation functions at different masses. We find that 6.6% of MW-sized galaxies host two satellites in the mass range of the Small and Large Magellanic Clouds (SMC and LMC, respectively). The probabilities of the MW-sized galaxies having one satellite equal to or larger than the LMC, two satellites equal to or larger than the SMC, or three satellites equal to or larger than Sagittarius (Sgr) are Almost-Equal-To 0.26, 0.14, and 0.14, respectively. The cumulative satellite mass function of the MW, N{sub s} ({>=}m{sub *}) , down to the mass of the Fornax dwarf is within the 1{sigma} distribution of all the MW-sized galaxies. We find that MW-sized hosts with three satellites more massive than Sgr (as the MW) are among the most common cases. However, the most and second most massive satellites in these systems are smaller than the LMC and SMC by roughly 0.7 and 0.8 dex, respectively. We conclude that the distribution N{sub s} ({>=}m{sub *}) for MW-sized galaxies is quite broad, the particular case of the MW being of low frequency but not an outlier. The halo mass of MW-sized galaxies correlates only weakly with N{sub s} ({>=}m{sub *}). Then, it is not possible to accurately determine the MW halo mass by means of its N{sub s} ({>=}m{sub *}); from our catalog, we constrain a lower limit of 1.38 Multiplication-Sign 10{sup 12} M{sub Sun} at the 1{sigma} level. Our analysis strongly suggests that the abundance of massive subhalos should agree with the abundance of massive satellites in all MW-sized hosts, i.e., there is not a missing (massive) satellite problem for the {Lambda}CDM cosmology. However, we confirm that the maximum circular velocity, v{sub max}, of the subhalos of satellites smaller than m{sub *} {approx} 10{sup 8} M{sub Sun} is systematically larger than the v{sub max} inferred from current observational studies of the MW bright dwarf satellites; different from previous works, this conclusion is based on an analysis of the overall population of MW-sized galaxies. Some pieces of evidence suggest that the issue could refer only to satellite dwarfs but not to central dwarfs, then environmental processes associated with dwarfs inside host halos combined with supernova-driven core expansion should be on the basis of the lowering of v{sub max}.

  6. Satellite-Based Quantum Communications

    SciTech Connect (OSTI)

    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

    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.

  7. International Policy International Development

    E-Print Network [OSTI]

    Watson, Andrew

    Research Strategy 2006-2009 International Policy Energy Adaptation International Development Coasts Change Research. Our strategy builds upon our previous work on integrated assessment, energy, adaptation of time. In this spirit, the Centre reconfirms its vision statement: "The Tyndall Centre is the UK network

  8. CCRS Landcover Maps From Satellite Data

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

    Trishchenko, Alexander

    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.

  9. Satellite Radio: Its Global Impact

    E-Print Network [OSTI]

    Udgaonkar, Jayant B.

    Satellite Radio: Its Global Impact TIFR Alumni Lecture By S.Rangarajan #12;1 A wonder called RADIO "No wonder so many physicists started as radio tinkers, and no wonder, before physicist became on Richard Feynmann We will stick to the definition of Radio as · Wireless Audio Delivery ·Listener cannot

  10. Satellite Meteorology and Climatology Division Roadmap

    E-Print Network [OSTI]

    Kuligowski, Bob

    Satellite Meteorology and Climatology Division Roadmap NOAA NESDIS Center for Satellite Applications and Research #12;SMCD Roadmap 2 NOAA/NESDIS/STAR Satellite Meteorology and Climatology Division Roadmap September 2005 NOAA Science Center, 5200 Auth Road, Room 712, Camp Springs, MD 20746 #12;SMCD

  11. Time series analysis of regional climate model performance Jason P. Evans

    E-Print Network [OSTI]

    Evans, Jason

    in Kansas, United States, including the First International Satellite Land Surface Climatology Project, both regional and global, has become apparent. Predictions of the energy and water balance to evapotranspiration and fails to close the energy budget. All of the models overestimate runoff and evapotranspiration

  12. Satellite Ecology: The Dearth of Environment Dependence

    E-Print Network [OSTI]

    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

    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.

  13. Satellite Navigation Integrity Assurance: Lessons Learned

    E-Print Network [OSTI]

    Stanford University

    Satellite Navigation Integrity Assurance: Lessons Learned from Hurricane Katrina ION GNSS 2008 by the FAA Satellite Navigation Program Office #12;17 September 2008 Lessons Learned from Hurricane Katrina 2 for probabilistic modeling and analysis #12;17 September 2008 Lessons Learned from Hurricane Katrina 3 Key Sources

  14. Satellite Eye for Galathea 3 -Slutrapport

    E-Print Network [OSTI]

    Satellite Eye for Galathea 3 - Slutrapport Charlotte Bay Hasager, Peter Brøgger Sørensen, Jacob L Abstract (in English) (max. 2000 char.): The Satellite Eye for Galathea 3 project started on the 10th March August 2006. The expedition lasted in total 256 days (8 months), and the Satelitte Eye project continued

  15. Capture of Irregular Satellites at Jupiter

    E-Print Network [OSTI]

    Nesvorny, D; Deienno, R

    2014-01-01T23:59:59.000Z

    The irregular satellites of outer planets are thought to have been captured from heliocentric orbits. The exact nature of the capture process, however, remains uncertain. We examine the possibility that irregular satellites were captured from the planetesimal disk during the early Solar System instability when encounters between the outer planets occurred (Nesvorny, Vokrouhlicky & Morbidelli 2007, AJ 133; hereafter NVM07). NVM07 already showed that the irregular satellites of Saturn, Uranus and Neptune were plausibly captured during planetary encounters. Here we find that the current instability models present favorable conditions for capture of irregular satellites at Jupiter as well, mainly because Jupiter undergoes a phase of close encounters with an ice giant. We show that the orbital distribution of bodies captured during planetary encounters provides a good match to the observed distribution of irregular satellites at Jupiter. The capture efficiency for each particle in the original transplanetary d...

  16. Amnesty International

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Martin Ennals est secrétaire général d'Amnesty International et fait un discours sur les droits de l'homme

  17. ENGINEERING INTERNATIONAL

    E-Print Network [OSTI]

    University of Technology, Sydney

    COURSE GUIDE 2013 UTS: ENGINEERING INTERNATIONAL UNDERGRADUATE w w w.eng.uts.edu.au #12;2 / ENGINEERING IN AUSTRALIA Internationally, Australian universities have a reputation for high quality research developed close links with many international institutions, particularly in Asia. ENGINEERING IN SYDNEY

  18. Gas Shepherding by an Infalling Satellite

    E-Print Network [OSTI]

    P. Chang

    2008-05-22T23:59:59.000Z

    I calculate the action of a satellite, infalling through dynamical friction, on a coplanar gaseous disk of finite radial extent. The disk tides, raised by the infalling satellite, couple the satellite and disk. Dynamical friction acting on the satellite then shrinks the radius of the coupled satellite-disk system. Thus, the gas is ``shepherded'' to smaller radii. In addition, gas shepherding produces a large surface density enhancement at the disk edge. If the disk edge then becomes gravitationally unstable and fragments, it may give rise to enhanced star formation. On the other hand, if the satellite is sufficiently massive and dense, the gas may be transported from $\\sim 100$ pc to inside of a 10 to 10s of parsecs before completely fragmenting into stars. I argue that gas shepherding may drive the fueling of active galaxies and central starbursts and I compare this scenario to competing scenarios. I argue that sufficiently large and dense super star clusters (acting as the shepherding satellites) can shepherd a gas disk down to ten to tens of parsecs. Inside of ten to tens of parsecs, another mechanism may operate, i.e., cloud-cloud collisions or a marginally (gravitationally) stable disk, that drives the gas $\\lesssim 1$ pc, where it can be viscously accreted, feeding a central engine.

  19. NASA Launches New Earth Observation Satellite

    E-Print Network [OSTI]

    Christian, Eric

    Goddard View The Weekly ­ 2 NASA Launches New Earth Observation Satellite ­ 3 3-D printing Creates Complex free online access to the information. This revolution has al- lowed scientists to detect changes over

  20. Emerging trends in the satellite industry

    E-Print Network [OSTI]

    Salazar, Vagn Knudsen

    2012-01-01T23:59:59.000Z

    Risk aversion in the satellite industry has fostered long development cycles and low rates of innovation in the past. Emerging trends in propulsion technology development and spacecraft architecture design could lead to ...

  1. Synthetic Aperture Radar Interferometry with 3 satellites

    E-Print Network [OSTI]

    Wong, Wallace D. (Wallace Dazheng)

    2005-01-01T23:59:59.000Z

    Our study investigates interferometric SAR (InSAR) post-processing height retrieval techniques. We explore the possible improvements by adding a third satellite to the two already in orbit, and examine some potential uses ...

  2. Dynamics and control of electromagnetic satellite formations

    E-Print Network [OSTI]

    Ahsun, Umair, 1972-

    2007-01-01T23:59:59.000Z

    Satellite formation flying is an enabling technology for many space missions, especially for space-based telescopes. Usually there is a tight formation-keeping requirement that may need constant expenditure of fuel or at ...

  3. MFR PAPER 1230 Finding Fish With Satellites

    E-Print Network [OSTI]

    sensors, fishing vessels , spotter pilots, research vessels, and offshore oil platforms were used Investigation? A. It is an attempt to find out if satellites can help fishermen find fish. Our assumption

  4. Abstract--The INTEGRAL satellite was launched on October 17, 2002. All on-board instruments are operating successfully. In

    E-Print Network [OSTI]

    Boyer, Edmond

    in space. I. INTRODUCTION HE INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory) satellite is an ESA (European Space Agency) gamma-ray observatory successfully launched from Baďkonour on October 17, 2002 extreme phenomena (black hole, accretion in X-ray binaries, gamma-ray bursts, supernovae...). Two

  5. Land Surface Model Data Assimilation for Atmospheric Prediction

    E-Print Network [OSTI]

    Walker, Jeff

    remote sensing studies, using visible, thermal infrared (surface temperature) and microwave (passive, the first passive microwave sensor in space with appropriate frequencies for measuring near-surface soil of concurrent data has made evaluation of SMMR-based studies effectively impossible (Walker et al., 2003

  6. ARM - Cloud and Land Surface Interaction Campaign (CLASIC)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492air Comments? We would love to heargovInstrumentstdma Comments?History OrganizationTwist OutreachCampaign

  7. ARM - Field Campaign - Cloud LAnd Surface Interaction Campaign (CLASIC)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5 Campaign Comments? WeCampaigngovCampaignsCloud

  8. SGP Cloud and Land Surface Interaction Campaign (CLASIC)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEABRV2/01/12 Page3 SGP Cloud and

  9. INTERNATIONAL AGREEMENTS

    Office of Environmental Management (EM)

    generators, reactor pressure vessel and internals, cables, piping, pumps, valves) - optimization of nuclear power plant generation capacity (digital I&C upgrades, advanced...

  10. Analysis of Errors in a Special Perturbations Satellite Orbit Propagator

    SciTech Connect (OSTI)

    Beckerman, M.; Jones, J.P.

    1999-02-01T23:59:59.000Z

    We performed an analysis of error densities for the Special Perturbations orbit propagator using data for 29 satellites in orbits of interest to Space Shuttle and International Space Station collision avoidance. We find that the along-track errors predominate. These errors increase monotonically over each 36-hour prediction interval. The predicted positions in the along-track direction progressively either leap ahead of or lag behind the actual positions. Unlike the along-track errors the radial and cross-track errors oscillate about their nearly zero mean values. As the number of observations per fit interval decline the along-track prediction errors, and amplitudes of the radial and cross-track errors, increase.

  11. Determination of wind from Nimbus-6 satellite sounding data

    E-Print Network [OSTI]

    Carle, William Everett

    1979-01-01T23:59:59.000Z

    -level and surface wind fields from Nimbus-6 satellite sounding data are developed. These methods are evaluated by comparing satellite-derived and rawinsonde wind fields on gridded constant-pressure charts in four geographical regions. Satellite... interpolated to correspond in time to the satellite pass. Wind direction was interpolated through the smaller angle. t. d ttt' fplt*t' l~h' ht dg t th' ' d Fields of geopotential height were computed from gridded satellite data by integrating...

  12. Fundamental to the Cloud Land Surface Interaction Campaign (CLASIC) is understanding the relationships of the atmosphere and the land surface

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof Energy ForrestalPrincetonF2:Bioenergywith emphasis on007

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

    SciTech Connect (OSTI)

    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

    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.

  14. 10. international mouse genome conference

    SciTech Connect (OSTI)

    Meisler, M.H.

    1996-12-31T23:59:59.000Z

    Ten years after hosting the First International Mammalian Genome Conference in Paris in 1986, Dr. Jean-Louis Guenet presided over the Tenth Conference at the Pasteur Institute, October 7--10, 1996. The 1986 conference was a satellite to the Human Gene Mapping Workshop and had approximately 50 attendees. The 1996 meeting was attended by 300 scientists from around the world. In the interim, the number of mapped loci in the mouse increased from 1,000 to over 20,000. This report contains a listing of the program and its participants, and two articles that review the meeting and the role of the laboratory mouse in the Human Genome project. More than 200 papers were presented at the conference covering the following topics: International mouse chromosome committee meetings; Mutant generation and identification; Physical and genetic maps; New technology and resources; Chromatin structure and gene regulation; Rate and hamster genetic maps; Informatics and databases; and Quantitative trait analysis.

  15. Soviet satellite communications science and technology

    SciTech Connect (OSTI)

    Birch, J.N.; Campanella, S.J.; Gordon, G.D.; McElroy, D.R.; Pritchard, W.L.; Stamminger, R.

    1991-08-01T23:59:59.000Z

    This is a report by six US scientists and engineers concerning the current state of the art and projections of future Soviet satellite communications technologies. The panel members are experts in satellite stabilization, spacecraft environments, space power generation, launch systems, spacecraft communications sciences and technologies, onboard processing, ground stations, and other technologies that impact communications. The panel assessed the Soviet ability to support high-data-rate space missions at 128 Mbps by evaluating current and projected Soviet satellite communications technologies. A variety of space missions were considered, including Earth-to-Earth communications via satellites in geostationary or highly elliptical orbits, those missions that require space-to-Earth communications via a direct path and those missions that require space-to-Earth communications via a relay satellite. Soviet satellite communications capability, in most cases, is 10 years behind that of the United States and other industrialized nations. However, based upon an analysis of communications links needed to support these missions using current Soviet capabilities, it is well within the current Soviet technology to support certain space missions outlined above at rates of 128 Mbps or higher, although published literature clearly shows that the Soviet Union has not exceeded 60 Mbps in its current space system. These analyses are necessary but not sufficient to determine mission data rates, and other technologies such as onboard processing and storage could limit the mission data rate well below that which could actually be supported via the communications links. Presently, the Soviet Union appears to be content with data rates in the low-Earth-orbit relay via geostationary mode of 12 Mbps. This limit is a direct result of power amplifier limits, spacecraft antenna size, and the utilization of K{sub u}-band frequencies. 91 refs., 16 figs., 15 tabs.

  16. The 28th International Cosmic Ray Conference 1 X-ray and Gamma-ray Measurements

    E-Print Network [OSTI]

    Enomoto, Ryoji

    The 28th International Cosmic Ray Conference 1 X-ray and Gamma-ray Measurements Masaki Mori-ray and gamma-ray measurements, of the 28th International Cosmic Ray Conference. 1. Introduction Thick atmosphere of the earth forces direct observations of X-rays and gamma-rays on satellites in space

  17. International Programs and Services International Programs

    E-Print Network [OSTI]

    Stephens, Graeme L.

    International Programs and Services _______________ 1.5 Page 1 International Programs and Services OFFICE OF INTERNATIONAL PROGRAMS Offices in Laurel Hall (970) 491-5917 www.international.colostate.edu James A. Cooney, Vice Provost for International Affairs The Office of International Programs acts

  18. International Programs and Services International Programs

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    International Programs and Services International Programs and Services OFFICE OF INTERNATIONAL PROGRAMS Offices in Laurel Hall (970) 491-5917 international.colostate.edu James A. Cooney, Vice Provost for International Affairs The Office of International Programs acts as a catalyst for ideas that bring about

  19. Regional Navigation System Using Geosynchronous Satellites and Stratospheric Airships

    E-Print Network [OSTI]

    Won, Chang-Hee

    - 1 - Regional Navigation System Using Geosynchronous Satellites and Stratospheric Airships Chang navigation system using geosynchronous satellites and stratospheric airships. One important factor and stratospheric airships for the urban areas. In the beginning stage, the system would augment the existing GPS

  20. Earthquake Damage Identification using High-Resolution Satellite

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Earthquake Damage Identification using High-Resolution Satellite Images from the 2003 Northern & evaluation · High-resolution satellite imagery · Images from Boumerdes, Algeria · Semi-automated damage are most damaged? ­ Effects in less populated areas · Earthquake reconnaissance time wasted "looking

  1. Building High-Quality Climate Data Records from Operational Satellites

    E-Print Network [OSTI]

    Kuligowski, Bob

    ;Implications to Construction of Satellite Climate Data Record · Well characterize the errors of satellite-A ATMS NOAA6-14 NOAA15-19 Suomi NPP MetOp-A/B FY

  2. Building technological capability within satellite programs in developing countries

    E-Print Network [OSTI]

    Wood, Danielle Renee

    2012-01-01T23:59:59.000Z

    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 ...

  3. Satellite Infrared Soundings From NOAA Spacecraft

    E-Print Network [OSTI]

    NOAA Tec / Satellite Infrared Soundings From NOAA Spacecraft #12;U.S. DEPARTMENT OF COMMERCE Infrared Soundings From NOAA Spacecraft L. M. McMillin D. Q. Wark J. M. Siomkajlo P. G. Abel A. Werbowetzki. E. Bittner C. M. Hayden #12;UDC 551.507.362.2:551.508.2:551.501.7:535-1 Physics Infrared radiation

  4. Satellite Observations towards the Agriculture applications

    E-Print Network [OSTI]

    Satellite Observations towards the Agriculture applications Osamu Ochiai Japan Aerospace Exploration Agency #12;7/30/2006 IGARSS_2006 Integrated Systems for Agriculture 2 Convergence of Evidence, All Gov't Policy Makers Reference Model: USDA Foreign Agricultural Service PECAD:Production Estimates

  5. Satellite Navigation in Vietnam & The NAVIS Centre

    E-Print Network [OSTI]

    Sekercioglu, Y. Ahmet

    Satellite Navigation in Vietnam & The NAVIS Centre TA HAI TUNG (PhD) NAVIS CentreKme predefined incidents occurring; or each 30 s #12;"The mission of Navis is to boost, in South-East Asia." hcp://navis.hust.edu.vn #12;(Source: Mul,-GNSS Asia) #12;Milestones

  6. NASA Launches Next-Generation Communications Satellite

    E-Print Network [OSTI]

    Christian, Eric

    .nasa.gov Volume 9 Issue 1 February 2013 #12;T he first of NASA's three next-generation Tracking and Data Relay Space Launch Complex-41. After a three-month test phase, NASA will accept the spacecraft for additional rocket blasts off from Space Launch Complex-41 with NASA's Tracking and Data Relay Satellite (TDRS

  7. Satellite Tagging and Cardiac Physiology Reveal Niche

    E-Print Network [OSTI]

    Luther, Douglas S.

    the movements and habitats of most species are unknown. We used a satellite tag attached to the dorsal fin (SPOT), designed with a small Argos trans- mitter, that permits direct attachment to the shark_s dorsal fin (Fig. 1). This tag enables the tracking of sharks with near­real-time positions for multiple years

  8. Isolated Galaxies and Isolated Satellite Systems

    E-Print Network [OSTI]

    Ann, H B; Choi, Yun-Young

    2009-01-01T23:59:59.000Z

    We search for isolated galaxies using a volume-limited sample of galaxies with 0.02r_{vir,nei} and \\rho <\\bar{\\rho} well segregates the CIG galaxies. We confirm the morphology conformity between the host and their satellites, which suggests importance of hydrodynamic interaction among galaxies within their virial radii in galaxy evolution.

  9. 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

  10. SATELLITE SURVEILLANCE OF TROPICAL AND SUBTROPICAL CYCLONES 6.1. Satellites.

    E-Print Network [OSTI]

    directly from NOAAPORT, from NOAA's Environmental Satellite Processing Center (ESPC), or directly from GOES ESPC, the Internet, and other means such d as local networks. 6.1.1.1. GOES-13. GOES-13, launched May

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

    E-Print Network [OSTI]

    Wadsworth, Brandon Scott

    1999-01-01T23:59:59.000Z

    . . F. Typical Paths G. Ground Cell Pass Off. H. ATM System I. Routing. J. Delay Analysis of the Network . 1. Connection between the Galapagos and Coastal Ecuador 2. Connection between the Galapagos and Interior Ecuador... from 18 inches in diameter to several meters. Solar panels and batteries power all of these satellites. B. GEO Services GEO satellites provide a variety of communication services, including telephone, TV, and data. When providing telephone service...

  12. Internal shim

    DOE Patents [OSTI]

    Barth, Clyde H.; Blizinski, Theodore W.

    2003-05-13T23:59:59.000Z

    An internal shim used to accurately measure spaces in conjunction with a standard small probe has a shim top and a chassis. The internal shim is adjustably fixed within the space to be measured using grippers that emerge from the chassis and which are controlled by an arm pivotably attached to the shim top. A standard small probe passes through the shim along guides on the chassis and measures the distance between the exterior of the chassis and the boundary. By summing the measurements on each side of the chassis and the width of the chassis, the dimension of the space can be determined to within 0.001 inches.

  13. CIRES/NGDC Research Associate Satellite Sensor Systems Engineer

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    for Research in Environmental Sciences (CIRES) at the University of Colorado at Boulder has an immediate, Boulder, CO. This position is for a Satellite Sensor Systems Engineer within the NGDC Solar on the Geostationary Operational Environmental Satellites (GOES), Polar-orbiting Operational Environmental Satellites

  14. Satellite Eye for Galathea 3 Annual Report 2006

    E-Print Network [OSTI]

    Satellite Eye for Galathea 3 Annual Report 2006 Charlotte Bay Hasager, Peter Brøgger Sørensen, Leif Title: Satellite Eye for Galathea 3 Annual Report 2006 Department: Wind Energy Department Abstract (max. 2000 char.): ISSN 0106-2840 ISBN 978-87-550-3580-5 The Satellite Eye for Galathea 3 project

  15. Satellite Eye for Galathea 3 Annual Report 2007

    E-Print Network [OSTI]

    Satellite Eye for Galathea 3 Annual Report 2007 Charlotte Bay Hasager, Peter Brøgger Sørensen, Leif Nielsen, Roberto Saldo og René Møller Title: Satellite Eye for Galathea 3 Annual Report 2007 Department: Wind Energy Department Risø-R-1626(EN) March 2008 Abstract (max. 2000 char.): Satellite Eye

  16. Observing ocean heat content using satellite gravity and altimetry

    E-Print Network [OSTI]

    Jayne, Steven

    : 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

  17. International Educational

    E-Print Network [OSTI]

    Yu, Alex

    International Journal of Educational Technology Opportunities and options for Web-enabled databases.D., Arizona State University The landscape of Web-based instruction is changing due to the convergence of the Web and database servers. Web-based database (WBD) servers enhance Web-based instruction by providing

  18. MASSIVE SATELLITES OF CLOSE-IN GAS GIANT EXOPLANETS

    SciTech Connect (OSTI)

    Cassidy, Timothy A.; Johnson, Robert E. [Engineering Physics Program, University of Virginia, Charlottesville, VA 22904-4325 (United States); Mendez, Rolando; Arras, Phil; Skrutskie, Michael F., E-mail: tac2z@virginia.ed, E-mail: rem5d@cms.mail.virginia.ed, E-mail: arras@virginia.ed, E-mail: rej@virginia.ed, E-mail: mfs4n@virginia.ed [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904-4325 (United States)

    2009-10-20T23:59:59.000Z

    We study the orbits, tidal heating and mass loss from satellites around close-in gas giant exoplanets. The focus is on large satellites which are potentially observable by their transit signature. We argue that even Earth-size satellites around hot Jupiters can be immune to destruction by orbital decay; detection of such a massive satellite would strongly constrain theories of tidal dissipation in gas giants, in a manner complementary to orbital circularization. The star's gravity induces significant periodic eccentricity in the satellite's orbit. The resulting tidal heating rates, per unit mass, are far in excess of Io's and dominate radioactive heating out to planet orbital periods of months for reasonable satellite tidal Q. Inside planet orbital periods of about a week, tidal heating can completely melt the satellite. Lastly, we compute an upper limit to the satellite mass loss rate due to thermal evaporation from the surface, valid if the satellite's atmosphere is thin and vapor pressure is negligible. Using this upper limit, we find that although rocky satellites around hot Jupiters with orbital periods less than a few days can be significantly evaporated in their lifetimes, detectable satellites suffer negligible mass loss at longer orbital periods.

  19. Satellites in Discs: Regulating the Accretion Luminosity

    E-Print Network [OSTI]

    Dave Syer; Cathie Clarke

    1995-05-04T23:59:59.000Z

    We demonstrate, using a simple analytic model, that the presence of a massive satellite can globally modify the structure and emission properties of an accretion disc to which it is tidally coupled. We show, using two levels of numerical approximation, that the analytic model gives reasonable results. The results are applicable to two astrophysical situations. In the case of an active galactic nucleus, we consider the case of a $\\sim 10^3\\Msun$ compact companion to the central black-hole and show that it could modulate the emitted spectrum on a timescale of $\\sim10^5$ years. In the case of a T Tauri accretion disc, a satellite such as a sub-dwarf or giant planet could modify the disc spectral energy distribution over a substantial fraction of the T Tauri star lifetime.

  20. Satellite Threat Warning and Attack Reporting

    SciTech Connect (OSTI)

    Hilland, D. [Kirkland AFB, NM (United States). Air Force Research Lab.; Phipps, G. [Sandia National Labs., Albuquerque, NM (United States). Optics & Technologies Dept.; Jingle, C.; Newton, G. [Schafer Corp., Albuquerque, NM (United States)

    1997-12-31T23:59:59.000Z

    The Air Force Research Laboratory`s Satellite Threat Warning and Attack Reporting (STW/AR) program will provide technologies for advanced threat warning and reporting of radio frequency (RF) and laser threats. The STW/AR program objectives are: (a) develop cost- effective technologies to detect, identify, locate, characterize, and report attacks or interference against U.S. and Allied satellites. (b) demonstrate innovative, light-weight, low-power, laser and RF sensors. The program focuses on the demonstration of RF and laser sensors. The RF sensor effort includes the investigation of interferometric antenna arrays, multi-arm spiral and butler matrix antennas, wideband receivers, adaptive processors, and improved processing algorithms. The laser sensor effort includes the investigation of alternative detectors, broadband grating and optical designs, active pixel sensing, and improved processing algorithms.

  1. area northern territory: Topics by E-print Network

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

    LOGAN, C.A. 1987. Fluctuations in fall and winter territory Lougheed, Stephen 52 Evaluation of Land Surface Models in Reproducing Satellite Derived Leaf Area Index over the...

  2. area northern sweden: Topics by E-print Network

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

    Examiner Ericsson Research Royal Institute of Technology Maguire Jr., Gerald Q. 53 Evaluation of Land Surface Models in Reproducing Satellite Derived Leaf Area Index over the...

  3. International Feedstock

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment of EnergyIndustry15Among Statesfor a Smart1.2.1.5 International

  4. International Conference

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other NewsSpinInteragency1Princeton PlasmaInternationalA

  5. International H

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn OtherEnergy International Fuel Services and Commercial2

  6. International Sunport

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn OtherEnergy International Fuel Services»Challenges

  7. Antarctica: measuring glacier velocity from satellite images

    SciTech Connect (OSTI)

    Lucchitta, B.K.; Ferguson, H.M.

    1986-11-28T23:59:59.000Z

    Many Landsat images of Antarctica show distinctive flow and crevasse features in the floating part of ice streams and outlet glaciers immediately below their grounding zones. Some of the features, which move with the glacier or ice stream, remain visible over many years and thus allow time-lapse measurements of ice velocities. Measurements taken from Landsat images of features on Byrd Glacier agree well with detailed ground and aerial observations. The satellite-image technique thus offers a rapid and cost-effective method of obtaining average velocities, to a first order of accuracy, of many ice streams and outlet glaciers near their termini.

  8. Satellite Data Assimilation forSatellite Data Assimilation for Naval Undersea CapabilityNaval Undersea Capability

    E-Print Network [OSTI]

    Chu, Peter C.

    of satellite altimeters necessary to ensure maximum weapon effectiveness · To determine the point at which additional altimeter input no longer increases weapon effectiveness #12;Modular Ocean Data Assimilation for quantifying the effect on weapon presets #12;Environmental Fields · 2 MODAS data fields ­ one with assimilated

  9. atmospheric corrected satellite: Topics by E-print Network

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

    DENSITY ESTIMATION USING SATELLITE PRECISION ORBIT EPHEMERIDES University of Kansas - KU ScholarWorks Summary: The current atmospheric density models are not capable...

  10. Designing Satellite Communication Networks by Zero-One Quadratic Programming

    E-Print Network [OSTI]

    Helme, Marcia P.

    In satellite communications networks, distinctive facilities called homing stations perform special transmission functions. Local demand nodes clustered around each homing station communicate with each other via a local ...

  11. artificial satellites: Topics by E-print Network

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

    been carried out by two different groups of people combining artificial intelligence and artificial life techniques with those of virtual environments Luck, Michael 239 Satellite...

  12. atmosphere research satellite: Topics by E-print Network

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

    remote sensing device), and airplane and satellite observations. Airplane based sensible heat flux Research. This national observatory accommodates numerous remote sensing and...

  13. Development of a composite satellite structure for FORTE

    SciTech Connect (OSTI)

    Grastataro, C.I.; Butler, T.A.; Smith, B.G.; Thompson, T.C.

    1995-04-01T23:59:59.000Z

    The Los Alamos National Laboratory (LANL) in partnership with Composite Optics Incorporated (COI) has advanced the development of low-cost, lightweight, composite technology for use in small satellite structures, in this case, for the Fast On-Orbit Recording of Transient Events (FORTE) satellite mission. The use of advanced composites in space applications is well developed, but the application of an all-composite satellite structure has not been achieved until now. This paper investigates the application of composite technology in the design of an all-composite spacecraft structure for small satellites. Engineering analysis and test results obtained from the development of the spacecraft engineering model are also presented.

  14. Remote Detection Of Quaternary Borate Deposits With Aster Satellite...

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal...

  15. An analysis of the properties of VAS satellite soundings

    E-Print Network [OSTI]

    Rhodes, Robert Charles

    1984-01-01T23:59:59.000Z

    not help to better simulate the satellite profile. The satellite sounding's smoothing seems to be more dependent on the vertical smoothing than it is on the horizontal smoothing, 300 300 . D rv / / I / I I / I I lfJ oI m 700 050 1 l... 26 Synoptic scale constant pressure charts at 700 mb for rawinsonde (top) and satellite (bottom) for 0300 GI'iT 7 Narch 1982. Synoptic scale constant pressure charts at 500 mb for rawinsonde (top) and satellite (bottom) for 0300 GNT 7 March 1982...

  16. Sundman Stability of Natural Planet Satellites

    E-Print Network [OSTI]

    Lukyanov, L G

    2012-01-01T23:59:59.000Z

    The stability of the motion of the planet satellites is considered in the model of the general three-body problem (Sun-planet-satellite). "Sundman surfaces" are constructed, by means of which the concept "Sundman stability" is formulated. The comparison of the Sundman stability with the results of Golubev's c2h method and with the Hill's classical stability in the restricted three-body problem is performed. The constructed Sundman stability regions in the plane of the parameters "energy - moment of momentum" coincide with the analogous regions obtained by Golubev's method, with the value (c2h)cr. The construction of the Sundman surfaces in the three-dimensional space of the specially selected coordinates xyR is carried out by means of the exact Sundman inequality in the general three-body problem. The determination of the singular points of surfaces, the regions of the possible motion and Sundman stability analysis are implemented. It is shown that the singular points of the Sundman surfaces in the coordinate...

  17. Fast object detection for use onboard satellites

    E-Print Network [OSTI]

    Martin Bange; Stefan Jordan; Michael Biermann; Thomas Kaempke; R alf-Dieter Scholz

    2003-01-30T23:59:59.000Z

    We propose an object detection algorithm which is efficient and fast enough to be used in (almost) real time with the limited computer capacities onboard satellites. For stars below the saturation limit of the CCD detectors it is based on a four neighbourhood local maximum criterion in order to find the centre of a stellar image. For saturated stars it is based on the assumption that the image is increasing monotonically towards the centre in the unsaturated part of the image. The algorithm also calculates approximate stellar magnitudes and efficiently rejects most of the cosmics which would otherwise lead to a large number of false detections. The quality of the algorithm was evaluated with the help of a large set of simulated data for the DIVA satellite mission; different assumptions were made for the noise level, and the presence of cosmics or for a variable sky background. We could show that our algorithm fulfills the requirements for DIVA; only in the case of simulated images which included the bright galaxy M31 some fainter stars could not be detected in the galaxy's vicinity. Since stellar images contain large areas without any stars, we propose an additional block-skipping algorithm which can be coded on special-purpose hardware.

  18. The Nuclear Detonation Detection System on the GPS satellites

    SciTech Connect (OSTI)

    Higbie, P.R. [Los Alamos National Lab., NM (United States); Blocker, N.K. [Sandia National Labs., Albuquerque, NM (United States)

    1993-07-27T23:59:59.000Z

    This article begins with a historical perspective of satellite usage in monitoring nuclear detonations. Current capabilities of the 24 GPS satellites in detecting the light, gamma rays, x-rays and neutrons from a nuclear explosion are described. In particular, an optical radiometer developed at Sandia National Laboratories is characterized. Operational information and calibration procedures are emphasized.

  19. Observing geomagnetic induction in magnetic satellite measurements and associated

    E-Print Network [OSTI]

    Constable, Steve

    Observing geomagnetic induction in magnetic satellite measurements and associated implications@ucsd.edu; cconstable@ucsd.edu) [1] Currents induced in Earth by temporal variations in the external magnetic field have by harmonic Dst (``disturbance storm time'') excitation of the magnetospheric ring current in satellite

  20. From the Atlanta Workshop -Use Satellite Data for Model Evaluation

    E-Print Network [OSTI]

    Jacob, Daniel J.

    Assimilation ­ dries surface Control - Model too cool due to moisture Plan to revisit August 2006 Texas evaluations 1. Clouds ­ Clouds play a major role in photolysis rates , temperature and wet chemistry. Models temperature #12;model (control) vs. satellite retrieval Satellite retrievals (K) model (sat. assim.) vs

  1. Tropospheric Ozone Satellite Retrievals in the Pacific Northwest

    E-Print Network [OSTI]

    Collins, Gary S.

    Tropospheric Ozone Satellite Retrievals in the Pacific Northwest Jacqueline Costello1, Farren: Tropospheric ozone is difficult to retrieve from satellites because of the abundance of ozone in the stratosphere. Tropospheric ozone has become a significant environmental issue and can be exacerbated by UT

  2. Compliance of Hazardous Waste Satellite Accumulation Areas (SAAs)

    E-Print Network [OSTI]

    Compliance of Hazardous Waste Satellite Accumulation Areas (SAAs) All Hazardous waste generated to be chemically hazardous and shall be kept in a Satellite Accumulation Area (SAA). The safety coordinator will keep a list of all SAA's in the division and must be notified before an accumulation area

  3. First satellite observations of lower tropospheric ammonia and methanol

    E-Print Network [OSTI]

    First satellite observations of lower tropospheric ammonia and methanol Reinhard Beer,1 Mark W) and methanol (CH3OH), well above the normal background levels. This is the first time that these molecules have. Citation: Beer, R., et al. (2008), First satellite observations of lower tropospheric ammonia and methanol

  4. Quantifying Offshore Wind Resources from Satellite Wind Maps

    E-Print Network [OSTI]

    Pryor, Sara C.

    the spatial extent of the wake behind large offshore wind farms. Copyright © 2006 John Wiley & Sons, LtdQuantifying Offshore Wind Resources from Satellite Wind Maps: Study Area the North Sea C. B National Laboratory, Roskilde, Denmark Offshore wind resources are quantified from satellite synthetic

  5. Ris-R-1298(EN) Validation of Satellite SAR Offshore

    E-Print Network [OSTI]

    resources, e.g. in future planning of offshore wind farms. The report describes the validation analysisRisř-R-1298(EN) Validation of Satellite SAR Offshore Wind Speed Maps to In-Situ Data, Microscale project goal is to develop a method for utilizing the satellite wind speed maps for offshore wind

  6. Optimal Energy Allocation and Admission Control for Communications Satellites

    E-Print Network [OSTI]

    Modiano, Eytan

    Initiative. input and output of energy relatively static, such a satellite may not require a sophisticated1 Optimal Energy Allocation and Admission Control for Communications Satellites Alvin Fu, Eytan Modiano, and John Tsitsiklis Abstract--We address the issue of optimal energy alloca- tion and admission

  7. Validation of satellite ozone profile retrievals using Beijing ozonesonde data

    E-Print Network [OSTI]

    Pan, Laura

    year time period (September 2002 to July 2005) are used to evaluate the performance of ozone profile, the Atmospheric Infrared Sounder (AIRS) on the NASA Aqua satellite and the Microwave Limb Sounder (MLS) on the NASA Aura satellite. Since the Global Positioning System ozone sensors (GPSO3) used in Beijing

  8. Scalable Proportional Allocation of Bandwidth in IP Satellite Networks12

    E-Print Network [OSTI]

    Jain, Raj

    by the Federal Communications Commission (FCC), comprising a total of 73 satellites. Two Non-Geostationary Orbit increased by the convergence of computing and communications and by new applications such as Web surfing telecommunications industry in the Twenty first century. Satellite communication networks can be an integral part

  9. Ris National Laboratory Satellite SAR applied in offshore wind

    E-Print Network [OSTI]

    Risř 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

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

    E-Print Network [OSTI]

    wind power potential. Scatterometer wind data are observed ~ twice per day, whereas SAR onlyRisø-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

  11. International Student Services Office International Student Mentor

    E-Print Network [OSTI]

    Dawson, Jeff W.

    International Student Services Office International Student Mentor Undergraduate and Graduate stages of their transition to academic life at Carleton University. Mentors play a central role in ensuring student success by providing guidance and academic coaching. All ISSO mentors report

  12. Symmetric Satellite Swarms and Choreographic Crystals

    E-Print Network [OSTI]

    Latham Boyle; Jun Yong Khoo; Kendrick Smith

    2014-07-22T23:59:59.000Z

    In this paper, we introduce a natural dynamical analogue of crystalline order, which we call choreographic order. In an ordinary (static) crystal, a high degree of symmetry may be achieved through a careful arrangement of the fundamental repeated elements. In the dynamical analogue, a high degree of symmetry may be achieved by having the fundamental elements perform a carefully choreographed dance. For starters, we show how to construct and classify all symmetric satellite constellations. Then we explain how to generalize these ideas to construct and classify choreographic crystals more broadly. We introduce a quantity, called the "choreography" of a given configuration. We discuss the possibility that some (naturally occurring or artificial) many-body or condensed-matter systems may exhibit choreographic order, and suggest natural experimental signatures that could be used to identify and characterize such systems.

  13. 21 11 13 INTERNATIONAL

    E-Print Network [OSTI]

    Yamamoto, Hirosuke

    31 E 32 F 32 #12; iv INTERNATIONAL ERGONOMICS ASSOCIATION #12; 3 INTERNATIONAL ERGONOMICS ASSOCIATION CODE OF CONDUCT ERGONOMICS ASSOCIATION (2006) http://www.iea.cc/browse.php?contID=international_ergonomics_association A6

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

    E-Print Network [OSTI]

    Virginia Tech

    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

  15. V-163: Red Hat Network Satellite Server Inter-Satellite Sync...

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

    Apache modproxymodrewrite Bug Lets Remote Users Access Internal Servers U-047: Siemens Automation License Manager Bugs Let Remote Users Deny Service or Execute Arbitrary...

  16. Student Trainee (Engineering)- Intern

    Broader source: Energy.gov [DOE]

    The purpose of the Pathways Intern Employment Program is to provide the intern with exposure to public service, enhance educational experience, and support educational goals. The program is...

  17. International Commitments Management

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-11-18T23:59:59.000Z

    This Order establishes a process to manage the Department's International Commitments under the administrative direction of the Office of Policy and International Affairs. No cancellation.

  18. Internal Controls Evaluations

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

    iPortal Space. III. GAO Standards for Internal Control in the Federal Government In 1999, GAO issued revised Standards for Internal Control in the Federal Government. This...

  19. International Subcommittee Report

    Energy Savers [EERE]

    and overall U.S. international nuclear commercial leadership as part of the "Team USA" approach NEAC Meeting December 10, 2014 4 Recommendations by the NEAC International...

  20. A satellite ocean color observation operator system for eutrophication assessment in coastal waters

    E-Print Network [OSTI]

    Fontana, Clément

    A satellite ocean color observation operator system for eutrophication assessment in coastal waters: Satellite ocean color Observation operator Eutrophication Remote sensing Radiative transfer modeling

  1. Space Communications Policy Division, Ministry of Internal Affairs and Communications, Japan

    E-Print Network [OSTI]

    Space Communications Policy Division, Ministry of Internal Affairs and Communications, Japan Hideki BABA h-baba@soumu.go.jp Space Communications Policy in Japan #12;Communication Satellite Technologies life bus 10 years mission 3 years GSO 146°E weight 3 tons (dry) power 7.5 kW Large reflector

  2. Assessor Training International

    E-Print Network [OSTI]

    NVLAP Assessor Training International Arrangements #12;Assessor Training 2009: International;Assessor Training 2009: International Arrangements 3 2009 is the 10th anniversary of the signing granted by a signatory to the ILAC Arrangement #12;Assessor Training 2009: International Arrangements 4

  3. STEP Intern Job Description

    Broader source: Energy.gov [DOE]

    STEP Intern Job Description, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  4. IN TODAY'S PAPER International

    E-Print Network [OSTI]

    India's participation in the multi-billion-dollar International Thermonuclear Reactor project which aims

  5. INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (2010)

    E-Print Network [OSTI]

    Niyogi, Dev

    2010-01-01T23:59:59.000Z

    and climatic changes on water and energy cycle in the upper Midwest United States Vimal Mishra,a* Keith A; land surface response; sensitivity analysis; water and energy cycle; deforestation. Introduction Land-use and climate changes are major drivers of the Earth's water and energy cycle (Mahmood et

  6. Search for Dark Matter Satellites Using the FERMI-LAT

    SciTech Connect (OSTI)

    Ackermann, M.; /DESY; Albert, A.; /Ohio State U.; 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 /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bellazzini, R.; /INFN, Pisa; Blandford, R.D.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bloom, E.D.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /SLAC; Bonamente, E.; /INFN, Perugia /Perugia U.; Borgland, A.W.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bottacini, E.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Brandt, T.J.; /IRAP, Toulouse /Toulouse III U.; Bregeon, J.; /INFN, Pisa; Brigida, M.; /Bari U. /INFN, Bari; Bruel, P.; /Ecole Polytechnique; Buehler, R.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Burnett, T.H.; /Washington U., Seattle; Caliandro, G.A.; /ICE, Bellaterra; Cameron, R.A.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /IASF, Milan /IASF, Milan /DAPNIA, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /ASDC, Frascati /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Stockholm U. /Stockholm U., OKC /ASDC, Frascati /Bari U. /INFN, Bari /Naval Research Lab, Wash., D.C. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Bari U. /INFN, Bari /Ecole Polytechnique /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Hiroshima U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Bari U. /INFN, Bari /INFN, Bari /INFN, Perugia /Perugia U. /Bari U. /INFN, Bari /Bari U. /INFN, Bari /Bologna Observ. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; /more authors..

    2012-08-16T23:59:59.000Z

    Numerical simulations based on the {Lambda}CDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites. We report the results of a Large Area Telescope (LAT) search for these satellites via the {gamma}-ray emission expected from the annihilation of weakly interacting massive particle (WIMP) dark matter. Some dark matter satellites are expected to have hard {gamma}-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on {gamma}-ray spectra consistent with WIMP annihilation through the b{bar b} channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100 GeV WIMP annihilating through the b{bar b} channel.

  7. On the use of Satellite Television in High Energy Physics

    E-Print Network [OSTI]

    Lucas Taylor; David O. Williams

    1998-10-24T23:59:59.000Z

    This paper assesses the feasibility of exploiting commercial satellite television technologies to broadcast video signals and data from major High Energy Physics facilities to collaborating institutes throughout the world.

  8. Risk management of student-run small satellite programs

    E-Print Network [OSTI]

    Deems, Elizabeth (Elizabeth Carolina)

    2007-01-01T23:59:59.000Z

    This paper proposes an approach for failure mode identification in university-affiliated, small satellite programs. These small programs have a unique set of risks due to many factors, including a typically inexperienced ...

  9. Aerospace Power & Electronics Simulation Workshop 2004 Satellite Attitude Control

    E-Print Network [OSTI]

    Simon, Dan

    Aerospace Power & Electronics Simulation Workshop 2004 · Satellite Attitude Control System Design;3Aerospace Power & Electronics Simulation Workshop 2004 ADCS ·ADCS: Attitude Determination and Control subsystem ·Attitude Determination - Using sensors ·Attitude Control - Using actuators #12;4Aerospace Power

  10. The use of satellite-based technology in developing countries

    E-Print Network [OSTI]

    Wood, Danielle Renee

    2007-01-01T23:59:59.000Z

    Satellite technology in the areas of remote sensing, communication, and navigation can provide valuable information in a number of areas from business to disaster management to agriculture. There is great potential for ...

  11. Sea Oil Field Satellite Monitoring: An Opera3onal View

    E-Print Network [OSTI]

    Kuligowski, Bob

    through oil drilling. It is refined and separated, most easily by boiling In the oil industry, the term "North Sea" o`en includes areasSea Oil Field Satellite Monitoring: An Opera3onal View Maurizio

  12. aster satellite images: Topics by E-print Network

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

    data, with no false positives. The failure rate is consistent with the inc... Lang, Dustin; Mierle, Keir; Blanton, Michael; Roweis, Sam 2009-01-01 267 The Satellite-substructure...

  13. Satellite measurements of the clear-sky greenhouse effect from

    E-Print Network [OSTI]

    Waliser, Duane E.

    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

  14. An integrated evolutionary model approach to small satellite engineering

    E-Print Network [OSTI]

    Robinson, Joseph B. (Joseph Brian)

    2010-01-01T23:59:59.000Z

    A deficiency exists in the use of detailed integrated modeling in the design, fabrication, and operations of small satellites (<180kg). This need led to the design of the Integrated Evolutionary Model (IEM) approach to ...

  15. A small satellite preliminary thermal control and heat shield analysis

    E-Print Network [OSTI]

    Melani Barreiro, Diego A

    2008-01-01T23:59:59.000Z

    As part of a student owned small satellite project, a preliminary thermal control and heat shield analysis was developed to verify acceptable performance requirements for the system. For the thermal control section, the ...

  16. Plasma-satellite interaction driven magnetic field perturbations

    SciTech Connect (OSTI)

    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

    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.

  17. Remote sensing of terrestrial tropospheric aerosols from aircraft and satellites

    E-Print Network [OSTI]

    Remote sensing of terrestrial tropospheric aerosols from aircraft and satellites M I Mishchenko1 instruments suitable for aerosol remote sensing and give examples of aerosol retrievals obtained forcing directly by absorbing and reflecting sunlight, thereby cooling or heating the atmosphere

  18. A mathematical simulation of earth satellite explosion debris orbital elements

    E-Print Network [OSTI]

    Mabrey, Wayne Edward

    1970-01-01T23:59:59.000Z

    perspective: (1) By simulating the explosion of a satellite we mean that: given the knowledge of' the number of pieces and the force vector of each piece, we will simulate the resulting trajectories. (2) The simulation of a satellite trajectory... classical elements of each debris piece as a function of: (1) the trajectory of the center of mass of *he explosion debris and (2) the explosive forces. Computer program modules are developed to create an explosion and calculate the elements of each...

  19. Determination of wind from Nimbus-6 satellite sounding data 

    E-Print Network [OSTI]

    Carle, William Everett

    1979-01-01T23:59:59.000Z

    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...

  20. FPGA Implementation of a Satellite Attitude Control using Variable Structure Control

    E-Print Network [OSTI]

    Aboelaze, Mokhtar

    the weight and power consumption of the satellite. Failure to properly control the satellite can leadFPGA Implementation of a Satellite Attitude Control using Variable Structure Control Mokhtar Dept. of Electrical Engineering Effat University Jeddah Saudi Arabia Abstract-- Satellite control

  1. Internal Wave Interferometry

    E-Print Network [OSTI]

    Mathur, Manikandan S.

    Internal waves are a ubiquitous and significant means of momentum and energy transport in the oceans, atmosphere, and astrophysical bodies. Here, we show that internal wave propagation in nonuniform density stratifications, ...

  2. Essays in international trade

    E-Print Network [OSTI]

    Romalis, John

    2001-01-01T23:59:59.000Z

    This thesis is a collection of essays on the effect of trade costs on international trade. Chapter 1 derives and empirically examines how factor proportions determine the structure of commodity trade when international ...

  3. International aeronautical user charges

    E-Print Network [OSTI]

    Odoni, Amedeo R.

    1985-01-01T23:59:59.000Z

    Introduction: 1.1 BACKGROUND AND MOTIVATION Very few issues relating to the international air transportation industry are today as divisive as those pertaining to user charges imposed at international airports and enroute ...

  4. Workshop on Satellites for Solar Energy Resource Information -Washington, DC, April 10-11, 1996 POTENTIALS OF IMAGES FROM GEOSTATIONARY SATELLITE DATA FOR THE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Workshop on Satellites for Solar Energy Resource Information - Washington, DC, April 10-11, 1996 POTENTIALS OF IMAGES FROM GEOSTATIONARY SATELLITE DATA FOR THE ASSESSMENT OF SOLAR ENERGY PARAMETERS Lucien Author manuscript, published in "Workshop `satellites for solar energy resource information', Washington

  5. International Exeter annual report

    E-Print Network [OSTI]

    -chancellor's international engagement 68 China and Hong Kong 74 India 78 United States of America 82 United Arab Emirates 88

  6. International Exeter annual report

    E-Print Network [OSTI]

    -Chancellor's international engagement 66 China and Hong Kong 72 India 76 United States of America 80 United Arab Emirates 86

  7. International and Finance

    E-Print Network [OSTI]

    Little, Tony

    MSc International Accounting and Finance #12;What is International Accounting and Finance and why involved. Why study International Accounting and Finance at Stirling? One In the most recent Research Assessment Exercise, the University of Stirling's division of Accounting and Finance was rated first equal

  8. INTERNATIONAL STUDENT ADMISSIONS

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Marine Renewable Energy Center, one of only three in the country. u Benefit from FAU's collaborativeADMISSIONS INTERNATIONAL STUDENT ADMISSIONS INTERNATIONAL STUDENT ADMISSIONS A cutting-edge research university that offers a high-quality education WWW.FAU.EDU/INTERNATIONAL[FAU] #12;WORLD

  9. A Baryonic Solution to the Missing Satellites Problem

    SciTech Connect (OSTI)

    Brooks, Alyson M.; Kuhlen, Michael; Zolotov, Adi; Hooper, Dan

    2013-03-01T23:59:59.000Z

    It has been demonstrated that the inclusion of baryonic physics can alter the dark matter densities in the centers of low-mass galaxies, making the central dark matter slope more shallow than predicted in pure cold dark matter simulations. This flattening of the dark matter profile can occur in the most luminous subhalos around Milky Way mass galaxies. Zolotov et al. have suggested a correction to be applied to the central masses of dark matter-only satellites in order to mimic the affect of (1) the flattening of the dark matter cusp due to supernova feedback in luminous satellites and (2) enhanced tidal stripping due to the presence of a baryonic disk. In this paper, we apply this correction to the z = 0 subhalo masses from the high resolution, dark matter-only Via Lactea II (VL2) simulation, and find that the number of massive subhalos is dramatically reduced. After adopting a stellar mass to halo mass relationship for the VL2 halos, and identifying subhalos that are (1) likely to be destroyed by stripping and (2) likely to have star formation suppressed by photo-heating, we find that the number of massive, luminous satellites around a Milky Way mass galaxy is in agreement with the number of observed satellites around the Milky Way or M31. We conclude that baryonic processes have the potential to solve the missing satellites problem

  10. Geospatial Visualization of Global Satellite Images with Vis-EROS

    SciTech Connect (OSTI)

    Standart, G. D.; Stulken, K. R.; Zhang, Xuesong; Zong, Ziliang

    2011-04-13T23:59:59.000Z

    The Earth Resources Observation and Science (EROS) Center of U.S. Geological Survey is currently managing and maintaining the world largest satellite images distribution system, which provides 24/7 free download service for researchers all over the globe in many areas such as Geology, Hydrology, Climate Modeling, and Earth Sciences. A large amount of geospatial data contained in satellite images maintained by EROS is generated every day. However, this data is not well utilized due to the lack of efficient data visualization tools. This software implements a method for visualizing various characteristics of the global satellite image download requests. More specifically, Keyhole Markup Language (KML) files are generated which can be loaded into an earth browser such as Google Earth. Colored rectangles associated with stored satellite scenes are painted onto the earth browser; and the color and opacity of each rectangle is varied as a function of the popularity of the corresponding satellite image. An analysis of the geospatial information obtained relative to specified time constraints provides an ability to relate image download requests to environmental, political, and social events.

  11. DARK SATELLITES AND THE MORPHOLOGY OF DWARF GALAXIES

    SciTech Connect (OSTI)

    Helmi, Amina; Starkenburg, E.; Starkenburg, T. K.; Vera-Ciro, C. A. [Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen (Netherlands); Sales, L. V. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany); De Lucia, G. [INAF-Astronomical Observatory of Trieste, via G.B. Tiepolo 11, I-34143 Trieste (Italy); Li, Y.-S., E-mail: ahelmi@astro.rug.nl [Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871 (China)

    2012-10-10T23:59:59.000Z

    One of the strongest predictions of the {Lambda}CDM cosmological model is the presence of dark satellites orbiting all types of galaxies. We focus here on the dynamical effects of such satellites on disky dwarf galaxies, and demonstrate that these encounters can be dramatic. Although mergers with M{sub sat} > M{sub d} are not very common, because of the lower baryonic content they occur much more frequently on the dwarf scale than for L{sub *} galaxies. As an example, we present a numerical simulation of a 20% (virial) mass ratio merger between a dark satellite and a disky dwarf (akin to the Fornax dwarf galaxy in luminosity) that shows that the merger remnant has a spheroidal morphology. Perturbations by dark satellites thus provide a plausible path for the formation of dSph systems. The transition from disky to the often amorphous, irregular, or spheroidal morphologies of dwarfs could be a natural consequence of the dynamical heating of hitherto unobservable dark satellites.

  12. Experimental Single-Photon Transmission from Satellite to Earth

    E-Print Network [OSTI]

    Juan Yin; Yuan Cao; Shu-Bin Liu; Ge-Sheng Pan; Jin-Hong Wang; Tao Yang; Zhong-Ping Zhang; Fu-Min Yang; Yu-Ao Chen; Cheng-Zhi Peng; Jian-Wei Pan

    2013-06-04T23:59:59.000Z

    Free-space quantum communication with satellites opens a promising avenue for global secure quantum network and large-scale test of quantum foundations. Recently, numerous experimental efforts have been carried out towards this ambitious goal. However, one essential step - transmitting single photons from the satellite to the ground with high signal-to-noise ratio (SNR) at realistic environments - remains experimental challenging. Here, we report a direct experimental demonstration of the satellite-ground transmission of a quasi-single-photon source. In the experiment, single photons (~0.85 photon per pulse) are generated by reflecting weak laser pulses back to earth with a cube-corner retro-reflector on the satellite Champ, collected by a 600-mm diameter telescope at the ground station, and finally detected by single-photon counting modules (SPCMs) after 400-km free-space link transmission. With the help of high accuracy time synchronization, narrow receiver field-of-view (FOV) and high-repetition-rate pulses (76 MHz), a SNR of better than 16:1 is obtained, which is sufficient for a secure quantum key distribution. Our experimental results represent an important step towards satellite-ground quantum communication.

  13. From Domestic vs. International to Domestic and International

    E-Print Network [OSTI]

    Amin, S. Massoud

    % 20% 30% 40% 50% 60% 70% 80% 90% 100% Domestic International International Domestic 100% 67% 86% 29

  14. Tracking target objects orbiting earth using satellite-based telescopes

    DOE Patents [OSTI]

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

    2014-10-14T23:59:59.000Z

    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.

  15. Scaling of solid state lasers for satellite power beaming applications

    SciTech Connect (OSTI)

    Friedman, H.W.; Albrecht, G.F.; Beach, R.J.

    1994-01-01T23:59:59.000Z

    The power requirements for a satellite power beaming laser system depend upon the diameter of the beam director, the performance of the adaptive optics system, and the mission requirements. For an 8 meter beam director and overall Strehl ratio of 50%, a 30 kW laser at 850 nm can deliver an equivalent solar flux to a satellite at geostationary orbit. Advances in Diode Pumped Solid State Lasers (DPSSL) have brought these small, efficient and reliable devices to high average power and they should be considered for satellite power beaming applications. Two solid state systems are described: a diode pumped Alexandrite and diode pumped Thulium doped YAG. Both can deliver high average power at 850 nm in a single aperture.

  16. Dust en-route to Jupiter and the Galilean satellites

    E-Print Network [OSTI]

    Krüger, H; Krueger, Harald; Gruen, Eberhard

    2002-01-01T23:59:59.000Z

    Spacecraft investigations during the last ten years have vastly improved our knowledge about dust in the Jovian system. All Galilean satellites, and probably all smaller satellites as well, are sources of dust in the Jovian system. In-situ measurements with the dust detectors on board the Ulysses and Galileo spacecraft have for the first time demonstrated the electromagnetic interaction of charged dust grains with the interplanetary magnetic field and with a planetary magnetosphere. Jupiter's magnetosphere acts as a giant mass-velocity spectrometer for charged 10-nanometer dust grains. These dust grains are released from Jupiter's moon Io with typical rate of 1 kg s^1. The dust streams probe the plasma conditions in the Io plasma torus and can be used as a potential monitor of Io's volcanic plume activity. The other Galilean satellites are surrounded by tenuous impact-generated clouds of mostly sub-micrometer ejecta grains. Galileo measurements have demonstrated that impact-ejecta derived from hypervelocity i...

  17. Modeling the Jovian subnebula: II - Composition of regular satellites ices

    E-Print Network [OSTI]

    Olivier Mousis; Yann Alibert

    2005-10-28T23:59:59.000Z

    We use the evolutionary turbulent model of Jupiter's subnebula described by Alibert et al. (2005a) to constrain the composition of ices incorporated in its regular icy satellites. We consider CO2, CO, CH4, N2, NH3, H2S, Ar, Kr, and Xe as the major volatile species existing in the gas-phase of the solar nebula. All these volatile species, except CO2 which crystallized as a pure condensate, are assumed to be trapped by H2O to form hydrates or clathrate hydrates in the solar nebula. Once condensed, these ices were incorporated into the growing planetesimals produced in the feeding zone of proto-Jupiter. Some of these solids then flowed from the solar nebula to the subnebula, and may have been accreted by the forming Jovian regular satellites. We show that ices embedded in solids entering at early epochs into the Jovian subdisk were all vaporized. This leads us to consider two different scenarios of regular icy satellites formation in order to estimate the composition of the ices they contain. In the first scenario, icy satellites were accreted from planetesimals that have been produced in Jupiter's feeding zone without further vaporization, whereas, in the second scenario, icy satellites were accreted from planetesimals produced in the Jovian subnebula. In this latter case, we study the evolution of carbon and nitrogen gas-phase chemistries in the Jovian subnebula and we show that the conversions of N2 to NH3, of CO to CO2, and of CO to CH4 were all inhibited in the major part of the subdisk. Finally, we assess the mass abundances of the major volatile species with respect to H2O in the interiors of the Jovian regular icy satellites. Our results are then compatible with the detection of CO2 on the surfaces of Callisto and Ganymede and with the presence of NH3 envisaged in subsurface oceans within Ganymede and Callisto.

  18. North and northeast Greenland ice discharge from satellite radar interferometry

    SciTech Connect (OSTI)

    Rignot, E.J. [California Institute of Technology, Pasadena, CA (United States)] [California Institute of Technology, Pasadena, CA (United States); Gogineni, S.P. [Univ. of Kansas, Lawrence, KS (United States)] [Univ. of Kansas, Lawrence, KS (United States); Krabill, W.B. [NASA Goddard Space Flight Center, Wallops Island, VA (United States)] [and others] [NASA Goddard Space Flight Center, Wallops Island, VA (United States); and others

    1997-05-09T23:59:59.000Z

    Ice discharge from north and northeast Greenland calculated from satellite radar interferometry data of 14 outlet glaciers is 3.5 times that estimated from iceberg production. The satellite estimates, obtained at the grounding line of the outlet glaciers, differ from those obtained at the glacier front, because basal melting is extensive at the underside of the floating glacier sections. The results suggest that the north and northeast parts of the Greenland ice sheet may be thinning and contributing positively to sea-level rise. 24 refs., 3 figs., 1 tab.

  19. Internal dosimetry software comparison

    E-Print Network [OSTI]

    Fulmer, Judith Renee

    1992-01-01T23:59:59.000Z

    (ICRP) published in 1979 provided an improved approach for the assessment of internal dose. The ICRP recommendations were implemented in federal regulations promulgated by the Nuclear Regulatory Commission (NRC) in the Code of Federal Regulations (10... in the assessment of internal dose has led to the development of various computer software. In this study, several internal dosimetry codes were examined using a standard set of benchmark problems incorporating authentic exposure data. Personal computer...

  20. Synchronization of system-of-systems interfaces in military satellite communications

    E-Print Network [OSTI]

    Davis, Mark J. (Mark Jeffrey)

    2008-01-01T23:59:59.000Z

    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 ...

  1. Bouquet: a Satellite Constellation Visualization Program for Walkers and Lattice Flower Constellations

    E-Print Network [OSTI]

    Enkh, Mandakh

    2011-10-21T23:59:59.000Z

    of visualizing numerous user defined satellites in both 3D and 2D, and plot trajectories corresponding to arbitrary coordinate frames. The ultimate goal of Bouquet is to provide a viable open source alternative to commercial satellite orbit analysis programs...

  2. Short term forecasting of solar radiation based on satellite data

    E-Print Network [OSTI]

    Heinemann, Detlev

    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

  3. applications technology satellite: Topics by E-print Network

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

    applications technology satellite First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Use of the high...

  4. Wind energy calculated from SAR and scatterometer satellite data

    E-Print Network [OSTI]

    Slide no. The WAsP icon #12;1 8 Slide no. Wind observations #12;1 9 Slide no. European Wind Atlas #121 Slide no. 4 Wind energy calculated from SAR and scatterometer satellite data Charlotte Bay, Italy, 23-24 June 2003 #12;2 Slide no. 4 Presentation · Risø National Laboratory/ Wind Energy Dept

  5. Molecular biology study of satellite panicum mosaic virus capsid protein

    E-Print Network [OSTI]

    Qi, Dong

    2009-05-15T23:59:59.000Z

    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...

  6. Using satellite data for mapping offshore wind resources and wakes

    E-Print Network [OSTI]

    (no wind) Horns Rev Offshore Wind Farm Blaavandshuk Met. mast N #12;Wind Horns Rev Wind speed map from · Wake near large offshore wind farms is quantified in space and time · Software for usersUsing satellite data for mapping offshore wind resources and wakes Charlotte Bay Hasager, Merete

  7. Micro-Electromagnetic Formation Flight of Satellite Systems Aya Sakaguchi

    E-Print Network [OSTI]

    to maintain a satellite's relative position in a formation. Thus far, high temperature superconducting (HTS) wire has been considered the enabling technology and the concept has been sized for aggressive as well as HTS EMFF and shown to be advantageous in close proximity formations. Because the forces

  8. AVIATION UTILIZATION OF GEOSTATIONARY SATELLITES FOR THE AUGMENTATION TO

    E-Print Network [OSTI]

    Stanford University

    currently under development by the Federal Aviation Administration (FAA). WAAS will provide correctionsAVIATION UTILIZATION OF GEOSTATIONARY SATELLITES FOR THE AUGMENTATION TO GPS: RANGING AND DATA LINK to aviation users for the GPS clock, its ephemeris, and for the delay in its signal as it passes through

  9. NO2 lidar profile measurements for satellite interpretation and validation

    E-Print Network [OSTI]

    Dirksen, Ruud

    NO2 lidar profile measurements for satellite interpretation and validation H. Volten,1 E. J matter. We describe a novel instrument, the RIVM NO2 mobile lidar, to measure tropospheric NO2 profiles collection of lidar NO2 profiles, coinciding with OMI and SCIAMACHY overpasses. On clear days and early

  10. Greenland snow accumulation estimates from satellite radar scatterometer data

    E-Print Network [OSTI]

    Long, David G.

    Greenland snow accumulation estimates from satellite radar scatterometer data Mark R. Drinkwater accumulation on the Greenland ice sheet. Microwave radar backscatter images of Greenland are derived using (or decrease) in net snow accumulation on the polar ice caps. The net mass balance of the Greenland

  11. Update on the Solar Power Satellite transmitter design

    SciTech Connect (OSTI)

    Brown, W.C.

    1986-01-01T23:59:59.000Z

    A number of remaining problems in the conceptual design of the transmitting antenna for the Solar Power Satellite have been solved as a result of additional technology development. Much of the technology was derived from the conceptual design of a ground-based transmitting antenna for beaming power to a high altitude airship or airplane.

  12. Deriving Atmospheric Density Estimates Using Satellite Precision Orbit Ephemerides

    E-Print Network [OSTI]

    Hiatt, Andrew Timothy

    2009-01-01T23:59:59.000Z

    due to atmospheric drag m/s2 ap geomagnetic 3-hourly planetary equivalent amplitude index gamma, Telsa, or kg s m-1 A satellite cross-sectional area m2 Ap geomagnetic daily planetary amplitude index gamma, Telsa, or kg s m-1 B B? estimated...

  13. Ionization satellites of the ArHe dimer

    SciTech Connect (OSTI)

    Miteva, Tsveta; Klaiman, Shachar; Gokhberg, Kirill [Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany); Gromov, Evgeniy V., E-mail: Evgeniy.Gromov@pci.uni-heidelberg.de [Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany); Laboratory of Quantum Chemistry, Computer Center, Irkutsk State University, K. Marks 1, 664003 Irkutsk (Russian Federation)

    2014-05-28T23:59:59.000Z

    Ionization satellites are key ingredients in the control of post ionization processes such as molecular dissociation and interatomic Coulombic decay. Here, using the high-level ab initio method of multi-reference configuration interaction up to triple excitations, we study the potential energy curves (PECs) of the ionization satellites of the ArHe dimer. With this model system, we demonstrate that the simple model used in alkaline earth metal and rare gas complexes to describe the satellites as a Rydberg electron moving on top of a dicationic core does not fully hold for the rare gas clusters. The more complex valence structure in the rare gas atom leads to the mixing of different electronic configurations of the dimer. This prevents one from assigning a single dicationic parent state to some of the ionization satellites. We further analyze the structure of the different PECs, demonstrating how the density of the Rydberg electron is reflected in the structure of the PEC wherever the simple model is applicable.

  14. Fisheries Applications of Satellite Data in the Eastern North Pacific

    E-Print Network [OSTI]

    is particularly useful. However, satellite measurements are usually limited to the surface or near- surface layers radiance from the earth's surface in visible, thermal infrared (IR), and microwave wavelength bands (Table by reflection from the sea surface and clouds, and by absorption, emission, and scatter by atmospheric

  15. artificial earth satellites: Topics by E-print Network

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

    earth satellites First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 On the possibility of testing the Weak...

  16. artificial earth satellite: Topics by E-print Network

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

    earth satellite First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 On the possibility of testing the Weak...

  17. Dust en-route to Jupiter and the Galilean satellites

    E-Print Network [OSTI]

    Harald Krueger; Eberhard Gruen

    2002-05-28T23:59:59.000Z

    Spacecraft investigations during the last ten years have vastly improved our knowledge about dust in the Jovian system. All Galilean satellites, and probably all smaller satellites as well, are sources of dust in the Jovian system. In-situ measurements with the dust detectors on board the Ulysses and Galileo spacecraft have for the first time demonstrated the electromagnetic interaction of charged dust grains with the interplanetary magnetic field and with a planetary magnetosphere. Jupiter's magnetosphere acts as a giant mass-velocity spectrometer for charged 10-nanometer dust grains. These dust grains are released from Jupiter's moon Io with typical rate of 1 kg s^1. The dust streams probe the plasma conditions in the Io plasma torus and can be used as a potential monitor of Io's volcanic plume activity. The other Galilean satellites are surrounded by tenuous impact-generated clouds of mostly sub-micrometer ejecta grains. Galileo measurements have demonstrated that impact-ejecta derived from hypervelocity impacts onto satellites are the major -- if not the only -- constituent of dusty planetary rings. We review the in-situ dust measurements at Jupiter and give an update of most recent results.

  18. Tropospheric carbon monoxide: satellite observations and their applications 

    E-Print Network [OSTI]

    MacCallum, Stuart Neil

    2008-01-01T23:59:59.000Z

    of greenhouse gases such as CH4 and O3. Consequently, CO has an atmospheric lifetime of 1-3 months, making it a good tracer for studying the long range transport of pollution. Satellite observations present a valuable tool to investigate tropospheric CO...

  19. EM International. Volume 1

    SciTech Connect (OSTI)

    Not Available

    1993-07-01T23:59:59.000Z

    It is the intent of EM International to describe the Office of Environmental Restoration and Waste Management`s (EM`s) various roles and responsibilities within the international community. Cooperative agreements and programs, descriptions of projects and technologies, and synopses of visits to international sites are all highlighted in this semiannual journal. Focus on EM programs in this issue is on international collaboration in vitrification projects. Technology highlights covers: in situ sealing for contaminated sites; and remote sensors for toxic pollutants. Section on profiles of countries includes: Arctic contamination by the former Soviet Union, and EM activities with Germany--cooperative arrangements.

  20. SOLAR COOKER UTILIZING SATELLITE DISH TECHNOLOGY Mechanical Engineering Department , Philadelphia University, Amman Jordan, e-mail

    E-Print Network [OSTI]

    SOLAR COOKER UTILIZING SATELLITE DISH TECHNOLOGY A. Saleh1 A. Badran2 1 Mechanical Engineering dish­type solar cooker was built and tested utilizing satellite dish technology. A common satellite-TV dish was utilized as a solar cooker after covering it with a highly­reflective aluminum foil, which

  1. 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

  2. International Programs in Agriculture

    E-Print Network [OSTI]

    International Programs in Agriculture MessagefromtheDirector­ Staying Ahead of Globalization and more prosperous place for all. Fortunately, Purdue International Programs in Agriculture (IPIA) has natural disasters caution us to remember the power of nature. The United Nations Food and Agriculture

  3. Internal Turing Machines

    E-Print Network [OSTI]

    Ken Loo

    2004-07-28T23:59:59.000Z

    Using nonstandard analysis, we will extend the classical Turing machines into the internal Turing machines. The internal Turing machines have the capability to work with infinite ($*$-finite) number of bits while keeping the finite combinatoric structures of the classical Turing machines. We will show the following. The internal deterministic Turing machines can do in $*$-polynomial time what a classical deterministic Turing machine can do in an arbitrary finite amount of time. Given an element of $\\in HALT$ (more precisely, the $*$-embedding of $HALT$), there is an internal deterministic Turing machine which will take $$ as input and halt in the $"yes"$ state. The language ${}^*Halt$ can not be decided by the internal deterministic Turing machines. The internal deterministic Turing machines can be viewed as the asymptotic behavior of finite precision approximation to real number computations. It is possible to use the internal probabilistic Turing machines to simulate finite state quantum mechanics with infinite precision. This simulation suggests that no information can be transmitted instantaneously and at the same time, the Turing machine model can simulate instantaneous collapse of the wave function. The internal deterministic Turing machines are powerful, but if $P \

  4. Conference Proceedings International Conference

    E-Print Network [OSTI]

    Hemmers, Oliver

    Conference Proceedings 10th International Conference on Hand-Arm Vibration 7-11 June 2004 Flamingo related to HAVS. The published proceedings from these conferences have become blueprints for assessing, the entertainment capital of the world: The 10th International Hand-Arm Vibration Conference will be the second time

  5. Blue Award 2012 International

    E-Print Network [OSTI]

    Blue Award 2012 · International Student Competition for Sustainable Architecture Sign in: www.blueaward.at Blue Award 2012 · International Student Competition for Sustainable Architecture Organizers Vienna blueaward.at Organizers Vienna University of Technology Department for Spatial and Sustainable Design

  6. International Conference on

    E-Print Network [OSTI]

    Zevenhoven, Ron

    of energy systems; 5.Refrigeration & air conditioning; Heat pumps; 6.Fuel cells; 7.Biomass / biofuels; bio E C o S 2 0 JuNE 15-19 27th International Conference on Efficiency, Cost, 1 4 Optimization International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy

  7. Students' Perceptions of International Agriculture After an International Agricultural Experience 

    E-Print Network [OSTI]

    Miller, Kasey Lynn

    2012-02-14T23:59:59.000Z

    /schedule, language, safety and health, and time away from home; finally, benefits included experience in international agriculture and natural resources, culture, international travel, global perspective, and education. This study found that international agriculture...

  8. Sustainable Development Summer Intern Report 2013 Sustainable Development Summer Intern

    E-Print Network [OSTI]

    Sustainable Development Summer Intern Report 2013 Sustainable Development Summer Intern Final amongst university's invested in sustainable development. Our small but mighty size allows us to build through positive sustainable practices. As the Sustainable Development Summer Intern I am fortunate enough

  9. Sustainable Development Summer Intern Report 2010 Sustainable Development Summer Intern

    E-Print Network [OSTI]

    Sustainable Development Summer Intern Report 2010 1 Sustainable Development Summer Intern Final of Bishop's University. The role of the Sustainable Development Summer Intern (SDSI) is to coordinate and organize sustainable development information and activities during the summer months. Ensuring

  10. INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP

    E-Print Network [OSTI]

    space exploration infrastructure standards facilitating interoperability through an international with relevant existing international working groups/ organisations. · Preparation and Organization of a WS1 INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP WORKPLAN Update following 3rd ISECG Meeting

  11. Irregular Satellites of the Planets: Products of Capture in the Early Solar System

    E-Print Network [OSTI]

    David Jewitt; Nader Haghighipour

    2007-03-03T23:59:59.000Z

    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.

  12. Enhancement of satellite precipitation estimation via unsupervised dimensionality reduction

    SciTech Connect (OSTI)

    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

    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.

  13. Satellite remote sensing for hydrology and water management

    SciTech Connect (OSTI)

    Barrett, E.C.; Power, C.H. (Univ. of Bristol (GB)); Micallef, A. (Univ. of Malta, Valletta (IT)); Voute, C. (International Inst. for Aerospace Survey and Earth Sciences, Enschede (NL))

    1990-01-01T23:59:59.000Z

    Interest in satellite remote sensing is fast moving away from pure science and individual case studies towards truly operational applications. At the same time the micro-computer revolution is ensuring that data reception and processing facilities need no longer be the preserve of a small number of global centers, but can be common-place installations in smaller countries and even local regional agency offices or laboratories. As remote sensing matures, and its applications proliferate, a new type of treatment is required to ensure both that decision makers, managers and engineers with problems to solve are informed of today's opportunities and that scientists are provided with integrated overviews of the ever-growing need for their services. This book addresses these needs uniquely focusing on the area bounded by satellite remote sensing, pure and applied hydrological sciences, and a specific world region, namely the Mediterranean basin.

  14. International energy annual 1996

    SciTech Connect (OSTI)

    NONE

    1998-02-01T23:59:59.000Z

    The International Energy Annual presents an overview of key international energy trends for production, consumption, imports, and exports of primary energy commodities in over 220 countries, dependencies, and areas of special sovereignty. Also included are population and gross domestic product data, as well as prices for crude oil and petroleum products in selected countries. Renewable energy reported in the International Energy Annual includes hydroelectric power, geothermal, solar, and wind electric power, biofuels energy for the US, and biofuels electric power for Brazil. New in the 1996 edition are estimates of carbon dioxide emissions from the consumption of petroleum and coal, and the consumption and flaring of natural gas. 72 tabs.

  15. Toshiba recommends Windows 7 Satellite L750-12T

    E-Print Network [OSTI]

    Saskatchewan, University of

    Toshiba recommends Windows 7 Model: i Satellite L750-12T 2nd Generation Intel® CoreTM i3-2350M processor­ 2.3 GHz, Genuine Windows® 7 Home Premium, 15.6" HD LCD, 4GB DDR3, 640GB HDD S-ATA, DVD Super and Enhanced Intel® SpeedStep® Technology Operating System Genuine Windows® 7 Home Premium Key Features Toshiba

  16. Dynamic characterization of satellite components through non-invasive methods

    SciTech Connect (OSTI)

    Mullins, Joshua G [Los Alamos National Laboratory; Wiest, Heather K [Los Alamos National Laboratory; Mascarenas, David D. L. [Los Alamos National Laboratory; Macknelly, David [INST-OFF/AWE; Park, Gyuhae [Los Alamos National Laboratory

    2010-10-21T23:59:59.000Z

    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. This 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 a 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 modelling, 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.

  17. international | netl.doe.gov

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

    International Activity in Gasification and Coal to Liquids Development News Gasifipedia Coal-Biomass Feed Advanced Fuels Synthesis Systems Analyses International Activity Project...

  18. INTERNATIONAL PACIFIC RESEARCH CENTER

    E-Print Network [OSTI]

    Wang, Yuqing

    INTERNATIONAL PACIFIC RESEARCH CENTER APRIL 2004­MARCH 2005 REPORT SCHOOL OF OCEAN AND EARTH RESEARCH HIGHLIGHTS Indo-Pacific Ocean Climate Pacific Research Center Design by: Susan Yamamoto Printed by: Hagadone Printing Company Photo: Waikiki

  19. CSU Office of International

    E-Print Network [OSTI]

    CSU Office of International Programs - Education Abroad Program Types Currently 750 programs on the OIP Education Abroad website. CSU, through Division of Continuing Education/ Online Education Abroad website. Transfer Semester, year & possibly summer CSU tuition and fees (All other fees

  20. International petroleum statistics report

    SciTech Connect (OSTI)

    NONE

    1996-03-01T23:59:59.000Z

    This report presents data on international oil production, demand, imports, exports, and stocks. World oil production and OECD demand data are for the years 1970 through 1994; OECD stocks from 1973 through 1994; and OECD trade from 1984 through 1994.

  1. Essays on International Economics

    E-Print Network [OSTI]

    Cravino, Javier Pablo

    2013-01-01T23:59:59.000Z

    Journal of International Economics, Vol. 65, 375–99. [33]Journal of Monetary Economics, Vol. 51, No. 1, pp. 1–32. [Trade”, Journal of Monetary Economics, Vol. 54, No. 6, pp.

  2. Formula Hybrid International Competition

    E-Print Network [OSTI]

    Carver, Jeffrey C.

    torque at low speeds than do internal combustion engines, a hybrid could offer competitive advantages with a traditional combustion engine into a hybrid vehicle, overcoming numerous technical challenges along the way

  3. International Studies Degree

    E-Print Network [OSTI]

    Moore, Paul A.

    Attorney Simpson Moncif Law, LLC Customer Service Representative Schindler Elevator Corporation Director Insurance Logistics Account Executive Total Quality Logistics, Inc. Manager of Strategic Planning Eaton Corporation Self-employed/Business Owner Indy Associates, Original Impulse Senior Associate International

  4. International Programs in Agriculture

    E-Print Network [OSTI]

    have any questions or comments. Jess Lowenberg-DeBoer Associate Dean and Director of International husband Luc and son LĂ©once, moved to Kansas for their new venture in farming; and to Corey Kujawa who left

  5. POLITECNICO DI MILANO Progetto e sviluppo di sistemi di elaborazione nel campo del telerilevamento da satellite e della

    E-Print Network [OSTI]

    telerilevamento da satellite e della prospezione geofisica; Progetto e sviluppo di soluzioni hardware e software

  6. International Energy Agency

    Broader source: Energy.gov [DOE]

    DOE's market transformation efforts have reached to European and other countries who are part of the international distributed and decentralized energy community. Through its partnership with DOE, the combined heat and power (CHP) program of the International Energy Agency (IEA) conducts research and analysis of CHP markets and deployment efforts around the world and has used lessons learned from U.S. research, development, and deployment efforts to recommend market transformation activities and policies that will lead to new CHP installations worldwide.

  7. SWAT Goes International

    E-Print Network [OSTI]

    Wythe, Kathy

    2007-01-01T23:59:59.000Z

    #1; tx H2O | pg. 18 International researchers and program managers in 90 countries around the world use the Soil and Water Assessment Tool (SWAT) model. Germany, the first country interested in SWAT, uses it to model its large watersheds, said... issues and used SWAT to help assess watersheds and transboundary water issues of the 15-country union, increasing the use of the modeling tool throughout Europe. The U.S. Agency for International Development funded a research project for the Kenyan...

  8. Wood Resources International

    E-Print Network [OSTI]

    .3% Sweden 5.3% Finland 4.1% Russia 13.8% US 37.3% Germany 3.3% France 2.8% Poland 2.1% Other Europe 14 International Wood Fuel Removals in Europe 2002 Turkey 12.2% Poland 3.6% Romania 5.3% Hungary 4.1% Germany 7;Wood Resources International Production of energy from wood fuels in 2000 Source: EUBIONET 0 50 100 150

  9. Weighing international ESCO opportunities

    SciTech Connect (OSTI)

    Smith, D.O.

    1997-06-01T23:59:59.000Z

    The decision to expand into an international market is not an easy one. There are many things to consider. It`s probably an even tougher decision for our type business, energy efficiency Performance Contracting, than most because the ESCO business is so complex and carries a considerable amount of project risks which can be considerably magnified in an international setting. The author presents five areas which need to be addressed in making the decision to pursue the international market. (1) Is the international market worth pursuing? (2) Is your company ready to go international? Can your company handle an international venture in stride without disrupting your domestic business plans? (3) Can you afford it financially? What is the risk? (4) Evaluation of target countries. (5) What about a local partner? What will be the roles of you and your prospective partner, both now and long term? What value will your company continue to bring over the years to assure a successful long term business relationship, not just a short term technology transfer?

  10. The NASA Aura satellite houses four instruments to study atmospheric ozone. The Ozone Monitoring Instrument (OMI) onboard the satellite provides global total column ozone (TCO) and in combination

    E-Print Network [OSTI]

    Thompson, Anne

    iii ABSTRACT The NASA Aura satellite houses four instruments to study atmospheric ozone. The Ozone Monitoring Instrument (OMI) onboard the satellite provides global total column ozone (TCO) and in combination with other instruments tropospheric ozone residual (TOR) can be derived. In this study, the trajectory

  11. Effect of One-Dimensional Field Data Assimilation on Land Surface Model Flux Estimates with Implications

    E-Print Network [OSTI]

    Walker, Jeff

    .W. Western1 1 Department of Civil and Environmental Engineering, The University of Melbourne, Victoria, Australia 2 CSIRO Marine and Atmospheric Research, Aspendale, Victoria, Australia Email: r Model (CBM) represent the exchange of energy and water between the earth's surface and lower atmosphere

  12. Estimation of land surface water and energy balance flux components and closure relation using conditional sampling

    E-Print Network [OSTI]

    Farhadi, Leila

    2012-01-01T23:59:59.000Z

    Models of terrestrial water and energy balance include numerical treatment of heat and moisture diffusion in the soil-vegetation-atmosphere continuum. These two diffusion and exchange processes are linked only at a few ...

  13. Quantifying the thermodynamic entropy budget of the land surface: is this useful?

    E-Print Network [OSTI]

    Brunsell, Nathaniel A.; Schymanski, S.J.; Kleidon, A.

    2011-06-20T23:59:59.000Z

    processes in the system. Latent heat transfer fundamentally couples the biosphere and the atmosphere as well as the mass and energy cycles as- sociated with surface-atmosphere transfer processes. Wang et al. (2007) suggested that vegetation attempts... that the role of vegetation is to increase the entropy production by altering the absorption of solar radiation and decreasing sur- face temperature. At the same time, vegetation increases the entropy transfer associated with the latent heat flux. This dy- namic...

  14. A continuous satellitederived global record of land surface evapotranspiration from 1983 to 2006

    E-Print Network [OSTI]

    Montana, University of

    using advanced very high resolution radiometer (AVHRR) GIMMS NDVI, NCEP/NCAR Reanalysis (NNR) daily climatologies, terrestrial water, and energy budgets and longterm water cycle changes. Citation: Zhang, K., J. S a critical link between terrestrial water, carbon, and surface energy exchanges. The world has experienced

  15. Retrieving snow mass from GRACE terrestrial water storage change with a land surface model

    E-Print Network [OSTI]

    Yang, Zong-Liang

    by the Advanced Very High Resolution Radio- meter (AVHRR) is decreasing since middle 1980s in response to global are variations in surface albedo and surface energy budgets, sensible heat and water vapor fluxes-chan- nel Microwave Radiometer (SMMR) and the Advanced Microwave Scanning Radiometer (AMSR) provide a capa

  16. Evaluation of MERRA Land Surface Estimates in Preparation for the Soil Moisture Active Passive Mission

    E-Print Network [OSTI]

    Montana, University of

    Scanning Radiometer for Earth Observing System (EOS) (AMSR-E)] remote sensing and earlier generation.001) in the midlatitudes, where its accuracy is directly proportional to the quality of MERRA precipitation. In the high products) to define biophysical attri- butes and water, mass, and energy exchanges (e.g., Running et al

  17. Multiobjective calibration and sensitivity of a distributed land surface water and energy balance model

    E-Print Network [OSTI]

    Houser, Paul R; Gupta, Hoshin V; Shuttleworth, W. James; Famiglietti, James S

    2001-01-01T23:59:59.000Z

    identification and energy balance models on a tallgrassdata for surface energy balance evaluation of a semiaridWatershed. We are energy balance components over a semiarid

  18. A validation of heat and carbon fluxes from highresolution land surface and regional models

    E-Print Network [OSTI]

    D'Andrea, Fabio

    ) or regional climate models (RCMs) [Alessandri et al., 2007; Steiner et al., 2009]. [3., 2006; Alessandri et al., 2007; Jarlan et al., 2008; Steiner et al., 2009]. However, the SVAT models models do not account for the role of terrestrial vegetation in the carbon cycle variability [Alessandri

  19. Analysis of process controls in land surface hydrological cycle over the continental United States

    E-Print Network [OSTI]

    Syed, Tajdarul Hassan; Lakshimi, V; Paleologos, E; Lohmann, D; Mitchell, K; Famiglietti, J S

    2004-01-01T23:59:59.000Z

    2004), Analysis of process controls in land surfacelack of understanding of the process controls in the surfacehydrologic cycle and the process controls can lead us to a

  20. Modeling land surface processes of the midwestern United States : predicting soil moisture under a warmer climate

    E-Print Network [OSTI]

    Winter, Jonathan (Jonathan Mark)

    2010-01-01T23:59:59.000Z

    This dissertation seeks to quantify the response of soil moisture to climate change in the midwestern United States. To assess this response, a dynamic global vegetation model, Integrated Biosphere Simulator, was coupled ...

  1. Coupled heat and vapor transport: The thermostat effect of a freely evaporating land surface

    E-Print Network [OSTI]

    Szilagyi, Jozsef

    Szilagyi1,2 and Aaron Schepers3 1 Department of Hydraulic and Water Resources Engineering, Budapest problems across a variety of disciplines [Kunsch, 1998; Szilagyi and Jozsa, 2009a, 2009b; Bhat et al., 2011

  2. Use of the Richards equation in land surface parameterizations Deborah H. Lee1

    E-Print Network [OSTI]

    equation, and an analytical kinematic wave solution of Richards equation. Comparisons show that depth

  3. Sensitivity, uncertainty and time dependence of parameters in a complex land surface model

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    and for the entire year. Two criteria were used to evaluate the success of the simulations; the first evaluated the ability of SiB2.5 to simulate LE and H, the second included NEE as an additional constraint. The best-performing author. Tel.: +970-491-1964; fax: +970-491-1965. E-mail address: lara@nrel.colostate.edu (L. Prihodko

  4. Infrared Land Surface Emissivity in the Vicinity of the ARM SGP Central Facility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other News link toInfluence ofQuickdegreeInfrared Land

  5. Assessor Training Internal Audits and

    E-Print Network [OSTI]

    NVLAP Assessor Training Internal Audits and Management Reviews #12;Assessor Training 2009, quarterly, etc., schedule throughout the year #12;Assessor Training 2009: Internal Audits and Management a copy of the full internal audit schedule. #12;Assessor Training 2009: Internal Audits and Management

  6. STEP Intern Reference Check Sheet

    Broader source: Energy.gov [DOE]

    STEP Intern Reference Check Sheet, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  7. PROGRAMME AT A GLANCE 4th AMMA international Conference 2 6 July 2012, ICC, Toulouse, France

    E-Print Network [OSTI]

    break Coffee break 2A Vulnerability and adaptation II : Agriculture 2B Monsoon system: Climate II variability and predictability II 6B CMIP5 II : Climate change 6D Monsoon system: Land surface processes Introduction and Institutional talks Organization Society Environment Climate Interactions African

  8. International energy outlook 1994

    SciTech Connect (OSTI)

    Not Available

    1994-07-01T23:59:59.000Z

    The International Energy Outlook 1994 (IEO94) presents an assessment by the Energy Information Administration (EIA) of the outlook for international energy markets between 1990 and 2010. The report is provided as a statistical service to assist energy managers and analysts, both in government and in the private sector. These forecasts are used by international agencies, Federal and State governments, trade associations, and other planners and decisionmakers. They are published pursuant to the Depart. of Energy Organization Act of 1977 (Public Law 95-91), Section 205(c). The IEO94 projections are based on US and foreign government policies in effect on October 1, 1993-which means that provisions of the Climate Change Action Plan unveiled by the Administration in mid-October are not reflected by the US projections.

  9. International energy strategies

    SciTech Connect (OSTI)

    Dunkerley, J. (ed.)

    1980-01-01T23:59:59.000Z

    The sharp rise in oil prices and the embargo of 1973 to 1974 stimulated a growing interest in international energy questions. One indicator of this interest was the decision in late 1977 to establish an International Association of Energy Economists (IAEE). In 1979 the officers of the IAEE proposed to hold not only an initial annual meeting of the association, but also a two-day Conference on International Energy Issues. Resources for the Future, a Washington-based independent research institute, was asked to cosponsor the two-day conference. These two meetings were held in Washington, DC, on June 4, 5, and 6, 1979. This volume contains the 34 papers of the proceedings, and a separate abstract was prepared for each paper for Energy Abstracts for Policy Analysis (EAPA); 13 papers were selected for Energy Research Abstracts (ERA).

  10. International energy annual 1997

    SciTech Connect (OSTI)

    NONE

    1999-04-01T23:59:59.000Z

    The International Energy Annual presents an overview of key international energy trends for production, consumption, imports, and exports of primary energy commodities in over 220 countries, dependencies, and areas of special sovereignty. Also included are population and gross domestic product data, as well as prices for crude oil and petroleum products in selected countries. Renewable energy reported in the International Energy Annual includes hydroelectric power and geothermal, solar, and wind electric power. Also included are biomass electric power for Brazil and the US, and biomass, geothermal, and solar energy produced in the US and not used for electricity generation. This report is published to keep the public and other interested parties fully informed of primary energy supplies on a global basis. The data presented have been largely derived from published sources. The data have been converted to units of measurement and thermal values (Appendices E and F) familiar to the American public. 93 tabs.

  11. Monte Carlo Simulations of Macho Parallaxes From a Satellite

    E-Print Network [OSTI]

    Thomas Boutreux; Andrew Gould

    1995-07-25T23:59:59.000Z

    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.

  12. Water Ice on the Satellite of Kuiper Belt Object 2003 EL61

    E-Print Network [OSTI]

    K. M Barkume; M. E. Brown; E. L. Schaller

    2006-01-24T23:59:59.000Z

    We have obtained a near infrared spectrum of the brightest satellite of the large Kuiper Belt Object, 2003 EL61. The spectrum has absorption features at 1.5 and 2.0 microns, indicating that water ice is present on the surface. We find that the satellite's absorption lines are much deeper than water ice features typically found on Kuiper Belt Objects. We argue that the unusual spectrum indicates that the satellite was likely formed by impact and not by capture.

  13. SpaceWire model development technology for satellite architecture.

    SciTech Connect (OSTI)

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

    2011-09-01T23:59:59.000Z

    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.

  14. Production process for advanced space satellite system cables/interconnects.

    SciTech Connect (OSTI)

    Mendoza, Luis A.

    2007-12-01T23:59:59.000Z

    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.

  15. Satellite image analysis for surveillance, vegetation and climate change

    SciTech Connect (OSTI)

    Cai, D Michael [Los Alamos National Laboratory

    2011-01-18T23:59:59.000Z

    Recently, many studies have provided abundant evidence to show the trend of tree mortality is increasing in many regions, and the cause of tree mortality is associated with drought, insect outbreak, or fire. Unfortunately, there is no current capability available to monitor vegetation changes, and correlate and predict tree mortality with CO{sub 2} change, and climate change on the global scale. Different survey platforms (methods) have been used for forest management. Typical ground-based forest surveys measure tree stem diameter, species, and alive or dead. The measurements are low-tech and time consuming, but the sample sizes are large, running into millions of trees, covering large areas, and spanning many years. These field surveys provide powerful ground validation for other survey methods such as photo survey, helicopter GPS survey, and aerial overview survey. The satellite imagery has much larger coverage. It is easier to tile the different images together, and more important, the spatial resolution has been improved such that close to or even higher than aerial survey platforms. Today, the remote sensing satellite data have reached sub-meter spatial resolution for panchromatic channels (IKONOS 2: 1 m; Quickbird-2: 0.61 m; Worldview-2: 0.5 m) and meter spatial resolution for multi-spectral channels (IKONOS 2: 4 meter; Quickbird-2: 2.44 m; Worldview-2: 2 m). Therefore, high resolution satellite imagery can allow foresters to discern individual trees. This vital information should allow us to quantify physiological states of trees, e.g. healthy or dead, shape and size of tree crowns, as well as species and functional compositions of trees. This is a powerful data resource, however, due to the vast amount of the data collected daily, it is impossible for human analysts to review the imagery in detail to identify the vital biodiversity information. Thus, in this talk, we will discuss the opportunities and challenges to use high resolution satellite imagery and machine learning theory to monitor tree mortality at the level of individual trees.

  16. Assessment of a satellite power system and six alternative technologies

    SciTech Connect (OSTI)

    Wolsko, T.; Whitfield, R.; Samsa, M.; Habegger, L.S.; Levine, E.; Tanzman, E.

    1981-04-01T23:59:59.000Z

    The satellite power system is assessed in comparison to six alternative technologies. The alternatives are: central-station terrestrial photovoltaic systems, conventional coal-fired power plants, coal-gasification/combined-cycle power plants, light water reactor power plants, liquid-metal fast-breeder reactors, and fusion. The comparison is made regarding issues of cost and performance, health and safety, environmental effects, resources, socio-economic factors, and insitutional issues. The criteria for selecting the issues and the alternative technologies are given, and the methodology of the comparison is discussed. Brief descriptions of each of the technologies considered are included. (LEW)

  17. When can the Planck satellite measure spectral index running?

    E-Print Network [OSTI]

    Cédric Pahud; Andrew R. Liddle; Pia Mukherjee; David Parkinson

    2007-09-04T23:59:59.000Z

    We use model selection forecasting to assess the ability of the Planck satellite to make a positive detection of spectral index running. We simulate Planck data for a range of assumed cosmological parameter values, and carry out a three-way Bayesian model comparison of a Harrison-Zel'dovich model, a power-law model, and a model including running. We find that Planck will be able to strongly support running only if its true value satisfies |dn/d ln k| > 0.02.

  18. Laser beaming demonstrations to high-orbit satellites

    SciTech Connect (OSTI)

    Lipinski, R.J.; Meister, D.C.; Tucker, S. [and others

    1993-12-31T23:59:59.000Z

    Laser power beaming to satellites and orbital transfer vehicles requires the accurate pointing of a low-divergence laser beam to its target, whether the target is in the sunlight or the earth`s shadow. The Air Force Phillips Laboratory (AFPL) has demonstrated reduction in the image size of stars by a factor of 10 or more by using laser beacons and adaptive optics for atmospheric compensation. This same technology is applicable to reducing the divergence of laser beams propagated from earth to space. A team of Phillips Laboratory, COMSAT Laboratories, and Sandia National Laboratories plans to demonstrate the state of the art in this area with laser-beaming demonstrations to high-orbit satellites. The demonstrations will utilize the 1.5-m diameter telescope with adaptive optics at the AFPL Starfire Optical Range (SOR) and a ruby laser provided by the Air Force and Sandia (1--50 kill and 6 ms at 694.3 nm). The first targets will be corner-cube retro-reflectors left on the moon by the Apollo 11, 14, and 15 landings. We will attempt to use adaptive optics for atmospheric compensation to demonstrate accurate and reliable beam projection with a series of shots over a span of time and shot angle. We will utilize the return signal from the retro-reflectors to help determine the beam diameter on the moon and the variations in pointing accuracy caused by atmospheric tilt. This will be especially challenging because the retro-reflectors will need to be in the lunar shadow to allow detection over background light. If the results from this experiment are encouraging, we will at a later date direct the beam at a COMSAT satellite in geosynchronous orbit as it goes into the shadow of the earth. We will utilize an onboard monitor to measure the current generated in the solar panels on the satellite while the beam is present. A threshold irradiance of about 4 W/m{sup 2} on orbit is needed for this demonstration.

  19. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

    Robin Gordon; Bill Bruce; Nancy Porter; Mike Sullivan; Chris Neary

    2003-05-01T23:59:59.000Z

    The two broad categories of deposited weld metal repair and fiber-reinforced composite repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repairs and for fiber-reinforced composite repair. To date, all of the experimental work pertaining to the evaluation of potential repair methods has focused on fiber-reinforced composite repairs. Hydrostatic testing was also conducted on four pipeline sections with simulated corrosion damage: two with composite liners and two without.

  20. International petroleum statistics report

    SciTech Connect (OSTI)

    Not Available

    1994-12-01T23:59:59.000Z

    This document is a monthly publication that provides current international oil data. The Report presents data on international oil production, demand, imports, exports, and stocks. Section 1 contains time series data on world oil production, and on oil demand and stocks in the OECD. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. Section 4 presents annual time series data on world oil production and oil stocks, demand and trade in OECD countries.

  1. 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...

  2. assessing satellite-based fire: Topics by E-print Network

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

    Radiation Budget (SRB) project updated its Perez, Richard R. 2 SATELLITE-BASED SOLAR RESOURCE ASSESSMENT: SOCIAL, ECONOMIC AND CULTURAL CHALLENGES AND BARRIERS, Renewable...

  3. A multiobjective, multidisciplinary design optimization methodology for the conceptual design of distributed satellite systems

    E-Print Network [OSTI]

    Jilla, Cyrus D., 1974-

    2002-01-01T23:59:59.000Z

    A multiobjective, multidisciplinary design optimization methodology for mathematically modeling the distributed satellite system (DSS) conceptual design problem as an optimization problem has been developed to advance the ...

  4. Uncertainty for Satellite and Station Solar Data in the Updated NSRDB

    SciTech Connect (OSTI)

    Myers, D. R.

    2008-10-29T23:59:59.000Z

    Solar Resource Assessment Workshop, Denver CO, Oct 29, 2008 presentation: Uncertainty for Satellite and Station Solar Data in the Updated NSRDB,

  5. Geography 169: Satellite Remote Sensing and Imaging GIS (2035B Public Policy) Instructor: Laurence C. Smith lsmith@geog.ucla.edu (office hours Wed. 3:00-5:00, 1167 Bunche)

    E-Print Network [OSTI]

    , with applications to land surface change, environmental monitoring, oceanography, meteorology, and many other fields Rolfe) Week 2: T: Electromagnetic principles (Ch. 1-2) Th: Multi-spectral remote sensing systems (Ch. 7, infrared, and microwave range of the electromagnetic spectrum are covered. Labs are taught using ENVI

  6. Geography 169: Satellite Remote Sensing and Imaging GIS (2035B Public Policy) Instructor: Laurence C. Smith lsmith@geog.ucla.edu (office hours Monday 1-2:00, 1127A

    E-Print Network [OSTI]

    to land surface change, environmental monitoring, oceanography, meteorology, and many other fields. Laser: T: Electromagnetic principles (Ch. 1-2) Th: Multi-spectral remote sensing systems (Ch. 7) Week 3: T, and microwave range of the electromagnetic spectrum are covered. Labs are taught using ENVI software, in the SSC

  7. Internal Control Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-10-28T23:59:59.000Z

    To ensure sound internal controls and overall consistency in exercising the statutory authorities that vest in the Secretary, the Administrator, National Nuclear Security Administration (NNSA), and Department's Chief Financial Officer (CFO), and to implement the Federal Managers' Financial Integrity Act of 1982 and related central agency guidance. Cancels DOE O 413.1A.

  8. International Student Guide

    E-Print Network [OSTI]

    International Student Guide #12;#12;Contents Measures of Quality ...................... 2 No matter Undergraduate programs of study: 250+ majors, minors and concentrations Graduate majors: 100+ Total enrollment-track faculty with doctorate/terminal degrees: 99% 1 #12;Measures of Quality To learn more about Colorado State

  9. Global Network International Relations

    E-Print Network [OSTI]

    Takada, Shoji

    on "Challenges in Organic Materials and Supramolecular Chemistry." The symposium was co-hosted by the Royal twenty-six talks by leading experts in the fields of porous, self-assembled and organic materials; supramolecular chemistry; and sensing and imaging. The 10th International Symposia on Advancing the Chemical

  10. admission guide International

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Networks Computer Science Computer Science: Computer Game Design Electrical Engineering Communications2015/ 2016 admission guide International First-Year Students #12;2 3 WORLDWIDE RECOGNITION (2008, Science Watch) (2007, Science Watch) (2013, Times Higher Education World University Rankings) (2014, Times

  11. International Pacific Research Center

    E-Print Network [OSTI]

    Wang, Yuqing

    International Pacific Research Center APRIL 2007­MARCH 2008 REPORT School of Ocean and Earth Center i Foreword ii iv Indo-Pacific Ocean Climate 1 Regional-Ocean Influences 13 Asian by the following broad research themes and goals of the IPRC Science Plan. Indo-Pacific Ocean Climate

  12. INTERNATIONAL PACIFIC RESEARCH CENTER

    E-Print Network [OSTI]

    Wang, Yuqing

    INTERNATIONAL PACIFIC RESEARCH CENTER APRIL 2005­MARCH 2006 REPORT SCHOOL OF OCEAN AND EARTH Center 1 The Year's Highlights 3 Indo-Pacific Ocean Climate 4 Regional-Ocean Influences 10 Asian Ocean Climate: To understand climate variations in the Pacific and Indian oceans on interannual

  13. INTERNATIONAL PACIFIC RESEARCH CENTER

    E-Print Network [OSTI]

    Wang, Yuqing

    INTERNATIONAL PACIFIC RESEARCH CENTER Annual Report April 2006 ­ March 2007 School of Ocean Research Center 1 2 The Year's Highlights 3 Research Accomplishments Indo-Pacific Ocean Climate 4 Regional-Ocean Ocean Climate: To understand climate variations in the Pacific and Indian oceans on inter- annual

  14. International energy outlook 1996

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    This International Energy Outlook presents historical data from 1970 to 1993 and EIA`s projections of energy consumption and carbon emissions through 2015 for 6 country groups. Prospects for individual fuels are discussed. Summary tables of the IEO96 world energy consumption, oil production, and carbon emissions projections are provided in Appendix A. The reference case projections of total foreign energy consumption and of natural gas, coal, and renewable energy were prepared using EIA`s World Energy Projection System (WEPS) model. Reference case projections of foreign oil production and consumption were prepared using the International Energy Module of the National Energy Modeling System (NEMS). Nuclear consumption projections were derived from the International Nuclear Model, PC Version (PC-INM). Alternatively, nuclear capacity projections were developed using two methods: the lower reference case projections were based on analysts` knowledge of the nuclear programs in different countries; the upper reference case was generated by the World Integrated Nuclear Evaluation System (WINES)--a demand-driven model. In addition, the NEMS Coal Export Submodule (CES) was used to derive flows in international coal trade. As noted above, foreign projections of electricity demand are now projected as part of the WEPS. 64 figs., 62 tabs.

  15. Requirements for Xenon International

    SciTech Connect (OSTI)

    Hayes, James C.; Ely, James H.

    2013-09-26T23:59:59.000Z

    This document defines the requirements for the new Xenon International radioxenon system. The output of this project will be a Pacific Northwest National Laboratory (PNNL) developed prototype and a manufacturer-developed production prototype. The two prototypes are intended to be as close to matching as possible; this will be facilitated by overlapping development cycles and open communication between PNNL and the manufacturer.

  16. Land-atmosphere interactions in an high resolution atmospheric simulation coupled with a surface data assimilation scheme

    E-Print Network [OSTI]

    Entekhabi, Dara

    A valid tool for the retrieving of the turbulent fluxes that characterize the surface energy budget is constituted by the remote sensing of land surface states. In this study sequences of satellite-derived observations ...

  17. area northern italy: Topics by E-print Network

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

    since the Blling. Andreas G. Heiss; Werner Kofler; Klaus Oeggl 2005-01-01 31 Evaluation of Land Surface Models in Reproducing Satellite Derived Leaf Area Index over the...

  18. Gravitational quantization of satellite orbits in the giant planets

    E-Print Network [OSTI]

    Geroyannis, Vassilis S

    2014-01-01T23:59:59.000Z

    A fundamental assumption in the so-called "global polytropic model" is global hydrostatic equilibrium for a system of planets or statellites. In the framework of the polytropic models and the induced (by hydrostatic equilibrium) Lane-Emden differential equation, a polytropic sphere of polytropic index $n$ and radius $R_1$ represents the central component $S_1$(star or planet) of a polytropic configuration, of which further components are the polytropic spherical shells $S_2$, $S_3$, ..., defined by the pairs of radii $(R_1,\\,R_2)$, $(R_2,\\,R_3)$, ..., where $R_1,\\,R_2,\\,R_3$, ..., are the roots of the real part $\\mathrm{Re}(\\theta)$ of the complex Lane-Emden function $\\theta$. Such shells are appropriate places for accomodating planets or satellites. The Lane-Emden equation is solved by the Fortran code DCRKF54, which can integrate complex initial value problems along complex paths. In the present study, we treat numerically the systems of satellites of the giant planets: Jupiter, Saturn, Uranus, and Neptune.

  19. Dielectronic satellite spectra of hydrogen-like titanium (Ti XXII)

    SciTech Connect (OSTI)

    Bitter, M.; von Goeler, S.; Cohen, S.; Hill, K.W.; Sesnic, S.; Tenney, F.; Timberlake, J.; Safronova, U.I.; Vainshtein, L.A.; Dubau, J.

    1983-07-01T23:59:59.000Z

    High resolution spectra of the Ly ..cap alpha../sub 1/ and Ly ..cap alpha../sub 2/ lines of hydrogenlike titanium, TiXXII, and the associated dielectronic satellites which are due to transitions 1snl-2pnl with n greater than or equal to 2, have been observed from tokamak discharges with auxiliary ion cyclotron heating (ICRH) with central electron temperatures of 2 keV and central electron densities of 8 x 10/sup 13/ cm/sup -3/ on the Princeton Large Torus (PLT). The data have been used for a detailed comparison with theoretical predictions based on the Z - expansion method and Hartree - Fock calculations. The results obtained with the Z - expansion method are in excellent agreement with the observed spectral data except for minor discrepancies between the theoretical and experimental wavelengths of 0.0003 A for the n = 2 satellites and of 0.0001 A for the separation of the Ly ..cap alpha../sub 1/ and Ly ..cap alpha../sub 2/ lines. Very good agreement with the experimental data is also obtained for the results from the Hartree - Fock calculations though somewhat larger discrepancies (approx. = 0.0009 A) exist between experimental and theoretical wavelengths which are systematically too small. The observed spectra are used for diagnosis of the central ion and electron temperatures of the PLT discharges and for a measurement of the dielectronic recombination rate coefficient of TiXXII.

  20. Autonomous, agile micro-satellites and supporting technologies

    SciTech Connect (OSTI)

    Breitfeller, E; Dittman, M D; Gaughan, R J; Jones, M S; Kordas, J F; Ledebuhr, A G; Ng, L C; Whitehead, J C; Wilson, B

    1999-07-19T23:59:59.000Z

    This paper updates the on-going effort at Lawrence Livermore National Laboratory to develop autonomous, agile micro-satellites (MicroSats). The objective of this development effort is to develop MicroSats weighing only a few tens of kilograms, that are able to autonomously perform precision maneuvers and can be used telerobotically in a variety of mission modes. The required capabilities include satellite rendezvous, inspection, proximity-operations, docking, and servicing. The MicroSat carries an integrated proximity-operations sensor-suite incorporating advanced avionics. A new self-pressurizing propulsion system utilizing a miniaturized pump and non-toxic mono-propellant hydrogen peroxide was successfully tested. This system can provide a nominal 25 kg MicroSat with 200-300 m/s delta-v including a warm-gas attitude control system. The avionics is based on the latest PowerPC processor using a CompactPCI bus architecture, which is modular, high-performance and processor-independent. This leverages commercial-off-the-shelf (COTS) technologies and minimizes the effects of future changes in processors. The MicroSat software development environment uses the Vx-Works real-time operating system (RTOS) that provides a rapid development environment for integration of new software modules, allowing early integration and test. We will summarize results of recent integrated ground flight testing of our latest non-toxic pumped propulsion MicroSat testbed vehicle operated on our unique dynamic air-rail.

  1. International energy indicators. [International and US statistics

    SciTech Connect (OSTI)

    Bauer, E.K. (ed.)

    1980-03-01T23:59:59.000Z

    For the international sector, a table of data is first presented followed by corresponding graph of the data for the following: (1) Iran: crude oil capacity, production, and shut-in, 1974 to February 1980; (2) Saudi Arabia (same as Iran); (3) OPEC (ex-Iran and Saudi Arabia); capacity, production, and shut-in, 1974 to January 1980; (4) non-OPEC Free World and US production of crude oil, 1973 to January 1980; (5) oil stocks: Free World, US, Japan, and Europe (landed), 1973 to 1979; (6) petroleum consumption by industrial countries, 1973 to October 1979; (7) USSR crude oil production, 1974 to February 1980; (8) Free World and US nuclear generation capacity, 1973 to January 1980. For the United States, the same data format is used for the following: (a) US imports of crude oil and products 1973 to January 1980; (b) landed cost of Saudi Arabia crude oil in current and 1974 dollars, 1974 to October 1979; (c) US trade in coal, 1973 to 1979; (d) summary of US merchandise trade, 1976 to January 1980; and (e) US energy/GNP ratio (in 1972 dollars), 1947 to 1979.

  2. International Perspective on Fukushima Accident

    Broader source: Energy.gov [DOE]

    Presenter: Miroslav Lipár, Head, Operational Safety Section, Department of Nuclear Safety and Security, International Atomic Energy Agency

  3. Hanford internal dosimetry program manual

    SciTech Connect (OSTI)

    Carbaugh, E.H.; Sula, M.J.; Bihl, D.E.; Aldridge, T.L.

    1989-10-01T23:59:59.000Z

    This document describes the Hanford Internal Dosimetry program. Program Services include administrating the bioassay monitoring program, evaluating and documenting assessments of internal exposure and dose, ensuring that analytical laboratories conform to requirements, selecting and applying appropriate models and procedures for evaluating internal radionuclide deposition and the resulting dose, and technically guiding and supporting Hanford contractors in matters regarding internal dosimetry. 13 refs., 16 figs., 42 tabs.

  4. SUPPORTING GROUP APPLICATIONS VIA SATELLITE CONSTELLATIONS WITH MULTICAST L. Wood, H. Cruickshank, Z. Sun

    E-Print Network [OSTI]

    Wood, Lloyd

    SUPPORTING GROUP APPLICATIONS VIA SATELLITE CONSTELLATIONS WITH MULTICAST L. Wood, H. Cruickshank) to low-altitude low earth orbit (LEO). However, support for low-latency group applications Teledesic satellite has eight intersatellite links, in the 60GHz band, to its two nearest neighbours in each

  5. ACM-enabled satellite triple play over DVB-S2: A techno-economic study

    E-Print Network [OSTI]

    1 ACM-enabled satellite triple play over DVB-S2: A techno-economic study N. Anastasiadou1 , G looks at the techno-economic perspectives of the use of DVB-S2 and its unique feature, Adaptive Coding and Modulation (ACM) in the provision of satellite triple play. For this study, current market economic data were

  6. Simulating aerosols using a chemical transport model with assimilation of satellite aerosol retrievals

    E-Print Network [OSTI]

    Zender, Charles

    Simulating aerosols using a chemical transport model with assimilation of satellite aerosol for simulating aerosols has been developed using a chemical transport model together with an assimilation of satellite aerosol retrievals. The methodology and model components are described in this paper

  7. Satellite observations of the seasonal cycles of absorbing aerosols in Africa

    E-Print Network [OSTI]

    Graaf, Martin de

    Satellite observations of the seasonal cycles of absorbing aerosols in Africa related to monsoon system and aerosol loading is studied using multi-year satellite observations of UV-absorbing aerosols and rain gauge measurements. The seasonal variation of the aerosol distribution is clearly linked

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

    E-Print Network [OSTI]

    - 21 - Coastal Wind Mapping from Satellite SAR: Possibilities and Limitations Charlotte Bay Hasager and Merete Bruun Christiansen Risř National Laboratory, Wind Energy Department, Meteorology Program, VEA-118 Abstract Satellite remote sensing of ocean wind fields from Synthetic Aperture Radar (SAR) observations

  9. A Satellite Study of Tropical Moist Convection and Environmental Variability: A Moisture and Thermal Budget Analysis

    E-Print Network [OSTI]

    Masunaga, Hirohiko

    radiometer and scatterometer aboard different platforms. Satellite measurements of atmospheric parameters of moisture and dry static energy and their vertical flux at cloud base from satellite observations alone convergence for highly organized systems; 2) FT diabatic heating is largely offset on an instantaneous basis

  10. P5.60B DERIVATION OF DAYLIGHT AND SOLAR IRRADIANCE DATA FROM SATELLITE OBSERVATIONS

    E-Print Network [OSTI]

    Heinemann, Detlev

    P5.60B DERIVATION OF DAYLIGHT AND SOLAR IRRADIANCE DATA FROM SATELLITE OBSERVATIONS A. Hammer, D project SATELLIGHT an attempt is made to use satellite methods to derive daylight and solar irradiance). In daylighting applications, knowledge of the lumi- nance distribution of the sky is of primary concern. Thus

  11. Comparisons of optical properties of the coastal ocean derived from satellite ocean color and

    E-Print Network [OSTI]

    Chang, Grace C.

    Comparisons of optical properties of the coastal ocean derived from satellite ocean color Laboratory, Ocean Optics Section, Code 7333, Stennis Space Center, MS 39529 gould@nrlssc.navy.mil Abstract: Satellite-derived optical properties are compared to in situ mooring and ship-based measurements

  12. 2007 Urban Remote Sensing Joint Event Application of satellite Remote Sensing for Urban

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2007 Urban Remote Sensing Joint Event Application of satellite Remote Sensing for Urban Risk Analysis: a case study of the 2003 extreme heat wave in Paris Bénédicte Dousset Hawaii Institute@ogs.trieste.it Abstract ­ Satellite observations are used to monitor the August 2003 heat wave in Paris

  13. Sea surface exchanges of momentum, heat, and freshwater determined by satellite remote sensing

    E-Print Network [OSTI]

    Yu, Lisan

    1 Sea surface exchanges of momentum, heat, and freshwater determined by satellite remote sensing Freshwater flux Latent heat flux Longwave radiation Satellite remote sensing Sea surface flux estimation Sensible heat flux Shortwave radiation Surface wind fields 2 #12;Sea surface exchanges of momentum, heat

  14. Evaluation of satellite and reanalysis products of downward surface solar radiation over East Asia: Spatial and

    E-Print Network [OSTI]

    Dai, Aiguo

    Evaluation of satellite and reanalysis products of downward surface solar radiation over East Asia Received 29 July 2012; revised 27 February 2013; accepted 18 March 2013. [1] Surface solar radiation plays hydrological models. In this study, the downward surface solar radiation (DSSR) from two satellite products

  15. Data-Driven Model for Solar Irradiation Based on Satellite Observations

    E-Print Network [OSTI]

    Anitescu, Mihai

    available at any solar energy production plant. Mathematically, these techniques fall into the categoryData-Driven Model for Solar Irradiation Based on Satellite Observations Ilias Bilionisa , Emil M a data-driven model for solar irradiation based on satellite ob- servations. The model yields

  16. Feasibility study of extracting runoff data from satellite altimetry over continental surface waters

    E-Print Network [OSTI]

    Stuttgart, Universität

    the feasibility of extracting runoff data using satellite altimetry over all possible continental surface waters- ered algorithm for extracting runoff from the satellite altimetry is based on making water level. not feasible be- cause of bad quality of extracted water level time series class 4. impossible. Computed runoff

  17. Recent glacier changes in the Alps observed by satellite: Consequences for future monitoring strategies

    E-Print Network [OSTI]

    Kääb, Andreas

    Recent glacier changes in the Alps observed by satellite: Consequences for future monitoring satellite-derived Swiss glacier inventory revealed that mean glacier area loss per decade from 1985 to 1998 display much evidence that down- wasting (i.e. stationary thinning) has become a major source of glacier

  18. Diurnal variability of upper ocean temperatures from microwave satellite measurements and Argo profiles

    E-Print Network [OSTI]

    Gille, Sarah T.

    measurements. [3] Satellites measure SST at the surface of the ocean. Infrared satellite sensors measure. Data pairs with time separations of up to Ć3 h are used to evaluate systematic differences between a net impact on the climate sys- tem. The objective of this study is to evaluate the character

  19. 2013 ISES Solar World Congress Review of satellite-based surface solar irradiation databases for

    E-Print Network [OSTI]

    Recanati, Catherine

    the operating of the solar plant, the same actors along with operators and maintenance companies may need2013 ISES Solar World Congress Review of satellite-based surface solar irradiation databases explores the possibilities provided by satellite-based surface solar irradiation databases

  20. 1SCTP Multistreaming over satellite M.Atiquzzaman, Univ. of Oklahoma, Oct 22, 2003.

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    Page 1 1SCTP Multistreaming over satellite M.Atiquzzaman, Univ. of Oklahoma, Oct 22, 2003. Effect)) School of Computer Science University of Oklahoma. Email: atiq@ieee.org Web: www.cs.ou.edu/~atiq 12th over satellite M.Atiquzzaman, Univ. of Oklahoma, Oct 22, 2003. Introduction TCP is the main transport

  1. Estimating Sea Surface Temperature From Infrared Satellite and In Situ Temperature Data

    E-Print Network [OSTI]

    the exchanges of heat, momentum and gases between the ocean and the atmosphere. As the most widely observed variable in oceanography, SST is used in many different studies of the ocean and its coupling to adjust the satellite SSTs to match a selection of buoy SSTs. This forces the satellite skin SSTs

  2. 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

  3. DEM GENERATION FROM ASTER SATELLITE DATA FOR GEOMORPHOMETRIC ANALYSIS OF CERRO SILLAJHUAY, CHILE/BOLIVIA

    E-Print Network [OSTI]

    Bolch, Tobias

    DEM GENERATION FROM ASTER SATELLITE DATA FOR GEOMORPHOMETRIC ANALYSIS OF CERRO SILLAJHUAY, CHILE/BOLIVIA, a volcano in the Andes of Chile/Bolivia, was developed from ASTER (Advanced Spaceborne Thermal Emission ASTER satellite data of the Cerro Sillajhuay in the Andes of Chile/Bolivia. Fieldwork at the Cerro

  4. International Refrigeration: Order (2012-CE-1510) | Department...

    Energy Savers [EERE]

    International Refrigeration: Order (2012-CE-1510) International Refrigeration: Order (2012-CE-1510) July 20, 2012 DOE ordered International Refrigeration Products to pay an 8,000...

  5. International Fuel Services and Commercial Engagement | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    International Fuel Services and Commercial Engagement International Fuel Services and Commercial Engagement The Office of International Nuclear Energy Policy and Cooperation...

  6. International Nuclear Security

    SciTech Connect (OSTI)

    Doyle, James E. [Los Alamos National Laboratory

    2012-08-14T23:59:59.000Z

    This presentation discusses: (1) Definitions of international nuclear security; (2) What degree of security do we have now; (3) Limitations of a nuclear security strategy focused on national lock-downs of fissile materials and weapons; (4) What do current trends say about the future; and (5) How can nuclear security be strengthened? Nuclear security can be strengthened by: (1) More accurate baseline inventories; (2) Better physical protection, control and accounting; (3) Effective personnel reliability programs; (4) Minimize weapons-usable materials and consolidate to fewer locations; (5) Consider local threat environment when siting facilities; (6) Implement pledges made in the NSS process; and (7) More robust interdiction, emergency response and special operations capabilities. International cooperation is desirable, but not always possible.

  7. WORKFLOW SIMULATION FOR INTERNATIONAL TRADE

    E-Print Network [OSTI]

    Thomborson, Clark

    WORKFLOW SIMULATION FOR INTERNATIONAL TRADE Qiang Dong Supervised by Professor Clark Thomborson's competitive world. International trade has received some academic attention as an application of Business Process Reengineering. A major issue in international trade is due to problems pertaining to mutual

  8. MENTAL HEALTH and INTERNATIONAL STUDENTS

    E-Print Network [OSTI]

    MENTAL HEALTH and INTERNATIONAL STUDENTS: What Educators Need to Know Ingle International cares not adequately researched, it is well accepted by health care professionals that early intervention could about you and your students www.studyinsured.com #12;www.studyinsured.comMental Health and International

  9. TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE

    E-Print Network [OSTI]

    Ide, Nancy

    ) developed by the International Standards Organization TC32 SC4, which is to serve as a basis for harmonizing. It is in this context that a committee of the International Standards Organization (ISO), TC 37/SC 4Chapter # TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE RESOURCES Nancy Ide and Laurent Romary

  10. TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE

    E-Print Network [OSTI]

    Boyer, Edmond

    ) developed by the International Standards Organization TC32 SC4, which is to serve as a basis for harmonizingChapter # TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE RESOURCES Nancy Ide and Laurent Romary-284" #12;2 Chapter # Language Engineering Standards (EAGLES) and the International Standard for Language

  11. INTERNATIONAL JOURNAL OF DEVELOPMENT ISSUES

    E-Print Network [OSTI]

    INTERNATIONAL JOURNAL OF DEVELOPMENT ISSUES VOL. 4 · No. 2 December 2005 CONTENTS Jeffrey D. Sachs-97 and the Bulgarian currency board 95 #12;#12;International Journal of Development Issues Vol. 4, No. 2 (2005) 1 Science, University of Sydney, New South Wales, Australia. #12;J.D. Sachs /International Journal

  12. Polarized internal target apparatus

    DOE Patents [OSTI]

    Holt, R.J.

    1984-10-10T23:59:59.000Z

    A polarized internal target apparatus with a polarized gas target of improved polarization and density (achieved by mixing target gas atoms with a small amount of alkali metal gas atoms, and passing a high intensity polarized light source into the mixture to cause the alkali metal gas atoms to become polarized which interact in spin exchange collisions with target gas atoms yielding polarized target gas atoms) is described.

  13. International petroleum statistics report

    SciTech Connect (OSTI)

    Not Available

    1995-01-01T23:59:59.000Z

    This monthly publication provides current data on international oil production, demand, imports, exports, and stocks. Section 1 contains time series data on world oil production, and on oil demand and stocks in the OECD. Section 2 presents an oil supply/demand balance for the world. Section 3 presents data on oil imports by OECD countries. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries.

  14. International energy outlook 2006

    SciTech Connect (OSTI)

    NONE

    2006-06-15T23:59:59.000Z

    This report presents international energy projections through 2030, prepared by the Energy Information Administration. After a chapter entitled 'Highlights', the report begins with a review of world energy and economic outlook, followed by energy consumption by end-use sector. The next chapter is on world oil markets. Natural gas, world coal market and electricity consumption and supply are then discussed. The final chapter covers energy-related carbon dioxide emissions.

  15. International markets for CCTs

    SciTech Connect (OSTI)

    Ferriter, J.P. [International Energy Agency, Paris (France)

    1997-12-31T23:59:59.000Z

    The paper begins by describing the role of the International Energy Agency, the importance of coal, what the IEA is doing in the area of clean coal technology, and the role of the IEA Coal Industry Advisory Board. The paper then discusses which coal technologies will be chosen, what the problem areas are, and what can be done to accelerate the take-up of clean coal technologies.

  16. An Image-Based Sensor System for Autonomous Rendez-Vous with Uncooperative Satellites

    E-Print Network [OSTI]

    Miravet, Carlos; Krouch, Eloise; del Cura, Juan Manuel

    2008-01-01T23:59:59.000Z

    In this paper are described the image processing algorithms developed by SENER, Ingenieria y Sistemas to cope with the problem of image-based, autonomous rendez-vous (RV) with an orbiting satellite. The methods developed have a direct application in the OLEV (Orbital Life Extension Extension Vehicle) mission. OLEV is a commercial mission under development by a consortium formed by Swedish Space Corporation, Kayser-Threde and SENER, aimed to extend the operational life of geostationary telecommunication satellites by supplying them control, navigation and guidance services. OLEV is planned to use a set of cameras to determine the angular position and distance to the client satellite during the complete phases of rendez-vous and docking, thus enabling the operation with satellites not equipped with any specific navigational aid to provide support during the approach. The ability to operate with un-equipped client satellites significantly expands the range of applicability of the system under development, compar...

  17. International petroleum statistics report

    SciTech Connect (OSTI)

    NONE

    1997-07-01T23:59:59.000Z

    The International Petroleum Statistics Report is a monthly publication that provides current international data. The report presents data on international oil production, demand, imports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent 12 months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. World oil production and OECD demand data are for the years 1970 through 1996; OECD stocks from 1973 through 1996; and OECD trade from 1986 through 1996.

  18. Internal Audit OverviewInternal Audit Overview Audit's Role in Governance, Risk Management and Internal Control

    E-Print Network [OSTI]

    Buehrer, R. Michael

    Internal Audit OverviewInternal Audit Overview Audit's Role in Governance, Risk Management Activities - Risk Management Scope of Audit Activities - Risk Management · Risk is the possibility exposures to risk, assessing the effectiveness of the University's risk management system, and contributing

  19. Extracting cosmic microwave background polarisation from satellite astrophysical maps

    E-Print Network [OSTI]

    Baccigalupi, C; De Zotti, G; Smoot, G F; Burigana, C; Maino, D; Bedini, L; Salerno, E

    2002-01-01T23:59:59.000Z

    We present the application of the Fast Independent Component Analysis technique for blind component separation to polarised astrophysical emission. We study how the Cosmic Microwave Background (CMB) polarised signal, consisting of $E$ and $B$ modes, can be extracted from maps affected by substantial contamination from diffuse Galactic foregrounds and instrumental noise. We perform the analysis of all sky maps simulated accordingly to the nominal performances of the Low Frequency Instrument (LFI) aboard the Planck satellite; the sky signal is modeled as a superposition of CMB, generated by a Gaussian, nearly scale invariant cosmological perturbation spectrum, and the existing simulated polarisation templates of Galactic synchrotron. Our results indicate that the angular power spectrum of CMB $E$ modes can be recovered on all scales up to $\\ell\\simeq 1000$, corresponding to the fourth acoustic oscillation, while $B$ modes can be detected, up to their turnover at $\\ell\\simeq 100$ if cosmological tensor amplitude...

  20. 1999 IEEE international geoscience and remote sensing symposium

    SciTech Connect (OSTI)

    NONE

    1999-07-01T23:59:59.000Z

    The theme of IGARSS'99, ``Remote Sensing of the System Earth--A Challenge for the 21st Century,'' shows how earth observation based on satellite remote sensing can significantly contribute to the future study of the environment and the changes it is undergoing, whether from natural causes or human activities. The wide range of topics offers an interdisciplinary approach and suggests integrated techniques and theory in remote sensing are essential for modeling and understanding the environment. Topics covered include: new instrumentation and future systems; high resolution SAR/InSAR; earth system science educational initiative; data fusion; radar sensing of ice sheets; image processing techniques; clouds and ice particles; internal waves; natural hazards and disaster monitoring; advanced passive and active sensors and sensor calibration; radar assessment of rain, oil spills and natural slicks; data standards and distribution; and vegetation monitoring using BRDF approaches.

  1. Assessing the technical, economic and policy-centered feasibility of a proposed satellite communication system for the developing world

    E-Print Network [OSTI]

    Samuels, Ayanna Terehas

    2005-01-01T23:59:59.000Z

    Satellite communication systems remain one of the most under utilized development mediums in less industrialized countries. This research proposes to establish a low cost satellite communications system tailored specifically ...

  2. AVTA: 2010 Electric Vehicles International Neighborhood Electric...

    Energy Savers [EERE]

    10 Electric Vehicles International Neighborhood Electric Vehicle Testing Results AVTA: 2010 Electric Vehicles International Neighborhood Electric Vehicle Testing Results The...

  3. Natural System Evaluation and Tool Development: International...

    Energy Savers [EERE]

    Natural System Evaluation and Tool Development: International Collaborations - FY'13 Progress Report Natural System Evaluation and Tool Development: International Collaborations -...

  4. International Collaborations on Engineered Barrier Systems: Experiment...

    Energy Savers [EERE]

    International Collaborations on Engineered Barrier Systems: Experimental and Modeling Investigations International Collaborations on Engineered Barrier Systems: Experimental and...

  5. Upcoming Webinar December 16: International Hydrogen Infrastructure...

    Energy Savers [EERE]

    Upcoming Webinar December 16: International Hydrogen Infrastructure Challenges NOW, DOE, and NEDO Upcoming Webinar December 16: International Hydrogen Infrastructure Challenges...

  6. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; Nancy Porter; Mike Sullivan; Chris Neary

    2004-04-12T23:59:59.000Z

    The two broad categories of deposited weld metal repair and fiber-reinforced composite liner repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repair and for fiber-reinforced composite liner repair. Evaluation trials have been conducted using a modified fiber-reinforced composite liner provided by RolaTube and pipe sections without liners. All pipe section specimens failed in areas of simulated damage. Pipe sections containing fiber-reinforced composite liners failed at pressures marginally greater than the pipe sections without liners. The next step is to evaluate a liner material with a modulus of elasticity approximately 95% of the modulus of elasticity for steel. Preliminary welding parameters were developed for deposited weld metal repair in preparation of the receipt of Pacific Gas & Electric's internal pipeline welding repair system (that was designed specifically for 559 mm (22 in.) diameter pipe) and the receipt of 559 mm (22 in.) pipe sections from Panhandle Eastern. The next steps are to transfer welding parameters to the PG&E system and to pressure test repaired pipe sections to failure. A survey of pipeline operators was conducted to better understand the needs and performance requirements of the natural gas transmission industry regarding internal repair. Completed surveys contained the following principal conclusions: (1) Use of internal weld repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling (HDD) when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) Pipe diameter sizes range from 50.8 mm (2 in.) through 1,219.2 mm (48 in.). The most common size range for 80% to 90% of operators surveyed is 508 mm to 762 mm (20 in. to 30 in.), with 95% using 558.8 mm (22 in.) pipe. An evaluation of potential repair methods clearly indicates that the project should continue to focus on the development of a repair process involving the use of GMAW welding and on the development of a repair process involving the use of fiber-reinforced composite liners.

  7. Internal absorber solar collector

    DOE Patents [OSTI]

    Sletten, Carlyle J. (106 Nagog Hill Rd., Acton, MA 01720); Herskovitz, Sheldon B. (88 Hammond St., Acton, MA 01720); Holt, F. S. (46 Emerson Rd., Winchester, MA 01890); Sletten, E. J. (Chestnut Hill Rd. R.F.D. Rte. #4, Amherst, NH 03031)

    1981-01-01T23:59:59.000Z

    Thin solar collecting panels are described made from arrays of small rod collectors consisting of a refracting dielectric rod lens with an absorber imbedded within it and a reflecting mirror coated on the back side of the dielectric rod. Non-tracking collector panels on vertical walls or roof tops receive approximately 90% of solar radiation within an acceptance zone 60.degree. in elevation angle by 120.degree. or more in the azimuth sectors with a collector concentration ratio of approximately 3.0. Miniaturized construction of the circular dielectric rods with internal absorbers reduces the weight per area of glass, plastic and metal used in the collector panels. No external parts or insulation are needed as heat losses are low due to partial vacuum or low conductivity gas surrounding heated portions of the collector. The miniature internal absorbers are generally made of solid copper with black selective surface and the collected solar heat is extracted at the collector ends by thermal conductivity along the absorber rods. Heat is removed from end fittings by use of liquid circulants. Several alternate constructions are provided for simplifying collector panel fabrication and for preventing the thermal expansion and contraction of the heated absorber or circulant tubes from damaging vacuum seals. In a modified version of the internal absorber collector, oil with temperature dependent viscosity is pumped through a segmented absorber which is now composed of closely spaced insulated metal tubes. In this way the circulant is automatically diverted through heated portions of the absorber giving higher collector concentration ratios than theoretically possible for an unsegmented absorber.

  8. Internal combustion engine

    SciTech Connect (OSTI)

    Evans, H.G.; Speer, S.

    1991-12-31T23:59:59.000Z

    This patent describes improvement in a 2-cycle, diesel cycle internal combustion engine comprising a single in-line engine block, internal wall surfaces defining at least one cylinder within the engine block, the central longitudinal axis of each cylinder being within a common plane extending longitudinally of the engine block, the axially extending internal wall surface of each cylinder being closed at one end and having at least one air intake port therethrough, a piston axially and reciprocally movable within each cylinder over a permitted stroke distance, so as to alternately cover and expose each air intake port for a finite time period; an exhaust port at the closed end of the cylinder above the piston, and a mechanically operated valve for opening and closing such exhaust port located immediately adjacent such port, a substantially rigid connecting rod pivotably connected at one end of each piston, and a crankshaft, rotatably connected to the second end of each connecting rod, such that the crankshaft is caused to rotate connecting means between the piston and the connecting rod. The improvement comprises the diameter of the cylinder is greater than the permitted stroke distance of the piston within the cylinder, and the axis of the crankshaft is parallel to and laterally offset from the common plane by a distance sufficient to form an angle alpha between the connecting rod and the axis of the cylinder, when the piston is at top-dead center, of at least about 12 degrees, such that the time during which each air intake port is exposed is increased when the direction of crankshaft rotation is opposite to the direction of the crankshaft offset from the common plane.

  9. International energy annual 1995

    SciTech Connect (OSTI)

    NONE

    1996-12-01T23:59:59.000Z

    The International Energy Annual presents information and trends on world energy production and consumption for petroleum, natural gas, coal, and electricity. Production and consumption data are reported in standard units as well as British thermal units (Btu). Trade and reserves are shown for petroleum, natural gas, and coal. Data are provided on crude oil refining capacity and electricity installed capacity by type. Prices are included for selected crude oils and for refined petroleum products in selected countries. Population and Gross Domestic Product data are also provided.

  10. International energy outlook 2005

    SciTech Connect (OSTI)

    NONE

    2005-07-01T23:59:59.000Z

    This report presents international energy projections through 2025, prepared by the Energy Information Administration. The outlooks for major energy fuels are discussed, along with electricity, transportation, and environmental issues. After a chapter entitled 'Highlights', the report begins with a review of world energy and an economic outlook. The IEO2005 projections cover a 24 year period. The next chapter is on world oil markets. Natural gas and coal reserves and resources, consumption and trade discussed. The chapter on electricity deals with primary fuel use for electricity generation, and regional developments. The final section is entitled 'Energy-related greenhouse gas emissions'.

  11. International energy annual, 1993

    SciTech Connect (OSTI)

    NONE

    1995-05-08T23:59:59.000Z

    This document presents an overview of key international energy trends for production, consumption, imports, and exports of primary energy commodities in over 200 countries, dependencies, and areas of special sovereignty. Also included are population and gross domestic product data, as well as prices for crude oil and petroleum products in selected countries. Renewable energy includes hydroelectric, geothermal, solar and wind electric power and alcohol for fuel. The data were largely derived from published sources and reports from US Embassy personnel in foreign posts. EIA also used data from reputable secondary sources, industry reports, etc.

  12. International Energy Statistics - EIA

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > The Energy Materials Center at CornellOfvia aEnergyInternational

  13. Sandia Energy - International Leadership

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatingsUltra-High-VoltagePower Company'sInAsInternational Leadership Home

  14. NEAC International Subcommittee Recommendations

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaeferApril 1,(EAC)TABLEChallenges areNational Defense IndustrialInternational

  15. International energy outlook 1998

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    The International Energy Outlook 1998 (IEO98) presents an assessment by the Energy Information Administration (EIA) of the outlook for international energy markets through 2020. Projections in IEO98 are displaced according to six basic country groupings. The industrialized region includes projections for four individual countries -- the United States, Canada, Mexico, and Japan -- along with the subgroups Western Europe and Australasia (defined as Australia, New Zealand, and the US Territories). The developing countries are represented by four separate regional subgroups: developing Asia, Africa, Middle East, and Central and South America. China and India are represented in developing Asia. New to this year`s report, country-level projections are provided for Brazil -- which is represented in Central and South America. Eastern Europe and the former Soviet Union (EE/FSU) are considered as a separate country grouping. The report begins with a review of world trends in energy demand. Regional consumption projections for oil, natural gas, coal, nuclear power, and renewable energy (hydroelectricity, geothermal, wind, solar, and other renewables) are presented in five fuel chapters, with a review of the current status of each fuel on a worldwide basis. Summary tables of the IEO98 projections for world energy consumption, carbon emissions, oil production, and nuclear power generating capacity are provided in Appendix A. 88 figs., 77 tabs.

  16. The International Linear Collider

    E-Print Network [OSTI]

    Barish, Barry

    2013-01-01T23:59:59.000Z

    In this article, we describe the key features of the recently completed technical design for the International Linear Collider (ILC), a 200-500 GeV linear electron-positron collider (expandable to 1 TeV) that is based on 1.3 GHz superconducting radio-frequency (SCRF) technology. The machine parameters and detector characteristics have been chosen to complement the Large Hadron Collider physics, including the discovery of the Higgs boson, and to further exploit this new particle physics energy frontier with a precision instrument. The linear collider design is the result of nearly twenty years of R&D, resulting in a mature conceptual design for the ILC project that reflects an international consensus. We summarize the physics goals and capability of the ILC, the enabling R&D and resulting accelerator design, as well as the concepts for two complementary detectors. The ILC is technically ready to be proposed and built as a next generation lepton collider, perhaps to be built in stages beginning as a Hig...

  17. International petroleum statistics report

    SciTech Connect (OSTI)

    NONE

    1995-11-01T23:59:59.000Z

    The International Petroleum Statistics Report presents data on international oil production, demand, imports, exports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent twelve months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. World oil production and OECD demand data are for the years 1970 through 1994; OECD stocks from 1973 through 1994; and OECD trade from 1984 through 1994.

  18. International Clean Energy Coalition

    SciTech Connect (OSTI)

    Erin Skootsky; Matt Gardner; Bevan Flansburgh

    2010-09-28T23:59:59.000Z

    In 2003, the National Association of Regulatory Utility Commissioners (NARUC) and National Energy Technology Laboratories (NETL) collaboratively established the International Clean Energy Coalition (ICEC). The coalition consisting of energy policy-makers, technologists, and financial institutions was designed to assist developing countries in forming and supporting local approaches to greenhouse gas mitigation within the energy sector. ICEC's work focused on capacity building and clean energy deployment in countries that rely heavily on fossil-based electric generation. Under ICEC, the coalition formed a steering committee consisting of NARUC members and held a series of meetings to develop and manage the workplan and define successful outcomes for the projects. ICEC identified India as a target country for their work and completed a country assessment that helped ICEC build a framework for discussion with Indian energy decisionmakers including two follow-on in-country workshops. As of the conclusion of the project in 2010, ICEC had also conducted outreach activities conducted during United Nations Framework Convention on Climate Change (UNFCCC) Ninth Conference of Parties (COP 9) and COP 10. The broad goal of this project was to develop a coalition of decision-makers, technologists, and financial institutions to assist developing countries in implementing affordable, effective and resource appropriate technology and policy strategies to mitigate greenhouse gas emissions. Project goals were met through international forums, a country assessment, and in-country workshops. This project focused on countries that rely heavily on fossil-based electric generation.

  19. Understanding Lustre Internals

    SciTech Connect (OSTI)

    Wang, Feiyi [ORNL; Oral, H Sarp [ORNL; Shipman, Galen M [ORNL; Drokin, Oleg [ORNL; Wang, Di [ORNL; Huang, He [ORNL

    2009-04-01T23:59:59.000Z

    Lustre was initiated and funded, almost a decade ago, by the U.S. Department of Energy (DoE) Office of Science and National Nuclear Security Administration laboratories to address the need for an open source, highly-scalable, high-performance parallel filesystem on by then present and future supercomputing platforms. Throughout the last decade, it was deployed over numerous medium-to-large-scale supercomputing platforms and clusters, and it performed and met the expectations of the Lustre user community. As it stands at the time of writing this document, according to the Top500 list, 15 of the top 30 supercomputers in the world use Lustre filesystem. This report aims to present a streamlined overview on how Lustre works internally at reasonable details including relevant data structures, APIs, protocols and algorithms involved for Lustre version 1.6 source code base. More importantly, it tries to explain how various components interconnect with each other and function as a system. Portions of this report are based on discussions with Oak Ridge National Laboratory Lustre Center of Excellence team members and portions of it are based on our own understanding of how the code works. We, as the authors team bare all responsibilities for all errors and omissions in this document. We can only hope it helps current and future Lustre users and Lustre code developers as much as it helped us understanding the Lustre source code and its internal workings.

  20. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

    Bill Bruce; Nancy Porter; George Ritter; Matt Boring; Mark Lozev; Ian Harris; Bill Mohr; Dennis Harwig; Robin Gordon; Chris Neary; Mike Sullivan

    2005-07-20T23:59:59.000Z

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. In lieu of a field installation on an abandoned pipeline, a preliminary nondestructive testing protocol is being developed to determine the success or failure of the fiber-reinforced liner pipeline repairs. Optimization and validation activities for carbon-fiber repair methods are ongoing.

  1. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-12-31T23:59:59.000Z

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. The first round of optimization and validation activities for carbon-fiber repairs are complete. Development of a comprehensive test plan for this process is recommended for use in the field trial portion of this program.

  2. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-08-17T23:59:59.000Z

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. Development of a comprehensive test plan for this process is recommended for use in the field trial portion of this program.

  3. MACS as a tool for international inspections

    SciTech Connect (OSTI)

    Curtiss, J.A.; Indusi, J.P.

    1995-06-01T23:59:59.000Z

    General acceptance of the challenge provision in the Chemical Weapons Convention has the potential for influence in other arms control areas. While most applications of the challenge inspection may be straightforward, there may be instances where access to the site by inspectors may be problematic. The MACS system described in this paper was developed to respond to these situations. Inspection and verification may be difficult when a host is unwilling,for valid reasons, to permit physical access to a site. We proposed a system of remote sensors which may be used to demonstrate compliance with Chemical Weapons Convention (CWC) challenge inspections even ff the inspector is physically excluded from a sensitive site. The system is based upon alternative-means-of-access provisions of the CWC. The Defense Nuclear Agency (DNA) funded design and construction of a system prototype, designated as MACS for Managed Access by Controlled Sensing. Features of the MACS design allow growth of the prototype into a versatile device for international monitoring of production facilities and other sites. MACS consists of instrumentation and communication equipment allowing site personnel to conduct a facility tour and perform acceptable measurements, while physically excluding the inspector from the facility. MACS consists of a base station used by the inspector, and a mobile unit used within the facility and manipulated by the facility staff. The base station and the mobile unit are @ed by a communication system, currently realized as a fiber optic cable. The mobile unit is equipped with television cameras and remote-reading distance-measuring equipment (DME) for use in verifying locations and dimensions. Global Positioning System receivers on the mobile unit provide both precise location and dead reckoning, suitable for tracking the mobile unit`s position while within a building when satellite signals are not available.

  4. international | netl.doe.gov

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

    International Activity in Gasification and Coal to Liquids Development News Gasifipedia Gasifier Optimization Feed Systems Syngas Processing Systems Analyses Gasification Plant...

  5. Honeywell International ESCO Qualification Sheet

    Broader source: Energy.gov [DOE]

    Document outlines the energy service company (ESCO) qualifications for Honeywell International in relation to the U.S. Department of Energy's (DOEs) energy savings performance contracts (ESPC).

  6. International Quality Assurance Standards (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.; Hacke, P.; Wohlgemuth, J.; Kempe, M.; Yamamichi, M.

    2011-02-01T23:59:59.000Z

    Tests to make quantitative predictions about photovoltaic (PV) modules are needed. This presentation proposes the creation of international quality assurance standards for PV modules.

  7. Extracting cosmic microwave background polarisation from satellite astrophysical maps

    E-Print Network [OSTI]

    C. Baccigalupi; F. Perrotta; G. De Zotti; G. F. Smoot; C. Burigana; D. Maino; L. Bedini; E. Salerno

    2004-07-12T23:59:59.000Z

    We present the application of the Fast Independent Component Analysis ({\\ica}) technique for blind component separation to polarized astrophysical emission. We study how the Cosmic Microwave Background (CMB) polarized signal, consisting of $E$ and $B$ modes, can be extracted from maps affected by substantial contamination from diffuse Galactic foreground emission and instrumental noise. {We implement Monte Carlo chains varying the CMB and noise realizations in order to asses the average capabilities of the algorithm and their variance.} We perform the analysis of all sky maps simulated according to the {\\sc Planck} satellite capabilities, modelling the sky signal as a superposition of the CMB and of the existing simulated polarization templates of Galactic synchrotron. Our results indicate that the angular power spectrum of CMB $E$-mode can be recovered on all scales up to $\\ell\\simeq 1000$, corresponding to the fourth acoustic oscillation, while the $B$-mode power spectrum can be detected, up to its turnover at $\\ell\\simeq 100$, if the ratio of tensor to scalar contributions to the temperature quadrupole exceeds 30%. The power spectrum of the cross correlation between total intensity and polarization, $TE$, can be recovered up to $\\ell\\simeq 1200$, corresponding to the seventh $TE$ acoustic oscillation.

  8. Hardware demonstration of high-speed networks for satellite applications.

    SciTech Connect (OSTI)

    Donaldson, Jonathon W.; Lee, David S.

    2008-09-01T23:59:59.000Z

    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.

  9. Preliminary materials assessment for the Satellite Power System (SPS)

    SciTech Connect (OSTI)

    Teeter, R.R.; Jamieson, W.M.

    1980-01-01T23:59:59.000Z

    Presently, there are two SPS reference design concepts (one using silicon solar cells; the other using gallium arsenide solar cells). A materials assessment of both systems was performed based on the materials lists set forth in the DOE/NASA SPS Reference System Report: Concept Development and Evaluation Program. This listing identified 22 materials (plus miscellaneous and organics) used in the SPS. Tracing the production processes for these 22 materials, a total demand for over 20 different bulk materials (copper, silicon, sulfuric acid, etc.) and nealy 30 raw materials (copper ore, sand, sulfur ore, etc.) was revealed. Assessment of these SPS material requirements produced a number of potential material supply problems. The more serious problems are those associated with the solar cell materials (gallium, gallium arsenide, sapphire, and solar grade silicon), and the graphite fiber required for the satellite structure and space construction facilities. In general, the gallium arsenide SPS option exhibits more serious problems than the silicon option, possibly because gallium arsenide technology is not as well developed as that for silicon. Results are presented and discussed in detail. (WHK)

  10. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Crittenden, W.

    1987-01-27T23:59:59.000Z

    This patent describes an improved rotary internal combustion engine comprising: (a) a combustion chamber which is generally circular in cross-section and which has a ring-like peripheral wall; (b) a driven shaft member journaled for rotation and disposed to pass eccentrically through the combustion chamber; (c) a compression chamber which is generally circular in cross-section positioned with a ring-like wall is adjacent to and spatially offset with the combustion chamber such that the driven shaft passes centrally therethrough; and (d) a circular combustion rotor fixed concentrically to the shaft member for rotation eccentrically within the combustion chamber. The combustion rotor is positioned such that the space between the periphery of the rotor and the periphery of the combustion chamber results in a crescent shape.

  11. Progress Towards International Repositories

    SciTech Connect (OSTI)

    McCombie, C.; Chapman, N.

    2002-02-27T23:59:59.000Z

    The nuclear fuel cycle is designed to be very international, with some specialist activities (e.g. fuel fabrication, reprocessing, etc.) being confined to a few countries. Nevertheless, political and public opposition has in the past been faced by proposals to internationalise the back-end of the cycle, in particular waste disposal. Attitudes, however, have been changing recently and there is now more acceptance of the general concept of shared repositories and of specific proposals such as that of Pangea. However, as for national facilities, progress towards implementation of shared repositories will be gradual. Moreover, the best vehicle for promoting the concept may not be a commercial type of organization. Consequently the Pangea project team are currently establishing a widely based Association for this purpose.

  12. INTERNATIONAL DECOMMISSIONING SYMPOSIUM 2000

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.

    2001-01-01T23:59:59.000Z

    The purpose of IDS 2000 was to deliver a world-class conference on applicable global environmental issues. The objective of this conference was to publicize environmental progress of individual countries, to provide a forum for technology developer and problem-holder interaction, to facilitate environmental and technology discussions between the commercial and financial communities, and to accommodate information and education exchange between governments, industries, universities, and scientists. The scope of this project included the planning and execution of an international conference on the decommissioning of nuclear facilities, and the providing of a business forum for vendors and participants sufficient to attract service providers, technology developers, and the business and financial communities. These groups, when working together with attendees from regulatory organizations and government decision-maker groups, provide an opportunity to more effectively and efficiently expedite the decommissioning projects.

  13. International District Energy Association

    Broader source: Energy.gov [DOE]

    Since its formation in 1909, the International District Energy Association (IDEA) has served as a principal industry advocate and management resource for owners, operators, developers, and suppliers of district heating and cooling systems in cities, campuses, bases, and healthcare facilities. Today, with over 1,400 members in 26 countries, IDEA continues to organize high-quality technical conferences that inform, connect, and advance the industry toward higher energy efficiency and lower carbon emissions through innovation and investment in scalable sustainable solutions. With the support of DOE, IDEA performs industry research and market analysis to foster high impact projects and help transform the U.S. energy industry. IDEA was an active participant in the original Vision and Roadmap process and has continued to partner with DOE on combined heat and power (CHP) efforts across the country.

  14. If the internship is international or involves international travel, the

    E-Print Network [OSTI]

    Hart, Gus

    If the internship is international or involves international travel, the student does not need to complete the IRAMS student internship ap- plication, but should contact the Kennedy Center for internship approval and course registration. Flag will be removed, and students will be able to add their internship

  15. If the internship is international or involves international travel, the

    E-Print Network [OSTI]

    Dahl, David B.

    If the internship is international or involves international travel, the student does not need to complete the IRAMS student internship application, but should contact the Kennedy Center for internship approval and course registration. Flag will be removed, and students will be able to add their internship

  16. International PatentInternational Patent Protection: 1990 -Protection: 1990 -

    E-Print Network [OSTI]

    Lansky, Joshua

    International PatentInternational Patent Protection: 1990 -Protection: 1990 - 20052005 Measurement and TrendsMeasurement and Trends Patent Strength and Stages of EconomicPatent Strength and Stages of Economic DevelopmentDevelopment #12;I. Measurement & TrendsI. Measurement & Trends Patent Rights Index (0

  17. PEFC Uruguay Seeks International Recognition JUL 26 2010 | INTERNATIONAL

    E-Print Network [OSTI]

    PEFC Uruguay Seeks International Recognition JUL 26 2010 | INTERNATIONAL Uruguay has become important and fastest growing sectors in Uruguay, the sustainable management of the forest resource the organization. If approved, Uruguay would become the third Latin American country featuring a PEFC

  18. Development and analysis of a small satellite attitude determination and control system testbed

    E-Print Network [OSTI]

    Crowell, Corey Whitcomb

    2011-01-01T23:59:59.000Z

    Attitude Determination and Control Systems (ADCS) are critical to the operation of satellites that require attitude knowledge and/or attitude control to achieve mission success. Furthermore, ADCS systems only operate as ...

  19. Aerosol loading in the Southeastern United States: reconciling surface and satellite observations

    E-Print Network [OSTI]

    Ford, B.

    We investigate the seasonality in aerosols over the Southeastern United States using observations from several satellite instruments (MODIS, MISR, CALIOP) and surface network sites (IMPROVE, SEARCH, AERONET). We find that ...

  20. Modeling Space-Time Dynamics of Aerosols Using Satellite Data and Atmospheric Transport Model Output

    E-Print Network [OSTI]

    Shi, Tao

    Modeling Space-Time Dynamics of Aerosols Using Satellite Data and Atmospheric Transport Model of aerosol optical depth across mainland Southeast Asia. We include a cross validation study to assess

  1. First Observations of SO2 from the Satellite Suomi NPP OMPS: Widespread Air Pollution Events over

    E-Print Network [OSTI]

    Dickerson, Russell R.

    First Observations of SO2 from the Satellite Suomi NPP OMPS: Widespread Air Pollution Events over. The largest sources of air pollutants in China are coal combustion and motor vehicle exhausts [He et al., 2002

  2. Emissions of crustal material in air quality forecast systems: Use of satellite observations

    E-Print Network [OSTI]

    Menut, Laurent

    Emissions of crustal material in air quality forecast systems: Use of satellite observations) Natural (dust, fires, volcanos) Meteorology: Transport, turbulence Clouds and radiation, precipitations Chemistry-transport model Gas and particles concentrations Use of model outputs: Analysis Direct: model vs

  3. Causal relationships between solar proton events and single event upsets for communication satellites

    E-Print Network [OSTI]

    Lohmeyer, Whitney Quinne

    In this work, we analyze a historical archive of single event upsets (SEUs) maintained by Inmarsat, one of the world's leading providers of global mobile satellite communications services. Inmarsat has operated its ...

  4. Data management of geostationary communication satellite telemetry and correlation to space weather observations

    E-Print Network [OSTI]

    Lohmeyer, Whitney Quinne

    2013-01-01T23:59:59.000Z

    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 Inmarsat, the UK-based telecommunications ...

  5. Height change detection in Antarcita using satellite altimetry data and Kriging / Kalman filtering techniques

    E-Print Network [OSTI]

    Nguyen, An Thanh-Thuy

    2006-01-01T23:59:59.000Z

    Studies of the response of ice sheets to climate change require data sets with high accuracy and uniform ice-sheet coverage. The most common technique used in analyzing satellite altimetry data to study height change in ...

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

    SciTech Connect (OSTI)

    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

    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.

  7. SHORT-TERM FORECASTING OF SOLAR RADIATION BASED ON SATELLITE DATA WITH STATISTICAL METHODS

    E-Print Network [OSTI]

    Heinemann, Detlev

    SHORT-TERM FORECASTING OF SOLAR RADIATION BASED ON SATELLITE DATA WITH STATISTICAL METHODS Annette governing the insolation, forecasting of solar radiation makes the description of development of the cloud

  8. SEA SURFACE CURRENT FIELDS IN THE BALTIC SEA DERIVED FROM MULTI-SENSOR SATELLITE DATA

    E-Print Network [OSTI]

    Hamburg,.Universität

    -sensor, algae blooms, surface currents, optical flow ABSTRACT: Mesoscale dynamic sea surface features demonstrate the use of multi- sensor / multi-channel satellite images for the computation of mesoscale surface

  9. Using satellite remote sensing to quantify woody cover and biomass across Africa 

    E-Print Network [OSTI]

    Mitchard, Edward Thomas Alexander

    2012-06-25T23:59:59.000Z

    The goal of quantifying the woody cover and biomass of tropical savannas, woodlands and forests using satellite data is becoming increasingly important, but limitations in current scientific understanding reduce the ...

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

    SciTech Connect (OSTI)

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

    2014-02-01T23:59:59.000Z

    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.

  11. Retrieval of Non-Spherical Dust Aerosol Properties from Satellite Observations

    E-Print Network [OSTI]

    Huang, Xin

    2013-08-01T23:59:59.000Z

    An accurate and generalized global retrieval algorithm from satellite observations is a prerequisite to understand the radiative effect of atmospheric aerosols on the climate system. Current operational aerosol retrieval algorithms are limited...

  12. The European Satellite Navigation Program : policy analysis and recommendations for the future

    E-Print Network [OSTI]

    Escudero San José, Laura

    2011-01-01T23:59:59.000Z

    The European Satellite Navigation Program is a case study that combines Technical / Public / Private aspects in an integrative way. Therefore, it is a sound case for a TPP thesis candidate. This thesis analyzes the European ...

  13. MIMO active vibration control of magnetically suspended flywheels for satellite IPAC service

    E-Print Network [OSTI]

    Park, Junyoung

    2009-05-15T23:59:59.000Z

    Theory and simulation results have demonstrated that four, variable speed flywheels could potentially provide the energy storage and attitude control functions of existing batteries and control moment gyros (CMGs) on a satellite. Past modeling...

  14. Capabilities of satellite precipitation datasets to estimate heavy precipitation rates at different temporal accumulations

    E-Print Network [OSTI]

    AghaKouchak, Amir

    Artificial Neural Networks and CPC MORPHing (CMORPH) is compared against radar-based gauge-adjusted Stage IV on a more in-depth understanding of satellite errors and biases across different spatial and temporal scales

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

    SciTech Connect (OSTI)

    Meskhidze, Nicholas; Zhang, Yang; Kamykowski, Daniel

    2012-03-28T23:59:59.000Z

    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

  16. Spin Dynamics of the LAGEOS Satellite in Support of a Measurement of the Earth's Gravitomagnetism

    E-Print Network [OSTI]

    Salman Habib; Daniel E. Holz; Arkady Kheyfets; Richard A. Matzner; Warner A. Miller; Brian W. Tolman

    1994-06-20T23:59:59.000Z

    LAGEOS is an accurately-tracked, dense spherical satellite covered with 426 retroreflectors. The tracking accuracy is such as to yield a medium term (years to decades) inertial reference frame determined via relatively inexpensive observations. This frame is used as an adjunct to the more difficult and data intensive VLBI absolute frame measurements. There is a substantial secular precession of the satellite's line of nodes consistent with the classical, Newtonian precession due to the non-sphericity of the earth. Ciufolini has suggested the launch of an identical satellite (LAGEOS-3) into an orbit supplementary to that of LAGEOS-1: LAGEOS-3 would then experience an equal and opposite classical precession to that of LAGEOS-1. Besides providing a more accurate real-time measurement of the earth's length of day and polar wobble, this paired-satellite experiment would provide the first direct measurement of the general relativistic frame-dragging effect. Of the five dominant error sources in this experiment, the largest one involves surface forces on the satellite, and their consequent impact on the orbital nodal precession. The surface forces are a function of the spin dynamics of the satellite. Consequently, we undertake here a theoretical effort to model the spin ndynamics of LAGEOS. In this paper we present our preliminary results.

  17. International Trends in Green Building

    E-Print Network [OSTI]

    Zhang, Junshan

    International Trends in Green Building Friday, August 26, 2011 Registration 8:00 a.m. Presentation, Canada Green Building Council The presentation will cover international trends and innovations in the green-building industry as well as new opportunities for green-building collaboration with Arizona

  18. Evaluation of the Fogarty International

    E-Print Network [OSTI]

    Bandettini, Peter A.

    to consider helping to fund the successful FIRCAs from their grantees. Many of the ICs responded positively both to support their grantees' international collaborative research and encourage more international, grantees and reviewers over the years, FIC revamped the FIRCA program to meet the evolving needs

  19. International energy outlook 1999

    SciTech Connect (OSTI)

    NONE

    1999-03-01T23:59:59.000Z

    This report presents international energy projections through 2020, prepared by the Energy Information Administration. The outlooks for major energy fuels are discussed, along with electricity, transportation, and environmental issues. The report begins with a review of world trends in energy demand. The historical time frame begins with data from 1970 and extends to 1996, providing readers with a 26-year historical view of energy demand. The IEO99 projections covers a 24-year period. The next part of the report is organized by energy source. Regional consumption projections for oil, natural gas, coal, nuclear power, and renewable energy (hydroelectricity, geothermal, wind, solar, and other renewables) are presented in the five fuel chapters, along with a review of the current status of each fuel on a worldwide basis. The third part of the report looks at energy consumption in the end-use sectors, beginning with a chapter on energy use for electricity generation. New to this year`s outlook are chapters on energy use in the transportation sector and on environmental issues related to energy consumption. 104 figs., 87 tabs.

  20. Praxis compiler internals

    SciTech Connect (OSTI)

    Evans, A. Jr.

    1981-01-01T23:59:59.000Z

    Praxis is a high level machine-oriented algebraic computer language, designed by Bolt Beranek and Newman, Inc. (BBN) and intended for such applications as process control, communications, and system programming in general. Under contract to Lawrence Livermore National Laboratories (LLNL), BBN has implemented the following three compilers for Praxis: a VAX compiler, running on VAX and producing VAX code; a PDP-11 compiler, running on the PDP-11 and producing code for that machine; and a cross compiler, running on VAX and producing code for the PDP-11. The compilers are written in Praxis and so compile themselves. Further, most of the code is common to the three compilers. This document describes the internal operation of the compilers. The emphasis is on the major data bases and interfaces with little discussion of the details of algorithms, since the latter can readily be deduced from study of the listings providing that the data being manipulated are understood. The purpose of this document is to provide enough information to a maintenance staff that does not include the initial implementors so that they can maintain the compiler and make modifications as requirements change.

  1. Inside this Issue Changes to the International Vo

    E-Print Network [OSTI]

    ), the International Standardization Organization (ISO), and the International Electrotechnical Commission (IEC the International Bureau of Weights and Measures (BIPM), the International Organization of Legal Metrology (OIML cosponsoring organizations: the International Federation of Clinical Chemistry (IFCC), the International Union

  2. Office of the Assistant General Counsel for International and...

    Office of Environmental Management (EM)

    programs, international science and technology cooperation programs; international trade investment and procurement activities, and other DOE programs involving international...

  3. Version Auteur Monitoring the International Standardization Process

    E-Print Network [OSTI]

    Boyer, Edmond

    organizations are in charge of global security management. To address this issue, ISO (International Standards Organization), the main international organization for technical standardization, has launched a set of studiesVersion Auteur Monitoring the International Standardization Process Theoretical Choices

  4. The Impact of Inhomogeneous Reionization on the Satellite Galaxy Population of the Milky Way

    SciTech Connect (OSTI)

    Busha, Michael T.; Alvarez, Marcelo A.; Wechsler, Risa H.; Abel, Tom; Strigari, Louis E.; /KIPAC, Menlo Park; ,

    2009-08-03T23:59:59.000Z

    We use the publicly available subhalo catalogs from the via Lactea simulation along with a Gpc-scale N-body simulation to understand the impact of inhomogeneous reionization on the satellite galaxy population of the Milky Way. The large-volume simulation is combined with a model for reionization that allows us to predict the distribution of reionization times for Milky Way mass halos. Motivated by this distribution, we identify candidate satellite galaxies in the simulation by requiring that any subhalo must grow above a specified mass threshold before it is reionized; after this time the photoionizing background will suppress both the formation of stars and the accretion of gas. We show that varying the reionization time over the range expected for Milky Way mass halos can change the number of satellite galaxies by roughly two orders of magnitude. This conclusion is in contradiction with a number of studies in the literature, and we conclude that this is a result of inconsistent application of the results of Gnedin (2000); subtle changes in the assumptions about how reionization affects star formation in small galaxies can lead to large changes in the effect of changing the reionization time on the number of satellites. We compare our satellite galaxies to observations using both abundance matching and stellar population synthesis methods to assign luminosities to our subhalos and account for observational completeness effects. Additionally, if we assume that the mass threshold is set by the virial temperature T{sub vir} = 8 x 10{sup 3} K we find that our model accurately matches the vmax distribution, radial distribution, and luminosity function of observed Milky Way satellites for a reionization time z{sub reion} = 9.6{sub -2.1}{sup 1.0}, assuming that the via Lactea subhalo distribution is representative of the Milky Way. This results in the presence of 119{sub -50}{sup +202} satellite galaxies.

  5. Intern experience at Rockwell International: an internship report 

    E-Print Network [OSTI]

    Talley, Thomas James, 1945-

    2013-03-13T23:59:59.000Z

    Required ......................................................... 28 Information Required But Not Readily A v a i l a b l e ......................... 30 Adm inistrative and Managerial A c t iv it ie s ..................................... 30... INTERNATIONAL Rockwell International is a la rge , multinational organization. Probably best known as prime contractor on the space shu ttle , Rockwell i s a highly d iv e rs if ied company which is also involved in axle and valve manufacturing. Rockwell...

  6. Internal combustion engine system

    SciTech Connect (OSTI)

    Nam, C.W.

    1987-01-27T23:59:59.000Z

    This patent describes an internal combustion engine system comprising: an engine body including a main combustion engine for transmitting the power generated by explosion pressure to a pumping piston and a power transmission apparatus for transmitting to a power crank shaft power that is increased by the ratio of the cross-sectional area of a combustion chamber piston to a power piston. The stroke distance of the combustion chamber piston is equal to that of the power piston; a swash plate-type stirling engine coupled to an exhaust gas outlet of the main combustion engine to be driven by exhaust heat therefrom; a one-stage screw-type compressor coupled by a driving shaft to the swash plate-type stirling engine, thereby generating a great amount of compressed air; a turbo-charger mounted adjacent to a gas outlet of the stirling engine to force a supply of fresh air into the combustion chamber of the main combustion engine; a booster being mounted between a compressed air source and the power transmission apparatus to amplify the air pressure derived from the compressed air source and then provide the amplified air pressure to the power transmission apparatus by operation of a cam in accordance with the rotation of the first crankshaft; compressed air sources being mounted between the compressor and the booster for storing a great amount of compressed air from the compressor; and an accumulator in communication with the power transmission apparatus through a fluid oil pipe, thereby maintaining constant control of the oil pressure in the power transmission apparatus.

  7. Sandia National Laboratories: DOE International Energy Storage...

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

    International Energy Storage Database Has Logged 420 Energy Storage Projects Worldwide with 123 GW of Installed Capacity DOE International Energy Storage Database Has Logged 420...

  8. Sandia National Laboratories: Sandia Expands an International...

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

    ClimateECAbout ECFacilitiesCRFSandia Expands an International Collaboration and Web Database on Engine Fuel Spray Combustion Research Sandia Expands an International Collaboration...

  9. H2 Internal Combustion Engine Research

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    H 2 Internal Combustion Engine Research* H Internal Combustion Engine Research 2 Thomas Wallner Argonne National Laboratory 2008 DOE Merit Review Bethesda, Maryland February 25 th...

  10. International Framework for Nuclear Energy Cooperation (IFNEC...

    Energy Savers [EERE]

    International Framework for Nuclear Energy Cooperation (IFNEC) Expert meetings in Romania International Framework for Nuclear Energy Cooperation (IFNEC) Expert meetings in Romania...

  11. Standardization of Transport Properties Measurements: Internal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Transport Properties Measurements: Internal Energy Agency (IEA-AMT) Annex on Thermoelectric Standardization of Transport Properties Measurements: Internal Energy Agency...

  12. . . . . . 85 . . . . . International Deep Drawing Research Group

    E-Print Network [OSTI]

    . . . . . 85 . . . . . International Deep Drawing Research Group IDDRG 2009 International 20899-855 USA e-mail: mark.iadicola@nist.gov, Web page: www

  13. International Partnership for Geothermal Technology Launches...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    International Partnership for Geothermal Technology Launches Website International Partnership for Geothermal Technology Launches Website November 18, 2008 - 2:52pm Addthis...

  14. Sandia National Laboratories: Internal Combustion Engine Division...

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

    Internal Combustion Engine Division conference CRF Researchers Received "Best Paper" Award for Paper Presented at American Society of Mechanical Engineers' (ASME) 2012 Internal...

  15. Detection of the internal corrosion in pipeline

    E-Print Network [OSTI]

    2006-10-17T23:59:59.000Z

    Detection of the internal corrosion in pipeline. Hyeonbae Kang. In this talk I will explain our new methods to detect internal corrosions in pipelines.

  16. International Collaboration Activities in Different Geologic...

    Energy Savers [EERE]

    065InternationalCollabActivities2014 More Documents & Publications Status of UFD Campaign International Activities in Disposal Research Natural System Evaluation and Tool...

  17. 2nd International Hydrogen Infrastructure Challenges Webinar...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    nd International Hydrogen Infrastructure Challenges Webinar Slides 2nd International Hydrogen Infrastructure Challenges Webinar Slides Presentation slides from the Fuel Cell...

  18. International Development Studies Additional Requirement Form

    E-Print Network [OSTI]

    International Development Studies Additional Requirement Form The IDS additional program email. You may find additional scheduled possibilities by looking at the International Programs

  19. Vehicle Technologies Office: AVTA - Diesel Internal Combusion...

    Energy Savers [EERE]

    Vehicle Technologies Office: AVTA - Diesel Internal Combusion Engine Vehicles Vehicle Technologies Office: AVTA - Diesel Internal Combusion Engine Vehicles The Advanced Vehicle...

  20. Sandia National Laboratories: Solar Power International

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

    Solar Power International Sandia to host PV Bankability workshop at Solar Power International (SPI) 2013 On September 24, 2013, in Conferences, Energy, Events, News & Events,...

  1. Satellite Power Systems (SPS) space transportation cost analysis and evaluation

    SciTech Connect (OSTI)

    None

    1980-11-01T23:59:59.000Z

    The objective of this study is to provide a clear picture of SPS space transportation costs at the present time with respect to their accuracy as stated, the reasonableness of the methods used, the assumptions made, and the uncertainty associated with the estimates. The approach used consists of examining space transportation costs from several perspectives - to perform a variety of sensitivity analyses or reviews and examine the findings in terms of internal consistency and external comparison with analogous systems. These approaches are summarized as a theoretical and historical review including a review of stated and unstated assumptions used to derive the costs, and a performance or technical review. These reviews cover the overall transportation program as well as the individual vehicles proposed. The review of overall cost assumptions is the principal means used for estimating the cost uncertainty derived. The cost estimates used as the best current estimate are included.

  2. Internal Draft Do Not Disseminate

    E-Print Network [OSTI]

    Christian, Eric

    ............................................................................33 2.7 Use of Earned Value ManagementInternal Draft Do Not Disseminate NASA SPACE FLIGHT PROGRAM AND PROJECT MANAGEMENT HANDBOOK Office............................................................................................................................2 1.4 Overview of Management Process

  3. Design Editorial Globalization and Internationalism

    E-Print Network [OSTI]

    Papalambros, Panos

    ; especially, the development of an increasingly integrated global economy marked especially by free tradeJournal of Mechanical Design Editorial Globalization and Internationalism There has always been and Strabo, but to Friedman's empirical observations of globalization. According to Wikipedia, "globalization

  4. International Journal of Computer Science

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    International Journal of Computer Science & Information Security © IJCSIS PUBLICATION 2010 IJCSIS Journal of Computer Science and Information Security (IJCSIS) provides a major venue for rapid publication of high quality computer science research, including multimedia, information science, security, mobile

  5. Second United Nations International Conference

    Office of Scientific and Technical Information (OSTI)

    Second United Nations International Conference on the Peaceful Uses of Atomic Energy ON THE ANALYSIS O F BUBBLE CHAMBER TRACKS Q Hugh Bradner and F r a n k Solmitz INTRODUCTION A j...

  6. International Symposium on Discrete Mathematics

    E-Print Network [OSTI]

    University, China Ghent University, Belgium CAS-MPG Partner Institute for Computational Biology, ChinaInternational Symposium on Discrete Mathematics and Mathematical Biology August 26­27, 2013 Find Interdisciplinary Centre for Bioinformatics #12;

  7. Nepal's Crisis: Mobilising International Influence

    E-Print Network [OSTI]

    International Crisis Group

    2006-04-19T23:59:59.000Z

    Policy Briefing Asia Briefing N°49 Kathmandu/Brussels, 19 April 2006 Nepal’s Crisis: Mobilising International Influence I. OVERVIEW Pro-democracy demonstrations and a general strike across Nepal in recent weeks mark a decisive shift... institutions) to form a common front on strategy and tactics to maximise international influence in assisting Nepal’s escape from its worsening conflict. The conflict remains soluble and a genuine democratic mass movement increases the chances of a...

  8. An overview of the Nuclear Electric Propulsion Space Test Program (NEPSTP) satellite

    SciTech Connect (OSTI)

    Voss, S.S. [Los Alamos National Lab., NM (United States); Reynolds, E.L. [Applied Physics Laboratory, Laurel, MD (United States)

    1994-06-01T23:59:59.000Z

    Early in 1992 the idea of purchasing a Russian designed and fabricated space reactor power system and integrating it with a US designed satellite went from fiction to reality with the purchase of the first two Topaz II reactors by the Strategic Defense Initiative Organization (now the Ballistic Missile Defense Organization (BMDO). The New Mexico Alliance was formed to establish a ground test facility in which to perform nonnuclear systems testing of the Topaz II, and to evaluate the Topaz 11 system for flight testing with respect to safety, performance, and operability. In conjunction, SDIO requested that the Applied Physics Laboratory in Laurel, MD propose a mission and design a satellite in which the Topaz II could be used as the power source. The outcome of these two activities was the design of the Nuclear Electric Propulsion Space Test Program (NEPSTP) satellite which combines a modified Russian Topaz II power system with a US designed satellite to achieve a specified mission. Due to funding reduction within the SDIO, the Topaz II flight program was postponed indefinitely at the end of Fiscal Year 1993. The purpose of this paper is to present an overview of the NEPSTP mission and the satellite design at the time the flight program ended.

  9. Development of an all-composite spacecraft bus for small satellite programs

    SciTech Connect (OSTI)

    Thompson, T.C.; Grastataro, C.; Smith, B.G. [Los Alamos National Lab., NM (United States); Krumweide, G.; Tremblay, G. [Composite Optics Inc., San Diego, CA (United States)

    1994-09-01T23:59:59.000Z

    The Los Alamos National Laboratory (LANL) in partnership with Composite Optics Incorporated (COI) is advancing the development of low-cost, lightweight, composite technology for use in small satellites. The use of advanced composites in space applications is well developed but the application of an all-composite satellite bus has never been achieved. This paper investigates the application of composite technology to the design and fabrication of an all-composite spacecraft bus for small satellites. The satellite program Fast On-Orbit Recording of Transient Events (FORTE) is the second in a series of satellites to be launched into orbit for the US Department of Energy (DOE). The FORTE program objective is to record atmospheric bursts of electromagnetic radiation. This paper will discuss the issues of design, analysis, testing, and fabrication required to deliver the spacecraft and its associated components within a two-year period. The spacecraft will be launched into low earth orbit in late 1995 from a Pegasus-XL launch vehicle. Due to the extremely tight time constraints, a novel low-cost solution using graphite fiber reinforced plastics composites was required to achieve the performance goals of the mission. The details of material selection, characterization of design allowables, and the approach used in determining the structural geometry that will provide the optimum performance for this mission are presented.

  10. INTERNATIONAL RELATIONS &INTERNATIONAL RELATIONS &INTERNATIONAL RELATIONS & THE GLOBAL ECONOMYTHE GLOBAL ECONOMYTHE GLOBAL ECONOMY

    E-Print Network [OSTI]

    Krylov, Anna I.

    GLOBAL ECONOMYTHE GLOBAL ECONOMY This major offers students rigorous interdisciplinary training 331: The Global Economy 2030 -- Examination of key ideas from economics, demography and technology. Guest lecturers illuminate possible conditions of the global economy in 2030. IR 454: International

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

    E-Print Network [OSTI]

    Walsh, Shane; Jerjen, Helmut

    2008-01-01T23:59:59.000Z

    [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.

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

    E-Print Network [OSTI]

    Shane Walsh; Beth Willman; Helmut Jerjen

    2008-07-25T23:59:59.000Z

    [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.

  13. Quantum Cryptography for Secure Communications to Low-Earth Orbit Satellites

    SciTech Connect (OSTI)

    Hughes, R.J.; Buttler, W.T.; Kwiat, P.G.; Lamoreaux, S.K.; Morgan, G.L.; Peterson, C.G.; Twyeffort, E.; Simmons, C.M.; Nordholt, J.E.

    1999-06-03T23:59:59.000Z

    This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Quantum cryptography is an emerging technology in which two parties may simultaneously generate shared, secret cryptographic key material using the transmission of quantum states of light. The security of these transmissions is based on the inviolability of the laws of quantum mechanics. An adversary can neither successfully tap the quantum transmissions, nor evade detection. Key material is built up using the transmission of a single-photon per bit. We have developed an experimental quantum cryptography system based on the transmission of non-orthogonal single-photon polarization states to generate shared key material over line-of-sight optical links. Our results provide strong evidence that cryptographic key material could be generated on demand between a ground station and a satellite (or between two satellites), allowing a satellite to be securely re-keyed on in orbit.

  14. International Conference Synchrotron Radiation Instrumentation SRI `94

    SciTech Connect (OSTI)

    Not Available

    1994-10-01T23:59:59.000Z

    This report contains abstracts for the international conference on Synchrotron Radiation Instrumentation at Brookhaven National Laboratory.

  15. Evaluation of Clear Sky Models for Satellite-Based Irradiance Estimates

    SciTech Connect (OSTI)

    Sengupta, M.; Gotseff, P.

    2013-12-01T23:59:59.000Z

    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.

  16. Neutrino Solar Flare detection for a saving alert system of satellites and astronauts

    E-Print Network [OSTI]

    Fargion, Daniele

    2011-01-01T23:59:59.000Z

    Largest Solar Neutrino Flare may be soon detectable by Deep Core neutrino detector immediately and comunicate to satellites or astronauts. Its detection is the fastest manifestation of a later (tens minutes,hours) dangerous cosmic shower. The precursor trigger maybe saving satellites and even long flight astronauts lives. We shall suggest how. Moreover their detection may probe the inner solar flare acceleration place as well as the neutrino flavor mixing in a new different parameter windows. We show the updated expected rate and signature of neutrinos and antineutrinos in largest solar flare for present tens Megaton Deep Core telescope at tens Gev range. Speculation for additional Icecube gigaton array signals are also considered.

  17. Neutrino Solar Flare detection for a saving alert system of satellites and astronauts

    E-Print Network [OSTI]

    Daniele Fargion

    2011-06-19T23:59:59.000Z

    Largest Solar Neutrino Flare may be soon detectable by Deep Core neutrino detector immediately and comunicate to satellites or astronauts. Its detection is the fastest manifestation of a later (tens minutes,hours) dangerous cosmic shower. The precursor trigger maybe saving satellites and even long flight astronauts lives. We shall suggest how. Moreover their detection may probe the inner solar flare acceleration place as well as the neutrino flavor mixing in a new different parameter windows. We show the updated expected rate and signature of neutrinos and antineutrinos in largest solar flare for present tens Megaton Deep Core telescope at tens Gev range. Speculation for additional Icecube gigaton array signals are also considered.

  18. A comparison of model-generated and satellite-observed radiances

    E-Print Network [OSTI]

    Smith, Donna Ellen Woolley

    1989-01-01T23:59:59.000Z

    periods in January: Every 12 hours between 21 January at 12 GMT and 29 January at 00 GMT. 2. Ten time periods in May: Every 12 hours between 12 May at 12 GMT and 17 May at 00 GMT, B. TIROS-N HIRS/MSU Radiances Channel radiances used as ground truth... are discussed in Chapter IV. Detailed information is described by Smith et al. (1979). Satellite radiances are not observed synoptically at 00 GMT and 12 GMT. Therefore, measurements made during satellite passes within three hours of Sponsored...

  19. Comparison of Precision Orbit Derived Density Estimates for CHAMP and GRACE Satellites

    E-Print Network [OSTI]

    Fattig, Eric

    2011-04-21T23:59:59.000Z

    NOMENCLATURE Symbol Definition Units draga acceleration vector due to atmospheric drag m/s 2 ap geomagnetic 3-hourly planetary equivalent amplitude index gamma, Telsa, or kg s m-1 A satellite cross-sectional area m2 Ap geomagnetic daily planetary... amplitude index gamma, Telsa, or kg s m-1 BB estimated ballistic coefficient correction ~ BC ballistic coefficient m2/kg Dc satellite drag coefficient ~ d cross correlation delay F10.7 daily solar radio flux measured at 10.7 cm wavelength SFU 10.7F...

  20. On-orbit calibration of soft X-ray detector on Chang'E-2 satellite

    E-Print Network [OSTI]

    Hong Xiao; Wenxi Penga; Huanyu Wang; Xingzhu Cui; Dongya Guo

    2015-02-02T23:59:59.000Z

    X-ray spectrometer is one of the satellite payloads on Chang'E-2 satellite. The soft X-ray detector is one of the device on X-ray spectrometer which is designed to detect the major rock-forming elements within 0.5-10keV range on lunar surface. In this paper, energy linearity and energy resolution calibration is done using a weak Fe55 source, while temperature and time effect is considered not take big error. The total uncertainty is estimated to be within 5% after correction.

  1. On-orbit calibration of soft X-ray detector on Chang'E-2 satellite

    E-Print Network [OSTI]

    Xiao, Hong; Wang, Huanyu; Cui, Xingzhu; Guo, Dongya

    2015-01-01T23:59:59.000Z

    X-ray spectrometer is one of the satellite payloads on Chang'E-2 satellite. The soft X-ray detector is one of the device on X-ray spectrometer which is designed to detect the major rock-forming elements within 0.5-10keV range on lunar surface. In this paper, energy linearity and energy resolution calibration is done using a weak Fe55 source, while temperature and time effect is considered not take big error. The total uncertainty is estimated to be within 5% after correction.

  2. Ozone air quality measurement requirements for a geostationary satellite mission Peter Zoogman a,*, Daniel J. Jacob a,b

    E-Print Network [OSTI]

    Chance, Kelly

    Ozone air quality measurement requirements for a geostationary satellite mission Peter Zoogman a Accepted 23 May 2011 Keywords: Air quality Ozone Kalman filter Assimilation Remote sensing a b s t r a c satellite measurements of ozone in different spectral regions to constrain surface ozone concentrations

  3. Wind Fields over the Great Lakes Measured by the SeaWinds Scatterometer on the QuikSCAT Satellite

    E-Print Network [OSTI]

    Wind Fields over the Great Lakes Measured by the SeaWinds Scatterometer on the QuikSCAT Satellite for wind retrieval over the Great Lakes on a daily basis. We use data acquired by the SeaWinds Scatterometer on the QuikSCAT (QSCAT) satellite launched in June 1999 to derive wind speeds and directions over

  4. Rapid disintegration of Alpine glaciers observed with satellite data Frank Paul, Andreas Kaab, Max Maisch, Tobias Kellenberger, and Wilfried Haeberli

    E-Print Network [OSTI]

    Kääb, Andreas

    Rapid disintegration of Alpine glaciers observed with satellite data Frank Paul, Andreas Ka 12 November 2004. [1] Analyses of multispectral satellite data indicate accelerated glacier decline around the globe since the 1980s. By using digitized glacier outlines inferred from the 1973 inventory

  5. Radiometric Correctionradiometric correction Radiometric correction is important to ensure that terrestrial variables retrieved from optical satellite sensor

    E-Print Network [OSTI]

    Coburn, Craig

    that terrestrial variables retrieved from optical satellite sensor systems are calibrated to a common physical interactions. Radiometric corrections of optical sensor data consider sensor radiometric calibration, surface reflectance propagated through the atmosphere to the satellite sensor. Given that the optical properties

  6. A Field-Wise Wind Retrieval Algorithm for Satellite Scatterometers Charles G. Brown and David G . Long

    E-Print Network [OSTI]

    Long, David G.

    A Field-Wise Wind Retrieval Algorithm for Satellite Scatterometers Charles G. Brown and David G-378-6586 browncg@salt.ee.byii.edu Abstract-Traditional satellite scatterometer wind retrieval algorithms consist of point-wise wind estimation and point- wise ambiguity removal. Point-wise estimation yields mul- tiple

  7. Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben Ticha a,*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben accurate high spatial and temporal resolutions wind measurements. Offshore, satellite data are an accurate radar, scatterometer, data fusion, offshore wind energy resource assessment. 1. INTRODUCTION Since

  8. A study of the direct and indirect effects of aerosols using global satellite data sets of aerosol and cloud parameters

    E-Print Network [OSTI]

    Daniel, Rosenfeld

    regions consistent with the global mean statistics. However, the effective cloud particle radius showedA study of the direct and indirect effects of aerosols using global satellite data sets of aerosol between aerosol and cloud parameters derived from satellite remote sensing for evaluating the radiative

  9. International Pharmaceutical Abstracts (IPA) What is International Pharmaceutical Abstracts?

    E-Print Network [OSTI]

    Saskatchewan, University of

    topic into the search box. #12;2 2. Click on Search to continue. 3. Enter terms to describe another in your search results. "Or" broadens your search by letting you search for related terms or synonyms. #12-related health topics. Searching International Pharmaceutical Abstracts The example below illustrates a step

  10. Technology and international climate policy

    SciTech Connect (OSTI)

    Clarke, Leon; Calvin, Kate; Edmonds, James A.; Kyle, Page; Wise, Marshall

    2009-05-01T23:59:59.000Z

    Both the nature of international climate policy architectures and the development and diffusion of new energy technologies could dramatically influence future costs of reducing global emissions of greenhouse gases. This paper explores the implications of interactions between technology availability and performance and international policy architectures for technology choice and the social cost of limiting atmospheric CO2 concentrations to 500 ppm by the year 2095. Key issues explored in the paper include the role of bioenergy production with CO2 capture and storage (CCS), overshoot concentration pathways, and the sensitivity of mitigation costs to policy and technology.

  11. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERE, VOL. ???, XXXX1 Land Surface Wind Speed Probability Distributions in4

    E-Print Network [OSTI]

    Monahan, Adam Hugh

    of the fastest growing sources of renewable energy [Archer and65 Jacobson, 2005], which could potentially supply School of Earth and Ocean Science, University of Victoria, Victoria, BC,9 V8W3P6, Canada510 11 Adam Hugh Monahan12 School of Earth and Ocean Science, University of Victoria, Victoria, BC,13 V8W3P6, Canada714 15

  12. PUBLISHED ONLINE: 29 APRIL 2012 | DOI: 10.1038/NCLIMATE1505 Impacts of wind farms on land surface temperature

    E-Print Network [OSTI]

    Zhou, Liming

    LETTERS PUBLISHED ONLINE: 29 APRIL 2012 | DOI: 10.1038/NCLIMATE1505 Impacts of wind farms on land a region in west-central Texas, where four of the world's largest wind farms are located7 . Our results farms relative to nearby non-wind-farm regions. We attribute this warming primarily to wind farms as its

  13. Quantifying and relating land-surface and subsurface variability in permafrost environments using LiDAR and surface geophysical

    E-Print Network [OSTI]

    LiDAR and surface geophysical datasets S. S. Hubbard & C. Gangodagamage & B. Dafflon & H. Wainwright. Wullschleger Abstract The value of remote sensing and surface geophysical data for characterizing the spatial to extract geomorphic metrics, which potentially indicate drainage potential. Geophysical data were used

  14. Assessment of clear and cloudy sky parameterizations for daily downwelling longwave radiation over different land surfaces in

    E-Print Network [OSTI]

    meteorological data, resulting in reliable quantification of net radiation and evapotranspiration in FloridaAssessment of clear and cloudy sky parameterizations for daily downwelling longwave radiation over sky downwelling longwave radiation (Rldc) and cloudy sky downwelling longwave radiation (Rld) formulas

  15. Atmosphere-Land-Surface Interaction over the Southern Great Plains: Diagnosis of Mechanisms from SGP ARM Data

    SciTech Connect (OSTI)

    Sumant Nigam

    2013-02-01T23:59:59.000Z

    Work reported included analysis of pentad (5 day) averaged data, proposal of a hypothesis concerning the key role of the Atlantic Multi-decadal Oscillation in 20th century drought and wet periods over the Great Plains, analysis of recurrent super-synoptic evolution of the Great Plains low-level jet, and study of pentad evolution of the 1988 drought and 1993 flood over the Great Plains from a NARR perspective on the atmospheric and terrestrial water balance.

  16. 316 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 46, NO. 2, FEBRUARY 2008 Land Surface Emissivity Retrieval From

    E-Print Network [OSTI]

    Plaza, Antonio J.

    on differences in wavelength-dependent spectral features [1]. The recovery of from thermal infrared (TIR water vapor in the TIR region) and 2) the underdetermined nature of thermal measurements, in which are with the Global Change Unit, Department of Earth Physics and Thermodynamics, University of Valencia, 46100

  17. Improving land-surface model hydrology: Is an explicit aquifer model better than a deeper soil profile?

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    better than a deeper soil profile? , Geophys. Res. Lett. ,better than a deeper soil profile? Lindsey E. Gulden, 1flow: (1) a shallow soil profile that is characteristic of

  18. int. j. remote sensing, 2001, vol. 22, no. 11, 21712191 Characterizing land surface anisotropy from AVHRR data at a global

    E-Print Network [OSTI]

    Liang, Shunlin

    from AVHRR data at a global scale using high performance computing S. N. V. KALLURI*, Z. ZHANG, J. JA Re ectance Distribution Function (BRDF ) using high performance computing techniques. Three di the computational requirements and optimize the algorithm implementation using high performance computational

  19. ER2 Instrumentation and Measurements for CLASIC (Cloud Land Surface Interaction Campaign) June-2007 SGP {Author-Jimmy Voyles}

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work4/11 ENVIROISSUES PAGEMesoscopy andAbout Us »

  20. The ion experiment onboard the Interball-Aurora satellite; initial results on velocity-dispersed structures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The ion experiment onboard the Interball-Aurora satellite; initial results on velocity / Accepted: 10 March 1998 Abstract. The Toulouse ION experiment Żown on the Russian Interball-Aurora mission perform measurements in the energy range $10 eV±20 000 eV. The Interball- Aurora spacecraft was launched

  1. Simultaneous ground-satellite optical observations of postnoon shock aurora in the Southern Hemisphere

    E-Print Network [OSTI]

    California at Berkeley, University of

    Simultaneous ground-satellite optical observations of postnoon shock aurora in the Southern, a transient postnoon shock aurora, induced by an interplanetary (IP) shock, was observed simultaneously.3° magnetic latitude (MLAT), $15 magnetic local time). The global evolution of the shock aurora was identified

  2. Incorporating WAAS Data Into an Ionospheric Model for Correcting Satellite Radar

    E-Print Network [OSTI]

    Toews, Carl

    at the Millstone Hill Satellite Tracking Radar. She currently holds a joint appointment with the Atmospheric corrections to radar measurements, incorporating data from a single receiver to generate TEC estimates that the GRIMS ionospheric model degenerates during times of sharp spatial TEC gradients, e.g. during geomagnetic

  3. Power line harmonic radiation observed by satellite: Properties and propagation through the ionosphere

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation observed by satellite: Properties and propagation through of power line harmonic radiation events observed by the low-altitude DEMETER spacecraft. Altogether, 88 with the largest intensities often occur off exact multiples of base power system frequency. This can be explained

  4. Using Satellite Data with on Site Measurements to Create Estimates of Biomass as a Baseline for

    E-Print Network [OSTI]

    Alabama in Huntsville, University of

    The sequestration of carbon has become a key interest in Central and South American countries due to the vast amount of forested land in these regions. In order to place monetary value on carbon stocks there must be viable. of using radar satellite imagery to measure carbon levels in tropical forests. This technique is important

  5. Global analysis of satellite tracking data shows that adult green turtles are

    E-Print Network [OSTI]

    for Ecology and Conservation, Tremough Campus, University of Exeter, Penryn, Cornwall TR10 9EZ, UK. E-mail: b.j.godley , L. Pet-Soede11 , Kellie Pendoley12 , Peter B. Richardson1,13 , Alan F. Rees1,14 & Brendan J. Godley1 megavertebrate, Marine Protected Area, satellite tracking, sea turtle. *Correspondence: Brendan J. Godley, Centre

  6. Satellite constraints of nitrogen oxide (NOx) emissions from India based on OMI observations and WRFChem simulations

    E-Print Network [OSTI]

    Haak, Hein

    , and economic growth in India and attracted the attention of researchers and policy makers [Garg et al., 2001Satellite constraints of nitrogen oxide (NOx) emissions from India based on OMI observations emission inventory for India for 2005 using an inverse technique and iterative procedure. We used OMI

  7. Aerosol-cloud radiative effects from passive satellite instruments Mar%n de Graaf

    E-Print Network [OSTI]

    Graaf, Martin de

    Graaf Global annual mean Earth's energy budget for March 2000 ­ May 2004 (Wm2) [Trenberth et al. 2009 Satellite measurements of absorbing aerosols Reflectance Difference Method Cloud modelling Results Outlook] Global energy budget #12;Absorbing Aerosol Workshop, 15 October2013, Leipzig Aerosol effects over clouds

  8. Reply to Quaas et al.: Can satellites be used to estimate indirect climate forcing by aerosols?

    SciTech Connect (OSTI)

    Penner, J. E.; Zhou, Cheng; Xu, Li; Wang, Minghuai

    2011-11-15T23:59:59.000Z

    We welcome the comments by Quaas et al. (1). In our paper (2), we used a model to show that the methods used to estimate indirect aerosol forcing using satellite data, especially those based on relating the slope of present-day (PD) drop number (Nc) to aerosol optical depth (AOD), underestimate the forcing calculated when both PD and preindustrial (PI) data are available.

  9. Providing Integrity for Satellite Navigation: Lessons Learned (Thus Far) from the Financial

    E-Print Network [OSTI]

    Stanford University

    Providing Integrity for Satellite Navigation: Lessons Learned (Thus Far) from the Financial], the goal is to learn lessons from this experience that can improve the way that risk is assessed directly to the worldwide financial crisis of 2008 - 2009 and identifies lessons that are applicable

  10. The ozone response to ENSO in Aura satellite measurements and a chemistry-climate simulation

    E-Print Network [OSTI]

    Waugh, Darryn W.

    The ozone response to ENSO in Aura satellite measurements and a chemistry-climate simulation Luke D impact on tropospheric circulation causes significant changes to the distribution of ozone. Here we derive the lower tropospheric to lower stratospheric ozone response to ENSO from observations

  11. GRAPH-BASED METHOD FOR MULTITEMPORAL SEGMENTATION OF SEA ICE FLOES FROM SATELLITE DATA

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the Arc- tic sea ice pack in December 2007, continuously moved with the Arctic ocean currents and meltedGRAPH-BASED METHOD FOR MULTITEMPORAL SEGMENTATION OF SEA ICE FLOES FROM SATELLITE DATA Claudio, MODIS, Sea Ice Floes. ABSTRACT: Automated segmentation of the sea ice evolution would allow scientists

  12. PROGRESSIVE CLASSIFICATION IN THE COMPRESSED DOMAIN FOR LARGE EOS SATELLITE DATABASES1

    E-Print Network [OSTI]

    Kontoyiannis, Ioannis

    PROGRESSIVE CLASSIFICATION IN THE COMPRESSED DOMAIN FOR LARGE EOS SATELLITE DATABASES1 Vittorio and Signal Processing, Atlanta, GA, May 1996. ABSTRACT We introduce a new framework for classifying large-by-pixel approach. This approach, called progressive classi cation, is well suited for analyzing large images

  13. PROGRESSIVE CLASSIFICATION IN THE COMPRESSED DOMAIN FOR LARGE EOS SATELLITE DATABASES 1

    E-Print Network [OSTI]

    Kontoyiannis, Ioannis

    PROGRESSIVE CLASSIFICATION IN THE COMPRESSED DOMAIN FOR LARGE EOS SATELLITE DATABASES 1 Vittorio for classifying large images that is more accurate and less computationally expensive than the classical pixel­by­pixel approach. This approach, called progressive classification, is well suited for analyzing large images

  14. Space Communications 21 (2007/2008) 6982 69 Satellite system performance assessment for

    E-Print Network [OSTI]

    Mailhes, Corinne

    for In-Flight Entertainment and Air Traffic Control José Radzik a,, Alain Pirovano b , Na Tao b. At the same time, an increasing interest in the use of satellite communications for ATC (Air Traffic Control-term perspective. The objective of the presented system design is to provide both passenger application traffic

  15. Deployable Tensegrity Reflectors for Small Satellites1 A.G. Tibert2 and S. Pellegrino3

    E-Print Network [OSTI]

    Pellegrino, Sergio

    of Cambridge, Trumpington Street, Cambridge, CB2 1PZ, U.K. Abstract Future small satellite missions require low-cost, precision reflector structures with large aperture that can be packaged in a small envelope. Existing that deploys two identical cable nets (front and rear nets) interconnected by tension ties; the reflecting mesh

  16. THE SURFACE ALBEDO OF THE VATNAJ OKULL ICE CAP, ICELAND: A COMPARISON BETWEEN SATELLITE-

    E-Print Network [OSTI]

    Haak, Hein

    is composed for the summer of 1996 using satellite radiance measurements from the Advanced Very High Resolution Radiometer (AVHRR). This time series is compared with ground measurements carried out during is usually to a large extent determined by the summer energy balance (see e.g. Ambach(1963) for the central

  17. Aerosol radiative forcing and the accuracy of satellite aerosol optical depth retrieval

    E-Print Network [OSTI]

    ) of the AVHRR (Advanced Very High Resolution Radiometer) is typically between 0.06 and 0.15, while the RMSE between t = 0.1 and t = 0.8. The Department of Energy research satellite instrument, the Multispectral aerosol radiative forcing are known, the predictions of future global warming may remain unacceptably high

  18. VISUAL EXPLORATION OF SATELLITE IMAGES Jurgen Symanzik , Louise Gri ths, Robert R. Gillies, Utah State University.

    E-Print Network [OSTI]

    Symanzik, JĂĽrgen

    by the Advanced Very High Resolution Radiometer (AVHRR) sensor aboard a NOAA{14 polar orbit- ing satellite from to urban structures on the local and re- gional climate, surface energy uxes, and air quality center for the southeast- ern United States. The land{atmosphere energy bal- ance of the area has changed

  19. Interpolation of surface radiative temperature measured from polar orbiting satellites to a diurnal cycle

    E-Print Network [OSTI]

    Jin, Menglin

    . Instruments on polar orbiting satellites, such as advanced very high resolution radiometer (AVHRR) or Moderate. This approach is based on the surface energy balance with the soil heat flux being treated by a conventional in temperate and tropical regions, observed empirical relationships between solar radiative energy and skin

  20. RESEARCH ARTICLE Time series analysis of infrared satellite data for detecting

    E-Print Network [OSTI]

    Wright, Robert

    successfully detected ther- mal anomalies in TIR data from the Advanced Very High Resolution Radiometer (AVHRR algorithm that analyzes thermal infrared satellite time series data to detect and quantify the excess energy. These instruments provide data over potentially dangerous, high-temperature phenomena, such as volcanic eruptions

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

    E-Print Network [OSTI]

    Perez, Richard R.

    VALIDATION OF PV PERFORMANCE MODELS USING SATELLITE-BASED IRRADIANCE MEASUREMENTS: A CASE STUDY Clean Power Research Kirkland, WA e-mail: aparkins@cleanpower.com ABSTRACT Photovoltaic (PV) system and existing PV systems under a wide variety of environmental conditions. Ground based meteorological

  2. WATER AND ENERGY BALANCE ESTIMATION IN PUERTO RICO USING SATELLITE REMOTE SENSING

    E-Print Network [OSTI]

    Gilbes, Fernando

    WATER AND ENERGY BALANCE ESTIMATION IN PUERTO RICO USING SATELLITE REMOTE SENSING Eric. W Management of water resources relies on estimates of the hydrologic water balance within defined and/or similar land use. Components of the water balance include precipitation, actual

  3. From Measurements to Models: What Satellite and Sub-Orbital Instruments

    E-Print Network [OSTI]

    uncertainty upper bounds for ~1 W/m2 TOA DARF accuracy: ~ 0.02 CCSP - SAP 2.3, 2009 #12;Aerosol-location time series Regional Context R. Kahn #12;The NASA Earth Observing System's Terra Satellite ASTER First Light: February 24, 2000 MODIS CERES MISR MOPITT Terra Project Office / NASA Goddard Space Flight Center

  4. Satellite observations of Mexico City pollution outflow from the Tropospheric Emissions Spectrometer (TES)

    E-Print Network [OSTI]

    Satellite observations of Mexico City pollution outflow from the Tropospheric Emissions 12 November 2008 Keyword: Mega-city pollution TES O3­CO correlation INTEX-B Mexico city a b s t r a c regions were used to examine Mexico City pollution outflow on a regional scale. The pollution outflow from

  5. CROSS VALIDATION OF SATELLITE RADIATION TRANSFER MODELS DURING SWERA PROJECT IN BRAZIL

    E-Print Network [OSTI]

    Heinemann, Detlev

    CROSS VALIDATION OF SATELLITE RADIATION TRANSFER MODELS DURING SWERA PROJECT IN BRAZIL Enio B-970, SP, Brazil. Phone + 55 12 39456741, Fax + 55 12 39456810, fernando@dge.inpe.br. Samuel L. Abreu, Hans, Federal University of Santa Catarina -UFSC, Florianópolis, 88040-900, (SC), Brazil. Richard Perez

  6. Vision Based Navigation with an Experimental Satellite Konrad Makowka, Alvar Saenz-Otero, David W. Miller

    E-Print Network [OSTI]

    -Otero, David W. Miller January 2012 SSL # 2-12 #12;#12;Page I Vision Based Navigation with an Experimental Satellite Testbed Konrad Makowka, Alvar Saenz-Otero, David W. Miller January 2012 SSL # 2-12 This work at Massachusetts Institute of Technology (MIT) Space Systems Laboratory (SSL). First, an application programming

  7. A satellite-based biosphere parameterization for net ecosystem CO2 exchange: Vegetation Photosynthesis and Respiration

    E-Print Network [OSTI]

    Lin, John Chun-Han

    Photosynthesis and Respiration Model (VPRM) Pathmathevan Mahadevan,1 Steven C. Wofsy,1 Daniel M. Matross,1 12 April 2008. [1] We present the Vegetation Photosynthesis and Respiration Model (VPRM), a satellite of ecosystem photosynthesis, and annual sum of NEE at all eddy flux sites for which it is optimized

  8. Toshiba recommends Windows 7 Satellite P755-0M6

    E-Print Network [OSTI]

    Saskatchewan, University of

    .7 million colours Graphics Controller NVIDIA GeForce GT 520M 1GB (DDR3)-Dedicated Graphics - up to 3793MB (64bit OS) dynamically allocated shared graphics memory with 6GB of system memory. Sound System-Operating: 1G Environmental Credentials Energy Star 5.0 RoHS Warranty This Satellite notebook comes with a one

  9. Time series modeling and large scale global solar radiation forecasting from geostationary satellites data

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Time series modeling and large scale global solar radiation forecasting from geostationary global solar radiation. In this paper, we use geostationary satellites data to generate 2-D time series of solar radiation for the next hour. The results presented in this paper relate to a particular territory

  10. Satellite-Based Techniques for the Retrieval of Solar Radiation Data A Review of Current European

    E-Print Network [OSTI]

    Heinemann, Detlev

    Satellite-Based Techniques for the Retrieval of Solar Radiation Data ­ A Review of Current European of solar radiation (clouds, water vapor, aerosols, ozone) through the use of twelve spectral radiometer of application- specific solar radiation data. Especially the integration into energy structures makes

  11. National Aeronautics and Space Administration The Hinode satellite was launched on September 22, 2006 and

    E-Print Network [OSTI]

    on September 22, 2006 and began taking images of the sun through x-ray light. The goal was to study the intense 10 Hot Gas and Cold Gas 9 - 11 11 Using the Doppler Shift to Study Gas Motions 9 - 11 12 Spectroscopy to be authentic glimpses of modern science and engineering issues that come up in designing satellites to work

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

    E-Print Network [OSTI]

    Perez, Richard R.

    ENERGY APPLICATIONS Tomás Cebecauer GeoModel, s.r.o. Pionierska 15 841 07 Bratislava, Slovakia tomas terrain affects exploitation of solar energy. In this article we present innovative features of MSG© ASES ­ Proc. Solar 2010, Phoenix, AZ HIGH PERFORMANCE MSG SATELLITE MODEL FOR OPERATIONAL SOLAR

  13. Q-Winds satellite hurricane wind retrievals and H*Wind comparisons

    E-Print Network [OSTI]

    Hennon, Christopher C.

    of the hurricane surface winds from NOAA and U.S. Air Force Weather Squadron aircraft flights. Further, results1 Q-Winds satellite hurricane wind retrievals and H*Wind comparisons Pet Laupattarakasem and W This paper presents a new hurricane ocean vector wind (OVW) product known as Q-Winds produced from the SeaWinds

  14. Wind resources and wind farm wake effects offshore observed from satellite

    E-Print Network [OSTI]

    Wind resources and wind farm wake effects offshore observed from satellite Charlotte Bay Hasager to quantify the wake effect at two large offshore wind farms in Denmark. It is found that the wake velocity further. There is fast progress on planning and installation of offshore wind farms in the European waters

  15. Tuesday, March 13, 2007 POSTER SESSION I: GALILEAN SATELLITES: GEOLOGY AND MAPPING

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Tuesday, March 13, 2007 POSTER SESSION I: GALILEAN SATELLITES: GEOLOGY AND MAPPING 6:30 p. Geissler P. Jaeger W. Becker T. Crown D. A. Schenk P. Geologic Mapping of the Polar Regions of Io [#1124] This abstract discusses our results from geologic mapping of the polar regions of Jupiter's moon Io using

  16. Findings on rings and inner satellites of Saturn of Pioneer 11

    SciTech Connect (OSTI)

    Van Allen, J.A.

    1982-09-01T23:59:59.000Z

    The introductory part of this paper gives a short account of the theory of absorption by planetary rings and satellites of energetic charged particles that are trapped in a planet's magnetic field and describes the observable consequences of such absorption processes. The previously published University of Iowa observations of absorption features during Pioneer 11's passage through Saturn's inner radiation belt on 1 September 1979 are critically reanalyzed and related to other evidence on rings and satellites inside 2.9 Saturn radii, especially that from the imaging system on Voyagers 1 and 2. It is found (a) that satellites 1979 S1, 1979 S2, and 1980 S3 are almost certainly identical (b) that the evidence for 1979 S4 is weak to nonexistent (c) that 1979 S5 and two other nearby absorption features and 1979 S6 and one other nearby absorption feature are probably caused by longitudinal and radial structure of Ring F and not by satellites and (d) that absorption feature 1979 S3 at 169,200 + or - 600 km is identified with the optically observed Ring G.

  17. Annual satellite imaging of the world's glaciers Assessment of glacier extent and change

    E-Print Network [OSTI]

    GLIMS HIGH ICE Annual satellite imaging of the world's glaciers Assessment of glacier extent and change Development and population of a digital glacier data inventory #12;Glaciers of High Asia: Where was a debris-covered glacier near Mt. Everest J.S. Kargel, April 2001 #12;Gangotri Glacier, India #12;A. Kääb

  18. Annual satellite imaging of the world's glaciers Assessment of glacier extent and change

    E-Print Network [OSTI]

    GLIMS HIGH ICE Annual satellite imaging of the world's glaciers Assessment of glacier extent and change Development and population of a digital glacier data inventory #12;Skeletal remains of what was a debris-covered glacier near Mt. Everest J.S. Kargel, April 2001 #12;#12;#12;Global Land Ice Measurements

  19. Surface motion of mountain glaciers derived from satellite optical imagery E. Berthiera,*, H. Vadonb

    E-Print Network [OSTI]

    Berthier, Etienne

    Surface motion of mountain glaciers derived from satellite optical imagery E. Berthiera,*, H Abstract A complete and detailed map of the ice-velocity field on mountain glaciers is obtained by cross the displacements of glaciers. The methodology presented in this study does not require ground control points (GCPs

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Contribution of Alaskan glaciers to sea-level rise derived from satellite imagery BERTHIER E.1: Berthier E., Schiefer E., Clarke G.K.C., Menounos B. & Remy, F. Contribution of Alaskan glaciers to sea.1038/ngeo737 #12;2 Over the past 50 years, retreating glaciers and ice caps contributed 0.5mm yr-1 to sea