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Note: This page contains sample records for the topic "modis airborne simulator" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

SAFARI 2000 MODIS Airborne Simulator Data  

NLE Websites -- All DOE Office Websites (Extended Search)

Airborne Simulator Data Airborne Simulator Data The ORNL DAAC announces the release of a new SAFARI 2000 data set. The data set "SAFARI 2000 MODIS Airborne Simulator Data, Southern Africa, Dry Season 2000" contains MODIS Airborne Simulator (MAS) multispectral data collected during the SAFARI 2000 project. Twenty flights with the MAS instrument were undertaken over Southern Africa by the NASA ER-2 aircraft during August and September 2000. The MAS spectrometer collects 50 multispectral bands at 16-bit resolution with a ground resolution of 50 meters from 20,000 meters altitude and a cross track scan width of 85.92 degrees. This data set is organized by flight, and each flight consists of several straight-line segments called tracks. There is a MAS multispectral data file for each track. The data are available in Hierarchical Data Format

2

A Study of the Characteristics and Assimilation of Retrieved MODIS Total Precipitable Water Data in Severe Weather Simulations  

Science Conference Proceedings (OSTI)

This study determined the accuracy and biases associated with retrieved Moderate Resolution Imaging Spectroradiometer (MODIS) total precipitable water (TPW) data, and it investigated the impact of these data on severe weather simulations using ...

Shu-Hua Chen; Zhan Zhao; Jennifer S. Haase; Aidong Chen; Francois Vandenberghe

2008-09-01T23:59:59.000Z

3

The Influence of Airborne Doppler Radar Data Quality on Numerical Simulations of a Tropical Cyclone  

Science Conference Proceedings (OSTI)

The impact of airborne Doppler radar data assimilation on improving numerical simulations of tropical cyclones (TCs) has been well recognized. However, the influence of radar data quality on the numerical simulation of tropical cyclones has not ...

Lei Zhang; Zhaoxia Pu; Wen-Chau Lee; Qingyun Zhao

2012-02-01T23:59:59.000Z

4

Synthetic IR Scene Simulation of Air-borne Targets  

E-Print Network (OSTI)

IR scenes of high fidelity are needed to support the development and testing of various target detection and tracking techniques. It is impractical to test detection and tracking algorithms under all conceivable conditions. Therefore, to test the effectiveness of detection and tracking algorithms under variety of scenarios, synthetic IR scenes are generated. For air-borne targets, the presence of clouds plays an important role, since they affect most IR sensors. We propose, a mod- ification of original Gardner's Method [3], in order to generate clouds of richer spectral content. We also ex- plore an algorithm based on self-similarity [5] for cloud texture generation. Synthetic IR cloud images generated by our scene simulation software are radiometrically accurate and have typical cloud texture variations. We use Modtran J.O for radiometric calculation and VRML (Virtual Reality Modeling Language) for scene rendering.

Shankar T. More; Avinash A. Pandit; Avinash A. P; S. N. Merchant; U. B. Desai

2002-01-01T23:59:59.000Z

5

Assessment of the Quality of MODIS Cloud Products from Radiance Simulations  

Science Conference Proceedings (OSTI)

Observations made by the Moderate Resolution Imaging Spectroradiometer (MODIS), the Atmospheric Infrared Sounder (AIRS), the Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO), and CloudSat are synergistically used to ...

Seung-Hee Ham; Byung-Ju Sohn; Ping Yang; Bryan A. Baum

2009-08-01T23:59:59.000Z

6

Simulator Evaluation of Airborne Information for Lateral Spacing (AILS) Concept  

Science Conference Proceedings (OSTI)

The Airborne Information for Lateral Spacing (AILS) concept is designed to support independent parallel approach operations to runways spaced as close as 2500 ft. This report describes the AILS operational concept and the results of a ground-based flight ...

Abbott Terence S.; Elliott Dawn M.

2001-03-01T23:59:59.000Z

7

A Study of Air Quality in the Southeastern Hampton–Norfolk–Virginia Beach Region with Airborne Lidar Measurements and MODIS Aerosol Optical Depth Retrievals  

Science Conference Proceedings (OSTI)

A study of air quality was performed using a compact, aircraft aerosol lidar designed in the Science Directorate at NASA Langley Research Center and Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) retrievals. ...

Jasper Lewis; Russell De Young; D. Allen Chu

2010-01-01T23:59:59.000Z

8

Principal Component Image Analysis of MODIS for Volcanic Ash. Part II: Simulation of Current GOES and GOES-M Imagers  

Science Conference Proceedings (OSTI)

In Part I of this paper the infrared bands of the Moderate Resolution Imaging Spectroradiometer (MODIS) were analyzed using principal component image analysis for volcanic ash signals. The analyses performed determined that several of the thermal ...

Donald W. Hillger; James D. Clark

2002-10-01T23:59:59.000Z

9

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

ORNL DAAC MODIS Land Product Subsets MODIS Collection 5 Global Subsetting and Visualization Tool Create subset for user selected site, area, product, and time period. Data for...

10

MODIS Land Product Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Validation > MODIS Land Subsets Validation > MODIS Land Subsets MODIS Land Product Subsets Overview Earth, Western Hemisphere The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products and to characterize field sites. Output files contain pixel values of MODIS land products in text format and in GeoTIFF format. In addition, data visualizations (time series plots and grids showing single composite periods) are available. MODIS Land Product Subsets Resources The following MODIS Land Product Subsets resources are maintained by the ORNL DAAC: MODIS Land Products Offered Background Citation Policy Methods and formats MODIS Sinusoidal Grid - Google Earth KMZ Classroom Exercises

11

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

MODIS ASCII Subset Products - FTP Access MODIS ASCII Subset Products - FTP Access All of the MODIS ASCII Subsets are available from the ORNL DAAC's ftp site. The directory structure of the ftp site is based on the abbreviated names for the MODIS Products. Terra MODIS products are abbreviated "MOD", Aqua MODIS products are abbreviated "MYD" and combined Terra and Aqua MODIS products are abbreviated "MCD". The abbreviated names also include the version number (also known as collection). For specific products, please refer to the following table: Product Acronym Spatial Resolution Temporal Frequency Terra V005 SIN Aqua V005 SIN Terra/Aqua Combined V005 SIN Surface Reflectance SREF 500 m 8 day composites MOD09A1 MYD09A1 ---------- Land Surface Temperature and Emissivity TEMP 1 km 8 day composites MOD11A2 MYD11A2 ----------

12

The Multiple Altimeter Beam Experimental Lidar (MABEL): An Airborne Simulator for the ICESat-2 Mission  

Science Conference Proceedings (OSTI)

This paper presents the motivation for, and initial results from, the Multiple Altimeter Beam Experimental lidar (MABEL) instrument. The MABEL instrument provides a new capability for airborne altimetry measurements and serves as a prototype and ...

Matthew McGill; Thorsten Markus; V. Stanley Scott; Thomas Neumann

2013-02-01T23:59:59.000Z

13

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Data for Selected Field Sites (n=1147) Data for Selected Field Sites (n=1147) Obtain MODIS data for areas centered on selected field sites or flux towers from around the world. The goal of the MODIS Subsets for Selected Field Sites is to prepare summaries of selected MODIS Land Products for the community to use for validation of models and remote sensing products and to characterize field sites. Search for data: By Site from a Map Server from Google Earth (Install Google Earth) From FTP site (ASCII) Methods Data products were first subsetted from one or more 1200x1200-km MODIS tiles to 25 x 25-km arrays by the MODIS Science Data Support Team (MODAPS). These products were further subsetted (7x7) and reformatted from their native HDF-EOS to ASCII using version 2.2 of the MODIS Reprojection Tool (MRT) in combination with code developed at the ORNL DAAC.

14

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Citation When using subsets of MODIS Land Products from the ORNL DAAC, please use the citation: Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC). 2011....

15

MODIS ASCII Subsets Available  

NLE Websites -- All DOE Office Websites (Extended Search)

ASCII Subsets Available ASCII Subsets Available The ORNL DAAC announces the availability of subsets from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor for 274 field sites. These subsetted products, which are in ASCII format for a 7 x 7 km area centered on the field sites, are especially useful for tracking seasonal dynamics. Please see http://www.fluxnet.ornl.gov/fluxnet/modis.cfm for details. Weekly MODIS Land Products from MODIS sensors onboard the Terra and Aqua platforms include the following: -Leaf Area Index and Fraction of Photosynthetically Absorbed Radiation (LAI/fPAR, MOD15A2, MYD15A2), -Normalized Difference Vegetation Index and Enhanced Vegetation Index (NDVI/EVI, MOD13A2, MYD13A2), -Gross Primary Productivity (GPP, MOD17A2, MYD17A2), -Net Primary Productivity (NPP, MOD17A3, MYD17A2),

16

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Introduction Introduction Collection 5 The MODIS data from the Terra and Aqua satellites are being reprocessed using revised algorithms beginning in September 2006. This new set of MODIS Products is called Collection 5. To view the product changes that took place in going from Collection 4 to Collection 5, please visit the following Web site: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=MODLAND_C005_changes The ORNL DAAC provides subsets of the Collection 5 MODIS Land Products. Investigators from around the world have shown a great deal of interest in this activity, asking that over 1000 field and flux tower sites be included in Collection 5 subsetting (up from 280 sites for Collection 4 MODIS subsetting). Availability of the Collection 5 Data Products

17

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Geography of the MODIS Land Subsets for selected Field Sites Geography of the MODIS Land Subsets for selected Field Sites The 7- x 7-km grid containing the field or tower site is provided to enable comparison of pixel values of MODIS products with field data collected at a site. The values are intended to be examined over time either as a collection of individual values or combined (e.g., the average and range) within a 3- x 3-km grid or a 5- x 5-km grid around the site. Examples of analyses using the ASCII subset data can be found in presentations. If users would like to examine the MODIS data spatially in a map, we suggest that they obtain the GeoTIFF subsets or MODIS products from the LP DAAC. Please note that the grid and pixel sizes are not exact multiples of 1 km, but are only approximations. For instance, the grid and pixel size for the 1 km Sinusoidal grid is approximately 926 m. For additional information, please view the MODIS Web site.

18

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Presentations Presentations Web and Web Services based tool that provides Subsets and Visualization of MODIS land products to facilitate land validation and field site characterization. S.K. Santhana Vannan; R. B. Cook; B. E. Wilson. AGU Fall Meeting, San Francisco, CA, December 14-18 2009 MODIS Land Product Subsets,S.K. Santhana Vannan; R. B. Cook. November, 2009 MODIS Web Service, S.K. Santhana Vannan. ORNL DAAC UWG Meeting, May 2009 Subsetting Tools for MODIS Land Products: Time-series data for field sites, R. B. Cook, S. M. Margle, S. K. Santhana Vannan, S. K. Holladay, and T. W. Beaty. Global Vegetation Workshop, Missoula MT, August 8-10, 2006 MODIS ASCII Subsets, R. B. Cook. May 2006 Subsets of Remote Sensing Products for AmeriFlux Sites: MODIS ASCII Subsets, AmeriFlux Annual Meeting, R. B. Cook, S. M. Margle, S. K. Holladay, F. A. Heinsch, and C. B. Schaaf. October 5-7, 2004, Boulder, Colorado

19

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Introduction Introduction The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products, and to characterize field sites. The MODIS Land Product Subsets are derived from MODIS products that were generated with Collection 4 or later algorithms. Please be advised that these products are subject to continual review and revision. The MODIS land product subsets are provided in ASCII and GeoTIFF format. The subsets are stored as individual text(ASCII) files, each file represents one field site and one MODIS product.The ASCII data covers 7x7 km of the field site. These ASCII files contain comma-delimited rows of parameter values (image bands) for each pixel in the selected area. Each row in the file will contain data from one 8-day, 16-day, or annual period (depending on the temporal frequency of the data product represented).

20

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Use of MODIS Subsetting Tool in the Classroom Use of MODIS Subsetting Tool in the Classroom Please contact the professors before using their exercises in your class. If you create a new classroom exercise or script that utlize the ORNL DAAC MODIS subsetting tools please consider contributing to the list. Hongjie Xie Associate Professor Director of Remote Sensing and Geoinformatics Lab Department of Geological Sciences University of Texas at San Antonio Hongjie.Xie@utsa.edu http://www.utsa.edu/LRSG/ Lab Exercise 1 Lab Exercise 2 David Roy Senior Scientist, Professor of Geography Geographic Information Science Center of Excellence South Dakota State University david.roy@sdstate.edu http://globalmonitoring.sdstate.edu/faculty/roy/roy.html Lab Exercise James T. Randerson Professor Department of Earth System Science

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


21

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

methods methods This section describes methods used to generate MODIS Land Subsets for Collection 4 and Collection 5 data products. Methods for Selected Sites (Collections 4 and 5) Methods for North America Tool (Collection 4) Methods for the Global Tool (Collection 5) Methods for Selected Sites (Collection 4 and 5) Source for Selected Site Data: Full MODIS scenes (1200-km x 1200-km) are initially subset to 11-km x 31-km (Collection 4) or 25-km x 25-km (Collection 5) by the MODAPS; these initial subsets contain the field site or flux tower. Reformatting and additional subsetting to 7-km x 7-km containing the field site or flux tower are done by the ORNL DAAC. Tools Used: The ORNL DAAC uses the MODIS Reprojection Tool (MRT) to reformat the MODIS data from HDF-EOS to binary format. A tool developed at ORNL is then used to convert the binary format to ASCII. The MRT is available from the Land Processes DAAC. Whereas the MRT can also be used to reproject data from its native projection to other projections, ORNL chose to forgo the resampling associated with reprojection to minimize data manipulation and distortion. The MOD12Q1 Land Cover Collection 3 data are in I-Sin projection, and the Collection 4 and Collection 5 data are in Sinusoidal projection.

22

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Method Used to Calculate Albedo from the MODIS Albedo Model Parameter Product MCD43A1 Method Used to Calculate Albedo from the MODIS Albedo Model Parameter Product MCD43A1 Albedo MCD43A The ALBEDO data are based on the Terra and Aqua(Combined) MODIS BRDF / Albedo Model Parameter Product (MCD43A1). The primary BRDF model parameters from MCD43A1 are used in the following equations to calculate Black-sky, white-sky, and actual (blue-sky) albedo. We have used a solar zenith angle (szn) equal to local solar noon and an optical depth of 0.2 as default values in calculating these data files. Black-sky Albedo = Parameters_01 + Parameters_02 * (-0.007574 + (-0.070987 * szn2) + (0.307588 * szn3)) + Parameters_03 * (-1.284909 + (-0.166314 * szn2) + (0.041840 * szn3)) White-sky Albedo = Parameters_01 + Parameters_02 * (0.189184) + Parameters_03 * (-1.377622)

23

Retrieval of Cirrus Microphysical Properties with a Suite of Algorithms for Airborne and Spaceborne Lidar, Radar, and Radiometer Data  

Science Conference Proceedings (OSTI)

Algorithms are developed to convert data streams from multiple airborne and spaceborne remote sensors into layer-averaged cirrus bulk microphysical properties. Radiometers such as the Moderate-Resolution Imaging Spectroradiometer (MODIS) observe ...

Yuying Zhang; Gerald G. Mace

2006-12-01T23:59:59.000Z

24

SAFARI 2000 MODIS Data Sets Available  

NLE Websites -- All DOE Office Websites (Extended Search)

Resolution Imaging Spectroradiometer (MODIS) for the SAFARI 2000 project. The data set "SAFARI 2000 MODIS MOD04L2 Aerosol Data, GRANT Format, for Southern Africa" contains...

25

MODIS Land Products Subsets Web Service  

NLE Websites -- All DOE Office Websites (Extended Search)

Web Service The MODIS Web service provides users with subsets of MODIS Land Products through standards based SOAP (Simple Object Access Protocol) Web service. Through the Web...

26

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Global Subsetting and Visualization Tool Global Subsetting and Visualization Tool The Global Subsetting and Visualization Tool provides customized subsets of MODIS Land products in ASCII format on demand for any location on Earth. Users select a site (either from a picklist or by entering the site's geographic coordinates) and the area surrounding that site, from one pixel up to 201 x 201 km. The tool is expected to take up to 60 minutes to complete the processing, and the tool will send you an email message containing the URL where you can access the output. The tool provides time series plots of the measurement, an ASCII file of the pixel values for the selected product along with quality information, average and standard deviations for the area selected, and a file that can be imported directly into GIS software. In addition we provide a land cover grid (IGBP classification) of the area, along with an estimate of heterogeneity (Shannon richness and evenness).

27

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

Science Conference Proceedings (OSTI)

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

Christopher Potter; Steven Klooster; Alfredo Huete; Vanessa Genovese

2007-08-01T23:59:59.000Z

28

Cloud Detection with MODIS. Part II: Validation  

Science Conference Proceedings (OSTI)

An assessment of the performance of the Moderate Resolution Imaging Spectroradiometer (MODIS) cloud mask algorithm for Terra and Aqua satellites is presented. The MODIS cloud mask algorithm output is compared with lidar observations from ground [...

S. A. Ackerman; R. E. Holz; R. Frey; E. W. Eloranta; B. C. Maddux; M. McGill

2008-07-01T23:59:59.000Z

29

The Development of an Airborne Infrared Interferometer for Meteorological Sounding Studies  

Science Conference Proceedings (OSTI)

The United Kingdom Meteorological Office (UKMO) has developed an airborne interferometer to act as a simulator for future satellite-based infrared meteorological sounders. The Airborne Research Interferometer Evaluation System (ARIES) consists of ...

S. H. S. Wilson; N. C. Atkinson; J. A. Smith

1999-12-01T23:59:59.000Z

30

Modeling for Airborne Contamination  

SciTech Connect

The objective of Modeling for Airborne Contamination (referred to from now on as ''this report'') is to provide a documented methodology, along with supporting information, for estimating the release, transport, and assessment of dose to workers from airborne radioactive contaminants within the Monitored Geologic Repository (MGR) subsurface during the pre-closure period. Specifically, this report provides engineers and scientists with methodologies for estimating how concentrations of contaminants might be distributed in the air and on the drift surfaces if released from waste packages inside the repository. This report also provides dose conversion factors for inhalation, air submersion, and ground exposure pathways used to derive doses to potentially exposed subsurface workers. The scope of this report is limited to radiological contaminants (particulate, volatile and gaseous) resulting from waste package leaks (if any) and surface contamination and their transport processes. Neutron activation of air, dust in the air and the rock walls of the drift during the preclosure time is not considered within the scope of this report. Any neutrons causing such activation are not themselves considered to be ''contaminants'' released from the waste package. This report: (1) Documents mathematical models and model parameters for evaluating airborne contaminant transport within the MGR subsurface; and (2) Provides tables of dose conversion factors for inhalation, air submersion, and ground exposure pathways for important radionuclides. The dose conversion factors for air submersion and ground exposure pathways are further limited to drift diameters of 7.62 m and 5.5 m, corresponding to the main and emplacement drifts, respectively. If the final repository design significantly deviates from these drift dimensions, the results in this report may require revision. The dose conversion factors are further derived by using concrete of sufficient thickness to simulate the drift walls. The gamma-ray scattering properties of concrete are sufficiently similar to those of the host rock and proposed insert material; use of concrete will have no significant impact on the conclusions. The information in this report is presented primarily for use in performing pre-closure radiological safety evaluations of radiological contaminants, but it may also be used to develop strategies for contaminant leak detection and monitoring in the MGR. Included in this report are the methods for determining the source terms and release fractions, and mathematical models and model parameters for contaminant transport and distribution within the repository. Various particle behavior mechanisms that affect the transport of contaminant are included. These particle behavior mechanisms include diffusion, settling, resuspension, agglomeration and other deposition mechanisms.

F.R. Faillace; Y. Yuan

2000-08-31T23:59:59.000Z

31

Collection 4 MODIS Land Product Subsets will be decommissioned...  

NLE Websites -- All DOE Office Websites (Extended Search)

4 MODIS Land Product Subsets will be decommissioned on January 31, 2009 The ORNL NASA DAAC will discontinue the distribution of Collection 4 MODIS Land Product Subsets on January...

32

AIRS Subpixel Cloud Characterization Using MODIS Cloud Products  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) measurements from the Earth Observing System's (EOS's) Aqua satellite enable improved global monitoring of the distribution of clouds. MODIS is ...

Jun Li; W. Paul Menzel; Fengying Sun; Timothy J. Schmit; James Gurka

2004-08-01T23:59:59.000Z

33

Airborne Tracking Sunphotometer  

Science Conference Proceedings (OSTI)

An airborne tracking sunphotometer, mounted on the outside top surface of an aircraft has been developed to provide unrestricted viewing of the Sun. This instrument will substantially increase the data that scientists can gather for atmospheric ...

Tak Matsumoto; Philip Russell; Cesar Mina; William Van Ark; Victor Banta

1987-06-01T23:59:59.000Z

34

Airborne Internet : market & opportunity  

E-Print Network (OSTI)

The purpose of this thesis to evaluate the opportunity for service provider entry and of the airborne internet, to analyze the disruptive impact technology used by AirCell and AeroSat has had on the development of an ...

Bhadouria, Anand

2007-01-01T23:59:59.000Z

35

The MODIS Aerosol Algorithm, Products, and Validation  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard both NASA’s Terra and Aqua satellites is making near-global daily observations of the earth in a wide spectral range (0.41–15 ?m). These measurements are used to derive spectral ...

L. A. Remer; Y. J. Kaufman; D. Tanré; S. Mattoo; D. A. Chu; J. V. Martins; R.-R. Li; C. Ichoku; R. C. Levy; R. G. Kleidman; T. F. Eck; E. Vermote; B. N. Holben

2005-04-01T23:59:59.000Z

36

Subsetting Tools Available for New MODIS Land Products (Collection 5)  

NLE Websites -- All DOE Office Websites (Extended Search)

Subsetting Tools Available for New MODIS Land Products (Collection 5) Subsetting Tools Available for New MODIS Land Products (Collection 5) The ORNL DAAC announces two tools for subsetting land products from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors onboard the Terra and Aqua satellites. The first tool allows users to obtain MODIS land products for 1,052 selected sites worldwide in ASCII format (7 x 7 km) and in GeoTIFF format (25 x 25 km). To access this tool see http://daac.ornl.gov/modisfixedsite. The global subsetting tool creates MODIS land product subsets for user-selected areas worldwide from one pixel up to 201 x 201 km area and for a user-selected time period during the MODIS record. To access this tool, please see http://daac.ornl.gov/modisglobal. Both tools subset the following MODIS Land Products:

37

Airborne Inspection Technology: Market Survey  

Science Conference Proceedings (OSTI)

This report presents findings of an investigation into various airborne inspection technologies currently used within the electric utility industry.

2002-03-04T23:59:59.000Z

38

A SOAP Web Service for accessing MODIS land product subsets  

Science Conference Proceedings (OSTI)

Remote sensing data from satellites have provided valuable information on the state of the earth for several decades. Since March 2000, the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on board NASA s Terra and Aqua satellites have been providing estimates of several land parameters useful in understanding earth system processes at global, continental, and regional scales. However, the HDF-EOS file format, specialized software needed to process the HDF-EOS files, data volume, and the high spatial and temporal resolution of MODIS data make it difficult for users wanting to extract small but valuable amounts of information from the MODIS record. To overcome this usability issue, the NASA-funded Distributed Active Archive Center (DAAC) for Biogeochemical Dynamics at Oak Ridge National Laboratory (ORNL) developed a Web service that provides subsets of MODIS land products using Simple Object Access Protocol (SOAP). The ORNL DAAC MODIS subsetting Web service is a unique way of serving satellite data that exploits a fairly established and popular Internet protocol to allow users access to massive amounts of remote sensing data. The Web service provides MODIS land product subsets up to 201 x 201 km in a non-proprietary comma delimited text file format. Users can programmatically query the Web service to extract MODIS land parameters for real time data integration into models, decision support tools or connect to workflow software. Information regarding the MODIS SOAP subsetting Web service is available on the World Wide Web (WWW) at http://daac.ornl.gov/modiswebservice.

SanthanaVannan, Suresh K [ORNL; Cook, Robert B [ORNL; Pan, Jerry Yun [ORNL; Wilson, Bruce E [ORNL

2011-01-01T23:59:59.000Z

39

Airborne wireless communication systems, airborne communication methods, and communication methods  

SciTech Connect

An airborne wireless communication system includes circuitry configured to access information describing a configuration of a terrestrial wireless communication base station that has become disabled. The terrestrial base station is configured to implement wireless communication between wireless devices located within a geographical area and a network when the terrestrial base station is not disabled. The circuitry is further configured, based on the information, to configure the airborne station to have the configuration of the terrestrial base station. An airborne communication method includes answering a 911 call from a terrestrial cellular wireless phone using an airborne wireless communication system.

Deaton, Juan D. (Menan, ID); Schmitt, Michael J. (Idaho Falls, ID); Jones, Warren F. (Idaho Falls, ID)

2011-12-13T23:59:59.000Z

40

Definition: Airborne Gravity Survey | Open Energy Information  

Open Energy Info (EERE)

Survey Jump to: navigation, search Dictionary.png Airborne Gravity Survey Airborne gravity gradiometry (AGG) surveys provide information regarding the mass distribution of the...

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


41

Comparing MODIS and AIRS Infrared-Based Cloud Retrievals  

Science Conference Proceedings (OSTI)

Comparisons are described for infrared-derived cloud products retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) using measured spatial response functions obtained from prelaunch ...

Shaima L. Nasiri; H. Van T. Dang; Brian H. Kahn; Eric J. Fetzer; Evan M. Manning; Mathias M. Schreier; Richard A. Frey

2011-05-01T23:59:59.000Z

42

Retrieval of Cloud Microphysical Properties from MODIS and AIRS  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) measurements from the NASA Earth Observing System Aqua satellite enable global monitoring of the distribution of clouds during day and night. ...

Jun Li; Hung-Lung Huang; Chian-Yi Liu; Ping Yang; Timothy J. Schmit; Heli Wei; Elisabeth Weisz; Li Guan; W. Paul Menzel

2005-10-01T23:59:59.000Z

43

Radiance Comparisons of MODIS and AIRS Using Spatial Response Information  

Science Conference Proceedings (OSTI)

The combination of multiple satellite instruments on a pixel-by-pixel basis is a difficult task, even for instruments collocated in space and time, such as the Moderate Resolution Imaging Spectroradiometer (MODIS) and Atmospheric Infrared Sounder ...

M. M. Schreier; B. H. Kahn; A. Eldering; D. A. Elliott; E. Fishbein; F. W. Irion; T. S. Pagano

2010-08-01T23:59:59.000Z

44

Next-Generation MODIS for Polar Operational Environmental Satellites  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) protoflight model has been delivered to the NASA Earth Observing System AM-1 platform project to provide highly calibrated, near daily, global atmosphere, land, and ocean observation in 36 ...

Carl F. Schueler; William L. Barnes

1998-04-01T23:59:59.000Z

45

MODIS Cloud-Top Property Refinements for Collection 6  

Science Conference Proceedings (OSTI)

This paper summarizes the Collection-6 refinements in the Moderate Resolution Imaging Spectroradiometer (MODIS) operational cloud-top properties algorithm. The focus is on calibration improvements and on cloud macrophysical properties including ...

Bryan A. Baum; W. Paul Menzel; Richard A. Frey; David C. Tobin; Robert E. Holz; Steve A. Ackerman; Andrew K. Heidinger; Ping Yang

2012-06-01T23:59:59.000Z

46

Airborne Dual-Doppler Observations of an Intense Frontal System Approaching the Pacific Northwest Coast  

Science Conference Proceedings (OSTI)

Airborne Doppler radar data, collected off the Pacific Northwest coast by a NOAA WP-3D Orion aircraft over an 8-h period on 8 December 1993 during the Coastal Observations and Simulations with Topography experiment, reveal the mesoscale structure ...

Scott A. Braun; Robert A. Houze Jr.; Bradley F. Smull

1997-12-01T23:59:59.000Z

47

Airborne Wind Turbine  

Science Conference Proceedings (OSTI)

Broad Funding Opportunity Announcement Project: Makani Power is developing an Airborne Wind Turbine (AWT) that eliminates 90% of the mass of a conventional wind turbine and accesses a stronger, more consistent wind at altitudes of near 1,000 feet. At these altitudes, 85% of the country can offer viable wind resources compared to only 15% accessible with current technology. Additionally, the Makani Power wing can be economically deployed in deep offshore waters, opening up a resource which is 4 times greater than the entire U.S. electrical generation capacity. Makani Power has demonstrated the core technology, including autonomous launch, land, and power generation with an 8 meter wingspan, 20 kW prototype. At commercial scale, Makani Power aims to develop a 600 kW, 28 meter wingspan product capable of delivering energy at an unsubsidized cost competitive with coal, the current benchmark for low-cost power.

None

2010-09-01T23:59:59.000Z

48

Synergistic Use of MODIS and AIRS in a Variational Retrieval of Cloud Parameters  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) measurements from the Earth Observing System's (EOS's) Aqua satellite enable global monitoring of the distribution of clouds. MODIS is able to ...

Jun Li; W. Paul Menzel; Wenjian Zhang; Fengying Sun; Timothy J. Schmit; James J. Gurka; Elisabeth Weisz

2004-11-01T23:59:59.000Z

49

Using MODIS to Estimate Cloud Contamination of the AVHRR Data Record  

Science Conference Proceedings (OSTI)

A study of the improvement in cloud-masking capability of data from a Moderate Resolution Imaging Spectroradiometer (MODIS) relative to data from an Advanced Very High Resolution Radiometer (AVHRR) is performed. MODIS offers significant advances ...

Andrew K. Heidinger; Venkata Rao Anne; Charles Dean

2002-05-01T23:59:59.000Z

50

High-Spatial-Resolution Surface and Cloud-Type Classification from MODIS Multispectral Band Measurements  

Science Conference Proceedings (OSTI)

A method for automated classification of surface and cloud types using Moderate Resolution Imaging Spectroradiometer (MODIS) radiance measurements has been developed. The MODIS cloud mask is used to define the training sets. Surface and cloud-...

Jun Li; W. Paul Menzel; Zhongdong Yang; Richard A. Frey; Steven A. Ackerman

2003-02-01T23:59:59.000Z

51

Direct Insertion of MODIS Radiances in a Global Aerosol Transport Model  

Science Conference Proceedings (OSTI)

In this paper results are presented from a simple offline assimilation system that uses radiances from the Moderate Resolution Imaging Spectroradiometer (MODIS) channels that sense atmospheric aerosols over land and ocean. The MODIS information ...

Clark Weaver; Arlindo da Silva; Mian Chin; Paul Ginoux; Oleg Dubovik; Dave Flittner; Aahmad Zia; Lorraine Remer; Brent Holben; Watson Gregg

2007-03-01T23:59:59.000Z

52

Airborne Doppler Radar Data Analysis Workshop  

Science Conference Proceedings (OSTI)

The Airborne Doppler Radar Data Analysis Workshop, sponsored by the Atmospheric Technology Division (ATD) of the National Center for Atmospheric Research (NCAR), was the first to focus on analyzing airborne Doppler radar data. The workshop (held ...

Wen-Chau Lee; Frank D. Marks; Craig Walther

2003-08-01T23:59:59.000Z

53

Airborne electromagnetic surveys as a reconnaissance technique...  

Open Energy Info (EERE)

electromagnetic surveys as a reconnaissance technique for geothermal exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Airborne...

54

Airborne remote sensing in the frozen north  

E-Print Network (OSTI)

20 Airborne remote sensing in the frozen north High level shot from 10,000 feet shows, Chief Pilot and Operations Manager for NERC's Airborne Remote Sensing Facility reports on a recent trip expert ­ the Airborne Remote Sensing Facility flew to the Norwegian archipelago of Svalbard on August 3

Brierley, Andrew

55

AIRBORNE, OPTICAL REMOTE SENSNG OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION  

SciTech Connect

Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. The scope of the work involved designing and developing an airborne, optical remote sensor capable of sensing methane and, if possible, ethane for the detection of natural gas pipeline leaks. Flight testing using a custom dual wavelength, high power fiber amplifier was initiated in February 2005. Ophir successfully demonstrated the airborne system, showing that it was capable of discerning small amounts of methane from a simulated pipeline leak. Leak rates as low as 150 standard cubic feet per hour (scf/h) were detected by the airborne sensor.

Jerry Myers

2005-04-15T23:59:59.000Z

56

Exploration of the MODIS Cloud-Top Property Products for the Investigation of Equatorial Wave Systems  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) observations provide an unprecedented opportunity for studying cloud macrophysical (cloud-top pressure, temperature, height, and phase), microphysical (effective particle size), and ...

Yue Li; Gerald R. North; Ping Yang; Bryan A. Baum

2010-09-01T23:59:59.000Z

57

Airborne observations of methane emissions from rice cultivation...  

NLE Websites -- All DOE Office Websites (Extended Search)

Airborne observations of methane emissions from rice cultivation in the Sacramento Valley of California Title Airborne observations of methane emissions from rice cultivation in...

58

Particle Growth and Drop Collection Efficiency of Warm Clouds as Inferred from Joint CloudSat and MODIS Observations  

Science Conference Proceedings (OSTI)

This study describes an approach for combining CloudSat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations to investigate the microphysical processes of warm clouds on the global scale. MODIS column optical thickness ...

Kentaroh Suzuki; Takashi Y. Nakajima; Graeme L. Stephens

2010-09-01T23:59:59.000Z

59

Global Percent Tree Cover at a Spatial Resolution of 500 Meters: First Results of the MODIS Vegetation Continuous Fields Algorithm  

Science Conference Proceedings (OSTI)

The first results of the Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation continuous field algorithm's global percent tree cover are presented. Percent tree cover per 500-m MODIS pixel is estimated using a supervised regression ...

M. C. Hansen; R. S. DeFries; J. R. G. Townshend; M. Carroll; C. Dimiceli; R. A. Sohlberg

2003-10-01T23:59:59.000Z

60

Estimation of Net Ecosystem Carbon Exchange for the Conterminous UnitedStates by Combining MODIS and AmeriFlux Data  

Science Conference Proceedings (OSTI)

Eddy covariance flux towers provide continuous measurements of net ecosystem carbon exchange (NEE) for a wide range of climate and biome types. However, these measurements only represent the carbon fluxes at the scale of the tower footprint. To quantify the net exchange of carbon dioxide between the terrestrial biosphere and the atmosphere for regions or continents, flux tower measurements need to be extrapolated to these large areas. Here we used remotely-sensed data from the Moderate Resolution Imaging Spectrometer (MODIS) instrument on board NASA's Terra satellite to scale up AmeriFlux NEE measurements to the continental scale. We first combined MODIS and AmeriFlux data for representative U.S. ecosystems to develop a predictive NEE model using a regression tree approach. The predictive model was trained and validated using NEE data over the periods 2000-2004 and 2005-2006, respectively. We found that the model predicted NEE reasonably well at the site level. We then applied the model to the continental scale and estimated NEE for each 1 km x 1 km cell across the conterminous U.S. for each 8-day period in 2005 using spatially-explicit MODIS data. The model generally captured the expected spatial and seasonal patterns of NEE. Our study demonstrated that our empirical approach is effective for scaling up eddy flux NEE measurements to the continental scale and producing wall-to-wall NEE estimates across multiple biomes. Our estimates may provide an independent dataset from simulations with biogeochemical models and inverse modeling approaches for examining the spatiotemporal patterns of NEE and constraining terrestrial carbon budgets for large areas.

Xiao, Jingfeng; Zhuang, Qianlai; Baldocchi, Dennis D.; Law, Beverly E.; Richardson, Andrew D.; Chen, Jiquan; Oren, Ram; Starr, Gregory; Noormets, Asko; Ma, Siyan; Verma, Shashi B.; Wharton, Sonia; Wofsy, Steven C.; Bolstad, Paul V.; Burns, Sean P.; Cook, David R.; Curtis, Peter S.; Drake, Bert G.; Falk, Matthias; Fischer, Marc L.; Foster, David R.; Gu, Lianhong; Hadley, Julian L.; Hollinger, David Y.; Katul, Gabriel G.; Litvak, Marcy; Martin, Timothy A.; Matamala, Roser; McNulty, Steve; Meyers, Tilden P.; Monson, Russell K.; Munger, J. William; Oechel, Walter C.; U, Kyaw Tha Paw; Schmid, Hans Peter; Scott, Russell L.; Sun, Ge; Suyker, Andrew E.; Torn, Margaret S.

2009-03-06T23:59:59.000Z

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


61

Estimation of net ecosystem carbon exchange for the conterminous United States by combining MODIS and AmeriFlux data  

Science Conference Proceedings (OSTI)

Eddy covariance flux towers provide continuous measurements of net ecosystem carbon exchange (NEE) for a wide range of climate and biome types. However, these measurements only represent the carbon fluxes at the scale of the tower footprint. To quantify the net exchange of carbon dioxide between the terrestrial biosphere and the atmosphere for regions or continents, flux tower measurements need to be extrapolated to these large areas. Here we used remotely sensed data from the Moderate Resolution Imaging Spectrometer (MODIS) instrument on board the National Aeronautics and Space Administration's (NASA) Terra satellite to scale up AmeriFlux NEE measurements to the continental scale. We first combined MODIS and AmeriFlux data for representative U.S. ecosystems to develop a predictive NEE model using a modified regression tree approach. The predictive model was trained and validated using eddy flux NEE data over the periods 2000-2004 and 2005-2006, respectively. We found that the model predicted NEE well (r = 0.73, p < 0.001). We then applied the model to the continental scale and estimated NEE for each 1 km x 1 km cell across the conterminous U.S. for each 8-day interval in 2005 using spatially explicit MODIS data. The model generally captured the expected spatial and seasonal patterns of NEE as determined from measurements and the literature. Our study demonstrated that our empirical approach is effective for scaling up eddy flux NEE measurements to the continental scale and producing wall-to-wall NEE estimates across multiple biomes. Our estimates may provide an independent dataset from simulations with biogeochemical models and inverse modeling approaches for examining the spatiotemporal patterns of NEE and constraining terrestrial carbon budgets over large areas.

Xiao, Jingfeng; Zhuang, Qianlai; Baldocchi, Dennis D.; Bolstad, Paul V.; Burns, Sean P.; Chen, Jiquan; Cook, David R.; Curtis, Peter S.; Drake, Bert G.; Foster, David R.; Gu, Lianhong; Hadley, Julian L.; Hollinger, David Y.; Katul, Gabriel G.; Law, Beverly E.; Litvak, Marcy; Ma, Siyan; Martin, Timothy A.; Matamala, Roser; McNulty, Steve; Meyers, Tilden P.; Monson, Russell K.; Munger, J. William; Noormets, Asko; Oechel, Walter C.; Oren, Ram; Richardson, Andrew D.; Schmid, Hans Peter; Scott, Russell L.; Starr, Gregory; Sun, Ge; Suyker, Andrew E.; Torn, Margaret S.; Paw, Kyaw; Verma, Shashi B.; Wharton, Sonia; Wofsy, Steven C.

2008-10-01T23:59:59.000Z

62

Chemistry of airborne particles from metallurgical processing  

E-Print Network (OSTI)

Airborne particles fall into one of three size ranges. The nucleation range consists of nanoparticles created from vapor atom collisions. The decisive parameter for particle size and composition is the supercooling of the ...

Jenkins, Neil Travis, 1973-

2003-01-01T23:59:59.000Z

63

An Airborne APT Weather Satellite Imaging System  

Science Conference Proceedings (OSTI)

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

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

1998-02-01T23:59:59.000Z

64

Principles for Sampling Airborne Radioactivity from Stacks  

SciTech Connect

This book chapter describes the special processes involved in sampling the airborne effluents from nuclear faciities. The title of the book is Radioactive Air Sampling Methods. The abstract for this chapter was cleared as PNNL-SA-45941.

Glissmeyer, John A.

2010-10-18T23:59:59.000Z

65

Mapping of Airborne Doppler Radar Data  

Science Conference Proceedings (OSTI)

Two sets of equations are derived to 1) map airborne Doppler radar data from an aircraft-relative coordinate system to an earth-relative coordinate system, and 2) remove the platform motion from the observed Doppler velocities. These equations ...

Wen-Chau Lee; Peter Dodge; Frank D. Marks Jr.; Peter H. Hildebrand

1994-04-01T23:59:59.000Z

66

Performance of Some Airborne Thermometers in Clouds  

Science Conference Proceedings (OSTI)

The ability of airborne instruments to measure temperature in cloud is studied using theoretical analyses and experimental data. Theoretical predictions of the effects of sensor wetting are reviewed and modified, and are then compared to ...

R. Paul Lawson; William A. Cooper

1990-06-01T23:59:59.000Z

67

Waterspout Velocity Measurements by Airborne Doppler Lidar  

Science Conference Proceedings (OSTI)

A Doppler lidar measures the line-of-sight velocity of cloud droplets in a waterspout much as a meteorological Doppler radar measures the velocity of larger hydrometeors. We discuss details of the application of an airborne Doppler lidar to ...

R. L. Schwiesow; R. E. Cupp; P. C. Sinclair; R. F. Abbey Jr.

1981-04-01T23:59:59.000Z

68

Targeted Observations with an Airborne Wind Lidar  

Science Conference Proceedings (OSTI)

This study investigates the possibilities and limitations of airborne Doppler lidar for adaptive observations over the Atlantic Ocean. For the first time, a scanning 2-?m Doppler lidar was applied for targeted measurements during the Atlantic “...

M. Weissmann; R. Busen; A. Dörnbrack; S. Rahm; O. Reitebuch

2005-11-01T23:59:59.000Z

69

ABLE: Development of an Airborne Lidar  

Science Conference Proceedings (OSTI)

The acronym ABLE (Airborne Lidar Experiment) identifies a project to develop and fly an optical radar on a stratospheric platform for studies related to atmospheric radiation and composition. The prototype, ABLE 1, has been successfully flown on ...

Giorgio Fiocco; Paolo G. Calisse; Marco Cacciani; Stefano Casadio; Giandomenico Pace; Daniele Fua

1999-10-01T23:59:59.000Z

70

Reconciling Simulated and Observed Views of Clouds: MODIS, ISCCP, and the Limits of Instrument Simulators  

Science Conference Proceedings (OSTI)

The properties of clouds that may be observed by satellite instruments, such as optical thickness and cloud-top pressure, are only loosely related to the way clouds are represented in models of the atmosphere. One way to bridge this gap is through ...

Robert Pincus; Steven Platnick; Steven A. Ackerman; Richard S. Hemler; Robert J. Patrick Hofmann

2012-07-01T23:59:59.000Z

71

simulations  

E-Print Network (OSTI)

Part 1 of this two-part paper describes the analysis and 2D finite element (FE) simulations for a capacitive incremental position sensor for nanopositioning of microactuator systems with a displacement range of 100 µm or more. Two related concepts for a capacitive incremental position sensor are presented. In an incremental capacitance measurement mode (ICMM), the periodic change in capacitance is measured to determine the relative displacement between two periodic geometries S1 and S2 with a gap distance of ?1 µm. In a constant capacitance measurement mode (CCMM), the distance between S1 and S2 is controlled to keep the capacitance between S1 and S2 constant. Analysis and 2D finite element simulations show that the signal-to-noise ratio for CCMM can be>300 × over ICMM and with less nonlinearity of the position sensor signal. This means that CCMM will perform better in accurate quadrature incremental position detection. A comparison with measurements shows that the 2D finite element simulation method is a useful tool that realistically predicts the capacitance versus displacement for different combinations of periodic geometries. (Some figures in this article are in colour only in the electronic version) 1.

A A Kuijpers; G J M Krijnen; R J Wiegerink; T S J Lammerink; M Elwenspoek

2006-01-01T23:59:59.000Z

72

Evaluation of a MODIS-Based Potential Evapotranspiration Product at the Point Scale  

Science Conference Proceedings (OSTI)

This paper outlines the development of a continuous, daily time series of potential evapotranspiration (PET) using Moderate Resolution Imaging Spectroradiometer (MODIS) sensor data from the Terra satellite platform. The approach is based on the ...

Jongyoun Kim; Terri S. Hogue

2008-06-01T23:59:59.000Z

73

MODIS Observations of Ship Tracks in Summertime Stratus off the West Coast of the United States  

Science Conference Proceedings (OSTI)

Three years of 1-km Moderate Resolution Imaging Spectroradiometer (MODIS) observations for morning (Terra) and afternoon (Aqua) summertime marine stratus off the west coast of the United States were analyzed to determine the response of the ...

Matthew S. Segrin; James A. Coakley Jr.; William R. Tahnk

2007-12-01T23:59:59.000Z

74

Comparing Ship-Track Droplet Sizes Inferred from Terra and Aqua MODIS Data  

Science Conference Proceedings (OSTI)

In this study of ship tracks, Moderate Resolution Imaging Spectroradiometer (MODIS) measurements from late-morning (Terra) and early-afternoon (Aqua) Earth Observing System platforms are analyzed in five separate geographically distributed cases ...

Burcu Kabatas; W. Paul Menzel; Ata Bilgili; Liam E. Gumley

2013-01-01T23:59:59.000Z

75

Satellite-Based Imagery Techniques for Daytime Cloud/Snow Delineation from MODIS  

Science Conference Proceedings (OSTI)

This paper presents two multispectral enhancement techniques for distinguishing between regions of cloud and snow cover using optical spectrum passive radiometer satellite observations from the Moderate Resolution Imaging Spectroradiometer (MODIS)...

Steven D. Miller; Thomas F. Lee; Robert L. Fennimore

2005-07-01T23:59:59.000Z

76

Assimilating MODIS and AMSR-E Snow Observations in a Snow Evolution Model  

Science Conference Proceedings (OSTI)

In this paper four simple computationally inexpensive, direct insertion data assimilation schemes are presented, and evaluated, to assimilate Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover, which is a binary observation, and ...

Steven J. Fletcher; Glen E. Liston; Christopher A. Hiemstra; Steven D. Miller

2012-10-01T23:59:59.000Z

77

Multilayer Cloud Detection with the MODIS Near-Infrared Water Vapor Absorption Band  

Science Conference Proceedings (OSTI)

Data Collection 5 processing for the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the NASA Earth Observing System (EOS) Terra and Aqua spacecraft includes an algorithm for detecting multilayered clouds in daytime. The main ...

Galina Wind; Steven Platnick; Michael D. King; Paul A. Hubanks; Michael J. Pavolonis; Andrew K. Heidinger; Ping Yang; Bryan A. Baum

2010-11-01T23:59:59.000Z

78

The Relationship of the Terra MODIS Fire Product and Anthropogenic Features in the Central Siberian Landscape  

Science Conference Proceedings (OSTI)

Fires are a common occurrence in the Siberian boreal forest. The thermal anomalies product of the Terra/Moderate Resolution Imaging Spectroradiometer (MODIS) product suite is designed to detect thermal anomalies (i.e., hotspots or fires) on the ...

Katalin Kovacs; K. Jon Ranson; Guoqing Sun; Vlacheslav I. Kharuk

2004-12-01T23:59:59.000Z

79

Relating Satellite-Observed Cloud Properties from MODIS to Meteorological Conditions for Marine Boundary Layer Clouds  

Science Conference Proceedings (OSTI)

This study examines 6 yr of cloud properties observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the NASA Terra satellite in five prominent marine boundary layer (MBL) cloud regions (California, Peru, Canary, Angola, ...

Guang J. Zhang; Andrew M. Vogelmann; Michael P. Jensen; William D. Collins; Edward P. Luke

2010-03-01T23:59:59.000Z

80

Application of CALIOP Measurements to the Evaluation of Cloud Phase Derived from MODIS Infrared Channels  

Science Conference Proceedings (OSTI)

In this study, Moderate Resolution Imaging Spectroradiometer (MODIS) infrared-based cloud thermodynamic phase retrievals are evaluated using Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) retrievals for the 6 months from January to ...

Hyoun-Myoung Cho; Shaima L. Nasiri; Ping Yang

2009-10-01T23:59:59.000Z

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


81

Updating a Land Surface Model with MODIS-Derived Snow Cover  

Science Conference Proceedings (OSTI)

A simple scheme for updating snow-water storage in a land surface model using snow cover observations is presented. The scheme makes use of snow cover observations retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard ...

M. Rodell; P. R. Houser

2004-12-01T23:59:59.000Z

82

Impact of the Aqua MODIS band 6 Restoration on Cloud/Snow Discrimination  

Science Conference Proceedings (OSTI)

Distinguishing between clouds and snow is an intrinsically challenging problem because both have similar high albedo across many bands. The 1.6?m channel (band 6) on the MODIS instrument provides an essential tool for distinguishing clouds from ...

Irina Gladkova; Fazlul Shahriar; Michael Grossberg; Richard A. Frey; W. Paul Menzel

83

Arctic Cloud Characteristics as Derived from MODIS, CALIPSO, and CloudSat  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS), Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP), and CloudSat Cloud Profiling Radar (CPR) set of sensors, all in the Afternoon Constellation (A-Train), has been regarded as among ...

Mark Aaron Chan; Josefino C. Comiso

2013-05-01T23:59:59.000Z

84

Airborne Electromagnetic Survey | Open Energy Information  

Open Energy Info (EERE)

Airborne Electromagnetic Survey Airborne Electromagnetic Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Airborne Electromagnetic Survey Details Activities (2) Areas (2) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: provide data on rock type and mineral content Stratigraphic/Structural: Hydrological: can be used to detect changes in density of fluids and indicate if there is salt water intrusion Thermal: Cost Information Low-End Estimate (USD): 48.274,827 centUSD 0.0483 kUSD 4.827e-5 MUSD 4.827e-8 TUSD / mile Median Estimate (USD): 317.3831,738 centUSD 0.317 kUSD

85

New Sampling Methods for Airborne Microorganisms  

NLE Websites -- All DOE Office Websites (Extended Search)

New Sampling Methods for Airborne Microorganisms New Sampling Methods for Airborne Microorganisms Speaker(s): Klaus Willeke Date: February 27, 2001 - 12:00pm Location: Bldg 90 Seminar Host/Point of Contact: David Faulkner Klaus Willeke and his international team of engineers, physicists, microbiologists, industrial hygienists and environmental scientists have worked for about 15 years on the development of new methods for sampling airborne microorganisms. The following topics will be highlighted: long-term bioaerosol sampling into liquid by swirling air motion ("Biosampler"); personal aerosol sampling with low wind sensitivity and highfilter deposit uniformity ("Button Aerosol Sampler"); collection of microorganisms by electrostatic means; source testing as a predictor for microorganism release from surfaces; particle concentrating from large air

86

Airborne Gravity Survey | Open Energy Information  

Open Energy Info (EERE)

Airborne Gravity Survey Airborne Gravity Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Airborne Gravity Survey Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Gravity Techniques Parent Exploration Technique: Gravity Techniques Information Provided by Technique Lithology: Distribution of density in the subsurface enables inference of rock type. Stratigraphic/Structural: Delineation of steeply dipping formations, geological discontinuities and faults, intrusions and the deposition of silicates due to hydrothermal activity. Hydrological: Density of sedimentary rocks are strongly influenced by fluid contained within pore space. Dry bulk density refers to the rock with no moisture, while the wet bulk density accounts for water saturation; fluid content may alter density by up to 30%.(Sharma, 1997)

87

Introductory Remarks: ARM AVP Workshop on Advances in Airborne...  

NLE Websites -- All DOE Office Websites (Extended Search)

Advances in Airborne Instrumentation Warren Wiscombe ARM Chief Scientist Brookhaven National Lab ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement...

88

Intercomparison of Water Vapor Data Measured with Lidar during IHOP_2002. Part II: Airborne-to-Airborne Systems  

Science Conference Proceedings (OSTI)

The dataset of the International H2O Project (IHOP_2002) gives the first opportunity for direct intercomparisons of airborne water vapor lidar systems and allows very important conclusions to be drawn for future field campaigns. Three airborne ...

Andreas Behrendt; Volker Wulfmeyer; Thorsten Schaberl; Hans-Stefan Bauer; Christoph Kiemle; Gerhard Ehret; Cyrille Flamant; Susan Kooi; Syed Ismail; Richard Ferrare; Edward V. Browell; David N. Whiteman

2007-01-01T23:59:59.000Z

89

ARMAR: An Airborne Rain-Mapping Radar  

Science Conference Proceedings (OSTI)

A new airborne rain-mapping radar (ARMAR) has been developed by NASA and the Jet Propulsion Laboratory for operation on the NASA Ames DC-8 aircraft. The radar operates at 13.8 GHz, the frequency to be used by the radar on the Tropical Rainfall ...

S. L. Durden; E. Im; F. K. Li; W. Ricketts; A. Tanner; W. Wilson

1994-06-01T23:59:59.000Z

90

Analyzing Options for Airborne Emergency Wireless Communications  

SciTech Connect

In the event of large-scale natural or manmade catastrophic events, access to reliable and enduring commercial communication systems is critical. Hurricane Katrina provided a recent example of the need to ensure communications during a national emergency. To ensure that communication demands are met during these critical times, Idaho National Laboratory (INL) under the guidance of United States Strategic Command has studied infrastructure issues, concerns, and vulnerabilities associated with an airborne wireless communications capability. Such a capability could provide emergency wireless communications until public/commercial nodes can be systematically restored. This report focuses on the airborne cellular restoration concept; analyzing basic infrastructure requirements; identifying related infrastructure issues, concerns, and vulnerabilities and offers recommended solutions.

Michael Schmitt; Juan Deaton; Curt Papke; Shane Cherry

2008-03-01T23:59:59.000Z

91

GROA AIRBORNE RELEASE DISPERSION FACTOR CALCULATION  

Science Conference Proceedings (OSTI)

The purpose of this document is to calculate airborne release dispersion factors ({chi}/Q) for the surface and subsurface facilities at the Geological Repository Operations Area (GROA). The calculated {chi}/Q values may be used to estimate radiological consequences to workers for potential releases from normal operations and event sequences for License Application. The scope of this document is to provide estimates of {chi}/Q values at potential onsite receptors from facility releases, under normal operating conditions and event sequences.

J. Wang

2005-03-21T23:59:59.000Z

92

Airborne Tactical Free-Electron Laser  

Science Conference Proceedings (OSTI)

The goal of 100 kilowatts (kW) of directed energy from an airborne tactical platform has proved challenging due to the size and weight of most of the options that have been considered. However, recent advances in Free-Electron Lasers appear to offer a solution along with significant tactical advantages: a nearly unlimited magazine, time structures for periods from milliseconds to hours, radar like functionality, and the choice of the wavelength of light that best meets mission requirements. For an Airborne Tactical Free-Electron Laser (ATFEL) on a platforms such as a Lockheed C-130J-30 and airships, the two most challenging requirements, weight and size, can be met by generating the light at a higher harmonic, aggressively managing magnet weights, managing cryogenic heat loads using recent SRF R&D results, and using FEL super compact design concepts that greatly reduce the number of components. The initial R&D roadmap for achieving an ATFEL is provided in this paper. Performing this R&D is expected to further reduce the weight, size and power requirements for the FELs the Navy is currently developing for shipboard applications, as well as providing performance enhancements for the strategic airborne MW class FELs. The 100 kW ATFEL with its tactical advantages may prove sufficiently attractive for early advancement in the queue of deployed FELs.

Roy Whitney; George Neil

2007-02-01T23:59:59.000Z

93

Source Apportionment of Airborne Particulate Matter using Inorganic...  

NLE Websites -- All DOE Office Websites (Extended Search)

organic aerosol (SOA), airborne soil, other SOA, diesel emissions, secondary sulfate, wood combustion, gasoline vehicle, and secondary nitrate contributing 6.9%, 12.8%, 3.7%,...

94

The Effect of Airborne Contaminants on Fuel Cell Performance...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Institute www.hnei.hawaii.edu The Effect of Airborne Contaminants on Fuel Cell Performance & Durability Richard Rocheleau Trent Molter William Collins Silvia Wessel Hawaii...

95

Estimating forest biomass in the USA using generalized allometric models and MODIS land products  

E-Print Network (OSTI)

Estimating forest biomass in the USA using generalized allometric models and MODIS land products 2006; published 11 May 2006. [1] Spatially-distributed forest biomass components are essential to understand carbon cycle and the impact of biomass burning emissions on air quality. We estimated the density

Kuligowski, Bob

96

MODIS Calibration: A Brief Review of the Strategy for the At-Launch Calibration Approach  

Science Conference Proceedings (OSTI)

The Moderate-Resolution Imaging Spectroradiometer (MODIS) is a key instrument on the NASA Earth Observing System. It is a multispectral sensor that will be used to track long-term global change in the land, atmosphere, and ocean components of the ...

B. Guenther; W. Barnes; E. Knight; J. Barker; J. Harnden; R. Weber; M. Roberto; G. Godden; H. Montgomery; P. Abel

1996-04-01T23:59:59.000Z

97

Techniques for Using MODIS Data to Remotely Sense Lake Water Surface Temperatures  

Science Conference Proceedings (OSTI)

This study describes a step-wise methodology used to provide daily, high spatial-resolution water surface temperatures from MODIS satellite data for use in a near-real-time system for the Great Salt Lake (GSL). Land surface temperature (LST) is ...

Joseph A. Grim; Jason C. Knievel; Erik T. Crosman

98

Analysis and Processing of Airborne LIDAR Data  

E-Print Network (OSTI)

Airborne LIDAR systems have been in use for many years to measure points on the earth's surface. They can rapidly produce accurate digital surface models and offer significantly lower costs in field operations and post-processing compared to traditional survey methods. This makes the LIDAR technology an attractive alternative for a variety of mapping applications. From scattered 3-D point clouds to useful representations for end-users requires further research and development of post-processing algorithms. Up to now, the post-processing of LIDAR data is still in an early phase of development because no single technique currently is considered optimum or satisfactory for all conditions and requirements.

Yong Hu

2001-01-01T23:59:59.000Z

99

ANNOUNCEMENT OF OPPORTUNITY AIRBORNE RESEARCH & SURVEY FACILITY (ARSF)  

E-Print Network (OSTI)

channel 8-12 microns, 320 spatial pixels. Large-format RC-10 aerial survey camera with images beingANNOUNCEMENT OF OPPORTUNITY AIRBORNE RESEARCH & SURVEY FACILITY (ARSF) http://arsf.nerc.ac.uk 2010 OCTOBER 2009 The Airborne Research & Survey Facility (ARSF) invites direct access applications for UK

100

Architecture and Algorithms for an Airborne Network  

E-Print Network (OSTI)

The U.S. Air Force currently is in the process of developing an Airborne Network (AN) to provide support to its combat aircrafts on a mission. The reliability needed for continuous operation of an AN is difficult to achieve through completely infrastructure-less mobile ad hoc networks. In this paper we first propose an architecture for an AN where airborne networking platforms (ANPs - aircrafts, UAVs and satellites) form the backbone of the AN. In this architecture, the ANPs can be viewed as mobile base stations and the combat aircrafts on a mission as mobile clients. The combat aircrafts on a mission move through a space called air corridor. The goal of the AN design is to form a backbone network with the ANPs with two properties: (i) the backbone network remains connected at all times, even though the topology of the network changes with the movement of the ANPs, and (ii) the entire 3D space of the air corridor is under radio coverage at all times by the continuously moving ANPs. In addition to proposing an...

Sen, Arunabha; Silva, Tiffany; Das, Nibedita; Kundu, Anjan

2010-01-01T23:59:59.000Z

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


101

Influence of MODIS-derived dynamic vegetation on VIC-simulated soil moisture in Oklahoma  

Science Conference Proceedings (OSTI)

Soil moisture-vegetation interactions are an important component of land-atmosphere coupling, especially in semi-arid regions such as the North American Great Plains. However, many land surface models parameterize vegetation using an interannually-...

Trent W. Ford; Steven M. Quiring

102

Principal Component Image Analysis of MODIS for Volcanic Ash. Part I: Most Important Bands and Implications for Future GOES Imagers  

Science Conference Proceedings (OSTI)

In Part I of this paper, the infrared bands of the Moderate Resolution Imaging Spectroradiometer (MODIS) are analyzed for volcanic ash signals using principal component image analysis. Target volcanoes included Popocatepetl volcano near Mexico ...

Donald W. Hillger; James D. Clark

2002-10-01T23:59:59.000Z

103

Diagnosis of the Warm Rain Process in Cloud-Resolving Models Using Joint CloudSat and MODIS Observations  

Science Conference Proceedings (OSTI)

This study examines the warm rain formation process in global and regional cloud-resolving models. Methodologies developed to analyze CloudSat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations are employed to ...

Kentaroh Suzuki; Graeme L. Stephens; Susan C. van den Heever; Takashi Y. Nakajima

2011-11-01T23:59:59.000Z

104

Using Air Temperature to Quantitatively Predict the MODIS Fractional Snow Cover Retrieval Errors over the Continental US (CONUS)  

Science Conference Proceedings (OSTI)

Understanding and quantifying satellite-based remotely sensed snow cover uncertainty are critical for its successful utilization. The Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover errors have been previously recognized to be ...

Jiarui Dong; Mike Ek; Dorothy Hall; Christa Peters-Lidard; Brian Cosgrove; Jeff Miller; George Riggs; Youlong Xia

105

New Vegetation Albedo Parameters and Global Fields of Soil Background Albedo Derived from MODIS for Use in a Climate Model  

Science Conference Proceedings (OSTI)

New values are derived for snow-free albedo of five plant functional types (PFTs) and the soil/litter substrate from data acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on board Terra and Aqua. The derived albedo ...

Caroline J. Houldcroft; William M. F. Grey; Mike Barnsley; Christopher M. Taylor; Sietse O. Los; Peter R. J. North

2009-02-01T23:59:59.000Z

106

Evaluating Cloud Contamination in Clear-Sky MODIS Terra Daytime Land Surface Temperatures Using Ground-Based Meteorology Station Observations  

Science Conference Proceedings (OSTI)

Environment Canada meteorological station hourly sampled air temperatures Tair at four stations in the southwest Yukon were used to identify cloud contamination in the Moderate Resolution Imaging Spectroradiometer (MODIS) Terra clear-sky daytime ...

Scott N. Williamson; David S. Hik; John A. Gamon; Jeffrey L. Kavanaugh; Saewan Koh

2013-03-01T23:59:59.000Z

107

An Artificial Neural Network model to reduce false alarms in satellite precipitation products using MODIS and CloudSat observations  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectro-radiometer (MODIS) instrument aboard the NASA Earth Observing System (EOS) Aqua and Terra platform with 36 spectral bands provides valuable information about cloud microphysical characteristics and therefore ...

Nasrin Nasrollahi; Kuolin Hsu; Soroosh Sorooshian

108

Mountain Wave Signatures in MODIS 6.7-?m Imagery and Their Relation to Pilot Reports of Turbulence  

Science Conference Proceedings (OSTI)

A technique for nowcasting turbulent mountain waves over the Front Range of the state of Colorado is investigated using Moderate Resolution Imaging Spectroradiometer (MODIS) water vapor (6.7 ?m) channel imagery. Pilot reports of turbulence were ...

N. L. Uhlenbrock; K. M. Bedka; W. F. Feltz; S. A. Ackerman

2007-06-01T23:59:59.000Z

109

Model Assessment of the Ability of MODIS to Measure Top-of-Atmosphere Direct Radiative Forcing from Smoke Aerosols  

Science Conference Proceedings (OSTI)

The new generation of satellite sensors such as the moderate resolution imaging spectroradiometer (MODIS) will be able to detect and characterize global aerosols with an unprecedented accuracy. The question remains whether this accuracy will be ...

Lorraine A. Remer; Yoram J. Kaufman; Zev Levin; Steven Ghan

2002-02-01T23:59:59.000Z

110

MODIS-Derived Boundary Conditions for a Mesoscale Climate Model: Application to Irrigated Agriculture in the Euphrates Basin  

Science Conference Proceedings (OSTI)

In arid and semiarid parts of the world, evaporation from irrigated fields may significantly influence humidity, near-surface winds, and precipitation. Using Moderate Resolution Imaging Spectroradiometer (MODIS) Terra imagery from summer and ...

Benjamin F. Zaitchik; Jason Evans; Ronald B. Smith

2005-06-01T23:59:59.000Z

111

Confinement of airborne radioactivity. Progress report, January--December 1974  

SciTech Connect

Several commercial activated carbons, marketed for iodine removal in reactor off-gas cleanup systems, were evaluated for iodine penetration at elevated temperatures (4 hr at 180$sup 0$C), and the penetration data varied widely. Subsequent chemical analysis of the samples indicated a strong correlation between the atom ratio of iodine to potassium (I/K) in the carbon and the high-temperature performance data. Iodine penetration tests were also performed on several carbons in an intense gamma radiation field (greater than 10$sup 7$ rads/hr). Test data show that carbons intentionally exposed to high concentrations of DOP aerosol performed as well as unexposed carbons. Studies of the rate of evaporation of elemental iodine from aqueous solutions indicated that significant quantities of I$sub 2$ might be expected to become airborne within a short period of time (5 hr) after release to open ponds. Addition of sodium thiosulfate to the solution substantially reduced the evaporative loss of iodine; however, the effects of high-intensity radiation fields on iodine-thiosulfate solutions remain to be evaluated. Small HEPA filters containing filter media of the type used in the Savannah River confinement system were exposed to reactor building air and a high-intensity radiation field. Following this exposure, they were tested for flow performance under simulated accident conditions. Radiation exposure slightly impaired the performance of new filters and improved the performance of service-aged filters. Service aging effects on filter performance were far more significant than radiation effects. (auth)

Dexter, A.H.; Evans, A.G.; Jones, L.R.

1974-01-01T23:59:59.000Z

112

Understanding the AIRS, ARM, and MODIS cloud products by cross-comparison  

NLE Websites -- All DOE Office Websites (Extended Search)

Understanding the AIRS, ARM, and MODIS cloud products by cross-comparison Understanding the AIRS, ARM, and MODIS cloud products by cross-comparison Kahn, Brian Jet Propulsion Laboratory Eldering, Annmarie Jet Propulsion Laboratory Category: Cloud Properties We present comparisons of the Atmospheric Infrared Sounder (AIRS) operational cloud top height (CTH) to the active surface-based measurements of the Atmospheric Radiation Measurement (ARM) program sites in the tropical Western Pacific. The agreement is found to be consistent to other comparisons of passive IR-derived CTH from other measurement platforms despite the nominal footprint size of 45 km at nadir view. Independent comparisons of CTH to the millimeter-wave cloud radar at Manus Island and the micropulse lidar at Nauru Island indicate that the CTH retrieved by AIRS is statistically significant at the 5% level or less for cirrus cases

113

Quantitative room-temperature mineralization of airborne formaldehyde using  

NLE Websites -- All DOE Office Websites (Extended Search)

Quantitative room-temperature mineralization of airborne formaldehyde using Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts Title Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts Publication Type Journal Article Year of Publication 2011 Authors Sidheswaran, Meera A., Hugo Destaillats, Douglas P. Sullivan, Joern Larsen, and William J. Fisk Journal Applied Catalysis B - Environmental Issue 107 Pagination 34-41 Date Published 2011 Keywords commercial building ventilation & indoor environmental quality group, commercial building ventilation and indoor environmental quality group, energy analysis and environmental impacts department, indoor environment department, indoor environment group DOI 10.1016/j.apcatb.2011.06.032 Attachment Size

114

Airborne Process Commercial Scale Demonstration Program  

NLE Websites -- All DOE Office Websites (Extended Search)

CCPI 2) CCPI 2) contacts Brad tomer Director Office of Major Demonstrations National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 304-285-4692 brad.tomer@netl.doe.gov PaRtIcIPant Mustang Clean Energy, LLC, a subsidiary of Peabody Energy St. Louis, MO. Airborne Process(tm) commerciAl scAle DemonstrAtion ProgrAm (withDrAwn Prior to AwArD) Project Description Mustang Clean Energy will design, construct, and operate a full scale sodium-based multi-pollutant scrubber in conjunction with a revenue-generating fertilizer by-product processing plant at Mustang Energy Company, LLC's Mustang Generating Station. Both Mustang Clean Energy and Mustang Energy Company are subsidiaries of Peabody Energy, the world's largest coal company. The 300 MW (net) station will

115

Exposure to airborne asbestos in buildings  

SciTech Connect

The concentration of airborne asbestos in buildings and its implication for the health of building occupants is a major public health issue. A total of 2892 air samples from 315 public, commercial, residential, school, and university buildings has been analyzed by transmission electron microscopy. The buildings that were surveyed were the subject of litigation related to suits alleging the general building occupants were exposed to a potential health hazard as a result of exposure to the presence of asbestos containing materials (ACM). The average concentration of all asbestos structures was 0.02 structures/ml (s/ml) and the average concentration of asbestos greater than or equal to 5 microns long was 0.00013 fibers/ml (f/ml). The concentration of asbestos was higher in schools than in other buildings. In 48% of indoor samples and 75% of outdoor samples, no asbestos fibers were detected. The observed airborne concentration in 74% of the indoor samples and 96% of the outdoor samples is below the Asbestos Hazard Emergency Response Act clearance level of 0.01 s/ml. Finally, using those fibers which could be seen optically, all indoor samples and all outdoor samples are below the Occupational Safety and Health Administration permissible exposure level of 0.1 f/ml for fibers greater than or equal to 5 microns in length. These results provide substantive verification of the findings of the U.S. Environmental Protection Agency public building study which found very low ambient concentrations of asbestos fibers in buildings with ACM, irrespective of the condition of the material in the buildings.

Lee, R.J.; Van Orden, D.R.; Corn, M.; Crump, K.S. (RJ Lee Group, Inc., Monroeville, PA (United States))

1992-08-01T23:59:59.000Z

116

The Source of Airborne Lead: Recycling Pb-Contaminated Soils  

NLE Websites -- All DOE Office Websites (Extended Search)

The Source of Airborne Lead: Recycling The Source of Airborne Lead: Recycling Pb-Contaminated Soils Starting in the 1970s, federal regulatory control and eventual elimination of lead-based "anti-knock" additives in gasoline decreased the level of airborne Pb in the USA by two orders-of-magnitude [1]. Blood lead levels of the USA figure 1 Figure 1. The good, the bad, and the ugly. Ambient airborne particulate matter captured on filters of woven silica fiber (large strips) and TeflonTM (round). Clean fiber filter at bottom for comparison. Take a deep breath? population decreased correspondingly [2,3]. Despite this dramatic improvement in both exposure risk and body burden of Pb, the sources and health threat of the low levels of lead in our "unleaded" air remain topics

117

Accurate Airborne Surface Temperature Measurements with Chopper-stabilized Radiometers  

Science Conference Proceedings (OSTI)

The accuracy of chopper-stabilized radiometers for the meteorological measurement of surface temperatures was investigated during a series of airborne trails, including tests at high altitude using a pressurized aircraft. The significant finding ...

Dieter Lorenz

1991-06-01T23:59:59.000Z

118

Calibrations and performance of the airborne Cloud Extinction Probe  

Science Conference Proceedings (OSTI)

A new airborne instrument that measures extinction coefficient ? in clouds and precipitation has been designed by Environment Canada. The Cloud Extinction Probe (CEP) utilizes the transmissiometric method which is based on direct measurement of ...

Alexei Korolev; Alex Shashkov; Howard Barker

119

Airborne Cloud-Physics Projects From 1974 Through 1984  

Science Conference Proceedings (OSTI)

Most of the principal airborne cloud-physics projects during the ten-year period 1974-1984 are documented to provide selected information on the type and quantity of microphysical data that have beencollected. The emphasis is on measurements ...

Richard K. Jeck

1986-12-01T23:59:59.000Z

120

Human Occupancy as a Source of Indoor Airborne Bacteria  

E-Print Network (OSTI)

Exposure to specific airborne bacteria indoors is linked to infectious and noninfectious adverse health outcomes. However, the sources and origins of bacteria suspended in indoor air are not well understood. This study ...

Hospodsky, Denina

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


121

Feasibility Test of an Airborne Pulse-Doppler Meteorological Radar  

Science Conference Proceedings (OSTI)

A vertically scanning, airborne, pulse-Doppler radar is described. Data processing methods to yield pseudo-dual-Doppler horizontal winds are presented. Results of an intercomparison with a ground-based dual-Doppler network are presented and ...

David P. Jorgensen; Peter H. Hildebrand; Charles L. Frush

1983-05-01T23:59:59.000Z

122

Pre-EUCREX Intercomparison of Airborne Humidity Measuring Instruments  

Science Conference Proceedings (OSTI)

During the pre-EUCREX (European Cloud and Radiation Experiment) intercomparison of airborne instrumentation in January 1992, nine hygrometers mounted on three different aircraft were compared. Although the different instruments are based on ...

J. Ström; R. Busen; M. Quante; B. Guillemet; P. R. A. Brown; J. Heintzenberg

1994-10-01T23:59:59.000Z

123

Airborne Doppler Lidar Observations of Convective Phenomena in Oklahoma  

Science Conference Proceedings (OSTI)

On 30 June 1981, the wind fields around a variety of convective clouds, ranging from large thunderstorm complexes to isolated cumulus congestus, were observed in Oklahoma using an airborne Doppler lidar operated by the National Aeronautics and ...

Eugene W. McCaul Jr.; Howard B. Bluestein; Richard J. Doviak

1987-09-01T23:59:59.000Z

124

The NCAR Airborne Infrared Lidar System: Status and Applications  

Science Conference Proceedings (OSTI)

The National Center for Atmospheric Research Airborne Infrared Lidar System is being developed for Doppler wind measurements using heterodyne detection. Its design is based on a pulsed CO2 laser transmitter and a single continuous-wave CO2 laser ...

R. L. Schwiesow; M. P. Spowart

1996-02-01T23:59:59.000Z

125

The Influence of Surface and Interstitial Moisture on the Spectral Characteristics of Intertidal Sediments: Implications for Airborne Image Acquisition and Processing  

E-Print Network (OSTI)

Intertidal sediment distribution is an important factor in the understanding of estuarine ecological, morphological and pollution processes. Airborne remote sensing is identified as a cost-effective tool that may be used to provide accurate synoptic maps of estuarine sediment distributions. However, prior to the collection and analysis of airborne imagery, spectral characterization of intertidal sediments is fundamental. Through a series of in situ and laboratory reflectance (0.35--2.5 mm) experiments the spectral complexity of the Ribble Estuary, UK, intertidal sediments has been investigated. Positive relationships between Daedalus Airborne Thematic Mapper band 9 and band 10 simulated reflectance and percentage sand of intertidal sediments have been identified in the field (r2 5 0.51 and r2 5 0.61 ).

M. P. Rainey; A. N. Tyler; R. G. Bryant; D. J. Gilvear; P. Mcdonald

2000-01-01T23:59:59.000Z

126

Ensemble Kalman Filter Assimilation of Simulated HIWRAP Doppler Velocity Data in a Hurricane  

Science Conference Proceedings (OSTI)

This study utilizes ensemble Kalman filter (EnKF) observing system simulation experiments (OSSEs) to analyze the potential impact of assimilating radial velocity observations of hurricanes from the High-altitude Imaging Wind and Rain Airborne ...

Jason A. Sippel; Scott A. Braun; Fuqing Zhang; Yonghui Weng

2013-08-01T23:59:59.000Z

127

ARM Airborne Continuous carbon dioxide measurements  

SciTech Connect

The heart of the AOS CO2 Airborne Rack Mounted Analyzer System is the AOS Manifold. The AOS Manifold is a nickel coated aluminum analyzer and gas processor designed around two identical nickel-plated gas cells, one for reference gas and one for sample gas. The sample and reference cells are uniquely designed to provide optimal flushing efficiency. These cells are situated between a black-body radiation source and a photo-diode detection system. The AOS manifold also houses flow meters, pressure sensors and control valves. The exhaust from the analyzer flows into a buffer volume which allows for precise pressure control of the analyzer. The final piece of the analyzer is the demodulator board which is used to convert the DC signal generated by the analyzer into an AC response. The resulting output from the demodulator board is an averaged count of CO2 over a specified hertz cycle reported in volts and a corresponding temperature reading. The system computer is responsible for the input of commands and therefore works to control the unit functions such as flow rate, pressure, and valve control.The remainder of the system consists of compressors, reference gases, air drier, electrical cables, and the necessary connecting plumbing to provide a dry sample air stream and reference air streams to the AOS manifold.

Sebastien Biraud

2013-03-26T23:59:59.000Z

128

Development of a new airborne humidigraph system.  

Science Conference Proceedings (OSTI)

Modeling and measurements of aerosol properties is complicated by the hygroscopic behavior of the aerosols adding significant uncertainty to our best estimates of the direct effect aerosols exert on the radiative balance of the atmosphere. Airborne measurements of aerosol hygroscopicity are particularly challenging but critically needed. This motivated the development of a newly designed system which can measure the dependence of the aerosol light scattering coefficient (?sp) on relative humidity (RH), known as f(RH), in real-time at a rapid rate (humidity conditioners for simultaneous measurement of the ?sp at three different RHs. The humidity is directly controlled in exchanger cells without significant temperature disturbances and without particle dilution, heating or loss of volatile compounds. The single-wavelength nephelometers are illuminated by LED-based light sources thereby minimizing heating of the sample stream. The flexible design of the RH conditioners, consisting of a number of specially designed exchanger cells (driers or humidifiers), enables us to measure f(RH) under hydration or dehydration conditions (always starting with the aerosol in a known state) with a simple system re-configuration. These exchanger cells have been characterized for losses of particles using latex spheres and laboratory generated ammonium sulfate aerosols. Residence times of 6 - 9 s in the exchangers and subsequent lines is sufficient for most aerosols to attain equilibrium with the new water vapor content. The performance of this system has been assessed aboard DOE’s G-1 research aircraft during test flights over California, Oregon, and Washington.

Pekour, Mikhail S.; Schmid, Beat; Chand, Duli; Hubbe, John M.; Kluzek, Celine D.; Nelson, Danny A.; Tomlinson, Jason M.; Cziczo, Daniel J.

2012-12-06T23:59:59.000Z

129

ARM Airborne Continuous carbon dioxide measurements  

DOE Data Explorer (OSTI)

The heart of the AOS CO2 Airborne Rack Mounted Analyzer System is the AOS Manifold. The AOS Manifold is a nickel coated aluminum analyzer and gas processor designed around two identical nickel-plated gas cells, one for reference gas and one for sample gas. The sample and reference cells are uniquely designed to provide optimal flushing efficiency. These cells are situated between a black-body radiation source and a photo-diode detection system. The AOS manifold also houses flow meters, pressure sensors and control valves. The exhaust from the analyzer flows into a buffer volume which allows for precise pressure control of the analyzer. The final piece of the analyzer is the demodulator board which is used to convert the DC signal generated by the analyzer into an AC response. The resulting output from the demodulator board is an averaged count of CO2 over a specified hertz cycle reported in volts and a corresponding temperature reading. The system computer is responsible for the input of commands and therefore works to control the unit functions such as flow rate, pressure, and valve control.The remainder of the system consists of compressors, reference gases, air drier, electrical cables, and the necessary connecting plumbing to provide a dry sample air stream and reference air streams to the AOS manifold.

Sebastien Biraud

130

BioSAR Airborne Biomass Sensing System  

DOE Green Energy (OSTI)

This CRADA was developed to enable ORNL to assist American Electronics, Inc. test a new technology--BioSAR. BioSAR is a an airborne, low frequency (80-120 MHz {approx} FM radio frequencies) synthetic aperture radar (SAR) technology which was designed and built for NASA by ZAI-Amelex under Patrick Johnson's direction. At these frequencies, leaves and small branches are nearly transparent and the majority of the energy reflected from the forest and returned to the radar is from the tree trunks. By measuring the magnitude of the back scatter, the volume of the tree trunk and therefore the biomass of the trunks can be inferred. The instrument was successfully tested on tropical rain forests in Panama. Patrick Johnson, with American Electronics, Inc received a Phase II SBIR grant from DOE Office of Climate Change to further test and refine the instrument. Mr Johnson sought ORNL expertise in measuring forest biomass in order for him to further validate his instrument. ORNL provided ground truth measurements of forest biomass at three locations--the Oak Ridge Reservation, Weyerhaeuser Co. commercial pine plantations in North Carolina, and American Energy and Power (AEP) Co. hardwood forests in southern Ohio, and facilitated flights over these forests. After Mr. Johnson processed the signal data from BioSAR instrument, the processed data were given to ORNL and we attempted to derive empirical relationships between the radar signals and the ground truth forest biomass measurements using standard statistical techniques. We were unsuccessful in deriving such relationships. Shortly before the CRADA ended, Mr Johnson discovered that FM signal from local radio station broadcasts had interfered with the back scatter measurements such that the bulk of the signal received by the BioSAR instrument was not backscatter from the radar but rather was local radio station signals.

Graham, R.L.; Johnson, P.

2007-05-24T23:59:59.000Z

131

Quantitative Measurements of Path-Integrated Rain Rate by an Airborne Microwave Radiometer over the Ocean  

Science Conference Proceedings (OSTI)

Data on the airborne microwave radiometer, which is one of the sensors of the airborne microwave rain-scatterometer/radiometer (AMRS) system, are analyzed to infer path-integrated rain rate measured from topside. The equation of radiative ...

Masaharu Fujita; Ken'ichi Okamoto; Harunobu Masuko; Takeyuki Ojima; Nobuyoshi Fugono

1985-09-01T23:59:59.000Z

132

Fast Temperature and True Airspeed Measurements with the Airborne Ultrasonic Anemometer–Thermometer (AUSAT)  

Science Conference Proceedings (OSTI)

An airborne thermometer–anemometer with fast response is designed and built using the well-known sonic anemometer–thermometer technique. The shape of this new airborne sonic sensor, without the conventional style probes, is a cylinder with its ...

D. Cruette; A. Marillier; J. L. Dufresne; J. Y. Grandpeix; P. Nacass; H. Bellec

2000-08-01T23:59:59.000Z

133

Airborne Doppler Lidar Measurements of Valley Flows in Complex Coastal Terrain  

Science Conference Proceedings (OSTI)

Three-dimensional winds obtained with an airborne Doppler lidar are used to investigate the spatial structure of topographically driven flows in complex coastal terrain in Southern California. The airborne Doppler lidar collected four hours of ...

S. F. J. De Wekker; K. S. Godwin; G. D. Emmitt; S. Greco

2012-08-01T23:59:59.000Z

134

ARM - Evaluation Product - Airborne Visible/Infrared Imaging Spectrometer  

NLE Websites -- All DOE Office Websites (Extended Search)

ProductsAirborne Visible/Infrared Imaging ProductsAirborne Visible/Infrared Imaging Spectrometer (AVIRIS) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) 1997.08.01 - 1997.08.01 Site(s) SGP General Description AVIRIS is an optical sensor that delivers calibrated images of the upwelling spectral radiance in 224 contiguous spectral channels (bands) with wavelengths from 400 to 2500 nanometers. AVIRIS has been flown on two aircraft platforms: a NASA ER-2 jet and the Twin Otter turboprop. The main objective of the AVIRIS project is to identify, measure, and monitor constituents of the Earth's surface and atmosphere based on molecular absorption and particle scattering signatures. Research with

135

Airborne Electromagnetic Survey At Raft River Geothermal Area (1979) | Open  

Open Energy Info (EERE)

Electromagnetic Survey At Raft River Electromagnetic Survey At Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Airborne Electromagnetic Survey Activity Date 1979 Usefulness not indicated DOE-funding Unknown Exploration Basis To show that AEM methods can be useful in exploration for and defining geothermal systems Notes Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. References Christopherson, K.R.; Long, C.L.; Hoover, D.B. (1 September 1980) Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Retrieved from "http://en.openei.org/w/index.php?title=Airborne_Electromagnetic_Survey_At_Raft_River_Geothermal_Area_(1979)&oldid=510231

136

Flight Testing of an Advanced Airborne Natural Gas Leak Detection System  

SciTech Connect

ITT Industries Space Systems Division (Space Systems) has developed an airborne natural gas leak detection system designed to detect, image, quantify, and precisely locate leaks from natural gas transmission pipelines. This system is called the Airborne Natural Gas Emission Lidar (ANGEL) system. The ANGEL system uses a highly sensitive differential absorption Lidar technology to remotely detect pipeline leaks. The ANGEL System is operated from a fixed wing aircraft and includes automatic scanning, pointing system, and pilot guidance systems. During a pipeline inspection, the ANGEL system aircraft flies at an elevation of 1000 feet above the ground at speeds of between 100 and 150 mph. Under this contract with DOE/NETL, Space Systems was funded to integrate the ANGEL sensor into a test aircraft and conduct a series of flight tests over a variety of test targets including simulated natural gas pipeline leaks. Following early tests in upstate New York in the summer of 2004, the ANGEL system was deployed to Casper, Wyoming to participate in a set of DOE-sponsored field tests at the Rocky Mountain Oilfield Testing Center (RMOTC). At RMOTC the Space Systems team completed integration of the system and flew an operational system for the first time. The ANGEL system flew 2 missions/day for the duration for the 5-day test. Over the course of the week the ANGEL System detected leaks ranging from 100 to 5,000 scfh.

Dawn Lenz; Raymond T. Lines; Darryl Murdock; Jeffrey Owen; Steven Stearns; Michael Stoogenke

2005-10-01T23:59:59.000Z

137

Evaluation of Meteorological Airborne Doppler Radar. Part II: Triple-Doppler Analyses of Air Motions  

Science Conference Proceedings (OSTI)

This is Part II of a paper dealing with the capabilities and use of airborne Doppler radar to observe motions within storms. Part I deals with dual-Doppler analyses of convective storm structure, using airborne and combinations of airborne and ...

Cynthia K. Mueller; Peter H. Hildebrand

1985-09-01T23:59:59.000Z

138

Flight code validation simulator  

Science Conference Proceedings (OSTI)

An End-To-End Simulation capability for software development and validation of missile flight software on the actual embedded computer has been developed utilizing a 486 PC, i860 DSP coprocessor, embedded flight computer and custom dual port memory interface hardware. This system allows real-time interrupt driven embedded flight software development and checkout. The flight software runs in a Sandia Digital Airborne Computer (SANDAC) and reads and writes actual hardware sensor locations in which IMU (Inertial Measurements Unit) data resides. The simulator provides six degree of freedom real-time dynamic simulation, accurate real-time discrete sensor data and acts on commands and discretes from the flight computer. This system was utilized in the development and validation of the successful premier flight of the Digital Miniature Attitude Reference System (DMARS) in January 1995 at the White Sands Missile Range on a two stage attitude controlled sounding rocket.

Sims, B.A.

1995-08-01T23:59:59.000Z

139

Methods to determine the size distribution of airborne rhinovirus  

NLE Websites -- All DOE Office Websites (Extended Search)

Methods to determine the size distribution of airborne rhinovirus Methods to determine the size distribution of airborne rhinovirus Title Methods to determine the size distribution of airborne rhinovirus Publication Type Report Year of Publication 2004 Authors Russell, Marion L., Regine Goth-Goldstein, Michael G. Apte, and William J. Fisk Publisher Lawrence Berkeley National Laboratory Abstract About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Prior research has demonstrated that rhinovirus infections can be transmitted via person-to-person contact and via inhalation of infectious aerosols. Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. To detect airborne HRV, we developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine the assay detection limit of 5 fg of HRV RNA with a linear range over 10,000-fold. This assay was used to quantify the size distribution of an artificially-produced HRV aerosol captured with an Andersen six-stage cascade impactor. In future studies, we hope to use the methods developed here to characterize the size distribution of naturally occurring viral-aerosols

140

Method for measuring the size distribution of airborne rhinovirus  

NLE Websites -- All DOE Office Websites (Extended Search)

Method for measuring the size distribution of airborne rhinovirus Method for measuring the size distribution of airborne rhinovirus Title Method for measuring the size distribution of airborne rhinovirus Publication Type Conference Proceedings Year of Publication 2002 Authors Russell, Marion L., Regine Goth-Goldstein, Michael G. Apte, and William J. Fisk Conference Name Proceedings of the Indoor Air 2002 Conference, Monterey, CA Volume 1 Pagination 40-45 Publisher Indoor Air 2002, Santa Cruz, CA Abstract About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. We developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay for HRV and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine a detection limit of 5 fg of HRV RNA with a linear range over 1000-fold. To measure the size distribution of HRV aerosols, volunteers with a head cold spent two hours in a ventilated research chamber. Airborne particles from the chamber were collected using an Andersen Six-Stage Cascade Impactor. Each stage of the impactor was analyzed by quantitative RT-PCR for HRV. For the first two volunteers with confirmed HRV infection, but with mild symptoms, we were unable to detect HRV on any stage of the impactor

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


141

Geolocation of Multiple Targets from Airborne Video Without Terrain Data  

Science Conference Proceedings (OSTI)

The task of geolocating targets from airborne video is required for many applications in surveillance, law enforcement, reconnaissance, etc. The usual approaches to target geolocation involve terrain data, single target tracking, gimbal control of camera ... Keywords: Geolocation, IMU-Camera calibration, Tracking, Unmanned aerial vehicle

Kyung Min Han; Guilherme N. Desouza

2011-04-01T23:59:59.000Z

142

Mitigating Geomagnetic Noise in Airborne Magnetic Surveys using GPS  

E-Print Network (OSTI)

Mitigating Geomagnetic Noise in Airborne Magnetic Surveys using GPS S. Skone Department, a limiting factor remains ­ the small-amplitude variations caused by geomagnetic pulsations arising from the correlation of TEC variations with geomagnetic pulsations. Variations in TEC during intervals of Pc 3

Calgary, University of

143

Quality assurance program plan for radionuclide airborne emissions monitoring  

SciTech Connect

This Quality Assurance Program Plan identifies quality assurance program requirements and addresses the various Westinghouse Hanford Company organizations and their particular responsibilities in regards to sample and data handling of radiological airborne emissions. This Quality Assurance Program Plan is prepared in accordance with and to written requirements.

Boom, R.J.

1995-12-01T23:59:59.000Z

144

Quality Assurance Program Plan for radionuclide airborne emissions monitoring  

SciTech Connect

This Quality Assurance Program Plan (QAPP) describes the quality assurance requirements and responsibilities for radioactive airborne emissions measurements activities from regulated stacks are controlled at the Hanford Site. Detailed monitoring requirements apply to stacks exceeding 1% of the standard of 10 mrem annual effective dose equivalent to the maximally exposed individual from operations of the Hanford Site.

Vance, L.M.

1993-07-01T23:59:59.000Z

145

Derivation of Seasonal Cloud Properties at ARM-NSA from Multispectral MODIS Data  

NLE Websites -- All DOE Office Websites (Extended Search)

Derivation of Seasonal Cloud Properties at ARM-NSA Derivation of Seasonal Cloud Properties at ARM-NSA from Multispectral MODIS Data D. A. Spangenberg Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia T. Uttal National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado Q. Z. Trepte and S. S.-Mack Science Applications International Corporation Hampton, Virginia Introduction Improving climate model predictions over earth's Polar Regions requires a complete knowledge of polar cloud microphysics. Over the Arctic, there is minimal contrast between the clouds and background snow surface observed in satellite data, especially for visible wavelengths. This makes it difficult to

146

On the Annual Cycle, Variability, and Correlations of Oceanic Low-Topped Clouds with Large-Scale Circulation Using Aqua MODIS and ERA-Interim  

Science Conference Proceedings (OSTI)

Eight years of Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) level-3 cloud data in conjunction with collocated Interim ECMWF Re-Analysis are used to investigate relationships between isolated low-topped cloud fraction (LCF) and ...

Terence L. Kubar; Duane E. Waliser; J.-L. Li; Xianan Jiang

2012-09-01T23:59:59.000Z

147

Evaluation of MODIS gross primary productivity and land cover products for the humid tropics using oil palm trees in Peninsular Malaysia and Google Earth imagery  

Science Conference Proceedings (OSTI)

Conducting quantitative studies on the carbon balance or productivity of oil palm is important in understanding the role of this ecosystem in global climate change. In this study, we evaluated the accuracy of MODIS Moderate Resolution Imaging Spectroradiometer ...

Arthur Philip Cracknell, Kasturi Devi Kanniah, Kian Pang Tan, Lei Wang

2013-10-01T23:59:59.000Z

148

Airborne electromagnetic surveys as a reconnaissance technique for  

Open Energy Info (EERE)

electromagnetic surveys as a reconnaissance technique for electromagnetic surveys as a reconnaissance technique for geothermal exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Details Activities (1) Areas (1) Regions (0) Abstract: INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five Known Geothermal Resource Areas (KGRA's). AEM work has not been significantly utilized in the past for geothermal purposes because it was thought that a shallow exploration technique would not be effective. Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. INPUT responses in the form of

149

Validation of MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites  

NLE Websites -- All DOE Office Websites (Extended Search)

MODIS-Retrieved Cloud Fractions Using MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites Z. Li, M. C. Cribb, and F.-L. Chang Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland A. P. Trishchenko Canada Centre for Remote Sensing Ottawa, Ontario, Canada Introduction Given the importance of clouds in modulating the surface energy budget, it is critical to obtain accurate estimates of their fractional amount in the atmospheric column for use in modeling studies. Satellite remote sensing of cloud properties such as cloud amount has the advantage of providing global coverage on a regular basis. Ground-based surveys of cloud fraction offer a practical database for use in determining the accuracy of these remotely sensed estimates of cloud fraction on a regional scale.

150

The 13–14 December 2001 IMPROVE-2 Event. Part II: Comparisons of MM5 Model Simulations of Clouds and Precipitation with Observations  

Science Conference Proceedings (OSTI)

This paper compares airborne in situ observations of cloud microphysical parameters with the fifth-generation Pennsylvania State University–National Center for Atmospheric Research (PSU–NCAR) Mesoscale Model (MM5) simulations, using the Reisner-2 ...

Matthew F. Garvert; Christopher P. Woods; Brian A. Colle; Clifford F. Mass; Peter V. Hobbs; Mark T. Stoelinga; Justin B. Wolfe

2005-10-01T23:59:59.000Z

151

Airborne measurements of carbonaceous aerosols in southern Africa during  

NLE Websites -- All DOE Office Websites (Extended Search)

Airborne measurements of carbonaceous aerosols in southern Africa during Airborne measurements of carbonaceous aerosols in southern Africa during the dry, biomass burning season Title Airborne measurements of carbonaceous aerosols in southern Africa during the dry, biomass burning season Publication Type Journal Article LBNL Report Number LBNL-50880 Year of Publication 2003 Authors Kirchstetter, Thomas W., Tihomir Novakov, and Peter V. Hobbs Journal Journal of Geophysical Research - Atmospheres Keywords black carbon, evolved gas analysis, light absorption, organic carbon, positive sampling artifact, SAFARI Abstract Particulate matter collected aboard the University of Washington's Convair-580 research aircraft over southern Africa during the dry, biomass burning season was analyzed for total carbon, organic carbon, and black carbon contents using thermal and optical methods. Samples were collected in smoke plumes of burning savanna and in regional haze. A known artifact, produced by the adsorption of organic gases on the quartz filter substrates used to collect the particulate matter samples, comprised a significant portion of the total carbon collected. Consequently, conclusions derived from the data are greatly dependent on whether or not organic carbon concentrations are corrected for this artifact. For example, the estimated aerosol co-albedo (1 - single scattering albedo), which is a measure of aerosol absorption, of the biomass smoke samples is 60% larger using corrected organic carbon concentrations. Thus, the corrected data imply that the biomass smoke is 60% more absorbing than do the uncorrected data. The black carbon to (corrected) organic carbon mass ratio (BC/OC) of smoke plume samples (0.18±0.06) is lower than that of samples collected in the regional haze (0.25±0.08). The difference may be due to mixing of biomass smoke with background air characterized by a higher BC/OC ratio. A simple source apportionment indicates that biomass smoke contributes about three-quarters of the aerosol burden in the regional haze, while other sources (e.g., fossil fuel burning) contribute the remainder.

152

Source Apportionment of Airborne Particulate Matter using Inorganic and  

NLE Websites -- All DOE Office Websites (Extended Search)

Source Apportionment of Airborne Particulate Matter using Inorganic and Source Apportionment of Airborne Particulate Matter using Inorganic and Organic Species as Tracers Title Source Apportionment of Airborne Particulate Matter using Inorganic and Organic Species as Tracers Publication Type Journal Article Year of Publication 2012 Authors Wang, Yungang, Philip K. Hopke, X. Xia, Oliver V. Rattigan, David C. Chalupa, and M. J. Source Journal Atmospheric Environment Volume 55 Start Page 525 Pagination 525-532 Date Published 01/2012 Keywords source apportionment positive matrix factorization (pmf) particulate matter (pm) molecular markers (mm) aethalometer delta-c Abstract Source apportionment is typically performed on chemical composition data derived from particulate matter (PM) samples. However, many common sources no longer emit significant amounts of characteristic trace elements requiring the use of more comprehensive chemical characterization in order to fully resolve the PM sources. Positive matrix factorization (EPA PMF, version 4.1) was used to analyze 24-hr integrated molecular marker (MM), secondary inorganic ions, trace elements, carbonaceous species and light absorption data to investigate sources of PM2.5 in Rochester, New York between October 2009 and October 2010 to explore the role of specific MMs. An eight-factor solutionwas found for which the factors were identified as isoprene secondary organic aerosol (SOA), airborne soil, other SOA, diesel emissions, secondary sulfate, wood combustion, gasoline vehicle, and secondary nitrate contributing 6.9%, 12.8%, 3.7%, 7.8%, 45.5%, 9.1%, 7.9%, and 6.3% to the average PM2.5 concentration, respectively Concentrations of pentacosane, hexacosane, heptacosane, and octacosane in the gasoline vehicles factor were larger compared to diesel emissions. Aethalometer Delta-C was strongly associated with wood combustion. The compounds, n-heptacosanoic acid and n-octacosanoic acid, occasionally used in the past as tracers for road dust, were found to largely associate with SOA in this study. In comparison with a standard PMF analyses without MM, inclusion of themwas necessary to resolve SOA and wood combustion factors in urban areas.

153

Airborne Instrumentation Needs for Climate and Atmospheric Research  

SciTech Connect

Observational data are of fundamental importance for advances in climate and atmospheric research. Advances in atmospheric science are being made not only through the use of ground-based and space-based observations, but also through the use of in-situ and remote sensing observations acquired on instrumented aircraft. In order for us to enhance our knowledge of atmospheric processes, it is imperative that efforts be made to improve our understanding of the operating characteristics of current instrumentation and of the caveats and uncertainties in data acquired by current probes, as well as to develop improved observing methodologies for acquisition of airborne data.

McFarquhar, Greg; Schmid, Beat; Korolev, Alexei; Ogren, John A.; Russell, P. B.; Tomlinson, Jason M.; Turner, David D.; Wiscombe, Warren J.

2011-10-06T23:59:59.000Z

154

Prospecting by sampling and analysis of airborne particulates and gases  

DOE Patents (OSTI)

A method is claimed for prospecting by sampling airborne particulates or gases at a ground position and recording wind direction values at the time of sampling. The samples are subsequently analyzed to determine the concentrations of a desired material or the ratios of the desired material to other identifiable materials in the collected samples. By comparing the measured concentrations or ratios to expected background data in the vicinity sampled, one can select recorded wind directions indicative of the upwind position of the land-based source of the desired material.

Sehmel, G.A.

1984-05-01T23:59:59.000Z

155

Chemical detection using the airborne thermal infrared imaging spectrometer (TIRIS)  

SciTech Connect

A methodology is described for an airborne, downlooking, longwave infrared imaging spectrometer based technique for the detection and tracking of plumes of toxic gases. Plumes can be observed in emission or absorption, depending on the thermal contrast between the vapor and the background terrain. While the sensor is currently undergoing laboratory calibration and characterization, a radiative exchange phenomenology model has been developed to predict sensor response and to facilitate the sensor design. An inverse problem model has also been developed to obtain plume parameters based on sensor measurements. These models, the sensors, and ongoing activities are described.

Gat, N.; Subramanian, S.; Sheffield, M.; Erives, H. [Opto-Knowledge Systems, Inc. (United States); Barhen, J. [Oak Ridge National Lab., TN (United States)

1997-04-01T23:59:59.000Z

156

GPS/INS navigation precision and its effect on airborne radio occultation retrieval accuracy  

Science Conference Proceedings (OSTI)

An airborne radio occultation (RO) system has been developed to retrieve atmospheric profiles of refractivity, moisture, and temperature. The long-term objective of such a system is deployment on commercial aircraft to increase the quantity of moisture ... Keywords: Airborne radio occultation, GPS/INS precision, Retrieval accuracy

Paytsar Muradyan; Jennifer S. Haase; Feiqin Xie; James L. Garrison; Justin Voo

2011-07-01T23:59:59.000Z

157

Forecasting airborne pollen concentration time series with neural and neuro-fuzzy models  

Science Conference Proceedings (OSTI)

Forecasting airborne pollen concentrations is one of the most studied topics in aerobiology, due to its crucial application to allergology. The most used tools for this problem are single lineal regressions and autoregressive models (ARIMA). Notwithstanding, ... Keywords: Aerobiology, Airborne pollen, Forecasting, Neuro-fuzzy, Time series

José Luis Aznarte M.; José Manuel Benítez Sánchez; Diego Nieto Lugilde; Concepción de Linares Fernández; Consuelo Díaz de la Guardia; Francisca Alba Sánchez

2007-05-01T23:59:59.000Z

158

AIRBORNE RESEARCH & SURVEY FACILITY (ARSF) http://arsf.nerc.ac.uk  

E-Print Network (OSTI)

instruments can be made available for special applications: Large-format RC-10 aerial survey cameraAIRBORNE RESEARCH & SURVEY FACILITY (ARSF) http://arsf.nerc.ac.uk ANNOUNCEMENT OF OPPORTUNITY 2009 OCTOBER 2008 The Airborne Research & Survey Facility (ARSF) invites direct access applications for UK

159

NERC AIRBORNE RESEARCH & SURVEY FACILITY (ARSF) http://www.nerc.ac.uk/arsf/home.htm  

E-Print Network (OSTI)

-12 microns, 320 spatial pixels) Large-format RC-10 aerial survey camera, with images being suppliedNERC AIRBORNE RESEARCH & SURVEY FACILITY (ARSF) http://www.nerc.ac.uk/arsf/home.htm SPECIAL OF PROPOSALS: FRIDAY 9 OCTOBER 2009 The Airborne Research & Survey Facility (ARSF) invites applications

160

Biomass and Bioenergy 31 (2007) 646655 Estimating biomass of individual pine trees using airborne lidar  

E-Print Network (OSTI)

Biomass and Bioenergy 31 (2007) 646­655 Estimating biomass of individual pine trees using airborne biomass and bio-energy feedstocks. The overall goal of this study was to develop a method for assessing aboveground biomass and component biomass for individual trees using airborne lidar data in forest settings

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


161

Measurements of Ocean Surface Backscattering Using an Airborne 94-GHz Cloud Radar—Implication for Calibration of Airborne and Spaceborne W-Band Radars  

Science Conference Proceedings (OSTI)

Backscattering properties of the ocean surface have been widely used as a calibration reference for airborne and spaceborne microwave sensors. However, at millimeter-wave frequencies, the ocean surface backscattering mechanism is still not well ...

Lihua Li; Gerald M. Heymsfield; Lin Tian; Paul E. Racette

2005-07-01T23:59:59.000Z

162

Comparison of Airborne In Situ, Airborne Radar–Lidar, and Spaceborne Radar–Lidar Retrievals of Polar Ice Cloud Properties Sampled during the POLARCAT Campaign  

Science Conference Proceedings (OSTI)

This study illustrates the high potential of RALI, the French airborne radar–lidar instrument, for studying cloud processes and evaluating satellite products when satellite overpasses are available. For an Arctic nimbostratus ice cloud collected ...

Julien Delanoë; Alain Protat; Olivier Jourdan; Jacques Pelon; Mathieu Papazzoni; Régis Dupuy; Jean-Francois Gayet; Caroline Jouan

2013-01-01T23:59:59.000Z

163

A detailed calibration of a stack monitor used in the measurement of airborne radionuclides at a high energy proton accelerator  

E-Print Network (OSTI)

A detailed calibration of a stack monitor used in the measurement of airborne radionuclides at a high energy proton accelerator

Vaziri, K; Cossairt, J D; Böhnlein, D J; Elwyn, A J

1996-01-01T23:59:59.000Z

164

Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) | Open  

Open Energy Info (EERE)

Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Exploration Activity Details Location Chena Geothermal Area Exploration Technique Airborne Electromagnetic Survey Activity Date 2008 Usefulness not indicated DOE-funding Unknown Notes The airborne resistivity (Fig. 2; panel c) shows high values in most of the areas including the Chena pluton, with the exception of the very northern and southern portion of the map where the Paleozoic metamorphic unit is located. Lineations of low resistivity at the west end of the area are generally associated with the location of the valley fill. However, some

165

The Doppler Aerosol Wind Lidar (DAWN) Airborne, Wind-Profiling, Coherent-Detection Lidar System: Overview and Preliminary Flight Results  

Science Conference Proceedings (OSTI)

The first airborne wind measurements of a pulsed, 2-micron solid-state, high-energy, wind-profiling lidar system for airborne measurements are presented. The laser pulse energy is the highest to date in an eyesafe airborne wind lidar system. This ...

Michael J. Kavaya; Jeffrey Y. Beyon; Grady J. Koch; Mulugeta Petros; Paul J. Petzar; Upendra N. Singh; Bo C. Trieu; Jirong Yu

166

Selection of the 1.375-µm MODIS Channel for Remote Sensing of Cirrus Clouds and Stratospheric Aerosols from Space  

Science Conference Proceedings (OSTI)

Using spectral imaging data acquired with the Airborne Visible Infrared Imaging Spectrometer (AVIRIS) from an ER-2 aircraft at 20-km altitude during the NASA FIRE Phase II Cirrus field program, it was found that narrow channels near the center of ...

Bo-Cai Gao; Yoram J. Kaufman

1995-12-01T23:59:59.000Z

167

Solubility of airborne uranium compounds at the Fernald Environmental Management Project  

Science Conference Proceedings (OSTI)

The in vitro volubility of airborne uranium dusts collected at a former uranium processing facility now undergoing safe shutdown, decontamination and dismantling was evaluated by immersing air filters from high volume samplers in simulated lung fluid and measuring the {sup 238}U in sequential dissolution fractions using specific radiochemical analysis for uranium. X rays and photons from the decay of uranium and thorium remaining on the filter after each dissolution period were also directly measured using a planar germanium detector as a means for rapidly evaluating the volubility of the uranium bearing dusts. Results of these analyses demonstrate that two -distinct types of uranium bearing dusts were collected on the filters depending upon the location of the air samplers. The first material exhibited a dissolution half-time much less than one day and was most likely UO{sub 3}. The dissolution rate of the second material, which was most likely U{sub 3}O{sub 8}, exhibited two components. Approximately one-third of this material dissolved with a halftime much less than one day. The remaining two-thirds of the material dissolved with half times between 230 {+-} 16 d and 1350 {+-} 202 d. The dissolution rates for uranium determined by radiochemical analysis and by gamma spectrometry were similar. However, gamma spectrometry analysis suggested a difference between the half times of {sup 238}U and its daughter {sup 234}Th which may have important implications for in vivo monitoring of uranium.

Heffernan, T.E.; Lodwick, J.C.; Spitz, H.; Neton, J.; Soldano, M.

2000-04-04T23:59:59.000Z

168

Application Of Airborne Thermal Infrared Imagery To Geothermal Exploration  

Open Energy Info (EERE)

Thermal Infrared Imagery To Geothermal Exploration Thermal Infrared Imagery To Geothermal Exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Application Of Airborne Thermal Infrared Imagery To Geothermal Exploration Details Activities (0) Areas (0) Regions (0) Abstract: Burlington Northern (BN) conducted TIR surveys using a fixed wing aircraft over 17 different geothermal prospects in Washington, Montana and Wyoming because of this remote sensing tool's ability to detect variations in the heat emitted from the earth's surface. The surveys were flown at an average elevation of 5000 ft. above the ground surface which gave a spatial resolution of approximately 7 feet diameter. BN found thermal activity which had not been recognized previously in some prospects (e.g., Lester,

169

New Approaches to Differential Mobility Analysis for Airborne Measurements  

NLE Websites -- All DOE Office Websites (Extended Search)

to Differential Mobility to Differential Mobility Analysis for Airborne Measurements Rick Flagan Chemical Engineering and Environmental Science and Engineering California Institute of Technology Pasadena, CA 91125 Support: NSF, ONR, Davidow Foundation Differential Mobility Analysis Air Sample Aerosol Charger/Neutralizer (Atmospheric Pressure Chemical Ionization) Sheath Air Q sh ~ 10 Q a Volumetric flow rate Q s Exhaust Q ex =Q sh Differential Mobility Analyzer DMA (Aerodynamic Analog of Sector Mass Spectrometer) E F e =eE F drag = 6πµR p V C slip (λ /R p ) CPC Q a =Q s Steady or Scanned Voltage Migration Velocity * Mobility * Peclet number for migration v E = Z p E Z p = n p e k B T D Pe mig = electrophoretic migration diffusive transport = bv E D = bn p eE k B T Singly Charged Particles  Radial DMA  Cylindrical DMA E = V b Pe = eV k B T E =

170

Initial assessment of an airborne Ku-band polarimetric SAR.  

SciTech Connect

Polarimetric synthetic aperture radar (SAR) has been used for a variety of dual-use research applications since the 1940's. By measuring the direction of the electric field vector from radar echoes, polarimetry may enhance an analyst's understanding of scattering effects for both earth monitoring and tactical surveillance missions. Polarimetry may provide insight into surface types, materials, or orientations for natural and man-made targets. Polarimetric measurements may also be used to enhance the contrast between scattering surfaces such as man-made objects and their surroundings. This report represents an initial assessment of the utility of, and applications for, polarimetric SAR at Ku-band for airborne or unmanned aerial systems.

Raynal, Ann Marie; Doerry, Armin Walter

2013-02-01T23:59:59.000Z

171

Airborne Scanning Spectrometer for Remote Sensing of Cloud, Aerosol, Water Vapor, and Surface Properties  

Science Conference Proceedings (OSTI)

An airborne scanning spectrometer was developed for measuring reflected solar and emitted thermal radiation in 50 narrowband channels between 0.55 and 14.2 µm. The instrument provides multispectral images of outgoing radiation for purposes of ...

Michael D. King; W. Paul Menzel; Patrick S. Grant; Jeffrey S. Myers; G. Thomas Arnold; Steven E. Platnick; Liam E. Gumley; Si-Chee Tsay; Christopher C. Moeller; Michael Fitzgerald; Kenneth S. Brown; Fred G. Osterwisch

1996-08-01T23:59:59.000Z

172

Fixed-Antenna Pointing-Angle Calibration of Airborne Doppler Cloud Radar  

Science Conference Proceedings (OSTI)

Doppler velocity measurements from airborne meteorological Doppler radars require removal of the aircraft motion contribution in order to provide radial velocity of hydrometeor targets. This is a critical step for hydrometeor motion and wind ...

Samuel Haimov; Alfred Rodi

2013-10-01T23:59:59.000Z

173

A Comparison of Mixing Depths Observed by Ground-Based Wind Profilers and an Airborne Lidar  

Science Conference Proceedings (OSTI)

The authors compare the mixing depths in the daytime convective boundary layers that were observed remotely by wind profilers and an airborne lidar during the 1995 Southern Oxidants Study. The comparison is used to determine whether the mixing ...

A. B. White; C. J. Senff; R. M. Banta

1999-05-01T23:59:59.000Z

174

The ELDORA/ASTRAIA Airborne Doppler Weather Radar: High-Resolution Observations from TOGA COARE  

Science Conference Proceedings (OSTI)

The ELDORA/ASTRAIA (Electra Doppler Radar/Analyese Stereoscopic par Impulsions Aeroporte) airborne Doppler weather radar was recently placed in service by the National Center for Atmospheric Research and the Centre d'étude des Environnements ...

Peter H. Hildebrand; Wen-Chau Lee; Craig A. Walther; Charles Frush; Mitchell Randall; Eric Loew; Richard Neitzel; Richard Parsons; Jacques Testud; François Baudin; Alain LeCornec

1996-02-01T23:59:59.000Z

175

Extended Overdetermined Dual-Doppler Formalism in Synthesizing Airborne Doppler Radar Data  

Science Conference Proceedings (OSTI)

During the intensive observing period of the field phase of the Coupled Ocean–Atmosphere Response Experiment (COARE) of the Tropical Oceans and Global Atmosphere (TOGA) program, airborne Doppler radars capable of fore–aft scanning (dual-Doppler ...

Michel Chong; Cláudia Campos

1996-06-01T23:59:59.000Z

176

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 2, Appendices  

SciTech Connect

This document contains compiled data from the DOE Handbook on Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear facilities. Source data and example facilities utilized, such as the Plutonium Recovery Facility, are included.

Not Available

1994-12-01T23:59:59.000Z

177

A Solo-based automated quality control algorithm for airborne tail Doppler radar data  

Science Conference Proceedings (OSTI)

An automated quality control pre-processing algorithm for removing non-weather radar echoes in airborne Doppler radar data has been developed. This algorithm can significantly reduce the time and experience level required for interactive radar ...

Michael M. Bell; Wen-Chau Lee; Cory A. Wolff; Huaqing Cai

178

Correcting Airborne Temperature Data for Lags Introduced by Instruments with Two-Time-Constant Responses  

Science Conference Proceedings (OSTI)

Airborne resistance wire temperature sensors can introduce a time lag before ambient air temperature changes are registered. It has been found that a second-order linear response system adequately describes the behavior of the Rosemount non-...

G. W. Inverarity

2000-02-01T23:59:59.000Z

179

Simultaneous Measurement of Ocean Winds and Waves with an Airborne Coherent Real Aperture Radar  

Science Conference Proceedings (OSTI)

A coherent, X-band airborne radar has been developed to measure wind speed and direction simultaneously with directional wave spectra on the ocean. The coherent real aperture radar (CORAR) measures received power, mean Doppler shifts, and mean ...

William J. Plant; William C. Keller; Kenneth Hayes

2005-07-01T23:59:59.000Z

180

Design of a small fast steering mirror for airborne and aerospace applications  

E-Print Network (OSTI)

This thesis presents the analysis and design of a small advanced fast steering mirror (sAFSM) for airborne and aerospace platforms. The sAFSM provides feedback-controlled articulation of two rotational axes for precision ...

Boulet, Michael Thomas

2008-01-01T23:59:59.000Z

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


181

Preliminary Results from Multiparameter Airborne Rain Radar Measurement in the Western Pacific  

Science Conference Proceedings (OSTI)

Preliminary results are presented from multiparameter airborne radar measurements of tropical storms. The experiment was conducted in the western Pacific in September 1990 with the NASA DC-8 aircraft that was equipped with a dual-wavelength radar ...

Hiroshi Kumagai; Robert Meneghini; Toshiaki Kozu

1993-02-01T23:59:59.000Z

182

Variational Analysis for Airborne Conically Scanned Doppler Lidar to Retrieve Mesoscale Wind Fields  

Science Conference Proceedings (OSTI)

An airborne pulsed Doppler lidar implementing a downlooking conical scan rotating around the vertical axis is under development. The information contained in the measured radial velocities is studied to assess the capacity to retrieve the 3D wind ...

Alain Dabas; Julie Périn; Pierre H. Flamant

1997-10-01T23:59:59.000Z

183

The Structure of Thermals in Cumulus from Airborne Dual-Doppler Radar Observations  

Science Conference Proceedings (OSTI)

A newly developed technique for airborne dual-Doppler observations with the Wyoming Cloud Radar is used to characterize the velocity fields in vertical planes across cumulus turrets. The clouds sampled were continental in nature, with high bases (...

Rick Damiani; Gabor Vali; Samuel Haimov

2006-05-01T23:59:59.000Z

184

Pressure Measurements Using an Airborne Differential Absorption Lidar. Part I: Analysis of the Systematic Error Sources  

Science Conference Proceedings (OSTI)

Systematic error sources that require correction when making remote airborne measurements of the atmospheric pressure field in the lower troposphere, using an oxygen differential absorption lidar, are analyzed. A detailed analysis of this ...

Cyrille N. Flamant; Geary K. Schwemmer; C. Laurence Korb; Keith D. Evans; Stephen P. Palm

1999-05-01T23:59:59.000Z

185

Resolution and Accuracy of an Airborne Scanning Laser System for Beach Surveys  

Science Conference Proceedings (OSTI)

Airborne scanning laser technology provides an effective method to systematically survey surface topography and changes in that topography with time. In this paper the authors describe the capability of a rapid-response lidar system in which ...

J. H. Middleton; C. G. Cooke; E. T. Kearney; P. J. Mumford; M. A. Mole; G. J. Nippard; C. Rizos; K. D. Splinter; I. L. Turner

186

Quantification of the effects of shattering on airborne ice particle measurements  

Science Conference Proceedings (OSTI)

Ice particle shattering poses a serious problem to airborne characterization microstructure of ice clouds. Shattered ice fragments may contaminate particle measurements resulting in artificially high concentrations of small ice. The ubiquitous ...

A. V. Korolev; E. F. Emery; J. W. Strapp; S. G. Cober; G. A. Isaac

187

Airborne Measurements of Surface, Layer Turbulence over the Ocean during Cold Air Outbreaks  

Science Conference Proceedings (OSTI)

Airborne measurements of atmospheric turbulence spectra and cospectra made at the 50 m level above the western Atlantic Ocean during cold air outbreaks have been studied. The data cover nearshore areas of cloud streets or roll vortices. In the ...

Shu-Hsien Chou; Eueng-Nan Yeh

1987-12-01T23:59:59.000Z

188

Environmental Flow Impacts on Tropical Cyclone Structure Diagnosed from Airborne Doppler Radar Composites  

Science Conference Proceedings (OSTI)

Following a recent demonstration of multicase compositing of axisymmetric tropical cyclone (TC) structure derived from airborne Doppler radar measurements, the authors extend the analysis to the asymmetric structure using an unprecedented database ...

Paul D. Reasor; Robert Rogers; Sylvie Lorsolo

2013-09-01T23:59:59.000Z

189

Design and Sampling Characteristics of a New Airborne Aerosol Inlet for Aerosol Measurements in Clouds  

Science Conference Proceedings (OSTI)

Design of a new submicron aerosol inlet (SMAI) for airborne sampling of aerosol particles is introduced and its performance characteristics under a range of sampling conditions are presented. Analysis of inlet performance in clear-air and cloud ...

Lucas Craig; Allen Schanot; Arash Moharreri; David C. Rogers; Suresh Dhaniyala

2013-06-01T23:59:59.000Z

190

A Comparison of Near-Infrared Diode Laser Techniques for Airborne Hygrometry  

Science Conference Proceedings (OSTI)

High-frequency wavelength modulation spectroscopy and dual beam absorption noise canceler methods are compared for near-infrared laser detection of moisture at levels relevant to airborne hygrometry. Both techniques exhibit sensitivities ...

Joel A. Silver; David Christian Hovde

1998-02-01T23:59:59.000Z

191

NASA Cold Land Processes Experiment (CLPX 2002/03): Airborne Remote Sensing  

Science Conference Proceedings (OSTI)

This paper describes the airborne data collected during the 2002 and 2003 Cold Land Processes Experiment (CLPX). These data include gamma radiation observations, multi- and hyperspectral optical imaging, optical altimetry, and passive and active ...

Don Cline; Simon Yueh; Bruce Chapman; Boba Stankov; Al Gasiewski; Dallas Masters; Kelly Elder; Richard Kelly; Thomas H. Painter; Steve Miller; Steve Katzberg; Larry Mahrt

2009-02-01T23:59:59.000Z

192

Airborne Measurements of Wave Growth for Stable and Unstable Atmospheres in Lake Michigan  

Science Conference Proceedings (OSTI)

This paper presents the results of a joint program combining airborne laser profilometer and Waverider buoy measurements of synoptic wave conditions in Lake Michigan during the passage of an intense cold front. Measurements were made both before ...

Paul C. Liu; Duncan B. Ross

1980-11-01T23:59:59.000Z

193

The Estimation of Rainfall Parameters Using Spaceborne and Airborne Nadir-Pointing Radars  

Science Conference Proceedings (OSTI)

When pointed toward ground, spaceborne and airborne radars must use several frequencies in order to estimate rainfall parameters. It is now well known, for example, that the differences between specific attenuations at different frequencies ...

A. R. Jameson

1994-02-01T23:59:59.000Z

194

Airflow and Precipitation Fields within Deep Alpine Valleys Observed by Airborne Doppler Radar  

Science Conference Proceedings (OSTI)

Although airborne Doppler radar is increasingly relied upon to provide detailed descriptions of mesoscale precipitation systems in remote and complex meteorological settings, the utility of these observations has often been limited by the ...

Olivier Bousquet; Bradley F. Smull

2003-10-01T23:59:59.000Z

195

A Multichannel Cloud Pyranometer System for Airborne Measurement of Solar Spectral Reflectance by Clouds  

Science Conference Proceedings (OSTI)

The design and performance of a spectral radiometer system are described for airborne measurements of solar flux reflectance by clouds. The system consists of a pair of identical multichannel pyranometers: one installed on the top and the other ...

Shoji Asano; Masataka Shiobara; Yuji Nakanishi; Yukiharu Miyake

1995-06-01T23:59:59.000Z

196

Airborne and Ground-Based Measurements Using a High-Performance Raman Lidar  

Science Conference Proceedings (OSTI)

A high-performance Raman lidar operating in the UV portion of the spectrum has been used to acquire, for the first time using a single lidar, simultaneous airborne profiles of the water vapor mixing ratio, aerosol backscatter, aerosol extinction, ...

David N. Whiteman; Kurt Rush; Scott Rabenhorst; Wayne Welch; Martin Cadirola; Gerry McIntire; Felicita Russo; Mariana Adam; Demetrius Venable; Rasheen Connell; Igor Veselovskii; Ricardo Forno; Bernd Mielke; Bernhard Stein; Thierry Leblanc; Stuart McDermid; Holger Vömel

2010-11-01T23:59:59.000Z

197

An evaluation of airborne laser scan data for coalmine subsidence mapping  

Science Conference Proceedings (OSTI)

The accurate mapping of coalmine subsidence is necessary for the continued management of potential subsidence impacts. The use of airborne laser scan (ALS) data for subsidence mapping provides an alternative method to traditional ground-based approaches ...

D. R. Palamara; M. Nicholson; P. Flentje; E. Baafi; G. M. Brassington

2007-07-01T23:59:59.000Z

198

Fixed-antenna Pointing-angle Calibration of Airborne Doppler Cloud Radar  

Science Conference Proceedings (OSTI)

Doppler velocity measurements from airborne meteorological Doppler radars require removal of the aircraft motion contribution in order to provide radial velocity of hydrometeor targets. This is a critical step for hydrometeor motion and wind ...

Samuel Haimov; Alfred Rodi

199

Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer  

Science Conference Proceedings (OSTI)

Airborne reverse flow immersion thermometers were designed to prevent sensor wetting in cloud. Yet there is strong evidence that some wetting does occur and therefore also sensor evaporative cooling as the aircraft exits a cloud. Numerous ...

Yonggang Wang; Bart Geerts

2009-01-01T23:59:59.000Z

200

Use of the Inertial Dissipation Method for Calculating Turbulent Fluxes from Low-Level Airborne Measurements  

Science Conference Proceedings (OSTI)

Airborne measurements are currently used for computing turbulence fluxes of heat and momentum. The method generally used is the eddy correlation technique, which requires sophisticated equipments to calculate the absolute velocities of the air. ...

Pierre Durand; Leonardo De Sa; Aimé Druilhet; Frédérique Said

1991-02-01T23:59:59.000Z

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


201

The NPOESS Airborne Sounding Testbed Interferometer—Remotely Sensed Surface and Atmospheric Conditions during CLAMS  

Science Conference Proceedings (OSTI)

During the Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS), the National Polar-orbiting Operational Environmental Satellite System (NPOESS) Airborne Sounder Testbed-Interferometer (NAST-I), flying aboard the high-altitude ...

W. L. Smith Sr.; D. K. Zhou; A. M. Larar; S. A. Mango; H. B. Howell; R. O. Knuteson; H. E. Revercomb; W. L. Smith Jr.

2005-04-01T23:59:59.000Z

202

Quantification of the Effects of Shattering on Airborne Ice Particle Measurements  

Science Conference Proceedings (OSTI)

Ice particle shattering poses a serious problem to the airborne characterization of ice cloud microstructure. Shattered ice fragments may contaminate particle measurements, resulting in artificially high concentrations of small ice. The ubiquitous ...

A. V. Korolev; E. F. Emery; J. W. Strapp; S. G. Cober; G. A. Isaac

2013-11-01T23:59:59.000Z

203

Airborne Doppler Lidar Investigation of Sea Surface Reflectance at a 355-nm Ultraviolet Wavelength  

Science Conference Proceedings (OSTI)

The analysis of the sea surface reflectance for different incidence angles based on observations of an airborne Doppler lidar at an ultraviolet wavelength of 355 nm is described. The results were compared to sea surface reflectance models, ...

Zhigang Li; Christian Lemmerz; Ulrike Paffrath; Oliver Reitebuch; Benjamin Witschas

2010-04-01T23:59:59.000Z

204

Real-Time Airborne Analysis of Aircraft Data Supporting Operational Hurricane Forecasting  

Science Conference Proceedings (OSTI)

The Hurricane Research Division has developed a technique for real-time airborne analysis of aircraft data from reconnaissance and research flights in tropical cyclones. The technique uses an onboard workstation that analyzes flight-level ...

Joseph S. Griffin; Robert W. Burpee; Frank D. Marks Jr.; James L. Franklin

1992-09-01T23:59:59.000Z

205

A Wintertime Gulf Coast Squall Line Observed by EDOP Airborne Doppler Radar  

Science Conference Proceedings (OSTI)

An extensive wintertime squall line on 13 January 1995 occurring along the U.S. Gulf of Mexico coastline is examined using airborne radar observations combined with conventional data analysis. Flight tracks with the ER-2 Doppler radar (EDOP) ...

G. M. Heymsfield; J. B. Halverson; I. J. Caylor

1999-12-01T23:59:59.000Z

206

Airborne Observations of Fetch-Limited Waves in the Gulf of Tehuantepec  

Science Conference Proceedings (OSTI)

The authors present airborne observations of fetch-limited waves during strong offshore winds in the Gulf of Tehuantepec. The measurements, collected over a wide range of fetches, include one- and two-dimensional surface wavenumber spectra and ...

Leonel Romero; W. Kendall Melville

2010-03-01T23:59:59.000Z

207

Derivation of Effective Aerodynamic Surface Roughness in Urban Areas from Airborne Lidar Terrain Data  

Science Conference Proceedings (OSTI)

An automated technique was developed that uses only airborne lidar terrain data to derive the necessary parameters for calculation of effective aerodynamic surface roughness in urban areas. The technique provides parameters for geometric models ...

Donald E. Holland; Judith A. Berglund; Joseph P. Spruce; Rodney D. McKellip

2008-10-01T23:59:59.000Z

208

Design and development of an airborne microwave radiometer for atmospheric sensing  

E-Print Network (OSTI)

Satellite-based passive microwave remote sensing is a valuable tool for global weather monitoring and prediction. This thesis presents the design and development of a low-cost airborne weather sensing instrument to ...

Scarito, Michael P

2011-01-01T23:59:59.000Z

209

Resolution and Accuracy of an Airborne Scanning Laser System for Beach Surveys  

Science Conference Proceedings (OSTI)

Airborne scanning laser technology provides an effective method to systematically survey surface topography and changes in that topography with time. In this paper, the authors describe the capability of a rapid-response lidar system in which ...

J. H. Middleton; C. G. Cooke; E. T. Kearney; P. J. Mumford; M. A. Mole; G. J. Nippard; C. Rizos; K. D. Splinter; I. L. Turner

2013-10-01T23:59:59.000Z

210

Estimation of Cloud Physical Parameters from Airborne Solar Spectral Reflectance Measurements for Stratocumulus Clouds  

Science Conference Proceedings (OSTI)

A new method is proposed to retrieve various cloud physical parameters of water clouds from the solar-flux reflectances at four wavelengths measured by using the airborne Multi-channel Cloud Pyranometer (MCP) system. The MCP system was designed ...

Shoji Asano; Masataka Shiobara; Akihiro Uchiyama

1995-10-01T23:59:59.000Z

211

Detection of Ice Hydrometeor Alignment Using an Airborne W-band Polarimetric Radar  

Science Conference Proceedings (OSTI)

This paper presents airborne W-band polarimetric radar measurements at horizontal and vertical incidence on ice clouds using a 95-GHz radar on the University of Wyoming King Air research aircraft. Coincident, in situ measurements from probes on ...

J. Galloway; A. Pazmany; J. Mead; R. E. McIntosh; D. Leon; J. French; R. Kelly; G. Vali

1997-02-01T23:59:59.000Z

212

Retrieving Winds in the Surface Layer over Land Using an Airborne Doppler Lidar  

Science Conference Proceedings (OSTI)

Airborne Doppler wind lidars are increasingly being used to measure winds in the lower atmosphere at higher spatial resolution than ever before. However, wind retrieval in the range gates closest to the earth’s surface remains problematic. When a ...

K. S. Godwin; S. F. J. De Wekker; G. D. Emmitt

2012-04-01T23:59:59.000Z

213

A Portable Airborne Scanning Lidar System for Ocean and Coastal Applications  

Science Conference Proceedings (OSTI)

A portable compact airborne scanning lidar system based on the Riegl LMS-Q240i has been developed and its functionality demonstrated for oceanographic and coastal measurements. Differential GPS (DGPS) and an inertial navigation system are ...

Benjamin D. Reineman; Luc Lenain; David Castel; W. Kendall Melville

2009-12-01T23:59:59.000Z

214

An Objective Method for Deriving Atmospheric Structure from Airborne Lidar Observations  

Science Conference Proceedings (OSTI)

Wavelet analysis is applied to airborne infrared lidar data to obtain an objective determination of boundaries in aerosol backscatter that are associated with boundary layer structure. This technique allows high-resolution spatial variability of ...

K. J. Davis; N. Gamage; C. R. Hagelberg; C. Kiemle; D. H. Lenschow; P. P. Sullivan

2000-11-01T23:59:59.000Z

215

Airborne Measurements of the Wavenumber Spectra of Ocean Surface Waves. Part II: Directional Distribution  

Science Conference Proceedings (OSTI)

An airborne scanning lidar system acquires three-dimensional (3D) spatial topography of ocean surface waves. From the spatial data, wavenumber spectra are computed directly. The spectral properties in terms of the spectral slope and dimensionless ...

Paul A. Hwang; David W. Wang; Edward J. Walsh; William B. Krabill; Robert N. Swift

2000-11-01T23:59:59.000Z

216

SIMULATION AND EXPERIMENTAL VALIDATION OF AIRBORNE AND STRUCTURE-BORNE NOISE TRANSMISSION IN HVAC PLENUMS.  

E-Print Network (OSTI)

??This research demonstrates the usage of numerical acoustics to model sound and vibrational energy propagation in HVAC ducts and plenums. Noise and vibration in HVAC… (more)

Ramalingam, Srinivasan

2012-01-01T23:59:59.000Z

217

The Alpine Mountain–Plain Circulation: Airborne Doppler Lidar Measurements and Numerical Simulations  

Science Conference Proceedings (OSTI)

On summer days radiative heating of the Alps produces rising air above the mountains and a resulting inflow of air from the foreland. This leads to a horizontal transport of air from the foreland to the Alps, and a vertical transport from the ...

M. Weissmann; F. J. Braun; L. Gantner; G. J. Mayr; S. Rahm; O. Reitebuch

2005-11-01T23:59:59.000Z

218

Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius  

NLE Websites -- All DOE Office Websites (Extended Search)

Detecting and Evaluating the Effect Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius F.-L Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction Cirrus clouds can largely modify the solar reflected and terrestrial emitted radiances. The ubiquitous presence of cirrus clouds has a global coverage of about 20% to30% and more than 70% in the tropics (Wylie et al. 1994). The probability of cirrus clouds overlaying a low-level boundary layer cloud system is greater than 50% (Hahn et al. 1982, 1984; Tian and Curry 1989; Mace et al. 1997). They are often optically thin and semitransparent and frequently reside in high altitude overlapping with a low-level

219

Estimating The Effect of Biofuel on Land Cover Change Using Multi-Year Modis Land Cover Data  

SciTech Connect

There has been a growing debate on the effects of the increase in demands of biofuels on land use land cover (LULC) change with apprehension in some quarters that the growing demand for bioenergy as a clean fuel will result in widespread direct and indirect LULC change. However estimating both direct and indirect LULC change is challenging and will require development of accurate high frequency, high resolution (temporal and spatial) land use land cover data as well as new LULC models which can be used to locate, quantify and predict these changes. To assess whether the demand for biofuel has caused significant LULC we used MODIS land cover data (MCD12Q1) from 2001 to 2008 along with cropland data layer (CDL) to estimate cropland and grassland changes in United States for the years 2002-2008 as well as its correlation with biofuel growth.

Singh, Nagendra [ORNL; Bhaduri, Budhendra L [ORNL

2010-01-01T23:59:59.000Z

220

Cloud Microphysical and Radiative Properties Derived from MODIS, VIRS, AVHRR, and GMS Data Over the Tropical Western Pacific  

NLE Websites -- All DOE Office Websites (Extended Search)

Microphysical and Radiative Properties Derived Microphysical and Radiative Properties Derived from MODIS, VIRS, AVHRR, and GMS Data Over the Tropical Western Pacific G. D. Nowicki, M. L. Nordeen, P. W. Heck, D. R. Doelling, and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Atmospheric Sciences Division Langley Research Center Hampton, Virginia S. Sun-Mack Science Applications International Corporation Hampton, Virginia Introduction Utilization of the geostationary meteorological satellite (GMS) imagery has allowed for the derivation of cloud and radiative properties over the Tropical Western Pacific (TWP) on relatively high spatial and temporal scales. The layered bispectral threshold method (LBTM) has been applied to GMS data

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


221

The effects of improved residential furnace filtration on airborne particles  

SciTech Connect

Forced air furnaces with distributed ducting systems have always had an air filter, but traditionally the filter quality was only adequate to protect the furnace fan and heat exchanger from debris. In the past several years, there has been an increasing number of more effective particulate filters that are being marketed to reduce airborne particulate or dust. These include upgraded panel filters, passive electrostatic, active electrostatic, and HEPA or near-HEPA variants. Consumers are bewildered by the lack of standardized and comprehensible performance results and need better advice on whether it would be useful for them to upgrade their current furnace filter. In order to help them make these decisions, the whole range of available furnace filters were tested in six occupied houses. The filter efficiency was determined by particulate measurement in the ducting system before and after the filter. Indoor particulates were measured in a bedroom and living room, and outdoor levels were monitored simultaneously. Testing encompassed several weeks in each house, and the results are available in the whole range of particle sizes. The project also looked at the air-cleaning effectiveness of a stand-alone air cleaner and at the ozone production of electrostatic precipitators installed in 20 houses. Test results will be helpful in specifying suitable filtration for houses.

Fugler, D.; Bowser, D.; Kwan, W.

2000-07-01T23:59:59.000Z

222

Airborne spread of foot-and-mouth disease - model intercomparison  

SciTech Connect

Foot-and-mouth disease is a highly infectious vesicular disease of cloven-hoofed animals caused by foot-and-mouth disease virus. It spreads by direct contact between animals, by animal products (milk, meat and semen), by mechanical transfer on people or fomites and by the airborne route - with the relative importance of each mechanism depending on the particular outbreak characteristics. Over the years a number of workers have developed or adapted atmospheric dispersion models to assess the risk of foot-and-mouth disease virus spread through the air. Six of these models were compared at a workshop hosted by the Institute for Animal Health/Met Office during 2008. A number of key issues emerged from the workshop and subsequent modelling work: (1) in general all of the models predicted similar directions for 'at risk' livestock with much of the remaining differences strongly related to differences in the meteorological data used; (2) determination of an accurate sequence of events is highly important, especially if the meteorological conditions vary substantially during the virus emission period; and (3) differences in assumptions made about virus release, environmental fate, and subsequent infection can substantially modify the size and location of the downwind risk area. Close relationships have now been established between participants, which in the event of an outbreak of disease could be readily activated to supply advice or modelling support.

Gloster, J; Jones, A; Redington, A; Burgin, L; Sorensen, J H; Turner, R; Dillon, M; Hullinger, P; Simpson, M; Astrup, P; Garner, G; Stewart, P; D'Amours, R; Sellers, R; Paton, D

2008-09-04T23:59:59.000Z

223

Extraction of Mangrove Biophysical Parameters Using Airborne LiDAR  

E-Print Network (OSTI)

Abstract: Tree parameter determinations using airborne Light Detection and Ranging (LiDAR) have been conducted in many forest types, including coniferous, boreal, and deciduous. However, there are only a few scientific articles discussing the application of LiDAR to mangrove biophysical parameter extraction at an individual tree level. The main objective of this study was to investigate the potential of using LiDAR data to estimate the biophysical parameters of mangrove trees at an individual tree scale. The Variable Window Filtering (VWF) and Inverse Watershed Segmentation (IWS) methods were investigated by comparing their performance in individual tree detection and in deriving tree position, crown diameter, and tree height using the LiDAR-derived Canopy Height Model (CHM). The results demonstrated that each method performed well in mangrove forests with a low percentage of crown overlap conditions. The VWF method yielded a slightly higher accuracy for mangrove parameter extractions from LiDAR data compared with the IWS method. This is because the VWF method uses an adaptive circular filtering window size based on an allometric relationship. As a result of the VWF method, the position

Wasinee Wannasiri; Masahiko Nagai; Kiyoshi Honda; Phisan Santitamnont; Poonsak Miphokasap

2013-01-01T23:59:59.000Z

224

Emissions of airborne toxics from coal-fired boilers: Mercury  

Science Conference Proceedings (OSTI)

Concerns over emissions of hazardous air Pollutants (air toxics) have emerged as a major environmental issue, and the authority of the US Environmental Protection Agency to regulate such pollutants was greatly expanded through the Clean Air Act Amendments of 1990. Mercury has been singled out for particular attention because of concerns over possible effects of emissions on human health. This report evaluates available published information on the mercury content of coals mined in the United States, on mercury emitted in coal combustion, and on the efficacy of various environmental control technologies for controlling airborne emissions. Anthracite and bituminous coals have the highest mean-mercury concentrations, with subbituminous coals having the lowest. However, all coal types show very significant variations in mercury concentrations. Mercury emissions from coal combustion are not well-characterized, particularly with regard to determination of specific mercury compounds. Variations in emission rates of more than an order of magnitude have been reported for some boiler types. Data on the capture of mercury by environmental control technologies are available primarily for systems with electrostatic precipitators, where removals of approximately 20% to over 50% have been reported. Reported removals for wet flue-gas-desulfurization systems range between 35 and 95%, while spray-dryer/fabric-filter systems have given removals of 75 to 99% on municipal incinerators. In all cases, better data are needed before any definitive judgments can be made. This report briefly reviews several areas of research that may lead to improvements in mercury control for existing flue-gas-clean-up technologies and summarizes the status of techniques for measuring mercury emissions from combustion sources.

Huang, H.S.; Livengood, C.D.; Zaromb, S.

1991-09-01T23:59:59.000Z

225

Airborne Multisensor Pod System (AMPS) data access concept  

SciTech Connect

The purpose of this document is to provide the conceptual design for accessing data collected under the Airborne Multisensor Pod System (AMPS) program and for accessing data about that data. The purpose of the AMPS program is to provide multisensor data for data fusion research as it applies to arms control treaty verification, non-proliferation surveillance, and related programs. Secondary objectives include sensor development and technology demonstration. The program was established by the U.S. Department of Energy (DOE), Office of Arms Control and Non-proliferation (DOE/AN) and is integrated into the overall DOE AN-10.1 technology development program. The AMPS program interacts with other technology programs of DOE/NN-20. The AMPS program participants include five DOE laboratories. Four will be responsible for collecting and supplying data to AMPS data researchers: (1) Lawrence Livermore National Laboratory (LLNL); (2) Remote Sensing Laboratory (RSL); (3) Sandia National Laboratories (SNL); (4) Savannah River Technology Center (SRTC). The Pacific Northwest Laboratory (PNL), has been assigned data management responsibility for the program, which is defined as the process of planning, acquiring, organizing, qualifying and disseminating data. Data ranges from single sensor readings, to high resolution images, to video. The potential volume of data to be collected under the AMPS program will require considerable management effort. The AMPS program specifies a distributed approach for the sharing and management of AMPS data. This approach shares the burden of data distribution across the DOE laboratories, which will be responsible for AMPS instruments development and implementation and the data those instruments produce. This approach will also provide the laboratories with direct control over the distribution of the data for which they are responsible.

Jou, Jiing-Yih J.; Meitzler, W.D.

1994-10-01T23:59:59.000Z

226

Ground-Based and Airborne (PMS 2-D Probe Canister-Mounted) 183 GHz Water  

NLE Websites -- All DOE Office Websites (Extended Search)

Ground-Based and Airborne (PMS 2-D Probe Canister-Mounted) 183 GHz Water Ground-Based and Airborne (PMS 2-D Probe Canister-Mounted) 183 GHz Water Vapor Radiometer Pazmany, Andrew ProSensing Inc. Category: Instruments ProSensing Inc. has developed a G-band (183 GHz, 1.5 mm wavelength) water vapor radiometer (GVR) for the measurement of low concentrations of atmospheric water vapor and liquid water. The instrument's precipitable water vapor measurement precision is approximately 0.01 mm in dry (<2 mm vapor column) conditions. The ground-based version of the instrument was first deployed at ProSensing's facility in Amherst, MA in February 2005, then at the North Slope of Alaska DOE ARM site in Barrow AK in April 2005, where it has been continuously operating since. An airborne version, designed to operate from a standard PMS 2-D probe canister, is now being

227

Airborne-temperature-survey maps of heat-flow anomalies for exploration geology  

DOE Green Energy (OSTI)

Airborne temperature surveys were used to depict the small surface temperature differences related to heat flow anomalies. Zones with conductive heat flow differences of 45 +- 16 ..mu..cal/cm/sup 2/(s) had predawn surface temperature differences of 1.4 +- 0.3/sup 0/C. Airborne temperature surveys were coordinated with field temperature surveys at Long Valley, California, the site of a known geothermal resource area. The airborne temperature surveys recorded redundant, predawn temperatures at two wavelengths and at two elevations. Overall temperature corrections were determined by calibrating dry soil surface temperatures with thermistor probes. The probes measured air and soil temperatures within 2 cm of the surface, every twenty minutes, during the survey overflights.

Del Grande, N.K.

1982-07-09T23:59:59.000Z

228

Modeling & Simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

Modeling & Simulation Modeling & Simulation Research into alternative forms of energy, especially energy security, is one of the major national security imperatives of this...

229

ARM - Field Campaign - NASA Coordinated Airborne CO2 Lidar Flight Test  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsNASA Coordinated Airborne CO2 Lidar Flight Test Campaign govCampaignsNASA Coordinated Airborne CO2 Lidar Flight Test Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : NASA Coordinated Airborne CO2 Lidar Flight Test Campaign 2009.07.27 - 2009.08.07 Lead Scientist : Edward Browell For data sets, see below. Description This airborne field test campaign was designed to obtain a coordinated set of remote CO2 Laser Absorption Spectrometer (LAS) measurements using the NASA Langley/ITT 1.57-micron Continuous-Wave (CW) LAS operating from the NASA Langley UC-12 aircraft; the NASA Goddard 1.57-micron pulsed LAS operating from the NASA Glenn Lear-25 aircraft; and the NASA Jet Propulsion Laboratory 2.0-micron CW-coherent LAS operating from a contracted Twin Otter aircraft. These remote LAS CO2 column measurements were compared with

230

Analysis of Airborne Doppler Lidar Measurements of the Extended California Sea Breeze  

Science Conference Proceedings (OSTI)

The analysis of airborne Doppler lidar data taken by NASA near the top of the planetary boundary layer in the central valley of California is presented. These data include downward wan angles that intercept the ground. The maximum errors in the ...

John J. Carroll

1989-10-01T23:59:59.000Z

231

Airborne Particulate Matter in HVAC Systems and its Influence on Indoor Air Quality  

E-Print Network (OSTI)

This paper first reviews the mechanisms governing movement of PMs in HVAC systems. Then, the basic equations governing PM deposition in ducts are introduced and investigations on airborne PMs distribution in HVAC systems are reviewed. The influence of PMs on indoor air quality and effectiveness of corresponding controlling measures is discussed extensively in the paper. Finally, recommendations for further research are given.

Fu, Z.; Li, N.; Wang, H.

2006-01-01T23:59:59.000Z

232

Improved Airborne Hot-Wire Measurements of Ice Water Content in Clouds  

Science Conference Proceedings (OSTI)

Airborne measurements of ice water content (IWC) in both ice and mixed phase clouds remain one of the long standing problems in experimental cloud physics. For nearly three decades, IWC has been measured with the help of the Nevzorov hot-wire ...

A. Korolev; J. W. Strapp; G. A. Isaac; E. Emery

233

Artificial neural networks to predict corn yield from Compact Airborne Spectrographic Imager data  

Science Conference Proceedings (OSTI)

In the light of recent advances in spectral imaging technology, highly flexible modeling methods must be developed to estimate various soil and crop parameters for precision farming from airborne hyperspectral imagery. The potential of artificial neural ... Keywords: Artificial neural networks, CASI, Corn, Crop yield, Hyperspectral remote sensing, Precision agriculture

Y. Uno; S. O. Prasher; R. Lacroix; P. K. Goel; Y. Karimi; A. Viau; R. M. Patel

2005-05-01T23:59:59.000Z

234

Estimation and Mapping of Hurricane Turbulent Energy Using Airborne Doppler Measurements  

Science Conference Proceedings (OSTI)

Hurricane turbulent kinetic energy (TKE) was computed using airborne Doppler measurements from the NOAA WP-3D tail radars, and TKE data were retrieved for a variety of storms at different stages of their life cycle. The geometry of the radar ...

Sylvie Lorsolo; Jun A. Zhang; Frank Marks Jr.; John Gamache

2010-09-01T23:59:59.000Z

235

Open Access Development of a Methodology to Estimate Biomass from Tree Height Using Airborne Digital Image  

E-Print Network (OSTI)

Copyright © 2012 J. Jenitha Ferdinent and Raj Chandar Padmanaban. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Globally biomass is becoming imperative for function such as climate change, combined heat and power generation. The biomass energy is gaining significance as a source of clean heat for domestic heating and community heating applications. Regarding climatic change and global warming, the biomass is being estimated in various ways. By including three dimensions (i.e.) height of a tree or stand height of trees in forest will greatly help in estimation biomass more accurately. Traditionally close range Photogrammetry is used to determine volume and biomass of the tree. However, this method of volume/height of a tree is not feasible in large scale applications and time consuming. Globally researchers are working to estimate this by using either airborne/space borne data. In this project, a methodology to measure tree height in case of single tree or stand height (mean tree height) of an area is developed using airborne digital camera. The height of the tree was first estimated from the airborne digital camera image data. The image taken from Airborne UltraCamD has been used. This image is 23cm X 15cm image size and 20cm resolution. Aerial

J. Jenitha Ferdinent; Raj Ch; Ar Padmanaban

2013-01-01T23:59:59.000Z

236

Measurement of Condensed Water Content in Liquid and Ice Clouds Using an Airborne Counterflow Virtual Impactor  

Science Conference Proceedings (OSTI)

Condensed water content (CWC) measured using a counterflow virtual impactor (CVI) with a Lyman-? hygrometer downstream is compared with that measured by other airborne instruments (a hot-wire probe, a PMS FSSP, and a PMS 2D-C). Results indicate ...

Cynthia H. Twohy; Allen J. Schanot; William A. Cooper

1997-02-01T23:59:59.000Z

237

SAFIRE-A: Spectroscopy of the Atmosphere Using Far-Infrared Emission/Airborne  

Science Conference Proceedings (OSTI)

A new instrument named SAFIRE-A (Spectroscopy of the Atmosphere using Far-Infrared Emission/Airborne), which can operate on high-altitude platforms, has been developed for the study of the atmospheric composition through limb-scanning emission ...

Bruno Carli; Peter A. R. Ade; Ugo Cortesi; Paul Dickinson; Michele Epifani; Fred C. Gannaway; Alessandro Gignoli; Corneli Keim; Clare Lee; Claude Meny; Jean Leotin; Francesco Mencaraglia; Alexander G. Murray; Ira G. Nolt; Marco Ridolfi

1999-10-01T23:59:59.000Z

238

Application of Airborne Field Mill Data for Use in Launch Support  

Science Conference Proceedings (OSTI)

An airborne field mill (ABFM) system was implemented on a Learjet 36A and was used to collect electric-field and microphysical data for summertime convective clouds new Cape Canaveral and the Kennedy Space Center. This system is described and the ...

Ray Harris-Hobbs; Kathy Giori; Michael Bellmore; Arleen Lunsford

1994-06-01T23:59:59.000Z

239

Wind Tunnel Tests of the Airborne PVM-100A Response to Large Droplets  

Science Conference Proceedings (OSTI)

The Gerber Scientific, Inc. Particle Volume Monitor (PVM) is widely used to measure the liquid water content (LWC) and droplet effective radius (reff) of water clouds. The LWC response of the airborne version of this instrument, the PVM-100A, was ...

M. Wendisch; T. J. Garrett; J. W. Strapp

2002-10-01T23:59:59.000Z

240

Measurement of airborne radioactivity from the Fukushima reactor accident in Tokushima, Japan  

E-Print Network (OSTI)

The airborne radioactive isotopes from the Fukushima Daiichi nuclear plant was measured in Tokushima, western Japan. The continuous monitoring has been carried out in Tokushima. From March 23, 2011 the fission product $^{131}$I was observed. The radioisotopes $^{134}$Cs and $^{137}$Cs were also observed in the beginning of April. However the densities were extremely smaller than the Japanese regulation of radioisotopes.

Fushimi, K; Sakama, M; Sakaguchi, Y

2011-01-01T23:59:59.000Z

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


241

Measurement of airborne radioactivity from the Fukushima reactor accident in Tokushima, Japan  

E-Print Network (OSTI)

The airborne radioactive isotopes from the Fukushima Daiichi nuclear plan t was measured in Tokushima, western Japan. The continuous monitoring has been carried out in Tokushima. From March 23, 2011 the fission product $^{131}$I was observed. The radioisotopes $^{134}$Cs and $^{137}$Cs were also observed in the beginning of April. However the densities were extremely smaller than the Japanese regulation of radioisotopes.

K. Fushimi; S. Nakayama; M. Sakama; Y. Sakaguchi

2011-04-19T23:59:59.000Z

242

An Airborne Millimeter-Wave Imaging Radiometer for Cloud, Precipitation, and Atmospheric Water Vapor Studies  

Science Conference Proceedings (OSTI)

A six-channel airborne total-power Millimeter-wave Imaging Radiometer (MIR) was recently built to provide measurements of atmospheric water vapor, clouds, and precipitation. The instrument is a cross-track scanner that has a 3-dB beamwidth of 3.5°...

P. Racette; R. F. Adler; J. R. Wang; A. J. Gasiewski; D. M. Jakson; D. S. Zacharias

1996-06-01T23:59:59.000Z

243

Experimental Validation of Wind Profiling Performed by the Airborne 10-?m Heterodyne Doppler Lidar WIND  

Science Conference Proceedings (OSTI)

The airborne Wind Infrared Doppler Lidar (WIND) has been developed through French–German cooperation. The system is based on a pulsed 10.6-?m laser transmitter, a heterodyne receiver, and a conical scanning device. To the authors' knowledge, it ...

Oliver Reitebuch; Christian Werner; Ines Leike; Patricia Delville; Pierre H. Flamant; Alexander Cress; Dirk Engelbart

2001-08-01T23:59:59.000Z

244

Airborne Measurements of Air Mass from O2 A-Band Absorption Spectra  

Science Conference Proceedings (OSTI)

Airborne experiments to assess the feasibility of remote sensing surface pressure from a space platform are described. The data are high-resolution spectra in the O2 A band (759–771 nm) of sunlight reflected from the sea surface, measured by a ...

D. M. O’Brien; R. M. Mitchell; S. A. English; G. A. Da Costa

1998-12-01T23:59:59.000Z

245

Airborne lidar surveys are an at-tractive alternative to the methods  

E-Print Network (OSTI)

to changing from a visual- based aerial survey (wide swath, shallow penetration) to a lidar-based Modeling264 Airborne lidar surveys are an at- tractive alternative to the methods presentlyusedinfishery-independent surveys of epipelagic fishes (Hunter and Churnside1). They would cost much less per survey mile than ship

246

Comparison between the TOPAZ Airborne Ozone Lidar and In Situ Measurements during TexAQS 2006  

Science Conference Proceedings (OSTI)

The NOAA airborne ozone lidar system [Tunable Optical Profiler for Aerosol and Ozone (TOPAZ)] is compared with the fast-response chemiluminescence sensor flown aboard the NOAA WP-3D during the 2006 Texas Air Quality Study (TexAQS). TOPAZ ...

A. O. Langford; C. J. Senff; R. J. Alvarez II; R. M. Banta; R. M. Hardesty; D. D. Parrish; T. B. Ryerson

2011-10-01T23:59:59.000Z

247

Three-Dimensional Mapping of Fluorescent Dye Using a Scanning, Depth-Resolving Airborne Lidar  

Science Conference Proceedings (OSTI)

Results are presented from a pilot study using a fluorescent dye tracer imaged by airborne lidar in the ocean surface layer on spatial scales of meters to kilometers and temporal scales of minutes to hours. The lidar used here employs a scanning, ...

M. A. Sundermeyer; E. A. Terray; J. R. Ledwell; A. G. Cunningham; P. E. LaRocque; J. Banic; W. J. Lillycrop

2007-06-01T23:59:59.000Z

248

Sediment facies classification of a sandy shoreline by means of airborne imaging spectroscopy  

Science Conference Proceedings (OSTI)

Airborne imaging spectroscopy data (AISA Eagle and HyMap) were applied to classify the sediments of a sandy beach in seven sand type classes. On the AISA-Eagle data, several classification strategies were tried out and compared with each other. The best ...

B. Deronde; P. Kempeneers; R. Houhuys; J. -P. Henriet; V. Van Lancker

2008-08-01T23:59:59.000Z

249

Network Simulation  

SciTech Connect

A detailed introduction to the design, implementation and use of network simulation tools is presented. The requirements and issues faced in the design of simulators for wired and wireless networks are discussed. Abstractions such as packet- and fluid-level network models are covered. Several existing simulations are given as examples, with details and rationales regarding design decisions presented. Issues regarding performance and scalability are discussed in detail, describing how one can utilize distributed simulation methods to increase the scale and performance of a simulation environment. Finally, a case study of two simulation tools is presented that have been developed using distributed simulation techniques. This text is essential to any student, researcher or network architect desiring a detailed understanding of how network simulation tools are designed, implemented, and used.

Fujimoto, Richard [ORNL; Perumalla, Kalyan S [ORNL; Riley, George F. [Georgia Institute of Technology

2006-01-01T23:59:59.000Z

250

Strong Links Between Teleconnections and Ecosystem Exchange Found at a Pacific Northwest Old-Growth Forest from Flux Tower and MODIS EVI Data  

SciTech Connect

Variability in three Pacific teleconnection patterns are examined to see if net carbon exchange at a low-elevation, old-growth forest is affected by climatic changes associated with these periodicities. Examined are the Pacific Decadal Oscillation (PDO), Pacific/North American Oscillation (PNA) and El Nino-Southern Oscillation (ENSO). We use nine years of eddy covariance CO{sub 2}, H{sub 2}O and energy fluxes measured at the Wind River AmeriFlux site, Washington, USA and eight years of tower-pixel remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to address this question. We compute a new Composite Climate Index (CCI) based on the three Pacific Oscillations to divide the measurement period into positive- (2003 and 2005), negative- (1999 and 2000) and neutral-phase climate years (2001, 2002, 2004, 2006 and 2007). The forest transitioned from an annual net carbon sink (NEP = + 217 g C m{sup -2} year{sup -1}, 1999) to a source (NEP = - 100 g C m{sup -2} year{sup -1}, 2003) during two dominant teleconnection patterns. Net ecosystem productivity (NEP), water use efficiency (WUE) and light use efficiency (LUE) were significantly different (P < 0.01) during positive (NEP = -0.27 g C m{sup -2} day{sup -1}, WUE = 4.1 mg C/g H{sub 2}O, LUE = 0.94 g C MJ{sup -1}) and negative (NEP = +0.37 g C m{sup -2} day{sup -1}, WUE = 3.4 mg C/g H{sub 2}O, LUE = 0.83 g C MJ{sup -1}) climate phases. The CCI was linked to variability in the MODIS Enhanced Vegetation Index (EVI) but not to MODIS Fraction of absorbed Photosynthetically Active Radiation (FPAR). EVI was highest during negative climate phases (1999 and 2000) and was positively correlated with NEP and showed potential for using MODIS to estimate teleconnection-driven anomalies in ecosystem CO{sub 2} exchange in old-growth forests. This work suggests that any increase in the strength or frequency of ENSO coinciding with in-phase, low frequency Pacific oscillations (PDO and PNA) will likely increase CO{sub 2} uptake variability in Pacific Northwest conifer forests.

Wharton, S; Chasmer, L; Falk, M; Paw U, K T

2009-03-12T23:59:59.000Z

251

Simulation Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Building simulation tool screen capture Building simulation tool screen capture Simulation Tools Researchers develop whole-building energy simulation software programs that allow architects and building engineers to design or retrofit buildings for maximum energy efficiency and occupant comfort. Programs developed by researchers include: the EnergyPlus whole building simulation program, the Modelica Buildings library for rapid prototyping and controls design, the Building Controls Virtual Test Bed for co-simulation and for model-based operation, and the GenOpt generic optimization program. Contacts Philip Haves PHaves@lbl.gov (510) 486-6512 Michael Wetter MWetter@lbl.gov (510) 486-6990 Links Simulation Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings

252

Structure and Evolution of Hurricane Claudette on 7 September 1991 from Airborne Doppler Radar Observations. Part I: Kinematics  

Science Conference Proceedings (OSTI)

On 7 September 1991, an experiment was conducted with the two National Oceanic and Atmospheric Administration (NOAA) WP-3D research aircraft to investigate the inner-core region of Hurricane Claudette. Both aircraft carried airborne Doppler radar,...

Frank Roux; Nicolas Viltard

1995-09-01T23:59:59.000Z

253

Nanoscale Imaging of Airborne Particles Mike Bogan Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road,  

NLE Websites -- All DOE Office Websites (Extended Search)

Diagnostics with an X-ray Laser? Lessons from the First Diagnostics with an X-ray Laser? Lessons from the First Nanoscale Imaging of Airborne Particles Mike Bogan Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA What does airborne particulate matter look like? How do we develop quantitative descriptors for particles of complex morphology? These challenges were highlighted in the NIST workshop report "Aerosol Metrology Needs for Climate Science" (Dec, 2011). Sure, we can capture aerosol particles on surfaces - removing them from their airborne state - and probe them with high resolution optical and chemical imaging tools, but what information do we lose about the airborne particles? How can we follow dynamics? In this talk we will explore these very basic questions and their importance to combustion

254

Vertical Velocity and Buoyancy Characteristics of Coherent Echo Plumes in the Convective Boundary Layer, Detected by a Profiling Airborne Radar  

Science Conference Proceedings (OSTI)

Aircraft and airborne millimeter-wave radar observations are used to interpret the dynamics of radar echoes and radar-inferred updrafts within the well-developed, weakly sheared continental convective boundary layer. Vertically pointing radar ...

Qun Miao; Bart Geerts; Margaret LeMone

2006-06-01T23:59:59.000Z

255

Low-Wavenumber Structure and Evolution of the Hurricane Inner Core Observed by Airborne Dual-Doppler Radar  

Science Conference Proceedings (OSTI)

The asymmetric dynamics of the hurricane inner-core region is examined through a novel analysis of high temporal resolution, three-dimensional wind fields derived from airborne dual-Doppler radar. Seven consecutive composites of Hurricane Olivia’...

Paul D. Reasor; Michael T. Montgomery; Frank D. Marks Jr.; John F. Gamache

2000-06-01T23:59:59.000Z

256

Development and Application of a Compact, Tunable, Solid-State Airborne Ozone Lidar System for Boundary Layer Profiling  

Science Conference Proceedings (OSTI)

The National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Chemical Sciences Division (NOAA/ESRL/CSD) has developed a versatile, airborne lidar system for measuring ozone and aerosols in the boundary layer and lower free ...

R. J. Alvarez II; C. J. Senff; A. O. Langford; A. M. Weickmann; D. C. Law; J. L. Machol; D. A. Merritt; R. D. Marchbanks; S. P. Sandberg; W. A. Brewer; R. M. Hardesty; R. M. Banta

2011-10-01T23:59:59.000Z

257

Structure and Evolution of Hurricane Claudette on 7 September 1991 from Airborne Doppler Radar Observations. Part II: Thermodynamics  

Science Conference Proceedings (OSTI)

In Part I, the kinematic and precipitating fields of Hurricane Claudette have been analyzed, using airborne Doppler radar data collected on 7 September 1991 by the two National Oceanic and Atmospheric Administration (NOAA) WP-3D research ...

Nicolas Viltard; Frank Roux

1998-02-01T23:59:59.000Z

258

Intercomparison of Single-Frequency Methods for Retrieving a Vertical Rain Profile from Airborne or Spaceborne Radar Data  

Science Conference Proceedings (OSTI)

This paper briefly reviews several single-frequency rain profiling methods for an airborne or spaceborne radar. The authors describe the different methods from a unified point of view starting from the basic differential equation. This ...

Toshio Iguchi; Robert Meneghini

1994-12-01T23:59:59.000Z

259

Aerosol Size Spectra in a Convective Marine Layer with Stratus: Results of Airborne Measurements near San Nicolas Island, California  

Science Conference Proceedings (OSTI)

Airborne measurements of the aerosol size spectra n (r) (r is radius) were made in a vertical plane extending northeastward 18 km from San Nicolas Island, California. Thin, patchy, stratus clouds were present in a deepening convective marine ...

V. Ray Noonkester

1981-09-01T23:59:59.000Z

260

A Dual-Pulse Repetition Frequency Scheme for Mitigating Velocity Ambiguities of the NOAA P-3 Airborne Doppler Radar  

Science Conference Proceedings (OSTI)

To mitigate some of the deleterious effects of the relatively small unambiguous Doppler velocity range (Nyquist interval) of airborne X-band Doppler radars, a technique has been developed to extend this interval. This technique, termed the batch-...

David P. Jorgensen; Tom R. Shepherd; Alan S. Goldstein

2000-05-01T23:59:59.000Z

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


261

Application of Clouds Occurrence Climatology from CALIOP to Evaluate Performances of Airborne and Satellite Electro-Optical Sensors  

Science Conference Proceedings (OSTI)

A wide variety of optronic sensors, onboard satellite or airborne platform, are used for remote sensing, surveillance applications or telecommunications. Cloud presence in the field of view is one of the key factors limiting the performances of ...

A. Bizard; K. Caillault; C. Lavigne; A. Roblin; P. Chervet

262

Initialization of a Cloud-Resolving Model with Airborne Doppler Radar Observations of an Oceanic Tropical Convective System  

Science Conference Proceedings (OSTI)

Doppler radar–derived fields of wind and reflectivity, retrieved temperature perturbations, estimated water vapor, and cloud water contents are used to initialize a nonhydrostatic cloud-resolving model. Airborne Doppler data collected in a ...

Soline Bielli; Frank Roux

1999-06-01T23:59:59.000Z

263

Inference of Marine Atmospheric Boundary Layer Moisture and Temperature Structure Using Airborne Lidar and Infrared Radiometer Data  

Science Conference Proceedings (OSTI)

A new technique for retrieving near-surface moisture and profiles of mixing ratio and potential temperature through the depth of the marine atmospheric boundary layer (MABL) using airborne lidar and multichannel infrared radiometer data is ...

Stephen P. Palm; Denise Hagan; Geary Schwemmer; S. H. Melfi

1998-03-01T23:59:59.000Z

264

High-Resolution Atmospheric Sensing of Multiple Atmospheric Variables Using the DataHawk Small Airborne Measurement System  

Science Conference Proceedings (OSTI)

The DataHawk small airborne measurement system provides in situ atmospheric measurement capabilities for documenting scales as small as 1 m and can access reasonably large volumes in and above the atmospheric boundary layer at low cost. The design ...

Dale A. Lawrence; Ben B. Balsley

2013-10-01T23:59:59.000Z

265

Experiments of Hurricane Initialization with Airborne Doppler Radar Data for the Advanced Research Hurricane WRF (AHW) Model  

Science Conference Proceedings (OSTI)

Initialization of the hurricane vortex in weather prediction models is vital to intensity forecasts out to at least 48 h. Airborne Doppler radar (ADR) data have sufficiently high horizontal and vertical resolution to resolve the hurricane vortex ...

Qingnong Xiao; Xiaoyan Zhang; Christopher Davis; John Tuttle; Greg Holland; Patrick J. Fitzpatrick

2009-09-01T23:59:59.000Z

266

Airborne Measurements of the Wavenumber Spectra of Ocean Surface Waves. Part I: Spectral Slope and Dimensionless Spectral Coefficient  

Science Conference Proceedings (OSTI)

An airborne scanning lidar system acquires 3D spatial topography of ocean surface waves. From the spatial data, wavenumber spectra are computed directly. The spectral analyses of two distinctively different wave fields are presented. The first ...

Paul A. Hwang; David W. Wang; Edward J. Walsh; William B. Krabill; Robert N. Swift

2000-11-01T23:59:59.000Z

267

Assimilating Airborne Doppler Radar Observations with an Ensemble Kalman Filter for Convection-Permitting Hurricane Initialization and Prediction: Katrina (2005)  

Science Conference Proceedings (OSTI)

Through a Weather Research and Forecasting model (WRF)-based ensemble Kalman filter (EnKF) data assimilation system, the impact of assimilating airborne radar observations for the convection-permitting analysis and prediction of Hurricane Katrina (...

Yonghui Weng; Fuqing Zhang

2012-03-01T23:59:59.000Z

268

An Airborne Profiling Radar Study of the Impact of Glaciogenic Cloud Seeding on Snowfall from Winter Orographic Clouds  

Science Conference Proceedings (OSTI)

Data from an airborne vertically pointing millimeter-wave Doppler radar are used to study the cloud microphysical effect of glaciogenic seeding of cold-season orographic clouds. Fixed flight tracks were flown downstream of ground-based silver ...

Bart Geerts; Qun Miao; Yang Yang; Roy Rasmussen; Daniel Breed

2010-10-01T23:59:59.000Z

269

INSIGHTS FROM LABORATORY AND AIRBORNE BRDF MEASUREMENTS FOR SATELLITE REMOTE SENSING  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosols and Aerosols and Surface Optical Properties from Airborne Spectral Measurements of Directional Reflectance C.K.Gatebe 1,2 & M.D. King, 2,3 Collaborators: O. Dubovik, 4 A.Sinyuk, 2,5 P. Russell, 6 J. Redemann 6 Acknowledgements: G.T. Arnold (SSAI & GSFC) Gala Wind (SSAI & GSFC) Rajesh Poudyal (SSAI & GSFC) Hal Maring & Andy Roberts (NASA HQ) 1 University of Maryland, Baltimore County 2 NASA Goddard Space Flight Center 3 University of Colorado 4 Laboratoire d'Optique Atmosphérique 5 Science Systems and Applications Inc. 6 NASA Ames Research Center Background: CAR Airborne Platforms 1998-2008 NASA P-3B Convair CV-580 Aerocommander 690A Jetstream-31 AATS SSFR/BBR SSFR CAR The NASA P-3B 2008 BBR CAR Time CAR Quicklook Image 2008 http://car.gsfc.nasa.gov/data/ BRDF Measurements

270

"Airborne Wind Energy - Harnessing a Vast, Untapped Renewable Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

November 14, 2012, 4:15pm November 14, 2012, 4:15pm Colloquia MBG Auditorium "Airborne Wind Energy - Harnessing a Vast, Untapped Renewable Energy Source" Dr. Kenneth Jensen Makani Power Inc. At just 500 m above the ground, the average power density of the wind is double that at 100 m where wind turbines typically reside. This makes high-altitude wind one of the most concentrated forms of renewable energy after hydro-power. Building conventional wind turbines at this height is uneconomical, which begs the question: how do we harness this concentrated and completely untapped resource? Makani Power is developing a novel airborne wind turbine (AWT), which consists of a turbine-carrying aircraft that is tethered to the ground. Propelled by the wind, the AWT travels in a circular path (similar to the

271

Correlation between predicted and observed levels of airborne tritium at Lawrence Livermore Laboratory site boundary  

Science Conference Proceedings (OSTI)

At the Lawrence Livermore Laboratory, a computer code based on the Gaussian plume model is used to estimate radiation doses from routine or accidental release of airborne radioactive material. Routine releases of tritium have been used as a test of the overall uncertainty associated with these estimates. The ration of concentration to release rate at distances from the two principal release points to each of six site boundary sampling locations has been calcuated using local meteorological data. The concentration of airborne tritiated water vapor is continuously measured at the six sampling stations as part of the Laboratory's environmental monitoring program. Comparison of predicted with observed annual tritiated water concentrations in 1978 showed an average ratio of 2.6 with a range of from 0.97 to 5.8.

Lindeken, C.L.; Silver, W.J.; Toy, A.J.; White, J.H.

1980-02-19T23:59:59.000Z

272

Apparatus for real-time airborne particulate radionuclide collection and analysis  

DOE Patents (OSTI)

An improved apparatus for collecting and analyzing an airborne particulate radionuclide having a filter mounted in a housing, the housing having an air inlet upstream of the filter and an air outlet downstream of the filter, wherein an air stream flows therethrough. The air inlet receives the air stream, the filter collects the airborne particulate radionuclide and permits a filtered air stream to pass through the air outlet. The improvement which permits real time counting is a gamma detecting germanium diode mounted downstream of the filter in the filtered air stream. The gamma detecting germanium diode is spaced apart from a downstream side of the filter a minimum distance for a substantially maximum counting detection while permitting substantially free air flow through the filter and uniform particulate radionuclide deposition on the filter.

Smart, John E. (West Richland, WA); Perkins, Richard W. (Richland, WA)

2001-01-01T23:59:59.000Z

273

A model for forming airborne synthetic aperture radar images of underground targets  

SciTech Connect

Synthetic Aperture Radar (SAR) from an airborne platform has been proposed for imaging targets beneath the earth`s surface. The propagation of the radar`s energy within the ground, however, is much different than in the earth`s atmosphere. The result is signal refraction, echo delay, propagation losses, dispersion, and volumetric scattering. These all combine to make SAR image formation from an airborne platform much more challenging than a surface imaging counterpart. This report treats the ground as a lossy dispersive half-space, and presents a model for the radar echo based on measurable parameters. The model is then used to explore various imaging schemes, and image properties. Dynamic range is discussed, as is the impact of loss on dynamic range. Modified window functions are proposed to mitigate effects of sidelobes of shallow targets overwhelming deeper targets.

Doerry, A.W.

1994-01-01T23:59:59.000Z

274

A Progressive Morphological Filter for Removing Nonground Measurements from Airborne LIDAR Data  

E-Print Network (OSTI)

Recent advances in airborne light detection and ranging (LIDAR) technology allow rapid and inexpensive measurements of topography over large areas. This technology is becoming a primary method for generating high-resolution digital terrain models (DTMs) that are essential to numerous applications such as flood modeling and landslide prediction. Airborne LIDAR systems usually return a three-dimensional cloud of point measurements from reflective objects scanned by the laser beneath the flight path. In order to generate a DTM, measurements from nonground features such as buildings, vehicles, and vegetation have to be classified and removed. In this paper, a progressive morphological filter was developed to detect nongroundLIDARmeasurements.By gradually increasingthe window size of the filter andusing elevation difference thresholds, themeasurements of vehicles, vegetation, and buildings are removed, while ground data are preserved. Datasets from mountainous and flat urbanized areas were selected to test the progressive morphological filter. The results show that the filter can remove most of the nonground points effectively.

Keqi Zhang; Shu-ching Chen; Dean Whitman; Mei-ling Shyu; Jianhua Yan; Chengcui Zhang; Student Member

2003-01-01T23:59:59.000Z

275

Modeling Plot-Level Biomass and Volume Using Airborne and Terrestrial Lidar Measurements  

E-Print Network (OSTI)

The United States Forest Service (USFS) Forest Inventory and Analysis (FIA) program provides a diverse selection of data used to assess the status of the nation’s forested areas using sample locations dispersed throughout the country. Airborne, and more recently, terrestrial lidar (light detection and ranging) systems are capable of producing accurate measurements of individual tree dimensions and also possess the ability to characterize three-dimensional vertical forest structure. This study investigates the potential of airborne and terrestrial scanning lidar systems for modeling forest volume and aboveground biomass on FIA subplots in the Malheur National Forest, eastern Oregon. A methodology for the creation of five airborne lidar metric sets (four point cloud-based and one individual tree based) and four terrestrial lidar metric sets (three height-based and one distance-based) is presented. Metrics were compared to estimates of subplot aboveground biomass and gross volume derived from FIA data using national and regional allometric equations respectively. Simple linear regression models from the airborne lidar data accounted for 15 percent of the variability in subplot biomass and 14 percent of the variability in subplot volume, while multiple linear regression models increased these amounts to 29 percent and 25 percent, respectively. When subplot estimates of biophysical parameters were scaled to the plot-level and compared with plot-level lidar metrics, simple linear regression models were able to account for 60 percent of the variability in biomass and 71 percent of the variation in volume. Terrestrial lidar metrics produced moderate results with simple linear regression models accounting for 41 percent of the variability in biomass and 46 percent of the variability in volume, with multiple linear regression models accounting for 71 percent and 84 percent, respectively. Results show that: (1) larger plot sizes help to mitigate errors and produce better models; and (2) a combination of height-based and distance-based terrestrial lidar metrics has the potential to estimate biomass and volume on FIA subplots.

Sheridan, Ryan D.

2011-05-01T23:59:59.000Z

276

A long-term study of radon and airborne particulates at phosphogypsum stacks in central Florida  

SciTech Connect

The EPA is presently assessing the significance of radioactive emissions from phosphogypsum stacks to determine if they should be regulated under the Clean Air Act. As part of this assessment, a one-year study was conducted to measure the airborne radionuclide emissions from five phosphogypsum stacks in central Florida. This report provides a detailed description of this study. Measurements were conducted over a 12-month period on four active and one inactive phosphogypsum stacks. The study included the following measurements: 1260 radon-222 flux, 90 ambient radon-222, and 50 gamma-ray exposure rates. Also, radionuclide analyses were performed on 33 airborne particulate samples, 9 airborne particle-size samples, and 50 phosphogypsum samples. The annual average radon flux determined for the dry-loose material on top of active phosphogypsum stacks was 20 pCi/mS-s, and is regarded as representative of stacks in the central Florida region. The annual average flux on the top surface of the inactive stack was 4 to 5 times smaller, due to a surface crust. The data suggest that to obtain a representative annual average radon flux on a phosphogypsum stack the total number of measurements made is more important than the period of time over which the measurements are made. 11 ref., 16 figs., 24 tabs.

Horton, T.R.; Blanchard, R.L.; Windham, S.T.

1988-10-01T23:59:59.000Z

277

Gamma-analysis of airborne particulates sampled in Youzhno-Sakhalinsk town at March - April 2011  

E-Print Network (OSTI)

The experience of discovery of the radioactive products which have released into atmosphere of Sakhalin region from Fukushima Daiichi accident is presented. Sampling of airborne particulates and atmosphere fallout was carried out by means of the air ventilation set and horizontal gauze planchs, respectively. The HPGe detector was used for gamma analyses of the airborne samples. Since 23 March we confidently measured 131I in the airborne samples, after 03.04.2011 we also registered a rise of activity 137Cs and 134Cs. 132Te and 132I were discovered in ashen sample of the planch, which had exposed in Youzhno-Kurilk from 14 to 17 March. The effect of the pairs production when in the samples 208Tl presence, which emits gamma-quanta of 2615 keV, causes a rise in apparatus spectra of the peak corresponding to energy 1593 keV, which could be in error ascribed to 140La. It had been experimentally shown that the systematic reduction of 134Cs content in measuring samples due to effect of gamma - gamma coincidence did not exceed 7 % (for the detector and geometry of the measurement used).

E. G. Tertyshnik; V. P. Martynenko; F. A. Andreev; G. B. Artemyev

2012-03-22T23:59:59.000Z

278

Gamma-analysis of airborne particulates sampled in Youzhno-Sakhalinsk town at March - April 2011  

E-Print Network (OSTI)

The experience of discovery of the radioactive products which have released into atmosphere of Sakhalin region from Fukushima Daiichi accident is presented. Sampling of airborne particulates and atmosphere fallout was carried out by means of the air ventilation set and horizontal gauze planchs, respectively. The HPGe detector was used for gamma analyses of the airborne samples. Since 23 March we confidently measured 131I in the airborne samples, after 03.04.2011 we also registered a rise of activity 137Cs and 134Cs. 132Te and 132I were discovered in ashen sample of the planch, which had exposed in Youzhno-Kurilk from 14 to 17 March. The effect of the pairs production when in the samples 208Tl presence, which emits gamma-quanta of 2615 keV, causes a rise in apparatus spectra of the peak corresponding to energy 1593 keV, which could be in error ascribed to 140La. It had been experimentally shown that the systematic reduction of 134Cs content in measuring samples due to effect of gamma - gamma coincidence did no...

Tertyshnik, E G; Andreev, F A; Artemyev, G B

2012-01-01T23:59:59.000Z

279

AIRBORNE, OPTICAL REMOTE SENSING OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION  

SciTech Connect

Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. This second six-month technical report summarizes the progress made towards defining, designing, and developing the hardware and software segments of the airborne, optical remote methane and ethane sensor. The most challenging task to date has been to identify a vendor capable of designing and developing a light source with the appropriate output wavelength and power. This report will document the work that has been done to identify design requirements, and potential vendors for the light source. Significant progress has also been made in characterizing the amount of light return available from a remote target at various distances from the light source. A great deal of time has been spent conducting laboratory and long-optical path target reflectance measurements. This is important since it helps to establish the overall optical output requirements for the sensor. It also reduces the relative uncertainty and risk associated with developing a custom light source. The data gathered from the optical path testing has been translated to the airborne transceiver design in such areas as: fiber coupling, optical detector selection, gas filters, and software analysis. Ophir will next, summarize the design progress of the transceiver hardware and software development. Finally, Ophir will discuss remaining project issues that may impact the success of the project.

Jerry Myers

2003-11-12T23:59:59.000Z

280

AIRBORNE, OPTICAL REMOTE SENSING OF METHANE AND ETHANE FOR NATURAL GAS PIPLINE LEAK DETECTION  

SciTech Connect

Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. The third six-month technical report contains a summary of the progress made towards finalizing the design and assembling the airborne, remote methane and ethane sensor. The vendor has been chosen and is on contract to develop the light source with the appropriate linewidth and spectral shape to best utilize the Ophir gas correlation software. Ophir has expanded upon the target reflectance testing begun in the previous performance period by replacing the experimental receiving optics with the proposed airborne large aperture telescope, which is theoretically capable of capturing many times more signal return. The data gathered from these tests has shown the importance of optimizing the fiber optic receiving fiber to the receiving optic and has helped Ophir to optimize the design of the gas cells and narrowband optical filters. Finally, Ophir will discuss remaining project issues that may impact the success of the project.

Jerry Myers

2004-05-12T23:59:59.000Z

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


281

Avestar® - Simulators  

NLE Websites -- All DOE Office Websites (Extended Search)

Meet Our Partners Simulators IGCC Gasification Combined Cycle NGCC SCOT Oxy-coal Shale Gas 3D Virtual IGCC Training How to Register for Training IGCC Gasification Combined...

282

Simulation tools  

E-Print Network (OSTI)

In the last two decades, simulation tools made a significant contribution to the great progress in development of power electronics. Time to market was shortened and development costs were reduced drastically. Falling costs, as well as improved speed and precision, opened new fields of application. Today, continuous and switched circuits can be mixed. A comfortable number of powerful simulation tools is available. The users have to choose the best suitable for their application. Here a simple rule applies: The best available simulation tool is the tool the user is already used to (provided, it can solve the task). Abilities, speed, user friendliness and other features are continuously being improved—even though they are already powerful and comfortable. This paper aims at giving the reader an insight into the simulation of power electronics. Starting with a short description of the fundamentals of a simulation tool as well as properties of tools, several tools are presented. Starting with simplified models ...

Jenni, F

2006-01-01T23:59:59.000Z

283

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

Shaaf, and the FLUXNET validation communities to choose sites and to identify the land products needed for validation. We also worked with MODAPS on subsetting the Land...

284

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

6,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49 where HDFname - string of fields separated by "periods" (e.g., "MOD13A2.A2000305.fnuswipark01.003.200127522...

285

MODIS Land Products Subsets  

NLE Websites -- All DOE Office Websites (Extended Search)

(Meter) MCD12Q1 LC MODISTerra+Aqua Lan Cover ( LC ) Type Yearly L3 Global 500m SIN Grid annual 500 MCD12Q2 LCD MODISTerra+Aqua Land Cover Dynamics ( LCD ) Yearly L3 Global...

286

Simulation and Risk Assessment Archived Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Archived Projects Archived Projects Advanced Analytical Instrumentation and Facilities for In Situ Reaction Studies NETL 6/2002 Mercury and Air Toxic Element Impacts of Coal Combustion By- Product Disposal and Utilization University of North Dakota Energy and Environmental Research Center 1/23/2003 Risk Assessment for Long-Term Storage of CO 2 in Geologic Formations NETL 3/2005 Geology and Reservoirs Simulation for Brine Field NETL 6/27/2005 Mercury Speciation in Coal-Fired Power Plant Flue Gas - Experimental Studies and Model Development University of Pittsburgh 7/6/2005 Airborne Particulate Threat Assessment ChemImage Biothreat LLC 9/29/2005 Assessments of Environmental Impacts and Beneficial Use of Coalbed Methane Produced Water in the Powder River Basin Western Research Institute 1/1/2006

287

Simulation: Thermodynamic  

E-Print Network (OSTI)

(by selectively reflecting), so system energy stays constant. -- Heat is generated by viscous action corresponds to vortex generation in similar fluid mechanical situations. But the high flow speed#12; ' & $ % Coupling Continuum to Molecular Dynamics Simulation: Reflecting Particle Method

Li, Ju

288

A Global Climatology of Single-Layer and Overlapped Clouds and their Optical Properties Developed Using a New Algorithm Applied to Terra/MODIS Data  

NLE Websites -- All DOE Office Websites (Extended Search)

Global Climatology of Single-Layer and Overlapped Global Climatology of Single-Layer and Overlapped Clouds and their Optical Properties Developed Using a New Algorithm Applied to Terra/MODIS Data F.-L. Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction To date, weather satellites are the only tool to measure cloud and climate variables on a global scale, an objective addressed by the International Satellite Cloud Climatology Project (ISCCP) (Rossow and Schiffer 1991; Rossow and Schiffer 1999). However, there is a dearth of information concerning the global climatology of cloud vertical structure and cirrus cloud properties. This is because the often-used

289

AIRBORNE, OPTICAL REMOTE SENSING OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION  

Science Conference Proceedings (OSTI)

Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. This six-month technical report summarizes the progress for each of the proposed tasks, discusses project concerns, and outlines near-term goals. Ophir has completed a data survey of two major natural gas pipeline companies on the design requirements for an airborne, optical remote sensor. The results of this survey are disclosed in this report. A substantial amount of time was spent on modeling the expected optical signal at the receiver at different absorption wavelengths, and determining the impact of noise sources such as solar background, signal shot noise, and electronic noise on methane and ethane gas detection. Based upon the signal to noise modeling and industry input, Ophir finalized the design requirements for the airborne sensor, and released the critical sensor light source design requirements to qualified vendors. Responses from the vendors indicated that the light source was not commercially available, and will require a research and development effort to produce. Three vendors have responded positively with proposed design solutions. Ophir has decided to conduct short path optical laboratory experiments to verify the existence of methane and absorption at the specified wavelength, prior to proceeding with the light source selection. Techniques to eliminate common mode noise were also evaluated during the laboratory tests. Finally, Ophir has included a summary of the potential concerns for project success and has established future goals.

Jerry Myers

2003-05-13T23:59:59.000Z

290

INTERPRETATION OF AIRBORNE ELECTROMAGNETIC AND MAGNETIC DATA IN THE 600 AREA  

SciTech Connect

As part of the 200-PO-1 Phase I geophysical surveys, Fugro Airborne Surveys was contracted to collect airborne electromagnetic (EM) and magnetic surveys of the Hanford Site 600 Area. Two helicopter survey systems were used with the HeliGEOTEM{reg_sign} time domain portion flown between June 19th and June 20th, 2008, and the RESOLVE{reg_sign} frequency domain portion was flown from June 29th to July 1st, 2008. Magnetic data were acquired contemporaneously with the electromagnetic surveys using a total-field cesium vapor magnetometer. Approximately 925 line kilometers (km) were flown using the HeliGEOTEM{reg_sign} II system and 412 line kilometers were flown using the RESOLVE{reg_sign} system. The HeliGEOTEM system has an effective penetration of roughly 250 meters into the ground and the RESOLVE system has an effective penetration of roughly 60 meters. Acquisition parameters and preliminary results are provided in SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site. Airborne data are interpreted in this report in an attempt to identify areas of likely preferential groundwater flow within the aquifer system based on the presence of paleochannels or fault zones. The premise for the interpretation is that coarser-grained intervals have filled in scour channels created by episodic catastrophic flood events during the late Pleistocene. The interpretation strategy used the magnetic field anomaly data and existing bedrock maps to identify likely fault or lineament zones. Combined analysis of the magnetic, 60-Hz noise monitor, and flight-altitude (radar) data were used to identify zones where EM response is more likely due to cultural interference and or bedrock structures. Cross-sectional and map view presentations of the EM data were used to identify more electrically resistive zones that likely correlate with coarser-grained intervals. The resulting interpretation identifies one major northwest-southeast trending preferential flowpath with several minor units running along a similar trend. This presumed path of preferential flow is compared with the tritium concentration levels observed for the 600 Area. Analysis of the magnetic field data shows the location of potential bedrock faults and lineaments which may influence the horizontal and vertical flow of water. Faults lying within, or in the vicinity of preferential groundwater flow paths may allow flow into or out of the otherwise confined basalt layers.

CUMMINS GD

2010-11-11T23:59:59.000Z

291

ALLDOS: a computer program for calculation of radiation doses from airborne and waterborne releases  

Science Conference Proceedings (OSTI)

The computer code ALLDOS is described and instructions for its use are presented. ALLDOS generates tables of radiation doses to the maximum individual and the population in the region of the release site. Acute or chronic release of radionuclides may be considered to airborne and waterborne pathways. The code relies heavily on data files of dose conversion factors and environmental transport factors for generating the radiation doses. A source inventory data library may also be used to generate the release terms for each pathway. Codes available for preparation of the dose conversion factors are described and a complete sample problem is provided describing preparation of data files and execution of ALLDOS.

Strenge, D.L.; Napier, B.A.; Peloquin, R.A.; Zimmerman, M.G.

1980-10-01T23:59:59.000Z

292

A Systems Level Characterization and Tradespace Evaluation of a Simulated Airborne Fourier Transform Infrared Spectrometer for Gas Detection  

E-Print Network (OSTI)

of operation; and (d) flexibility to fuel changes. In a dry sorbent injection system, trona or sodium In a dry sorbent injection system, trona (Na2CO3·NaHCO3· 2H2O) or sodium bicarbonate (NaHCO3) is injected electrostatic precipitators or fabric filters. Figure 1: Raw Trona under Microscope The chemical reactions

Salvaggio, Carl

293

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 1, Analysis of experimental data  

Science Conference Proceedings (OSTI)

This handbook contains (1) a systematic compilation of airborne release and respirable fraction experimental data for nonreactor nuclear facilities, (2) assessments of the data, and (3) values derived from assessing the data that may be used in safety analyses when the data are applicable. To assist in consistent and effective use of this information, the handbook provides: identification of a consequence determination methodology in which the information can be used; discussion of the applicability of the information and its general technical limits; identification of specific accident phenomena of interest for which the information is applicable; and examples of use of the consequence determination methodology and airborne release and respirable fraction information.

Not Available

1994-12-01T23:59:59.000Z

294

Emergency Response Equipment and Related Training: Airborne Radiological Computer System (Model II)  

Science Conference Proceedings (OSTI)

The materials included in the Airborne Radiological Computer System, Model-II (ARCS-II) were assembled with several considerations in mind. First, the system was designed to measure and record the airborne gamma radiation levels and the corresponding latitude and longitude coordinates, and to provide a first overview look of the extent and severity of an accident's impact. Second, the portable system had to be light enough and durable enough that it could be mounted in an aircraft, ground vehicle, or watercraft. Third, the system must control the collection and storage of the data, as well as provide a real-time display of the data collection results to the operator. The notebook computer and color graphics printer components of the system would only be used for analyzing and plotting the data. In essence, the provided equipment is composed of an acquisition system and an analysis system. The data can be transferred from the acquisition system to the analysis system at the end of the data collection or at some other agreeable time.

David P. Colton

2007-02-28T23:59:59.000Z

295

Airborne-temperature-survey maps of heat-flow anomalies for exploration geology  

DOE Green Energy (OSTI)

Precise airborne temperature surveys depicted small predawn surface temperature differences related to heat flow anomalies at the Long Valley, California, KGRA. Zones with conductive heat flow differences of 45 +- 16 ..mu..cal/cm/sup 2/(s) has predawn surface temperature differences of 1.4 +- 0.3/sup 0/C. The warmer zones had hot water circulating in a shallow (less than 60-m-deep) aquifer. Hot water is a useful geochemical indicator of geothermal and mineral resource potential. The precise airborne temperature survey method recorded redundant infrared scanner signals at two wavelengths (10 to 12 ..mu..m and 4.5 to 5.5 ..mu..m) and two elevations (0.3 km and 1.2 km). Ground thermistor probes recorded air and soil temperatures during the survey overflights. Radiometric temperatures were corrected for air-path and reflected-sky-radiation effects. Corrected temperatures were displayed in image form with color-coded maps which depicted 0.24/sup 0/C temperature differences. After accounting for surficial features on the corrected predawn thermal imagery, there remained several anomalous zones. These zones had high temperature gradients at depths from 6 to 30 m, compared to the temperature gradients in nearby areas.

Del Grande, N.K.

1982-11-10T23:59:59.000Z

296

AUTOMATIC DETECTION OF GRAVEL BARS IN A RIVER CHANNEL FROM AIRBORNE LIDAR-DERIVED DTM  

E-Print Network (OSTI)

Airborne Laser Scanning or LiDAR data are widely used nowadays in river valleys for topography and hydro-morphology. However, the large data sets of unprocessed 3D point clouds require some challenging treatment and end-users may prefer to deal with DTMs (Digital Terrain Models) derived from LiDAR surveys. Without any complementary data (such as field survey or photographs) detecting position and shape of gravel bars in a river is a demanding task, especially if done manually. This paper presents a method for automatic segmentation of a river channel into distinct hydro- morphological entities: water, gravel bars, banks,... This method is based on image processing algorithms (region growing segmentation combined with morphological closing and altitude thresholding) in order to separate water from other elements present in the channel, based on the altitude information. This method is applied to a reach of the Arcen-Maurienne River, France, with alternate gravel bars. The only data source is the 0.25 m resolution DTM, derived from an airborne LiDAR survey. Results show that the developed method succeeds in automatically delimiting the main channel and in detecting gravel bars. It is then possible to get global information on the gravel bars such as location along the river or emerged surface area and topography.

Lionel Pénard; Maxime Morel

2013-01-01T23:59:59.000Z

297

Multisensor Fusion of Ground-based and Airborne Remote Sensing Data for Crop Condition Assessment  

E-Print Network (OSTI)

In this study, the performances of the optical sensors and instruments carried on both ground-based and airborne platforms were evaluated for monitoring crop growing status, detecting the vegetation response to aerial applied herbicides, and identifying crop nitrogen status. Geostatistical analysis on remotely sensed data was conducted to investigate spatial structure of crop canopy normalized difference vegetation index and multispectral imagery. A computerized crop monitoring system was developed that combined sensors and instruments that measured crop structure and spectral data with a global positioning system. The integrated crop monitoring system was able to collect real-time, multi-source, multi-form, and crop related data simultaneously as the tractor-mounted system moved through the field. This study firstly used remotely sensed data to evaluate glyphosate efficacy on weeds applied with conventional and emerging aerial spray nozzles. A weedy field was In this study, the performances of the optical sensors and instruments carried on both ground-based and airborne platforms were evaluated for monitoring crop growing status, detecting the vegetation response to aerial applied herbicides, and identifying crop nitrogen status. Geostatistical analysis on remotely sensed data was conducted to investigate spatial structure of crop canopy normalized difference vegetation index and multispectral imagery. A computerized crop monitoring system was developed that combined sensors and instruments that measured crop structure and spectral data with a global positioning system. The integrated crop monitoring system was able to collect real-time, multi-source, multi-form, and crop related data simultaneously as the tractor-mounted system moved through the field. This study firstly used remotely sensed data to evaluate glyphosate efficacy on weeds applied with conventional and emerging aerial spray nozzles. A weedy field was set up in three blocks and four aerial spray technology treatments were tested. Spectral reflectance measurements were taken using ground-based sensors from all the plots at 1, 8, and 17 days after treatment. The results indicated that the differences among the treatments could be detected with spectral data. This study could provide applicators with guidance equipment configurations that can result in herbicide savings and optimized applications in other crops. The main focus of this research was to apply sensor fusion technology to ground-based and airborne imagery data. Experimental plots cropped with cotton and soybean plants were set up with different nitrogen application rates. The multispectral imagery was acquired by an airborne imaging system over crop field; at the same period, leaf chlorophyll content and spectral reflectance measurements were gathered with chlorophyll meter and spectroradiometer at canopy level on the ground, respectively. Statistical analyses were applied on the data from individual sensor for discrimination with respect to the nitrogen treatment levels. Multisensor data fusion was performed at data level. The results showed that the data fusion of airborne imagery with ground-based data were capable of improving the performance of remote sensing data on detection of crop nitrogen status. The method may be extended to other types of data, and data fusion can be performed at feature or decision level.

Zhang, Huihui

2010-12-01T23:59:59.000Z

298

Extraction of non-forest trees for biomass assessment based on airborne and terrestrial LiDAR data  

Science Conference Proceedings (OSTI)

The main goal of the federal funded project 'LiDAR based biomass assessment' is the nationwide investigation of the biomass potential coming from wood cuttings of non-forest trees. In this context, first and last pulse airborne laserscanning (F+L) data ... Keywords: LiDAR, correlation, point cloud, segmentation, three-dimensional, vegetation

Matthias Rentsch; Alfons Krismann; Peter Krzystek

2011-10-01T23:59:59.000Z

299

High-Resolution Atmospheric Sensing of Multiple Atmospheric Variables Using the DataHawk Small Airborne Measurement System  

Science Conference Proceedings (OSTI)

The DataHawk small airborne measurement system provides in-situ atmospheric measurement capabilities for documenting scales as small as 1 m and can access reasonably large volumes in and above the atmospheric boundary layer at low cost. The design ...

Dale A. Lawrence; Ben B. Balsley

300

Comparison of Water Vapor Measurements by Airborne Sun Photometer and Diode Laser Hygrometer on the NASA DC-8  

Science Conference Proceedings (OSTI)

In January–February 2003, the 14-channel NASA Ames airborne tracking sun photometer (AATS) and the NASA Langley/Ames diode laser hygrometer (DLH) were flown on the NASA DC-8 aircraft. The AATS measured column water vapor on the aircraft-to-sun ...

J. M. Livingston; B. Schmid; P. B. Russell; J. R. Podolske; J. Redemann; G. S. Diskin

2008-10-01T23:59:59.000Z

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


301

The effect of flight line spacing on radioactivity inventory and spatial feature characteristics of airborne gamma-ray spectrometry data  

Science Conference Proceedings (OSTI)

Airborne Gamma Spectrometry (AGS) is well suited to the mapping of radioactivity in the environment. Flight parameters (e.g. speed and line spacing) directly affect the rate of area coverage, cost, and data quality of any survey. The influences of line ...

D. C. W. Sanderson; A. J. Cresswell; D. C. White

2008-01-01T23:59:59.000Z

302

Horizontal Convective Rolls in Cold Air over Water: Buoyancy Characteristics of Coherent Plumes Detected by an Airborne Radar  

Science Conference Proceedings (OSTI)

Aircraft and airborne cloud radar data are used to describe the vertical structure of the convective boundary layer (CBL) during cold-air outbreaks over Lake Michigan in January 2004. Two days with mesoscale cloud street structure and a day with ...

Qiong Yang; Bart Geerts

2006-09-01T23:59:59.000Z

303

Estimating forest structural characteristics with airborne lidar scanning and a near-real time profiling laser systems  

E-Print Network (OSTI)

LiDAR (Light Detection and Ranging) directly measures canopy vertical structures, and provides an effective remote sensing solution to accurate and spatiallyexplicit mapping of forest characteristics, such as canopy height and Leaf Area Index. However, many factors, such as large data volume and high costs for data acquisition, precludes the operational and practical use of most currently available LiDARs for frequent and large-scale mapping. At the same time, a growing need is arising for realtime remote sensing platforms, e.g., to provide timely information for urgent applications. This study aims to develop an airborne profiling LiDAR system, featured with on-the-fly data processing, for near real- or real- time forest inventory. The development of such a system involves implementing the on-board data processing and analysis as well as building useful regression-based models to relate LiDAR measurements with forest biophysical parameters. This work established a paradigm for an on-the-fly airborne profiling LiDAR system to inventory regional forest resources in real- or near real- time. The system was developed based on an existing portable airborne laser system (PALS) that has been previously assembled at NASA by Dr. Ross Nelson. Key issues in automating PALS as an on-the-fly system were addressed, including the design of an archetype for the system workflow, the development of efficient and robust algorithms for automatic data processing and analysis, the development of effective regression models to predict forest biophysical parameters from LiDAR measurements, and the implementation of an integrated software package to incorporate all the above development. This work exploited the untouched potential of airborne laser profilers for realtime forest inventory, and therefore, documented an initial step toward developing airborne-laser-based, on-the-fly, real-time, forest inventory systems. Results from this work demonstrated the utility and effectiveness of airborne scanning or profiling laser systems for remotely measuring various forest structural attributes at a range of scales, i.e., from individual tree, plot, stand and up to regional levels. The system not only provides a regional assessment tool, one that can be used to repeatedly, remotely measure hundreds or thousands of square kilometers with little/no analyst interaction or interpretation, but also serves as a paradigm for future efforts in building more advanced airborne laser systems such as real-time laser scanners.

Zhao, Kaiguang

2008-08-01T23:59:59.000Z

304

Detailed Numerical Simulation of the Graniteville Train Collision  

SciTech Connect

An unfortunate accident occurred in Graniteville, South Carolina on 6 January, 2005 when a train carrying a variety of hazardous chemicals collided with a stationary train parked on a siding rail (spur). The Savannah River National Laboratory (SRNL) runs prognostic atmospheric simulations of the Central Savannah River Area (CSRA) on an operational basis in the event of such airborne releases. Although forecast information was provided at 2-km horizontal grid spacing during the accident response, a higher-resolution simulation was later performed to examine influences of local topography on plume migration. The Regional Atmospheric Modeling System (RAMS, version 4.3.0) was used to simulate meteorology using multiple grids with an innermost grid spacing of 125 meters. This report discusses comparisons of simulated meteorology with local observations and applications using two separate transport models. Results from the simulations are shown to generally agree with meteorological observations at the time. Use of a dense gas model to simulate localized effects indicates agreement with fatalities in the immediate area and visible damage to vegetation.

Buckley, R. L.

2005-10-24T23:59:59.000Z

305

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94

306

Quality Assurance Project Plan for radioactive airborne emissions data compilation and reporting  

Science Conference Proceedings (OSTI)

This Quality Assurance Project Plan addresses the quality assurance requirements for compiling data from radioactie aiborne emissions. These data will be reported to the US Environmental Protection Agency, the US Department of Energy, and the Washington State Department of Health. Hanford Site radioactive airborne emissions are reported to the US Environmental Protection Agency in compliance with Title 40, Protection of the Environment, Code of Federal Regulations, Part 61, ``National Emissions Standards for Hazardous Air Pollutants , ``Subpart H, ``National Emissions Standards for Emissions of Radionuclides Other Than Radon From Department of Energy Facilities`` (EPA 1989a). Reporting to US Department of Energy is performed in compliance with requirements of US Department of Energy Order 5400.1, General Environmental Protection Program (DOE 1988a).

Burris, S.A.; Thomas, S.P.

1994-02-01T23:59:59.000Z

307

Development of an airborne visibility meter. Final report 20 Feb 1981-30 Sep 1982  

SciTech Connect

A light-weight, compact nephelometer for the detection of cloud presence and the estimation of visual range was designed, fabricated, and tested. The device is intended for airborne deployment for use in a tactical weather observation system and in support of precision guided munition missions. The sensor is a fixed angle nephelometer utilizing an infrared diode at 0.88 micrometers and a silicon photovoltaic detector. The sensor was calibrated in an environmental fog chamber over a wide range of fog and haze conditions. The sensor was found to have a very wide dynamic range of sensitivity (over the decades of attenuation coefficient) and, within operational requirements for accuracy, its performance can be described by a universal algorithm. The nephelometer was field tested at AFGL's Weather Test Facility at Otis AFB; high correlations were observed with transmissometers and other forward-scatter meters.

Hansen, D.F.

1982-11-15T23:59:59.000Z

308

Chronic disease and early exposure to air-borne mixtures: 1. The environmental quality database  

SciTech Connect

This is the first in a continuing study examining the impact of early exposure to air-borne mixtures of chemicals from industrial sources on the etiology of cancer. The Environmental Quality Database (EQDB) contains lifetime residential histories for about 20,000 cases in 18 rare or poorly understood sites and about 5000 controls. The EQDB contains all known industrial point sources in about 50 U.S.-SIC code operating in Canada, all geolocated, from 1993 to about 1950. Cases and controls were collected in 1993-1995. Both source-centric and case-centric searching is possible. It is possible to search all instances of a source-type or only one. Three features of the design are the management of mobility and latency as epidemiological confounders and a considerable simplification of Retrospective Exposure Assessment by using the RASH relative potency methodology. 42 refs., 2 figs., 3 tabs.

James Argo [IntrAmericas Centre for Environment and Health, Wolfe Island, ON (Canada)

2007-10-15T23:59:59.000Z

309

Airborne and field-temperature surveys compared at Long Valley KGRA, California  

DOE Green Energy (OSTI)

An airborne predawn radiometric temperature survey was flown over the Long Valley KGRA. Radiometric temperatures were recorded at 10 to 12 ..mu..m and 4.5 to 5.5 ..mu..m. They were corrected to obtain true land-surface temperatures in agreement with field data. After accounting for thermal effects from surface features, there remained a thermal anomaly. The anomalous zone encompassed 2 km/sup 2/. It was a dry land area with a predawn surface temperature which averaged 1.4 +- 0.3/sup 0/C warmer than ambient. This area coincided with a thermal discharge zone where deep temperature gradients were 5 to 30 times normal. The predawn radiometric survey clarified and supplemented conclusions drawn from 6 to 30m deep field surveys. Heat from hydrothermal discharge was stored in a shallow aquifer and conducted to the surface.

Del Grande, N.K.

1981-06-01T23:59:59.000Z

310

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650.

311

THE 2011 JUNE 23 STELLAR OCCULTATION BY PLUTO: AIRBORNE AND GROUND OBSERVATIONS  

SciTech Connect

On 2011 June 23, stellar occultations by both Pluto (this work) and Charon (future analysis) were observed from numerous ground stations as well as the Stratospheric Observatory for Infrared Astronomy (SOFIA). This first airborne occultation observation since 1995 with the Kuiper Airborne Observatory resulted in the best occultation chords recorded for the event, in three visible wavelength bands. The data obtained from SOFIA are combined with chords obtained from the ground at the IRTF, the U.S. Naval Observatory Flagstaff Station, and Leeward Community College to give the detailed state of the Pluto-Charon system at the time of the event with a focus on Pluto's atmosphere. The data show a return to the distinct upper and lower atmospheric regions with a knee or kink in the light curve separating them as was observed in 1988, rather than the smoothly transitioning bowl-shaped light curves of recent years. The upper atmosphere is analyzed by fitting a model to all of the light curves, resulting in a half-light radius of 1288 {+-} 1 km. The lower atmosphere is analyzed using two different methods to provide results under the differing assumptions of particulate haze and a strong thermal gradient as causes for the lower atmospheric diminution of flux. These results are compared with those from past occultations to provide a picture of Pluto's evolving atmosphere. Regardless of which lower atmospheric structure is assumed, results indicate that this part of the atmosphere evolves on short timescales with results changing the light curve structures between 1988 and 2006, and then reverting these changes in 2011 though at significantly higher pressures. Throughout these changes, the upper atmosphere remains remarkably stable in structure, again except for the overall pressure changes. No evidence of onset of atmospheric collapse predicted by frost migration models is seen, and the atmosphere appears to be remaining at a stable pressure level, suggesting it should persist at this full level through New Horizon's flyby in 2015.

Person, M. J.; Bosh, A. S.; Levine, S. E.; Gulbis, A. A. S.; Zangari, A. M.; Zuluaga, C. A.; Sallum, S. [Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139-4307 (United States); Dunham, E. W.; Collins, P.; Bida, T.; Bright, L. [Lowell Observatory, Flagstaff, AZ (United States); Pasachoff, J. M.; Babcock, B. A.; Pandey, S.; Amrhein, D. [Williams College-Hopkins Observatory, Williamstown, MA (United States); Tholen, D. J. [Institute for Astronomy, University of Hawaii, Manoa, HI (United States); Taylor, B. [Boston University, Boston, MA (United States); Wolf, J.; Pfueller, E. [Deutsches SOFIA Institut, Universitaet Stuttgart, Pfaffenwaldring 29, D-70569 Stuttgart (Germany); Meyer, A., E-mail: mjperson@mit.edu [SOFIA Science Center, NASA Ames Research Center, MS 211-1, Moffett Field, CA 94035 (United States); and others

2013-10-01T23:59:59.000Z

312

Digestion Simulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Digestion Simulations Digestion Simulations Name: Lisa Location: N/A Country: N/A Date: N/A Question: My 5th grade students are beginning an experiment next week and their hypothesis involves edibility(edibleness?). Is there a way to replicate the stomach in, say, a bottle?? Are there ways to test for edibleness(?) without actually ingesting the experiment yourself? Replies: I would not recommend the idea of a bottle stomach. The stomach digests only proteins anyway with HCl [pH 1.0] which is very, very strong acid that will burn seriously if in contact with skin. The intestine is just as much responsible for digestion of lipids [bile], carbohydrates and remaining proteins using enzymes, many of these you do not want to be handling, let alone purchase. As a high school teacher, I have lab exercises dealing with digestion, but I can not recommend any of these unless you are set up with a functional science laboratory and all the safety equipment necessary.

313

Analysis of the planetary boundary layer with a database of large-eddy simulation experiments  

E-Print Network (OSTI)

Observational studies of a planetary boundary layer (PBL) are difficult. Ground-born measurements usually characterize only a small portion of the PBL immediately above the surface. Air-born measurements cannot be obtained close to the surface and therefore cannot capture any significant portion of the PBL interior. Moreover, observations are limited in choice of instrumentation, time, duration, location of measurements and occasional weather conditions. Although turbulence-resolving simulations with a large-eddy simulation (LES) code do not supplant observational studies, they provide valuable complementary information on different aspect of the PBL dynamics, which otherwise difficult to acquire. These circumstances motivated development of a medium-resolution database (DATABASE64) of turbulence-resolving simulations, which is available on ftp://ftp.nersc.no/igor/. DATABASE64 covers a range of physical parameters typical for the barotropic SBL over a homogeneous rough surface. LES runs in DATABASE64 simulate...

Esau, Igor

2010-01-01T23:59:59.000Z

314

Airborne Characterization of the Chemical, Optical, and Meteorological Properties, and Origins of a Combined Ozone-Haze Episode over the Eastern United States  

Science Conference Proceedings (OSTI)

Airborne observations of trace gases, particle size distributions, and particle optical properties were made during a constant altitude transect from New Hampshire to Maryland on 14 August 2002, the final day of a multiday haze and ozone (O3) ...

Brett F. Taubman; Lackson T. Marufu; Charles A. Piety; Bruce G. Doddridge; Jeffrey W. Stehr; Russell R. Dickerson

2004-07-01T23:59:59.000Z

315

Three-Dimensional Air Circulation in a Squall Line from Airborne Dual-Beam Doppler Radar Data: A Test of Coplane Methodology Software  

Science Conference Proceedings (OSTI)

The detailed structure of a tropical squall line observed in central Florida was investigated from an airborne dual-beam Doppler radar, pointing respectively fore and aft. This allowed dual-Doppler observations from a straight flight path in a ...

Michel Chong; Jacques Testud

1996-02-01T23:59:59.000Z

316

Measurement of airborne fission products in Chapel Hill, NC, USA from the Fukushima Dai-ichi reactor accident  

E-Print Network (OSTI)

We present measurements of airborne fission products in Chapel Hill, NC, USA, from 62 days following the March 11, 2011, accident at the Fukushima Dai-ichi nuclear power plant. Airborne particle samples were collected daily in air filters and radio-assayed with two high-purity germanium (HPGe) detectors. The fission products I-131 and Cs-137 were measured with maximum activities of 4.2 +/- 0.6 mBq/m^3 and 0.42 +/- 0.07 mBq/m^3 respectively. Additional activity from I-131, I-132, Cs-134, Cs-136, Cs-137 and Te-132 were measured in the same air filters using a low-background HPGe detector at the Kimballton Underground Research Facility (KURF).

S. MacMullin; G. K. Giovanetti; M. P. Green; R. Henning; R. Holmes; K. Vorren; J. F. Wilkerson

2011-11-17T23:59:59.000Z

317

Measurement of Airborne Fission Products in Chapel Hill, NC, USA from the Kukushima Dai-ichi Reactor Accident  

SciTech Connect

We present measurement results of airborne fission products in Chapel Hill, NC, USA, from 62 d following the March 11, 2011, accident at the Fukushima Dai-ichi nuclear power plant. Airborne particle samples were collected daily in air filters and radio-assayed with two high-purity germanium (HPGe) detectors. The fission products 131I and 137Cs were measured with maximum activity concentrations of 4.2 0.6 mBq/m3 and 0.42 0.07 mBq/m3 respectively. Additional activity from 131,132I, 134,136,137Cs and 132Te were measured in the same air filters using a low-background HPGe detector at the Kimballton Underground Research Facility (KURF).

MacMullin, S. [Univ, of North Carolina & Triangle Universities Nucl. Lab - Durham, NC; Giovanetti, G. K. [Univ, of North Carolina & Triangle Universities Nucl. Lab - Durham, NC; Green, M. P. [Univ, of North Carolina & Triangle Universities Nucl. Lab - Durham, NC; Henning, R. [Univ, of North Carolina & Triangle Universities Nucl. Lab - Durham, NC; Holmes, R. [Univ. North Carolina-Chapel & Univ. of Illinois-Urbana; Vorren, K. [University of North Carolina / Triangle Universities Nuclear Lababoratory, Durham; Wilkerson, J. F. [UNC/Triangle Univ. Nucl. Lab, Durham, NC/ORNL

2012-01-01T23:59:59.000Z

318

Direct Characterization of Airborne Particles Associated with Arsenic-rich Mine Tailings: Particle Size Mineralogy and Texture  

SciTech Connect

Windblown and vehicle-raised dust from unvegetated mine tailings can be a human health risk. Airborne particles from As-rich abandoned Au mine tailings from Nova Scotia, Canada have been characterized in terms of particle size, As concentration, As oxidation state, mineral species and texture. Samples were collected in seven aerodynamically fractionated size ranges (0.5-16 {micro}m) using a cascade impactor deployed at three tailings fields. All three sites are used for recreational activities and off-road vehicles were racing on the tailings at two mines during sample collection. Total concentrations of As in the <8 {micro}m fraction varied from 65 to 1040 ng/m{sup 3} of air as measured by proton-induced X-ray emission (PIXE) analysis. The same samples were analysed by synchrotron-based microfocused X-ray absorption near-edge spectroscopy ({micro}XANES) and X-ray diffraction ({micro}XRD) and found to contain multiple As-bearing mineral species, including Fe-As weathering products. The As species present in the dust were similar to those observed in the near-surface tailings. The action of vehicles on the tailings surface may disaggregate material cemented with Fe arsenate and contribute additional fine-grained As-rich particles to airborne dust. Results from this study can be used to help assess the potential human health risks associated with exposure to airborne particles from mine tailings.

M Corriveau; H Jamieson; M Parsons; J Campbell; A Lanzirotti

2011-12-31T23:59:59.000Z

319

Airborne gamma-ray spectrometer and magnetometer survey, New Rockford Quadrangle, North Dakota. Final report  

Science Conference Proceedings (OSTI)

An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over eleven (11) 2/sup 0/ x 1/sup 0/ NTMS quadrangles located in the states of Minnesota and Wisconsin and seven (7) 2/sup 0/ x 1/sup 0/ NTMS quadrangles in North and South Dakota. The quadrangles located within the North and South Dakota survey area include Devil's Lake, New Rockford, Jamestown, Aberdeen, Huron, Mitchell, and Sioux Falls. This report discusses the results obtained over the New Rockford map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately twenty-four (24) miles apart. A total of 21,481 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1397 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

Not Available

1981-04-01T23:59:59.000Z

320

Airborne gamma-ray spectrometer and magnetometer survey, Mitchell Quadrangle, South Dakota. Final report  

SciTech Connect

An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over eleven (11) 2/sup 0/ x 1/sup 0/ NTMS quadrangles located in the states of Minnesota and Wisconsin and seven (7) 2/sup 0/ x 1/sup 0/ NTMS quadrangles in North and South Dakota. The quadrangles located within the North and South Dakota survey area include Devil's Lake, New Rockford, Jamestown, Aberdeen, Huron, Mitchell, and Sioux Falls. This report discusses the results obtained over the Mitchell map area. The purpose of this program is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately twenty-four (24) miles apart. A total of 21,481 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1479 line miles are in this quadrangle.

Not Available

1981-04-01T23:59:59.000Z

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


321

Airborne gamma-ray spectrometer and magnetometer survey: Huron quadrangle, South Dakota. Final report  

Science Conference Proceedings (OSTI)

An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over eleven (11) 2/sup 0/ x 1/sup 0/ NTMS quadrangles located in the states of Minnesota and Wisconsin and seven (7) 2/sup 0/ x 1/sup 0/ NTMS quadrangles in North and South Dakota. The quadrangles located within the North and South Dakota survey area include Devil's Lake, New Rockford, Jamestown, Aberdeen, Huron, Mitchell, and Sioux Falls. This report discusses the results obtained over the Huron map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately twenty-four (24) miles apart. A total of 21,481 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1459 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

Not Available

1981-04-01T23:59:59.000Z

322

Airborne gamma-ray spectrometer and magnetometer survey Coos Bay, Oregon. Final report  

Science Conference Proceedings (OSTI)

During the months of August, September, and October of 1980, Aero Service Division Western Geophysical Company of America conducted an airborne high sensitivity gamma-ray spectrometer and magnetometer survey over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Coos Bay, Oregon, map area. Line spacing was generally six miles for east/west traverses and eighteen miles for north/south tie lines over the northern one-half of the area. Traverses and tie lines were flown at three miles and twelve miles respectively over the southern one-half of the area. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 863.8 line miles are in this quadrangle.

Not Available

1981-05-01T23:59:59.000Z

323

Airborne gamma-ray spectrometer and magnetometer survey, Medford Quadrangle Oregon. Final report  

Science Conference Proceedings (OSTI)

An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Medford, Oregon, map area. Traverse lines were flown in an east-west direction at a line spacing of three miles. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 2925 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

Not Available

1981-04-01T23:59:59.000Z

324

New Chemical Aerosol Characterization Methods- Examples Using Agricultural and Urban Airborne Particulate Matter  

E-Print Network (OSTI)

This study explored different chemical characterization methods of agricultural and urban airborne particulate matter. Three different field campaigns are discussed. For the agricultural aerosols, measurement of the chemical composition of size-resolved agricultural aerosols collected from a ground site at the nominally downwind and upwind edge of a feedlot in West Texas were reported. High volume cascade impactor samplers were used for the collection of the particles, and two major analytical methods were applied to characterize different components of the aerosols, ion chromatography (IC ) was used to measure ionic composition with the main targets being ammonium (NH4 ), nitrate (NO3 -), and sulfate (SO4 2-), direct thermal desorption gas chromatography-mass spectrometry/flame ionization detection (GC-MS/FID) methodology was used to identify and quantify organic compounds in the aerosol particles. For the urban aerosols, I report the measurement of mass, and the chemical composition of size-resolved aerosols collected from two different locations in Houston, analyzed by the thermal desorption GC-MS/FID method. The investigation of single particle composition using RM is reported as well: RM and chemical mapping techniques have been applied for the qualitative analysis of components in the samples of air particulate matter collected in downtown Houston.

Zhou, Lijun

2010-08-01T23:59:59.000Z

325

Wide-area, Sub-decimetre Positioning for Airborne LiDAR Surveys Using  

E-Print Network (OSTI)

Airborne LiDAR surveys produce high-resolution, very accurate surface elevation models which are used for many applications in surveying and civil engineering, as well as for flood prevention and mitigation, monitoring coastal erosion and land subsidence, etc. The key to producing high quality elevation products is very precise geolocation and orientation (or “georeferencing”) of the LiDAR instrument at the times when the measurements are made, obtained with a combination of on-board GNSS and inertial sensors. The usual practice is to deploy reference GPS/GNSS land receivers in the area where the aircraft will be flying, and to obtain a precise trajectory by means of the short-baseline differential GNSS technique. This could mean installing and operating receivers at many sites during a flight mission if the area surveyed is a large one. In this paper, an example of an alternative approach will be presented: using as reference receivers those of a sparse network of Continuously Operating Reference Stations (CORS) in New South Wales known as CORSnet-NSW, and a wide-area GNSS technique for obtaining the aircraft trajectory with sub-decimetre accuracy even with baseline lengths of several hundred kilometres. This may be comparable in precision and accuracy to the short-baseline

Oscar L. Colombo; Shane Brunker; Glenn Jones; Volker Janssen

2009-01-01T23:59:59.000Z

326

Area-Based Mapping of Defoliation of Scots Pine Stands Using Airborne Scanning LiDAR  

E-Print Network (OSTI)

Abstract: The mapping of changes in the distribution of insect-caused forest damage remains an important forest monitoring application and challenge. Efficient and accurate methods are required for mapping and monitoring changes in insect defoliation to inform forest management and reporting activities. In this research, we develop and evaluate a LiDAR-driven (Light Detection And Ranging) approach for mapping defoliation caused by the Common pine sawfly (Diprion pini L.). Our method requires plot-level training data and airborne scanning LiDAR data. The approach is predicated on a forest canopy mask created by detecting forest canopy cover using LiDAR. The LiDAR returns that are reflected from the canopy (that is, returns> half of maximum plot tree height) are used in the prediction of the defoliation. Predictions of defoliation are made at plot-level, which enables a direct integration of the method to operational forest management planning while also providing additional value-added from inventory-focused LiDAR datasets. In additionRemote Sens. 2013, 5 1221

Mikko Vastaranta; Tuula Kantola; Päivi Lyytikäinen-saarenmaa; Markus Holopainen; Ville Kankare; Michael A. Wulder

2013-01-01T23:59:59.000Z

327

Simulation Technology Laboratory Building 970 hazards assessment document  

SciTech Connect

The Department of Energy Order 5500.3A requires facility-specific hazards assessments be prepared, maintained, and used for emergency planning purposes. This hazards assessment document describes the chemical and radiological hazards associated with the Simulation Technology Laboratory, Building 970. The entire inventory was screened according to the potential airborne impact to onsite and offsite individuals. The air dispersion model, ALOHA, estimated pollutant concentrations downwind from the source of a release, taking into consideration the toxicological and physical characteristics of the release site, the atmospheric conditions, and the circumstances of the release. The greatest distances at which a postulated facility event will produce consequences exceeding the ERPG-2 and Early Severe Health Effects thresholds are 78 and 46 meters, respectively. The highest emergency classification is a Site Area Emergency. The Emergency Planning Zone is 100 meters.

Wood, C.L.; Starr, M.D.

1994-11-01T23:59:59.000Z

328

Simulation of Storm Occurrences Using Simulated Annealing  

Science Conference Proceedings (OSTI)

Modeling storm occurrences has become a vital part of hurricane prediction. In this paper, a method for simulating event occurrences using a simulated annealing algorithm is described. The method is illustrated using annual counts of hurricanes ...

Ravindra S. Lokupitiya; Leon E. Borgman; Richard Anderson-Sprecher

2005-11-01T23:59:59.000Z

329

Winter Simulation Conference  

Science Conference Proceedings (OSTI)

Welcome to the 2009 Winter Simulation Conference (WSC), recognized as the premiere international conference for simulation professionals in discrete and combined discrete-continuous simulation. WSC is always located in exciting and dynamic locations ...

Ann Dunkin; Ricki G. Ingalls

2009-12-01T23:59:59.000Z

330

Analysis of mixing layer heights inferred from radiosonde, wind profiler, airborne lidar, airborne microwave temperature profiler, and in-situ aircraft data during the Texas 2000 air quality study in Houston, TX  

E-Print Network (OSTI)

The mixing layer (ML) heights inferred from radiosondes, wind profilers, airborne lidar, airborne microwave temperature profiler (MTP), and in-situ aircraft data were compared during the Texas 2000 Air Quality Study in the Houston area. The comparisons and resulting good agreement between the separate instruments allowed for the spatial and temporal evolution of the ML height distribution to be determined across the Houston area on September 1, 2000. A benchmark method was created for determining ML heights from radiosonde data. The ML heights determined using this method were compared to ML heights determined using wind profiler data. The airborne lidar and MTP heights were also compared to the wind profiler heights. This was the first time the MTP was used for estimating ML heights. Because of this, the MTP heights were also compared to the ML heights determined by in-situ aircraft data. There was good agreement between the ML estimates when the instruments were co-located. The comparisons between the benchmark method and the wind profilers were independent of the quality of the profiler heights. The statistics for lidar and the wind profilers were better for the inland profiler comparisons. Even so, the results for coastal profilers were similar to the other comparisons. The results between the MTP and the wind profilers were comparable with the results found between the other instruments, and better, in that the statistics were similar for the both the inland and coastal profilers. The results between the MTP and in-situ aircraft data provided additional support for the use of MTP for determining ML heights. The combination of the inland and coastal wind profilers with the airborne instruments provided adequate information for the spatial and temporal evolution of the ML height to be determined across the Houston area on September 1, 2000. By analyzing the ML height distribution, major features were evident. These features included the shallow ML heights associated with the marine air from Galveston Bay and the Gulf of Mexico, and the sharp gradient of increasing ML heights north of Houston associated with the variation in the inversion depth found on this day.

Smith, Christina Lynn

2003-05-01T23:59:59.000Z

331

Fire, Smoke, and Simulations  

Science Conference Proceedings (OSTI)

... NIST Technologies Help Improve Homeland Security. AVI file (Smokeview simulation animation). Initial Model for Fires in ...

2010-10-05T23:59:59.000Z

332

Assessment of Unabated Facility Emission Potentials for Evaluating Airborne Radionuclide Monitoring Requirements at Pacific Northwest National Laboratory - 2001  

Science Conference Proceedings (OSTI)

Assessments were performed to evaluate compliance with the airborne radionuclide emission monitoring requirements in the National Emission Standards for Hazardous Air Pollutants (NESHAP - U.S. Code of Federal Regulations, Title 40 Part 61, Subpart H) and Washington Administrative Code (WAC) 246-247: Radiation Protection - Air Emissions. In these assessments, potential unabated offsite doses were evaluated for emission locations at facilities owned by the U.S. Department of Energy and operated by Pacific Northwest National Laboratory (PNNL) on the Hanford Site. This report describes the inventory-based methods, and provides the results, for the assessment performed in 2001.

Ballinger, Marcel Y.; Sula, Monte J.; Gervais, Todd L.; Shields, Keith D.; Edwards, Daniel R.

2001-09-28T23:59:59.000Z

333

Assessment of Unabated Facility Emission Potentials for Evaluating Airborne Radionuclide Monitoring Requirements at Pacific Northwest National Laboratory - 2010  

SciTech Connect

Assessments were performed to evaluate compliance with the airborne radionuclide emission monitoring requirements in the National Emission Standards for Hazardous Air Pollutants ([NESHAP]; U.S. Code of Federal Regulations, Title 40, Part 61, Subpart H) and Washington Administrative Code 246-247: Radiation Protection - Air Emissions. In these NESHAP assessments, potential unabated off-site doses were evaluated for emission locations at buildings that are part of the consolidated laboratory campus of the Pacific Northwest National Laboratory. This report describes the inventory-based methods and provides the results for the NESHAP assessment performed in 2010.

Ballinger, Marcel Y.; Gervais, Todd L.; Barnett, J. M.

2011-05-13T23:59:59.000Z

334

Assessment of Unabated Facility Emission Potentials for Evaluating Airborne Radionuclide Monitoring Requirements at Pacific Northwest National Laboratory - 2007  

SciTech Connect

Assessments were performed to evaluate compliance with the airborne radionuclide emission monitoring requirements in the National Emission Standards for Hazardous Air Pollutants (NESHAP – U.S. Code of Federal Regulations, Title 40, Part 61, Subpart H) and Washington Administrative Code (WAC) 246-247: Radiation Protection – Air Emissions. In these NESHAP assessments, potential unabated offsite doses were evaluated for emission locations at buildings that are part of the consolidated laboratory campus of the Pacific Northwest National Laboratory. This report describes the inventory-based methods and provides the results for the NESHAP assessment performed in 2007.

Ballinger, Marcel Y.; Barfuss, Brad C.; Gervais, Todd L.

2008-01-01T23:59:59.000Z

335

The ATLAS Simulation Infrastructure  

E-Print Network (OSTI)

The simulation software for the ATLAS Experiment at the Large Hadron Collider is being used for large-scale production of events on the LHC Computing Grid. This simulation requires many components, from the generators that simulate particle collisions, through packages simulating the response of the various detectors and triggers. All of these components come together under the ATLAS simulation infrastructure. In this paper, that infrastructure is discussed, including that supporting the detector description, interfacing the event generation, and combining the GEANT4 simulation of the response of the individual detectors. Also described are the tools allowing the software validation, performance testing, and the validation of the simulated output against known physics processes.

The ATLAS Collaboration

2010-05-25T23:59:59.000Z

336

Dispersion of Airborne-Released Silver Iodide in Winter Orographic Clouds  

Science Conference Proceedings (OSTI)

Two flight plans were used for a seeding aircraft and a measurement aircraft in the study of silver iodide plume dispersion. An instantaneous line source and a continuous point source plume generation were simulated approximately by the seeding ...

Geoffrey E. Hill

1980-08-01T23:59:59.000Z

337

MODIS Land Products Subsets Demo  

NLE Websites -- All DOE Office Websites (Extended Search)

GLOBAL Subsetting and GLOBAL Subsetting and Visualization Tool Webinar: Bringing time-series satellite-based land data to the field scientist National Aeronautics and Space Administration www.nasa.gov Suresh K.S. Vannan and Tammy Walker Beaty Oak Ridge National Laboratory Distributed Active Archive Center, ORNL DAAC July 24 and 25, 2013 National Aeronautics and Space Administration Tammy Walker Beaty 2 About ORNL DAAC * The Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) for biogeochemical dynamics is one of the National Aeronautics and Space Administration (NASA) Earth Observing System Data and Information System (EOSDIS) data centers managed by the Earth Science Data and Information System (ESDIS) Project, which is responsible for providing users with access to data from NASA's Earth Science

338

Comparison of airborne asbestos levels determined by transmission electron microscopy (TEM) using direct- and indirect-transfer techniques. Final report  

SciTech Connect

A subset of air samples from a 1988 EPA study was reanalyzed for asbestos by TEM using an indirect transfer technique. The samples were originally analyzed using a direct transfer technique. The document presents the results of the reanalysis and extends the discussion to include data from six other studies. The development of the two techniques and their respective advantages and disadvantages are described. The data support the general opinion that TEM analysis of air samples using indirect transfer methods tends to provide estimates of total airborne asbestos structure concentration that are higher than those obtained using direct transfer methods. There is no single factor that can be used to convert measurements made by one method to a value that is comparable with measurements made by the other because the quantitative relationship is expected to depend on details of the sampling and analytical protocols and the nature of the asbestos in the air. The ratio of indirect measurements to direct measurements ranges from 3.8 to 1,700 for the studies considered. Additional research is needed to determine which transfer technique more accurately reflects biologically meaningful airborne asbestos concentrations. Breakdown of larger structures into smaller ones during indirect preparation does not appear to be sufficient to explain the difference in measured concentrations.

Chesson, J.; Hatfield, J.

1990-03-01T23:59:59.000Z

339

Radio Channel Simulator  

Radio Channel Simulator (RCSim) is a simulation package for making site-specific predictions of radio signal strength. The software computes received power atdiscrete grid points as a function of the transmitter location and propagation environment. ...

340

Ad Hoc Distributed Simulations  

Science Conference Proceedings (OSTI)

An ad hoc distributed simulation is a collection of autonomous on-line simulations brought together to model an operational system. They offer the potential of increased accuracy, responsiveness, and robustness compared to centralized approaches. They ...

Richard Fujimoto; Michael Hunter; Jason Sirichoke; Mahesh Palekar; Hoe Kim; Wonho Suh

2007-06-01T23:59:59.000Z

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


341

Simulated Chromatographic Data  

Science Conference Proceedings (OSTI)

Simulated Chromatographic Data. Description/Summary: ... Data are provided in individual files that are packaged together in grouped zip files. ...

2012-10-09T23:59:59.000Z

342

Atomistic Simulation and ICME  

Science Conference Proceedings (OSTI)

The annual NIST workshops on "Atomistic Simulations for Industrial Needs" .... First Principles Modeling of Shape Memory Alloy Magnetic Refrigeration Materials.

343

Weld arc simulator  

DOE Patents (OSTI)

An arc voltage simulator for an arc welder permits the welder response to a variation in arc voltage to be standardized. The simulator uses a linear potentiometer connected to the electrode to provide a simulated arc voltage at the electrode that changes as a function of electrode position.

Burr, M.J.

1989-03-01T23:59:59.000Z

344

Validation of IIR/CALIPSO Level 1 Measurements by Comparison with Collocated Airborne Observations during CIRCLE-2 and Biscay ‘08 Campaigns  

Science Conference Proceedings (OSTI)

In the frame of validation of the spatial observations from the radiometer IIR on board CALIPSO, the two airborne campaigns Cirrus Cloud Experiment (CIRCLE)-2 and Biscay ‘08 took place in 2007 and 2008 in the western part of France, over the ...

Odran Sourdeval; Gérard Brogniez; Jacques Pelon; Laurent C.-Labonnote; Philippe Dubuisson; Frédéric Parol; Damien Josset; Anne Garnier; Michaël Faivre; Andreas Minikin

2012-05-01T23:59:59.000Z

345

Identification of Dynamical Processes at the Tropopause during the Decay of a Cutoff Low Using High-Resolution Airborne Lidar Ozone Measurements  

Science Conference Proceedings (OSTI)

In June 1996, an airborne ozone lidar was successfully used to observe the decay of a cutoff low over southern Europe. This weather system was tracked during several days and sampled with an 8-km horizontal resolution. Most of the measurements ...

F. Ravetta; G. Ancellet

2000-09-01T23:59:59.000Z

346

Intercomparison of Water Vapor Data Measured with Lidar during IHOP_2002. Part I: Airborne to Ground-Based Lidar Systems and Comparisons with Chilled-Mirror Hygrometer Radiosondes  

Science Conference Proceedings (OSTI)

The water vapor data measured with airborne and ground-based lidar systems during the International H2O Project (IHOP_2002), which took place in the Southern Great Plains during 13 May–25 June 2002 were investigated. So far, the data collected ...

Andreas Behrendt; Volker Wulfmeyer; Hans-Stefan Bauer; Thorsten Schaberl; Paolo Di Girolamo; Donato Summa; Christoph Kiemle; Gerhard Ehret; David N. Whiteman; Belay B. Demoz; Edward V. Browell; Syed Ismail; Richard Ferrare; Susan Kooi; Junhong Wang

2007-01-01T23:59:59.000Z

347

Tonopah Test Range Air Monitoring: CY2012 Meteorological, Radiological, and Airborne Particulate Observations  

SciTech Connect

In 1963, the Atomic Energy Commission (AEC), predecessor to the US Department of Energy (DOE), implemented Operation Roller Coaster on the Tonopah Test Range (TTR) and an adjacent area of the Nevada Test and Training Range (NTTR) (formerly the Nellis Air Force Range (NAFR)). Operation Roller Coaster consisted of four tests in which chemical explosions were detonated in the presence of nuclear devices to assess the dispersal of radionuclides and evaluate the effectiveness of storage structures to contain the ejected radionuclides. These tests resulted in dispersal of plutonium over the ground surface downwind of the test ground zero. Three tests, Clean Slate 1, 2, and 3, were conducted on the TTR in Cactus Flat; the fourth, Double Tracks, was conducted in Stonewall Flat on the NTTR. DOE is working to clean up and close all four sites. Substantial cleaned up has been accomplished at Double Tracks and Clean Slate 1. Cleanup of Clean Slate 2 and 3 is on the DOE planning horizon for some time in the next several years. The Desert Research Institute installed two monitoring stations, number 400 at the Sandia National Laboratories Range Operations Center and number 401 at Clean Slate 3, in 2008 and a third monitoring station, number 402 at Clean Slate 1, in 2011 to measure radiological, meteorological, and dust conditions. The primary objectives of the data collection and analysis effort are to (1) monitor the concentration of radiological parameters in dust particles suspended in air, (2) determine whether winds are re-distributing radionuclides or contaminated soil material, (3) evaluate the controlling meteorological conditions if wind transport is occurring, and (4) measure ancillary radiological, meteorological, and environmental parameters that might provide insight to the above assessments. The following observations are based on data collected during CY2012. The mean annual concentration of gross alpha and gross beta is highest at Station 400 and lowest at Station 401. This difference may be the result of using filter media at Station 400 with a smaller pore size than the media used at the other two stations. Average annual gamma exposure at Station 401 is slightly greater than at Station 400 and 402. Average annual gamma exposure at all three TTR stations are in the upper range to slightly higher than values reported for the CEMP stations surrounding the TTR. At higher wind speeds, the saltation counts are greater at Station 401 than at Station 402 while the suspended particulate concentrations are greater at Station 402 than at Statin 401. Although these observations seem counterintuitive, they are likely the result of differences in the soil material present at the two sites. Station 401 is located on an interfluve elevated above two adjacent drainage channels where the soil surface is likely to be composed of coarser material. Station 402 is located in finer sediments at the playa edge and is also subject to dust from a dirt road only 500 m to the north. During prolonged high wind events, suspended dust concentrations at Station 401 peaked with the initial winds then decreased whereas dust concentrations at Station 402 peaked with each peak in the wind speed. This likely reflects a limited PM10 source that is quickly expended at Station 401 relative to an abundant PM10 source at Station 402. In CY2013, to facilitate comparisons between radiological analyses of collected dust, the filter media at all three stations will be standardized. In addition, a sequence of samples will be collected at Station 400 using both types of filter media to enable development of a mathematical relationship between the results derived from the two filter types. Additionally, having acquired approximately four years of observations at Stations 400 and 401 and a year of observations at Station 402, a period-of-record analysis of the radiological and airborne dust conditions will be undertaken.

Mizell, Steve A; Nikolich, George; Shadel, Craig; McCurdy, Greg; Miller, Julianne J

2013-07-01T23:59:59.000Z

348

Air Shower Simulations  

SciTech Connect

Air shower simulations are a vital part of the design of air shower experiments and the analysis of their data. We describe the basic features of air showers and explain why numerical simulations are the appropriate approach to model the shower simulation. The CORSIKA program, the standard simulation program in this field, is introduced and its features, performance and limitations are discussed. The basic principles of hadronic interaction models and some gerneral simulation techniques are explained. Also a brief introduction to the installation and use of CORSIKA is given.

Alania, Marco; Gomez, Adolfo V. Chamorro [Centro de Tecnologias de Informacion y Comunicaciones, Universidad Nacional de Ingenieria, Lima (Peru); Araya, Ignacio J. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, Santiago (Chile); Huerta, Humberto Martinez; Flores, Alejandra Parra [Facultad de Ciencias Fisico Matematicas, Benemerita Universidad Autonoma de Puebla, Puebla (Mexico); Knapp, Johannes [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)

2009-04-30T23:59:59.000Z

349

DOE-HDBK-3010-94; Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3010-94 3010-94 December 1994 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94 Page i VOLUME II: APPENDICES APPENDIX A

350

Arrival time and magnitude of airborne fission products from the Fukushima, Japan, reactor incident as measured in Seattle, WA, USA  

E-Print Network (OSTI)

We report results of air monitoring started due to the recent natural catastrophe on 11 March 2011 in Japan and the severe ensuing damage to the Fukushima Dai-ichi nuclear reactor complex. On 17-18 March 2011, we registered the first arrival of the airborne fission products 131-I, 132-I, 132-Te, 134-Cs, and 137-Cs in Seattle, WA, USA, by identifying their characteristic gamma rays using a germanium detector. We measured the evolution of the activities over a period of 23 days at the end of which the activities had mostly fallen below our detection limit. The highest detected activity amounted to 4.4 +/- 1.3 mBq/m^3 of 131-I on 19-20 March.

J. Diaz Leon; D. A. Jaffe; J. Kaspar; A. Knecht; M. L. Miller; R. G. H. Robertson; A. G. Schubert

2011-03-24T23:59:59.000Z

351

Unmanned airborne vehicle (UAV): Flight testing and evaluation of two-channel E-field very low frequency (VLF) instrument  

SciTech Connect

Using VLF frequencies, transmitted by the Navy`s network, for airborne remote sensing of the earth`s electrical, magnetic characteristics was first considered by the United States Geological Survey (USGS) around the mid 1970s. The first VLF system was designed and developed by the USGS for installation and operation on a single engine, fixed wing aircraft used by the Branch of Geophysics for geophysical surveying. The system consisted of five channels. Two E-field channels with sensors consisting of a fixed vertical loaded dipole antenna with pre-amp mounted on top of the fuselage and a gyro stabilized horizontal loaded dipole antenna with pre-amp mounted on a tail boom. The three channel magnetic sensor consisted of three orthogonal coils mounted on the same gyro stabilized platform as the horizontal E-field antenna. The main features of the VLF receiver were: narrow band-width frequency selection using crystal filters, phase shifters for zeroing out system phase variances, phase-lock loops for generating real and quadrature gates, and synchronous detectors for generating real and quadrature outputs. In the mid 1990s the Branch of Geophysics designed and developed a two-channel E-field ground portable VLF system. The system was built using state-of-the-art circuit components and new concepts in circuit architecture. Small size, light weight, low power, durability, and reliability were key considerations in the design of the instrument. The primary purpose of the instrument was for collecting VLF data during ground surveys over small grid areas. Later the system was modified for installation on a Unmanned Airborne Vehicle (UAV). A series of three field trips were made to Easton, Maryland for testing and evaluating the system performance.

NONE

1998-12-01T23:59:59.000Z

352

An ontology for trajectory simulation  

Science Conference Proceedings (OSTI)

From the concept exploration for a weapon system to training simulators, from hardware-in-the-loop simulators to mission planning tools, trajectory simulations are used throughout the life cycle of a weapon system. A trajectory simulation can be defined ...

Umut Durak; Halit Oguztuzun; S. Kemal Ider

2006-12-01T23:59:59.000Z

353

Retrieval of Ice Cloud Properties from AIRS and MODIS Observations Based on a Fast High-Spectral-Resolution Radiative Transfer Model  

Science Conference Proceedings (OSTI)

A computationally efficient high-spectral-resolution cloudy-sky radiative transfer model (HRTM) in the thermal infrared region (700–1300 cm?1, 0.1 cm?1 spectral resolution) is advanced for simulating the upwelling radiance at the top of atmosphere ...

Chenxi Wang; Ping Yang; Steven Platnick; Andrew K. Heidinger; Bryan A. Baum; Thomas Greenwald; Zhibo Zhang; Robert E. Holz

2013-03-01T23:59:59.000Z

354

Power Market Simulation Workshop  

Science Conference Proceedings (OSTI)

EPRI's first seminar on electricity market simulation provided a forum for discussion of potential modifications and applications for this new technology, specifically in the areas of market design and operations. The resounding messages heard from both speakers and participants were as follows: o The use of simulation for electricity markets has the potential to help society avoid devastating costs due to market flaws. o Market simulation can be broadly applied with a diverse set of potential users. o C...

2002-12-30T23:59:59.000Z

355

House Simulation Protocols Report  

Energy.gov (U.S. Department of Energy (DOE))

Building America's House Simulation Protocols report is designed to assist researchers in tracking the progress of multiyear, whole-building energy reduction against research goals for new and...

356

Ferrocyanide waste simulant characterization  

Science Conference Proceedings (OSTI)

Ferrocyanide waste simulants were prepared and characterized to help assess safety concerns associated with the ferrocyanide sludges stored in underground single-shell waste tanks at the Hanford Site. Simulants were prepared to represent the variety of ferrocyanide sludges stored in the storage tanks. Physical properties, chemical compositions, and thermodynamic properties of the simulants were determined. The simulants, as produced, were shown to not sustain propagating reactions when subjected to a strong ignition source. Additional testing and evaluations are recommended to assess safety concerns associated with postulated ferrocyanide sludge dry-out and exposure to external ignition sources.

Jeppson, D.W.; Wong, J.J.

1993-01-01T23:59:59.000Z

357

AVESTAR® - Gasification Dynamic Simulator  

NLE Websites -- All DOE Office Websites (Extended Search)

Meet Our Partners Simulators IGCC Gasification Combined Cycle NGCC SCOT Oxy-coal Shale Gas 3D Virtual IGCC Training How to Register for Training IGCC Gasification Combined...

358

Dynamic Infrared Simulation.  

E-Print Network (OSTI)

?? The increased usage of infrared sensors by pilots has created a growing demand for simulated environments based on infrared radiation. This has led to… (more)

Dehlin, Jonas

2006-01-01T23:59:59.000Z

359

A Molecular Simulation Study  

Science Conference Proceedings (OSTI)

Presentation Title, Enhanced CO2 Adsorption in Ti-exchanged Zirconium Organic Frameworks – A Molecular Simulation Study. Author(s), Ravichandar Babarao ...

360

Using simulated partial dynamic run-time reconfiguration to share embedded FPGA compute and power resources across a swarm of unpiloted airborne vehicles  

Science Conference Proceedings (OSTI)

We show how the limited electrical power and FPGA compute resources available in a swarm of small UAVs can be shared by moving FPGA tasks from one UAV to another. A software and hardware infrastructure that supports the mobility of embedded FPGA applications ...

David Kearney; Mark Jasiunas

2007-01-01T23:59:59.000Z

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


361

Twenty-First-Century Compatible CO2 Emissions and Airborne Fraction Simulated by CMIP5 Earth System Models under Four Representative Concentration Pathways  

Science Conference Proceedings (OSTI)

The carbon cycle is a crucial Earth system component affecting climate and atmospheric composition. The response of natural carbon uptake to CO2 and climate change will determine anthropogenic emissions compatible with a target CO2 pathway. For ...

Chris Jones; Eddy Robertson; Vivek Arora; Pierre Friedlingstein; Elena Shevliakova; Laurent Bopp; Victor Brovkin; Tomohiro Hajima; Etsushi Kato; Michio Kawamiya; Spencer Liddicoat; Keith Lindsay; Christian H. Reick; Caroline Roelandt; Joachim Segschneider; Jerry Tjiputra

2013-07-01T23:59:59.000Z

362

The Airborne Demonstrator for the Direct-Detection Doppler Wind Lidar ALADIN on ADM-Aeolus. Part II: Simulations and Rayleigh Receiver Radiometric Performance  

Science Conference Proceedings (OSTI)

In the frame of the Atmospheric Dynamics Mission Aeolus (ADM-Aeolus) satellite mission by the European Space Agency (ESA), a prototype of a direct-detection Doppler wind lidar was developed to measure wind from ground and aircraft at 355 nm. Wind ...

Ulrike Paffrath; Christian Lemmerz; Oliver Reitebuch; Benjamin Witschas; Ines Nikolaus; Volker Freudenthaler

2009-12-01T23:59:59.000Z

363

Radiation detector spectrum simulator  

DOE Patents (OSTI)

A small battery operated nuclear spectrum simulator having a noise source generates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith to generate several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

Wolf, M.A.; Crowell, J.M.

1985-04-09T23:59:59.000Z

364

Radiation detector spectrum simulator  

SciTech Connect

A small battery operated nuclear spectrum simulator having a noise source nerates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith generates several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

Wolf, Michael A. (Los Alamos, NM); Crowell, John M. (Los Alamos, NM)

1987-01-01T23:59:59.000Z

365

DOE-HDBK-3010-94; DOE Handbook Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

10-94 10-94 December 1994 CHANGE NOTICE NO. 1 March 2000 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. Change Notice No. 1 DOE-HDBK-3010-94 March 2000 Airborne Release Fractions/Rates and Respirable Fractions

366

Evaluation of airborne geophysical surveys for large-scale mapping of contaminated mine pools: draft final report  

SciTech Connect

Decades of underground coal mining has left about 5,000 square miles of abandoned mine workings that are rapidly filling with water. The water quality of mine pools is often poor; environmental regulatory agencies are concerned because water from mine pools could contaminate diminishing surface and groundwater supplies. Mine pools are also a threat to the safety of current mining operations. Conversely, mine pools are a large, untapped water resource that, with treatment, could be used for a variety of industrial purposes. Others have proposed using mine pools in conjunction with heat pumps as a source of heating and cooling for large industrial facilities. The management or use of mine pool water requires accurate maps of mine pools. West Virginia University has predicted the likely location and volume of mine pools in the Pittsburgh Coalbed using existing mine maps, structure contour maps, and measured mine pool elevations. Unfortunately, mine maps only reflect conditions at the time of mining, are not available for all mines, and do not always denote the maximum extent of mining. Since 1999, the National Energy Technology Laboratory (NETL) has been evaluating helicopter-borne, electromagnetic sensing technologies for the detection and mapping of mine pools. Frequency domain electromagnetic sensors are able to detect shallow mine pools (depth < 50 m) if there is sufficient contrast between the conductance of the mine pool and the conductance of the overburden. The mine pools (conductors) most confidently detected by this technology are overlain by thick, resistive sandstone layers. In 2003, a helicopter time domain electromagnetic sensor was applied to mined areas in southwestern Virginia in an attempt to increase the depth of mine pool detection. This study failed because the mine pool targets were thin and not very conductive. Also, large areas of the surveys were degraded or made unusable by excessive amounts of cultural electromagnetic noise that obscured the subtle mine pool anomalies. However, post-survey modeling suggested that thicker, more conductive mine pools might be detected at a more suitable location. The current study sought to identify the best time domain electromagnetic sensor for detecting mine pools and to test it in an area where the mine pools are thicker and more conductive that those in southwestern Virginia. After a careful comparison of all airborne time domain electromagnetic sensors (including both helicopter and fixed-wing systems), the SkyTEM system from Denmark was determined to be the best technology for this application. Whereas most airborne time domain electromagnetic systems were developed to find large, deep, highly conductive mineral deposits, the SkyTEM system is designed for groundwater exploration studies, an application similar to mine pool detection.

Geosciences Division, National Energy Technology Laboratory, US Department of Energy, Pittsburgh, PA; Hammack, R.W.

2006-12-28T23:59:59.000Z

367

Escorted free energy simulations  

Science Conference Proceedings (OSTI)

We describe a strategy to improve the efficiency of free energy estimates by reducing dissipation in nonequilibrium Monte Carlo simulations. This strategy generalizes the targeted free energyperturbation approach [C. Jarzynski

Suriyanarayanan Vaikuntanathan; Christopher Jarzynski

2011-01-01T23:59:59.000Z

368

Geology and Reservoir Simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

Service: 1-800-553-7681 Geology and Reservoir Simulation Background Natural gas from shale is becoming ever more recognized as an abundant and economically viable fuel in the...

369

Image simulation using LOCUS  

SciTech Connect

The LOCUS data base program has been used to simulate images and to solve simple equations. This has been accomplished by making each record (which normally would represent a data entry)represent sequenced or random number pairs.

Strachan, J.D.; Roberts, J.A.

1989-09-01T23:59:59.000Z

370

Simulations and symbolic explanations  

Science Conference Proceedings (OSTI)

The following paper defines the problem of writing symbolic explanation facilities for computer simulations. Our approach towards this problem draws from an existing body of research on a related problem, that of writing an explanation facility for an ...

D H Helman; J L Bennett; A W Foster

1986-12-01T23:59:59.000Z

371

The Sky Simulator  

NLE Websites -- All DOE Office Websites (Extended Search)

framework. The sun is simulated with a 1,000-watt halogen lamp inside a parabolic mirror dish mounted on a track. It can assume any altitude angle from the horizon to the zenith....

372

Modeling & Simulation publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Modeling & Simulation » Modeling & Simulation » Modeling & Simulation Publications Modeling & Simulation publications Research into alternative forms of energy, especially energy security, is one of the major national security imperatives of this century. Get Expertise David Harradine Physical Chemistry and Applied Spectroscopy Email Josh Smith Chemistry Email The inherent knowledge of transformation has beguiled sorcerers and scientists alike. D.A. Horner, F. Lambert, J.D. Kress, and L.A. Collins, "Transport properties of lithium hydride from quantum molecular dynamics and orbital-free molecular dynamics," Physical Review B - Condensed Matter and Materials Physics 80(2) (2009). J.D. Kress, D.A. Horner, and L.A. Collins, "Mixing rules for optical and transport properties of warm, dense matter," AIP Conference Proceedings 1195, 931-934 (2009).

373

Applications of HRSG Simulation  

E-Print Network (OSTI)

Heat Recovery Steam Generators are widely used in cogeneration and combined cycle plants generating steam utilizing energy from gas turbine exhaust. Before planning cogen projects, consultants should study various options available in terms of steam parameters and select the optimum. Simulation helps plan such studies. In addition, useful "what if" studies can be performed without even designing the HRSG, thus saving valuable time. This article outlines the applications of HRSG simulation and how plant engineers, consultants can benefit from such studies.

Ganapathy, V. V.

1995-04-01T23:59:59.000Z

374

Theory Modeling and Simulation  

SciTech Connect

Los Alamos has a long history in theory, modeling and simulation. We focus on multidisciplinary teams that tackle complex problems. Theory, modeling and simulation are tools to solve problems just like an NMR spectrometer, a gas chromatograph or an electron microscope. Problems should be used to define the theoretical tools needed and not the other way around. Best results occur when theory and experiments are working together in a team.

Shlachter, Jack [Los Alamos National Laboratory

2012-08-23T23:59:59.000Z

375

Xyce parallel electronic simulator.  

Science Conference Proceedings (OSTI)

This document is a reference guide to the Xyce Parallel Electronic Simulator, and is a companion document to the Xyce Users' Guide. The focus of this document is (to the extent possible) exhaustively list device parameters, solver options, parser options, and other usage details of Xyce. This document is not intended to be a tutorial. Users who are new to circuit simulation are better served by the Xyce Users' Guide.

Keiter, Eric Richard; Mei, Ting; Russo, Thomas V.; Rankin, Eric Lamont; Schiek, Richard Louis; Thornquist, Heidi K.; Fixel, Deborah A.; Coffey, Todd Stirling; Pawlowski, Roger Patrick; Santarelli, Keith R.

2010-05-01T23:59:59.000Z

376

Final Report DE-EE0005380: Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems  

SciTech Connect

Offshore wind energy is a valuable resource that can provide a significant boost to the US renewable energy portfolio. A current constraint to the development of offshore wind farms is the potential for interference to be caused by large wind farms on existing electronic and acoustical equipment such as radar and sonar systems for surveillance, navigation and communications. The US Department of Energy funded this study as an objective assessment of possible interference to various types of equipment operating in the marine environment where offshore wind farms could be installed. The objective of this project was to conduct a baseline evaluation of electromagnetic and acoustical challenges to sea surface, subsurface and airborne electronic systems presented by offshore wind farms. To accomplish this goal, the following tasks were carried out: (1) survey electronic systems that can potentially be impacted by large offshore wind farms, and identify impact assessment studies and research and development activities both within and outside the US, (2) engage key stakeholders to identify their possible concerns and operating requirements, (3) conduct first-principle modeling on the interactions of electromagnetic signals with, and the radiation of underwater acoustic signals from, offshore wind farms to evaluate the effect of such interactions on electronic systems, and (4) provide impact assessments, recommend mitigation methods, prioritize future research directions, and disseminate project findings. This report provides a detailed description of the methodologies used to carry out the study, key findings of the study, and a list of recommendations derived based the findings.

Ling, Hao [The University of Texas at Austin] [The University of Texas at Austin; Hamilton, Mark F. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Bhalla, Rajan [Science Applications International Corporation] [Science Applications International Corporation; Brown, Walter E. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Hay, Todd A. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Whitelonis, Nicholas J. [The University of Texas at Austin] [The University of Texas at Austin; Yang, Shang-Te [The University of Texas at Austin] [The University of Texas at Austin; Naqvi, Aale R. [The University of Texas at Austin] [The University of Texas at Austin

2013-09-30T23:59:59.000Z

377

Airborne Geophysical Surveys in the North-Central Region of Goias (Brazil): Implications for Radiometric Characterization of Subtropical Soils  

E-Print Network (OSTI)

In this work we present progress obtained in analysis airborne geophysical survey data for the north-central region of the state of Goias (Brazil). The results obtained indicate that most of the subtropical soil types are characterized by Uranium contents of greater than one parts per million (ppm). Only ultisol and oxisol soils are found to have Uranium contents lower than one ppm. Thorium and Potassium abundances also display trends similar to those of Uranium. The K/U ratios fall in the expected range of values for common soils while the Th/U ratios are higher than normal. This latter observation may indicate a characteristic feature of subtropical soils. Alternatively it may be considered as indicative of disequilibrium conditions in radioactive series and consequent underestimation of Uranium in soil layers of the study area. In this context we point out the possibility of using results of radiometric surveys as a convenient complementary tool in identifying geochemical zoning of soils in subtropical env...

Guimarães, S N P; Justo, J S

2011-01-01T23:59:59.000Z

378

The development and application of the chemical mixture methodology in analysis of potential health impacts from airborne release in emergencies  

SciTech Connect

The Chemical Mixture Methodology (CMM) is used for emergency response and safety planning by the U.S. Department of Energy, its contractors, and other private and public sector organizations. The CMM estimates potential health impacts on individuals and their ability to take protective actions as a result of exposure to airborne chemical mixtures. They are based on the concentration of each chemical in the mixture at a designated receptor location, the protective action criteria (PAC) providing chemical-specific exposure limit values, and the health code numbers (HCNs) that identify the target organ groupings that may be impacted by exposure to each chemical in a mixture. The CMM has been significantly improved since its introduction more than 10 years ago. Major enhancements involve the expansion of the number of HCNs from 44 to 60 and inclusion of updated PAC values based on an improved development methodology and updates in the data used to derive the PAC values. Comparisons between the 1999 and 2009 versions of the CMM show potentially substantial changes in the assessment results for selected sets of chemical mixtures. In particular, the toxic mode hazard indices (HIs) and target organ HIs are based on more refined acute HCNs, thereby improving the quality of chemical consequence assessment, emergency planning, and emergency response decision making. Seven hypothetical chemical storage and processing scenarios are used to demonstrate how the CMM is applied in emergency planning and hazard assessment.

Yu, Xiao-Ying; Petrocchi, Achille J.; Craig, Douglas K.; Glantz, Clifford S.; Trott, Donna M.; Ciolek, John T.; Lu, Po-Yung; Bond, Jayne-Anne; Tuccinardi, Thomas E.; Bouslaugh, Philip R.

2010-07-15T23:59:59.000Z

379

Computer simulation | Open Energy Information  

Open Energy Info (EERE)

2013 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Computer simulation Citation wikipedia. Computer simulation Internet....

380

High Performance Computing: Modeling & Simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

High Performance Computing: Modeling & Simulation High Performance Computing: Modeling & Simulation Express Licensing Adaptive Real-Time Methodology for Optimizing Energy-Efficient...

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


381

Computers in teaching science: To simulate or not to simulate?  

Science Conference Proceedings (OSTI)

Do computer simulations help students learn science? How can we tell? Are there negative implications of using simulations to teach students about real world phenomena? In this paper I describe my experience using a computer simulation on air resistance. In order to parse out the effects of using the computer simulation and of having an interactive learning environment

Richard N. Steinberg

2000-01-01T23:59:59.000Z

382

Computers in teaching science: To simulate or not to simulate?  

E-Print Network (OSTI)

Computers in teaching science: To simulate or not to simulate? Richard N. Steinberg City College of New York Phys. Ed. Res. Suppl. to Am. J. Phys. 68, S37-S41 (2000) Do computer simulations help students about real world phenomena? In this paper I describe my experience using a computer simulation

Steinberg, Richard N.

383

Advanced Simulation Capability for  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Simulation Capability for Simulation Capability for Environmental Management (ASCEM) ASCEM is being developed to provide a tool and approach to facilitate robust and standardized development of perfor- mance and risk assessments for cleanup and closure activi- ties throughout the EM complex. The ASCEM team is composed of scientists from eight National Laboratories. This team is leveraging Department of Energy (DOE) investments in basic science and applied research including high performance computing codes developed through the Advanced Scientific Computing Research and Advanced Simulation & Computing pro- grams as well as collaborating with the Offices of Science, Fossil Energy, and Nuclear Energy. Challenge Current groundwater and soil remediation challenges that will continue to be addressed in the next decade include

384

Simulating neural systems with Xyce.  

SciTech Connect

Sandia's parallel circuit simulator, Xyce, can address large scale neuron simulations in a new way extending the range within which one can perform high-fidelity, multi-compartment neuron simulations. This report documents the implementation of neuron devices in Xyce, their use in simulation and analysis of neuron systems.

Schiek, Richard Louis; Thornquist, Heidi K.; Mei, Ting; Warrender, Christina E.; Aimone, James Bradley; Teeter, Corinne; Duda, Alex M. [University of Illinois, Urbana-Champaign] University of Illinois, Urbana-Champaign

2012-12-01T23:59:59.000Z

385

Toroidal simulation magnet tests  

SciTech Connect

A number of different schemes for testing superconducting coils in a simulated tokamak environment are analyzed for their merits relative to a set of test criteria. Two of the concepts are examined in more detail: the so-called cluster test scheme, which employs two large background field coils, one on either side of the test coil, and the compact torus, a low-aspect ratio toroidal array of a small number of coils in which all of the coils are essentially test coils. Simulation of the pulsed fields of the tokamak is discussed briefly. (auth)

Walstrom, P.L.; Domm, T.C.

1975-01-01T23:59:59.000Z

386

Advanced Simulation and Computing  

National Nuclear Security Administration (NNSA)

NA-ASC-117R-09-Vol.1-Rev.0 NA-ASC-117R-09-Vol.1-Rev.0 Advanced Simulation and Computing PROGRAM PLAN FY09 October 2008 ASC Focal Point Robert Meisner, Director DOE/NNSA NA-121.2 202-586-0908 Program Plan Focal Point for NA-121.2 Njema Frazier DOE/NNSA NA-121.2 202-586-5789 A Publication of the Office of Advanced Simulation & Computing, NNSA Defense Programs i Contents Executive Summary ----------------------------------------------------------------------------------------------- 1 I. Introduction -------------------------------------------------------------------------------------------------------- 2 Realizing the Vision ------------------------------------------------------------------------------------------------- 2 The Future of the Nuclear Weapons Complex ---------------------------------------------------------------- 2

387

Airborne and ground-based measurements of the trace gases and particles emitted from prescribed fires in the United States  

SciTech Connect

We measured the emission factors for 19 trace gas species and particulate matter (PM2.5) from 14 prescribed fires in chaparral and oak savanna in the southwestern US, as well as pine forest understory in the southeastern US and Sierra Nevada mountains of California. These are likely the most extensive emission factor field measurements for temperate biomass burning to date and the only published emission factors for temperate oak savanna fuels. This study helps close the gap in emissions data available for temperate zone fires relative to tropical biomass burning. We present the first field measurements of the biomass burning emissions of glycolaldehyde, a possible precursor for aqueous phase secondary organic aerosol formation. We also measured the emissions of phenol, another aqueous phase secondary organic aerosol precursor. Our data confirm previous suggestions that urban deposition can impact the NOx emission factors and thus subsequent plume chemistry. For two fires, we measured the emissions in the convective smoke plume from our airborne platform at the same time the unlofted residual smoldering combustion emissions were measured with our ground-based platform after the flame front passed through. The smoke from residual smoldering combustion was characterized by emission factors for hydrocarbon and oxygenated organic species that were up to ten times higher than in the lofted plume, including significant 1,3-butadiene and isoprene concentrations which were not observed in the lofted plume. This should be considered in modeling the air quality impacts of smoke that disperses at ground level, and we show that the normally-ignored unlofted emissions can also significantly impact estimates of total emissions. Preliminary evidence of large emissions of monoterpenes was seen in the residual smoldering spectra, but we have not yet quantified these emissions. These data should lead to an improved capacity to model the impacts of biomass burning in similar ecosystems.

Burling, Ian; Yokelson, Robert J.; Akagi, Sheryl; Urbanski, Shawn; Wold, Cyle E.; Griffith, David WT; Johnson, Timothy J.; Reardon, James; Weise, David

2011-12-07T23:59:59.000Z

388

Allergy arising from exposure to airborne contaminants in an insect rearing facility: Health effects and exposure control  

SciTech Connect

In agricultural crop improvement, yield under various stress conditions and limiting factors is assessed experimentally. Of the stresses on plants which affect yield are those due to insects. Ostrinia nubilalis, the European corn borer (corn borer) is a major pest in sweet and field corn in the U.S. There are many ways to fight crop pests such as the corn borer, including (1) application of chemical insecticides, (2) application of natural predators and, (3) improving crop resistance through plant genetics programs. Randomized field trials are used to determine the effectiveness of pest management programs. These trials frequently consist of randomly selected crop plots to which well-defined input regimes are instituted. For example, corn borers might be released onto crop plots in several densities at various stages of crop development, then sprayed with different levels of pesticide. These experiments are duplicated across regions and, in some cases across the country, to determine, in this instance for example, the best pesticide application rate for a given pest density and crop development stage. In order to release these pests onto crop plots, one must have an adequate supply of the insect pest. In winter months studies are carried out in the laboratory to examine chemical and natural pesticide effectiveness, as well as such things as the role of pheromones in moth behavior. The advantage in field trials is that yield data can be garnered directly. In this country, insects are raised for crop research primarily through the US Department of Agriculture, in cooperation with public Land Grant Universities and, by the private sector agricultural concerns - seed companies and others. This study quantifies the airborne allergen exposure of persons working in a Land Grant University entomology lab were allergy to European corn borer was suspected.

Wolff, D.

1994-06-01T23:59:59.000Z

389

Mantle Echoes Associated with Deep Convection: Observations and Numerical Simulations  

Science Conference Proceedings (OSTI)

Finescale radar observations of intense thermals/starting plumes, during the early stages of precipitation formation, were collected by an airborne Doppler radar on two separate days. The radar data were recorded as the aircraft flew underneath ...

Roger M. Wakimoto; Hanne V. Murphey; Robert G. Fovell; Wen-Chau Lee

2004-07-01T23:59:59.000Z

390

Simulation of geothermal subsidence  

DOE Green Energy (OSTI)

The results of an assessment of existing mathematical models for subsidence simulation and prediction are summarized. The following subjects are discussed: the prediction process, physical processes of geothermal subsidence, computational models for reservoir flow, computational models for deformation, proficiency assessment, and real and idealized case studies. (MHR)

Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K.; Schauer, M.

1980-03-01T23:59:59.000Z

391

Ion trap simulation tools.  

Science Conference Proceedings (OSTI)

Ion traps present a potential architecture for future quantum computers. These computers are of interest due to their increased power over classical computers stemming from the superposition of states and the resulting capability to simultaneously perform many computations. This paper describes a software application used to prepare and visualize simulations of trapping and maneuvering ions in ion traps.

Hamlet, Benjamin Roger

2009-02-01T23:59:59.000Z

392

Simulation Data as Data Streams  

SciTech Connect

Computational or scientific simulations are increasingly being applied to solve a variety of scientific problems. Domains such as astrophysics, engineering, chemistry, biology, and environmental studies are benefiting from this important capability. Simulations, however, produce enormous amounts of data that need to be analyzed and understood. In this overview paper, we describe scientific simulation data, its characteristics, and the way scientists generate and use the data. We then compare and contrast simulation data to data streams. Finally, we describe our approach to analyzing simulation data, present the AQSim (Ad-hoc Queries for Simulation data) system, and discuss some of the challenges that result from handling this kind of data.

Abdulla, G; Arrighi, W; Critchlow, T

2003-11-18T23:59:59.000Z

393

Simulation of biochemical networks using COPASI: a complex pathway simulator  

Science Conference Proceedings (OSTI)

Simulation and modeling is becoming one of the standard approaches to understand complex biochemical processes. Therefore, there is a big need for software tools that allow access to diverse simulation and modeling methods as well as support for the ...

Sven Sahle; Ralph Gauges; Jürgen Pahle; Natalia Simus; Ursula Kummer; Stefan Hoops; Christine Lee; Mudita Singhal; Liang Xu; Pedro Mendes

2006-12-01T23:59:59.000Z

394

Simulation-based optimization: practical introduction to simulation optimization  

Science Conference Proceedings (OSTI)

The merging of optimization and simulation technologies has seen a rapid growth in recent years. A Google search on "Simulation Optimization" returns more than six thousand pages where this phrase appears. The content of these pages ranges from articles, ...

Jay April; Fred Glover; James P. Kelly; Manuel Laguna

2003-12-01T23:59:59.000Z

395

Simulation standards: a framework for standard modular simulation  

Science Conference Proceedings (OSTI)

The primary reason for building manufacturing simulations is to provide support tools that aid the manufacturing decision-making process. Simulations are typically a part of a case study commissioned by manufacturing management to address a particular ...

Charles McLean; Swee Leong

2002-12-01T23:59:59.000Z

396

Risk Analysis and Simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

Analysis and Simulation Analysis and Simulation for Geologic Storage of CO 2 BEST PRACTICES for: 2013 Revised Edition Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The

397

Implicit Large Eddy Simulation  

National Nuclear Security Administration (NNSA)

Implicit Implicit Large Eddy Simulation (ILES) for High Reynolds Number Flows Len Margolin Applied Physics Division Los Alamos National Laboratory Collaborators: 1. Bill Rider (LANL) 2. Piotr Smolarkiewicz (NCAR) 3. Andrzej Wysogrodski (NCAR) 4. Fernando Grinstein (NRL) len@lanl.gov 1 Implicit Large Eddy Simulation Outline: * What is ILES? * What are its advantages? * Historical perspective * Why does it work? * Some examples len@lanl.gov 2 What is ILES ILES is the direct application of a fluid solver to a high Reynolds number fluid flow with no explicit turbulence model. · The truncation terms of the algorithm serve as an effective model of the effects of the unresolved scales. · Fluid solvers based on Nonoscillatory Finite Volume (NFV) approximations work effectively for ILES. · Fluid solvers based on pseudospectral methods, leapfrog methods, advective form methods, etc. do not work

398

The Simulation Intranet Architecture  

Science Conference Proceedings (OSTI)

The Simdarion Infranet (S1) is a term which is being used to dcscribc one element of a multidisciplinary distributed and distance computing initiative known as DisCom2 at Sandia National Laboratory (http ct al. 1998). The Simulation Intranet is an architecture for satisfying Sandia's long term goal of providing an end- to-end set of scrviccs for high fidelity full physics simu- lations in a high performance, distributed, and distance computing environment. The Intranet Architecture group was formed to apply current distributed object technologies to this problcm. For the hardware architec- tures and software models involved with the current simulation process, a CORBA-based architecture is best suited to meet Sandia's needs. This paper presents the initial desi-a and implementation of this Intranct based on a three-tier Network Computing Architecture(NCA). The major parts of the architecture include: the Web Cli- ent, the Business Objects, and Data Persistence.

Holmes, V.P.; Linebarger, J.M.; Miller, D.J.; Vandewart, R.L.

1998-12-02T23:59:59.000Z

399

Fast Simulation and Modeling  

Science Conference Proceedings (OSTI)

The "Fast Simulation and Modeling" (FSM) project of the IntelliGrid Consortium is developing a high-performance "look-ahead" capability for a self-healing grid8212one capable of automatically anticipating and responding to power system disturbances while continually optimizing its own performance. This project's roadmap assesses individual software solutions and equipment components that vendors will provide during the next 5 to 15 years and that electric power companies will adopt to realize FSM's self-...

2007-12-19T23:59:59.000Z

400

Radiation in Particle Simulations  

SciTech Connect

Hot dense radiative (HDR) plasmas common to Inertial Confinement Fusion (ICF) and stellar interiors have high temperature (a few hundred eV to tens of keV), high density (tens to hundreds of g/cc) and high pressure (hundreds of megabars to thousands of gigabars). Typically, such plasmas undergo collisional, radiative, atomic and possibly thermonuclear processes. In order to describe HDR plasmas, computational physicists in ICF and astrophysics use atomic-scale microphysical models implemented in various simulation codes. Experimental validation of the models used to describe HDR plasmas are difficult to perform. Direct Numerical Simulation (DNS) of the many-body interactions of plasmas is a promising approach to model validation but, previous work either relies on the collisionless approximation or ignores radiation. We present four methods that attempt a new numerical simulation technique to address a currently unsolved problem: the extension of molecular dynamics to collisional plasmas including emission and absorption of radiation. The first method applies the Lienard-Weichert solution of Maxwell's equations for a classical particle whose motion is assumed to be known. The second method expands the electromagnetic field in normal modes (planewaves in a box with periodic boundary-conditions) and solves the equation for wave amplitudes coupled to the particle motion. The third method is a hybrid molecular dynamics/Monte Carlo (MD/MC) method which calculates radiation emitted or absorbed by electron-ion pairs during close collisions. The fourth method is a generalization of the third method to include small clusters of particles emitting radiation during close encounters: one electron simultaneously hitting two ions, two electrons simultaneously hitting one ion, etc. This approach is inspired by the virial expansion method of equilibrium statistical mechanics. Using a combination of these methods we believe it is possible to do atomic-scale particle simulations of fusion ignition plasmas including the important effects of radiation emission and absorption.

More, R; Graziani, F; Glosli, J; Surh, M

2010-11-19T23:59:59.000Z

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


401

Performance simulation and prediction  

DOE Green Energy (OSTI)

Computational procedures useful during the passive solar design process are discussed. Analysis tools are described suitable for each of the three phases of design: rules of thumb for the concept development phase, quick-and-dirty techniques for the design development phase, and the monthly solar load ratio method for the final design phase. Issues are discussed regarding the role of simulation analysis during the design process.

Balcomb, J.D.

1979-01-01T23:59:59.000Z

402

COLLABORATIVE: FUSION SIMULATION PROGRAM  

SciTech Connect

New York University, Courant Institute of Mathematical Sciences, participated in the ���¢��������Fusion Simulation Program (FSP) Planning Activities���¢������� [http://www.pppl.gov/fsp], with C.S. Chang as the institutional PI. FSP���¢��������s mission was to enable scientific discovery of important new plasma phenomena with associated understanding that emerges only upon integration. This requires developing a predictive integrated simulation capability for magnetically-confined fusion plasmas that are properly validated against experiments in regimes relevant for producing practical fusion energy. Specific institutional goal of the New York University was to participate in the planning of the edge integrated simulation, with emphasis on the usage of large scale HPCs, in connection with the SciDAC CPES project which the PI was leading. New York University successfully completed its mission by participating in the various planning activities, including the edge physics integration, the edge science drivers, and the mathematical verification. The activity resulted in the combined report that can be found in http://www.pppl.gov/fsp/Overview.html. Participation and presentations as part of this project are listed in a separation file.

Chang, Choong Seock

2012-06-05T23:59:59.000Z

403

Virtual urban traffic network simulator  

E-Print Network (OSTI)

In this project, I designed and implemented a virtual urban traffic network simulator. The simulator serves as a testbed for human-subject experiments to determine driver behavior in road networks and also as a platform ...

Uh, Jason (Jason J.)

2011-01-01T23:59:59.000Z

404

A Simulation of Alberta Cumulus  

Science Conference Proceedings (OSTI)

A two-dimensional cloud model was used to simulate an Alberta, Canada, seeding experiment that was conducted on 24 July 1979, by the Alberta Research Council. The simulation reproduced some of the characteristics of the silver iodide seeded cloud ...

Fred J. Kopp

1988-05-01T23:59:59.000Z

405

Computer simulations of cardiac electrophysiology  

Science Conference Proceedings (OSTI)

CardioWave is a modular system for simulating wavefront conduction in the heart. These simulations may be used to investigate the factors that generate and sustain life-threatening arrhythmias such as ventricular fibrillation. The user selects a set ...

John B. Pormann; Craig S. Henriquez; John A. Board, Jr.; Donald J. Rose; David M. Harrild; Alexandra P. Henriquez

2000-11-01T23:59:59.000Z

406

Simulations of nanoscale spatial disorder  

E-Print Network (OSTI)

In this thesis, we detail the design, implementation, and testing of two simulations of nanometer scale disorder phenomena important for electronic device fabrication. We created a kinetic simulator for the surface assembly ...

Howe, Ethan (Ethan Gabriel Grief)

2006-01-01T23:59:59.000Z

407

Translation Effects on Simulated Tornadoes  

Science Conference Proceedings (OSTI)

A simulation of tornadoes translating over the ground was carried out in a modified Ward simulator. The purpose was to investigate the effects of translation on tornado dynamics. The results are as follows:

Chris J. Diamond; Eugene M. Wilkins

1984-09-01T23:59:59.000Z

408

Design of mechanical arterial simulator  

E-Print Network (OSTI)

A force controlled ultrasound probe is being explored as a new method of measuring blood pressure. An arterial simulator was designed and built for experiments. For this simulator, the vessels and bulk material were designed ...

Chai, Lauren (Lauren Amy)

2012-01-01T23:59:59.000Z

409

Simulation of Sextet Diquark Production  

E-Print Network (OSTI)

We present a method for simulating the production and decay of particles in the sextet representation of $SU(3)_C$ including the simulation of QCD radiation. First results from the Monte Carlo simulation of sextet diquark production at the LHC including both resonant and pair production are presented. We include limits on resonant diquark production from recent ATLAS results and perform the first simulation studies of the less model dependent pair production mechanism.

Peter Richardson; David Winn

2011-08-31T23:59:59.000Z

410

Residual Stresses and Numerical Simulation  

Science Conference Proceedings (OSTI)

Oct 28, 2013 ... Advances in Hydroelectric Turbine Manufacturing and Repair: Residual Stresses and Numerical Simulation Sponsored by: Metallurgical ...

411

Circuit simulation: some humbling thoughts  

Science Conference Proceedings (OSTI)

A short, very personal note on circuit simulation is presented. It does neither include theoretical background on circuit simulation, nor offers an overview of available software, but just gives some general remarks for a discussion on circuit simulator needs in context to the design and development of accelerator beam instrumentation circuits and systems.

Wendt, Manfred; /Fermilab

2006-01-01T23:59:59.000Z

412

Bio-threat microparticle simulants  

SciTech Connect

A bio-threat simulant that includes a carrier and DNA encapsulated in the carrier. Also a method of making a simulant including the steps of providing a carrier and encapsulating DNA in the carrier to produce the bio-threat simulant.

Farquar, George Roy; Leif, Roald N

2012-10-23T23:59:59.000Z

413

Simulation in education and training  

Science Conference Proceedings (OSTI)

Historically, the use of simulation has been an important aspect of training in some fields (such as aviation). As the cost of computing power decreases simulation is now finding its way into training for other fields. As simulation moves into these ...

J. Peter Kincaid; Ken K. Westerlund

2009-12-01T23:59:59.000Z

414

Utility Analysis of Parallel Simulation  

Science Conference Proceedings (OSTI)

Parallel computers are used to execute discrete-event simulations in contexts where a serial computer is unable to provide answers fast enough, and/or is unable to hold the simulation state in memory. Traditional research in parallel simulation has focused ...

David M. Nicol

2003-06-01T23:59:59.000Z

415

Plasma Simulation Program  

SciTech Connect

Many others in the fusion energy and advanced scientific computing communities participated in the development of this plan. The core planning team is grateful for their important contributions. This summary is meant as a quick overview the Fusion Simulation Program's (FSP's) purpose and intentions. There are several additional documents referenced within this one and all are supplemental or flow down from this Program Plan. The overall science goal of the DOE Office of Fusion Energy Sciences (FES) Fusion Simulation Program (FSP) is to develop predictive simulation capability for magnetically confined fusion plasmas at an unprecedented level of integration and fidelity. This will directly support and enable effective U.S. participation in International Thermonuclear Experimental Reactor (ITER) research and the overall mission of delivering practical fusion energy. The FSP will address a rich set of scientific issues together with experimental programs, producing validated integrated physics results. This is very well aligned with the mission of the ITER Organization to coordinate with its members the integrated modeling and control of fusion plasmas, including benchmarking and validation activities. [1]. Initial FSP research will focus on two critical Integrated Science Application (ISA) areas: ISA1, the plasma edge; and ISA2, whole device modeling (WDM) including disruption avoidance. The first of these problems involves the narrow plasma boundary layer and its complex interactions with the plasma core and the surrounding material wall. The second requires development of a computationally tractable, but comprehensive model that describes all equilibrium and dynamic processes at a sufficient level of detail to provide useful prediction of the temporal evolution of fusion plasma experiments. The initial driver for the whole device model will be prediction and avoidance of discharge-terminating disruptions, especially at high performance, which are a critical impediment to successful operation of machines like ITER. If disruptions prove unable to be avoided, their associated dynamics and effects will be addressed in the next phase of the FSP.

Greenwald, Martin

2011-10-04T23:59:59.000Z

416

Maintenance simulation: Software issues  

SciTech Connect

The maintenance of a distributed software system in a production environment involves: (1) maintaining software integrity, (2) maintaining and database integrity, (3) adding new features, and (4) adding new systems. These issues will be discussed in general: what they are and how they are handled. This paper will present our experience with a distributed resource management system that accounts for resources consumed, in real-time, on a network of heterogenous computers. The simulated environments to maintain this system will be presented relate to the four maintenance areas.

Luk, C.H.; Jette, M.A.

1995-07-01T23:59:59.000Z

417

SEALING SIMULATED LEAKS  

Science Conference Proceedings (OSTI)

This report details the testing equipment, procedures and results performed under Task 7.2 Sealing Simulated Leaks. In terms of our ability to seal leaks identified in the technical topical report, Analysis of Current Field Data, we were 100% successful. In regards to maintaining seal integrity after pigging operations we achieved varying degrees of success. Internal Corrosion defects proved to be the most resistant to the effects of pigging while External Corrosion proved to be the least resistant. Overall, with limitations, pressure activated sealant technology would be a viable option under the right circumstances.

Michael A. Romano

2004-09-01T23:59:59.000Z

418

Fusion Simulation Program  

Science Conference Proceedings (OSTI)

Under this project, General Atomics (GA) was tasked to develop the experimental validation plans for two high priority ISAs, Boundary and Pedestal and Whole Device Modeling in collaboration with the theory, simulation and experimental communities. The following sections have been incorporated into the final FSP Program Plan (www.pppl.gov/fsp), which was delivered to the US Department of Energy (DOE). Additional deliverables by GA include guidance for validation, development of metrics to evaluate success and procedures for collaboration with experiments. These are also part of the final report.

Project Staff (V.S. Chan)

2012-02-29T23:59:59.000Z

419

Airborne Particulate Monitoring  

Science Conference Proceedings (OSTI)

... Measurement Science and Standards 4 Page 5. Coal fly ash (~10 µm) Iron-oxide particles from arc welding (~10 µm) ... Coal combustion • • • ...

2013-10-31T23:59:59.000Z

420

AIRBORNE ASBESTOS ANALYSIS  

Science Conference Proceedings (OSTI)

... 5.8 Handling of test and calibration items ... JK Taylor, Quality Assurance of Chemical Measurements, Lewis Publishers, Chelsea, MI, 1987. ...

2011-09-21T23:59:59.000Z

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


421

AIRBORNE RADIATION DETECTOR  

DOE Patents (OSTI)

An ionization chamber used for measuring the radioactivity of dust present in atmospheric air is described. More particularly. the patent describes a device comprising two concentric open ended, electrically connected cylinders between which is disposed a wire electrcde. A heating source is disposed inside of the cylinder to circulate air through the space between the two cylinders by convective flow. A high voltage electric field between the wire electrcde of the electrically connected cylinder will cause ionization of the air as it passes therethrough.

Cartmell, T.R.; Gifford, J.F.

1959-08-01T23:59:59.000Z

422

Airborne particulate discriminator  

DOE Patents (OSTI)

A method and apparatus for rapid and accurate detection and discrimination of biological, radiological, and chemical particles in air. A suspect aerosol of the target particulates is treated with a taggant aerosol of ultrafine particulates. Coagulation of the taggant and target particles causes a change in fluorescent properties of the cloud, providing an indication of the presence of the target.

Creek, Kathryn Louise (San Diego, CA); Castro, Alonso (Santa Fe, NM); Gray, Perry Clayton (Los Alamos, NM)

2009-08-11T23:59:59.000Z

423

NETL: Discrete Fracture Reservoir Simulation Software  

NLE Websites -- All DOE Office Websites (Extended Search)

Discrete Fracture Reservoir Simulation FRACGENNFFLOW Shale Gas Flow Simulation Shale Gas Flow Simulation FRACGENNFFLOW, a fractured reservoir modeling software developed by the...

424

Manet simulation studies: The incredibles  

E-Print Network (OSTI)

Simulation is the research tool of choice for a majority of the mobile ad hoc network (MANET) community. However, while the use of simulation has increased, the credibility of the simulation results has decreased. To determine the state of MANET simulation studies, we surveyed the 2000-2005 proceedings of the ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). From our survey, we found significant shortfalls. We present the results of our survey in this paper. We then summarize common simulation study pitfalls found in our survey. Finally, we discuss the tools available that aid the development of rigorous simulation studies. We offer these results to the community with the hope of improving the credibility of MANET simulation-based studies. I.

Stuart Kurkowski; Tracy Camp; Michael Colagrosso

2005-01-01T23:59:59.000Z

425

Fading channel simulator  

DOE Patents (OSTI)

This invention relates to high frequency (HF) radio signal propagation through fading channels and, more particularly, to simulation of fading channels in order to characterize HF radio system performance in transmitting and receiving signals through such fading channels. Fading channel effects on a transmitted communication signal are simulated with both frequency and time variations using a channel scattering function to affect the transmitted signal. A conventional channel scattering function is converted to a series of channel realizations by multiplying the square root of the channel scattering function by a complex number of which the real and imaginary parts are each independent variables. The two-dimensional inverse-FFT of this complex-valued channel realization yields a matrix of channel coefficients that provide a complete frequency-time description of the channel. The transmitted radio signal is segmented to provide a series of transmitted signal and each segment is subject to FFT to generate a series of signal coefficient matrices. The channel coefficient matrices and signal coefficient matrices are then multiplied and subjected to inverse-FFT to output a signal representing the received affected radio signal. A variety of channel scattering functions can be used to characterize the response of a transmitter-receiver system to such atmospheric effects.

Argo, P.E.; Fitzgerald, T.J.

1991-12-31T23:59:59.000Z

426

Disens: scalable distributed sensor network simulation  

Science Conference Proceedings (OSTI)

Simulation is widely used for developing, evaluating and analyzing sensor network applications, especially when deploying a large scale sensor network remains expensive and labor intensive. However, due to its computation intensive nature, existent simulation ... Keywords: distributed simulation, sensor network, simulation

Ye Wen; Rich Wolski; Gregory Moore

2007-03-01T23:59:59.000Z

427

THERM NFRC Simulation Manual  

NLE Websites -- All DOE Office Websites (Extended Search)

/ WINDOW 6.3 / WINDOW 6.3 NFRC Simulation Manual Lawrence Berkeley National Laboratory July 2013 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product process, or service by its trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement,

428

Cellular array processing simulation  

Science Conference Proceedings (OSTI)

The cellular array processing simulation (CAPS) system is a high-level image language that runs on a multiprocessor configuration. CAPS is interpretively decoded on a conventional minicomputer with all image operation instructions executed on an array processor. CAPS was designed to be both modular and table driven so that it can be easily maintained and modified. CAPS uses the image convolution operator as one of its primitives and performs this cellular operation by decomposing it into parallel image steps. Among its features is the ability to observe the imagery in real time as a user's algorithm is executed. CAPS also contains a language processor that permits users to develop re-entrant image processing subroutines or algorithms. 4 references.

Lee, H.C.; Preston, E.W.

1981-01-01T23:59:59.000Z

429

Lattice Boltzmann Simulation Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

Boltzmann Boltzmann Simulation Optimization on Leading Multicore Platforms Selected as Best Paper in Application Track, IPDPS 2008, April 14-28, Miami, Florida, USA Samuel Williams † , Jonathan Carter , Leonid Oliker John Shalf , Katherine Yelick † CRD/NERSC, Lawrence Berkeley National Laboratory Berkeley, CA 94720 † CS Division, University of California at Berkeley, Berkeley, CA 94720 {SWWilliams, JTCarter, LOliker, JShalf, KAYelick}@lbl.gov Abstract We present an auto-tuning approach to optimize ap- plication performance on emerging multicore architec- tures. The methodology extends the idea of search- based performance optimizations, popular in linear al- gebra and FFT libraries, to application-specific com- putational kernels. Our work applies this strategy to a lattice Boltzmann application (LBMHD) that histor- ically has made poor use of scalar microprocessors

430

Advanced Simulation Capability for Environmental Management  

Multi-Process High Performance Computing Simulator Modular simulation capability for barrier and waste form degradation, multiphase flow and reactive ...

431

Quantum to Atomistic Simulations - Programmaster.org  

Science Conference Proceedings (OSTI)

Computational Modeling and Simulation of Advanced Materials for Energy Applications: Quantum to Atomistic Simulations Sponsored by: TMS/ASM: ...

432

Airborne measurements of mass, momentum, and energy fluxes for the boardman-arm regional flux experiment-1991. Preliminary data release. Technical memo  

SciTech Connect

During 2 - 19 June 1991 the Atmospheric Turbulence and Diffusion Division of NOAA measured flux densities of mass, momentum, and energy from an airplane in support of DOE's Atmospheric Radiation Measurement (ARM) program. Over 507 horizontal flux transects were completed, along with 24 vertical atmospheric profiles, during the 93 flight hours. Flux transects passed over both irrigated farmland and steppe. The report describes the variation in wind, radiation, and surface temperature, along with exchange of mass (CO2, H2O, and O3), momentum, and energy as observed along the transects. Airborne measurements are compared with those from flux towers in wheat, corn, and steppe. In general, the measurements correspond well. The largest difference occurs at the steppe tower, with stronger heat fluxes reported by the tower. This discrepancy increases as heat flux increases. The cause may be a significant vertical flux divergence or an inconsistant specification of the mean state.

Crawford, T.L.; Dobosy, R.J.; Birdwell, K.R.

1993-04-01T23:59:59.000Z

433

Mathematical model for predicting the probability of acute mortality in a human population exposed to accidentally released airborne radionuclides. Final report for Phase I  

SciTech Connect

A mathematical model was constructed for the purpose of predicting the fraction of human population which would die within 1 year of an accidental exposure to airborne radionuclides. The model is based on data from laboratory experiments with rats, dogs and baboons, and from human epidemiological data. Doses from external, whole-body irradiation and from inhaled, alpha- and beta-emitting radionuclides are calculated for several organs. The probabilities of death from radiation pneumonitis and from bone marrow irradiation are predicted from doses accumulated within 30 days of exposure to the radioactive aerosol. The model is compared with existing similar models under hypothetical exposure conditions. Suggestions for further experiments with inhaled radionuclides are included. 25 refs., 16 figs., 13 tabs.

Filipy, R.E.; Borst, F.J.; Cross, F.T.; Park, J.F.; Moss, O.R.; Roswell, R.L.; Stevens, D.L.

1980-05-01T23:59:59.000Z

434

Non-detonable explosive simulators  

DOE Patents (OSTI)

A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules. 5 figs.

Simpson, R.L.; Pruneda, C.O.

1994-11-01T23:59:59.000Z

435

Non-detonable explosive simulators  

DOE Patents (OSTI)

A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules.

Simpson, Randall L. (Livermore, CA); Pruneda, Cesar O. (Livermore, CA)

1994-01-01T23:59:59.000Z

436

NIST Standard Reference Simulation Website  

Science Conference Proceedings (OSTI)

... simulations, that can be treated similar to "standard reference data ... techniques and compiled by NIST under the Standards Reference Data Program. ...

2013-08-27T23:59:59.000Z

437

Computer interactive resistance simulator (CIRS)  

DOE Patents (OSTI)

A system for simulating the insertion of electric resistance values of either positive or negative quantity into an electric circuit and for cancelling drift errors therefrom.

Mayn, Bobby G. (Pleasanton, CA)

1976-01-01T23:59:59.000Z

438

Computational simulation of aerosol behaviour.  

E-Print Network (OSTI)

??In this thesis, computational methods have been developed for the simulation of aerosol dynamics and transport. Two different coupled aerosol-computational fluid dynamics (CFD) models are… (more)

Pyykönen, Jouni

2002-01-01T23:59:59.000Z

439

Simulation I - Programmaster.org  

Science Conference Proceedings (OSTI)

Feb 15, 2010 ... Molecular dynamics Simulation of Nucleation Process: Ramanarayan Hariharaputran1; David Wu1; 1Institute of High Performance Computing, ...

440

Logic Simulation Using Graphics Processors.  

E-Print Network (OSTI)

??Logic Simulation is widely used to verify the logical correctness of hardware designs. In this work, we present the implementation of a generic graphics processor… (more)

Perinkulam, Atchuthan S

2007-01-01T23:59:59.000Z

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


441

LAMMPS Molecular Dynamics Simulator - TMS  

Science Conference Proceedings (OSTI)

Nov 8, 2007 ... LAMMPS stands for Large-scale Atomic/Molecular Massively Parallel Simulator. LAMMPS has potentials for soft materials (biomolecules, ...

442

Real time wind turbine simulator.  

E-Print Network (OSTI)

??A novel dynamic real-time wind turbine simulator (WTS) is developed in this thesis, which is capable of reproducing dynamic behavior of real wind turbine. The… (more)

Gong, Bing

2007-01-01T23:59:59.000Z

443

Viewing Geometry Dependencies in MODIS Cloud Products  

Science Conference Proceedings (OSTI)

Characterizing the earth’s global cloud field is important for the proper assessment of the global radiation budget and hydrologic cycle. This characterization can only be achieved with satellite measurements. For complete daily coverage across ...

B. C. Maddux; S. A. Ackerman; S. Platnick

2010-09-01T23:59:59.000Z

444

Cloud detection of MODIS multispectral images  

Science Conference Proceedings (OSTI)

Methods coming from statistics and pattern recognition to estimate the cloud mask from radiance measured by visible and infrared sensors onboard satellites are gaining greater and greater consideration for their ability to properly exploit the ...

Loredana Murino; Umberto Amato; Maria Francesca Carfora; Anestis Antoniadis; Bormin Huang; W. Paul Menzel; Carmine Serio

445

ORNL DAAC MODIS Subsetting and Visualization tool  

NLE Websites -- All DOE Office Websites (Extended Search)

Architecture: WebGIS System Architecture: ESRI ArcIMS 9.3 Image Server Extract Server Query Server Minnesota Mapserver 5.2.0 WCS Server v1.0.0 MS SQL Server 2005 ESRI ArcSDE 9.3...

446

Occupancy Simulation Schedule Appendix C -Occupancy Simulation Schedule  

E-Print Network (OSTI)

into the electrical panel for run times commensurate with identified use profiles. The profiles enabled sought Figure C.1 and Figure C.2 present the load simulation and occupancy schedules for the lab homes highly insulating windows demonstration. The bases for occupancy simulation were data and analysis developed

447

Foam drilling simulator  

E-Print Network (OSTI)

Although the use of compressible drilling fluids is experiencing growth, the flow behavior and stability properties of drilling foams are more complicated than those of conventional fluids. In contrast with conventional mud, the physical properties of foam change along the wellbore. Foam physical and thermal properties are strongly affected by pressure and temperature. Many problems associated with field applications still exist, and a precise characterization of the rheological properties of these complex systems needs to be performed. The accurate determination of the foam properties in circulating wells helps to achieve better estimation of foam rheology and pressure. A computer code is developed to process the data and closely simulate the pressure during drilling a well. The model also offers a detailed discussion of many aspects of foam drilling operations and enables the user to generate many comparative graphs and tables. The effects of some important parameters such as: back-pressure, rate of penetration, cuttings concentration, cuttings size, and formation water influx on pressure, injection rate, and velocity are presented in tabular and graphical form. A discretized heat transfer model is formulated with an energy balance on a control volume in the flowing fluid. The finite difference model (FDM) is used to write the governing heat transfer equations in discretized form. A detailed discussion on the determination of heat transfer coefficients and the solution approach is presented. Additional research is required to analyze the foam heat transfer coefficient and thermal conductivity.

Paknejad, Amir Saman

2005-12-01T23:59:59.000Z

448

Simulating nanoscale semiconductor devices.  

SciTech Connect

The next generation of electronic devices will be developed at the nanoscale and molecular level, where quantum mechanical effects are observed. These effects must be accounted for in the design process for such small devices. One prototypical nanoscale semiconductor device under investigation is a resonant tunneling diode (RTD). Scientists are hopeful the quantum tunneling effects present in an RTD can be exploited to induce and sustain THz frequency current oscillations. To simulate the electron transport within the RTD, the Wigner-Poisson equations are used. These equations describe the time evolution of the electrons distribution within the device. In this paper, this model and a parameter study using this model will be presented. The parameter study involves calculating the steady-state current output from the RTD as a function of an applied voltage drop across the RTD and also calculating the stability of that solution. To implement the parameter study, the computational model was connected to LOCA (Library of Continuation Algorithms), a part of Sandia National Laboratories parallel solver project, Trilinos. Numerical results will be presented.

Salinger, Andrew Gerhard; Zhao, P. (North Carolina State University, Raleigh, NC); Woolard, D. L. (U. S. Army Research Laboratory, NC); Kelley, C. Tim (North Carolina State University, Raleigh, NC); Lasater, Matthew S. (North Carolina State University, Raleigh, NC)

2005-03-01T23:59:59.000Z

449

TERAPIXEL IMAGING OF COSMOLOGICAL SIMULATIONS  

SciTech Connect

The increasing size of cosmological simulations has led to the need for new visualization techniques. We focus on smoothed particle hydrodynamic (SPH) simulations run with the GADGET code and describe methods for visually accessing the entire simulation at full resolution. The simulation snapshots are rastered and processed on supercomputers into images that are ready to be accessed through a Web interface (GigaPan). This allows any scientist with a Web browser to interactively explore simulation data sets in both spatial and temporal dimensions and data sets which in their native format can be hundreds of terabytes in size or more. We present two examples, the first a static terapixel image of the MassiveBlack simulation, a P-GADGET SPH simulation with 65 billion particles, and the second an interactively zoomable animation of a different simulation with more than 1000 frames, each a gigapixel in size. Both are available for public access through the GigaPan Web interface. We also make our imaging software publicly available.

Feng Yu; Croft, Rupert A. C.; Di Matteo, Tiziana; Khandai, Nishikanta [Bruce and Astrid McWilliams Center for Cosmology, Carnegie Mellon University, Pittsburgh, PA 15213 (United States); Sargent, Randy; Nourbakhsh, Illah; Dille, Paul; Bartley, Chris [Robotics Institute, Carnegie Mellon University, Pittsburgh, PA 15213 (United States); Springel, Volker [Heidelberger Institut fuer Theoretische Studien, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg (Germany); Jana, Anirban [Pittsburgh Supercomputing Center, Pittsburgh, PA 15213 (United States); Gardner, Jeffrey, E-mail: yfeng1@andrew.cmu.edu [Physics Department, University of Washington, Seattle, WA 98195 (United States)

2011-12-01T23:59:59.000Z

450

BEST: Biochemical Engineering Simulation Technology  

DOE Green Energy (OSTI)

The idea of developing a process simulator that can describe biochemical engineering (a relatively new technology area) was formulated at the National Renewable Energy Laboratory (NREL) during the late 1980s. The initial plan was to build a consortium of industrial and U.S. Department of Energy (DOE) partners to enhance a commercial simulator with biochemical unit operations. DOE supported this effort; however, before the consortium was established, the process simulator industry changed considerably. Work on the first phase of implementing various fermentation reactors into the chemical process simulator, ASPEN/SP-BEST, is complete. This report will focus on those developments. Simulation Sciences, Inc. (SimSci) no longer supports ASPEN/SP, and Aspen Technology, Inc. (AspenTech) has developed an add-on to its ASPEN PLUS (also called BioProcess Simulator [BPS]). This report will also explain the similarities and differences between BEST and BPS. ASPEN, developed by the Massachusetts Institute of Technology for DOE in the late 1970s, is still the state-of-the-art chemical process simulator. It was selected as the only simulator with the potential to be easily expanded into the biochemical area. ASPEN/SP, commercially sold by SimSci, was selected for the BEST work. SimSci completed work on batch, fed-batch, and continuous fermentation reactors in 1993, just as it announced it would no longer commercially support the complete ASPEN/SP product. BEST was left without a basic support program. Luckily, during this same time frame, AspenTech was developing a biochemical simulator with its version of ASPEN (ASPEN PLUS), which incorporates most BEST concepts. The future of BEST will involve developing physical property data and models appropriate to biochemical systems that are necessary for good biochemical process design.

Not Available

1996-01-01T23:59:59.000Z

451

Integrating Remote Sensing Data with WRF for Improved Simulations of Oasis Effects on Local Weather Processes over an Arid Region in Northwestern China  

Science Conference Proceedings (OSTI)

Land use/cover types derived by satellite remote sensing data from the Earth Observing System Moderate Resolution Imaging Spectroradiometer (MODIS) were used to replace the U.S. Geological Survey (USGS) data in the Weather Research and Forecasting ...

Xiaohang Wen; Shihua Lu; Jiming Jin

2012-04-01T23:59:59.000Z

452

Hybrid simulation models - When, Why, How?  

Science Conference Proceedings (OSTI)

Agent-Based Modeling and Simulation (ABMS) and System Dynamics (SD) are two popular simulation paradigms. Despite their common goal, these simulation methods are rarely combined and there has been a very low amount of joint research in these fields. ... Keywords: Agent-Based Modeling and Simulation, Artificial intelligence, Expert Systems, Hybrid simulation models, System Dynamics

Lauri Lättilä; Per Hilletofth; Bishan Lin

2010-12-01T23:59:59.000Z

453

Mixed-Technology System-Level Simulation  

Science Conference Proceedings (OSTI)

This paper describes a computationally efficient method to simulate mixed-domain systems under the requirements of a system-level framework. The approach is the combined use of Modified Nodal Analysis (MNA) for the representation of a mixed-technology ... Keywords: MEM simulation, microsystem modeling and simulation, modified nodal analysis (MNA), optical MEM CAD tool, optoelectronic simulation, piecewise linear simulation (PWL)

J. A. Martinez; T. P. Kurzweg; S. P. Levitan; P. J. Marchand; D. M. Chiarulli

2001-10-01T23:59:59.000Z

454

Validation of a Geothermal Simulator  

DOE Green Energy (OSTI)

A geothermal simulator, TETRAD, is validated against the Stanford Geothermal Problem Set. The governing equations, formulation, and solution technique employed by TETRAD are first outlined. Each problem in the Stanford Problem Set is then discussed in detail, and results from the simulations are presented. The results obtained using TETRAD are compared against several other geothermal simulators. Favorable comparison between results indicates that TETRAD is capable of solving the highly non-linear equations describing the flow of mass and energy in porous media. This validation exercise allows for the use of TETRAD in studying geothermal problems with a high degree of confidence.

Shook, G.M.; Faulder, D.D.

1991-10-01T23:59:59.000Z

455

Numerical wind speed simulation model  

DOE Green Energy (OSTI)

A relatively simple stochastic model for simulating wind speed time series that can be used as an alternative to time series from representative locations is described in this report. The model incorporates systematic seasonal variation of the mean wind, its standard deviation, and the correlation speeds. It also incorporates systematic diurnal variation of the mean speed and standard deviation. To demonstrate the model capabilities, simulations were made using model parameters derived from data collected at the Hanford Meteorology Station, and results of analysis of simulated and actual data were compared.

Ramsdell, J.V.; Athey, G.F.; Ballinger, M.Y.

1981-09-01T23:59:59.000Z

456

Applications of agent based simulation  

Science Conference Proceedings (OSTI)

This paper provides a survey and analysis of applications of Agent Based Simulation (ABS). A framework for describing and assessing the applications is presented and systematically applied. A general conclusion from the study is that even if ABS seems ...

Paul Davidsson; Johan Holmgren; Hans Kyhlbäck; Dawit Mengistu; Marie Persson

2006-05-01T23:59:59.000Z

457

Numerical Simulations of Maritime Frontogenesis  

Science Conference Proceedings (OSTI)

A hydrostatic primitive equation model initialized in a highly baroclinically unstable state was used to simulate maritime cyclogenesis and frontogenesis. In order to identify boundary layer physical processes important in maritime frontogenesis, ...

William T. Thompson; R. T. Williams

1997-01-01T23:59:59.000Z

458

Physics and detector simulation requirements  

Science Conference Proceedings (OSTI)

‘‘This document describes the computing environment needed to meet the requirements for high energy physics Monte Carlo Calculations for the simulation of Superconducting Super Collider Laboratory physics and detectors.’’ (AIP)

Computer Acquisition Working Group

1990-01-01T23:59:59.000Z

459

Monte Carlo Simulation of Solidification  

Science Conference Proceedings (OSTI)

m>= (2+ cod).( l- cose)2. 4. (3). In the simulation, it is assumed that the nucleation in a cell (iJ) would not take place until the accumulation of nucleation (Ni) ...

460

Computer Simulation Center in Internet  

E-Print Network (OSTI)

The general description of infrastructure and content of SciShop.ru computer simulation center is given. This resource is a new form of knowledge generation and remote education using modern Cloud Computing technologies.

Tarnavsky, G A

2011-01-01T23:59:59.000Z

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


461

Simulation aids cogeneration system analysis  

Science Conference Proceedings (OSTI)

Cogeneration systems using gas turbines and heat-recovery steam generators (HRSGs) are widely used in chemical process industries (CPI) plants. Because these plants are quite expensive and the HRSG is an important part of the system, it is prudent to analyze the heat-recovery system or simulate its performance well in advance of finalizing plant specifications. Simulation is a method of predicting the performance of the HRSG under different operating modes and gas and steam conditions without physically designing the equipment. Such a study will provide the engineer with valuable information about the HRSG and its performance capabilities. The simulation results could influence the choice of steam system parameters and the selection of the steam or gas turbine. In addition, one may also obtain information about the performance of the HRSG and the cogeneration system. This article explains what HRSG simulation is and the basic methodology. Its applications are then illustrated through several examples.

Ganapathy, V.

1993-10-01T23:59:59.000Z

462

Simulation data as data streams  

Science Conference Proceedings (OSTI)

Computational or scientific simulations are increasingly being applied to solve a variety of scientific problems. Domains such as astrophysics, engineering, chemistry, biology, and environmental studies are benefiting from this important capability. ...

Ghaleb Abdulla; Terence Critchlow; William Arrighi

2004-03-01T23:59:59.000Z

463

Factor Separation in Numerical Simulations  

Science Conference Proceedings (OSTI)

A simple method is developed for computing the interactions among various factors influencing the atmospheric circulations. It is shown how numerical simulations can be utilized to obtain the pure contribution of any factor to any predicted field,...

U. Stein; P. Alpert

1993-07-01T23:59:59.000Z

464

Robust simulation of lamprey tracking  

Science Conference Proceedings (OSTI)

Biologically realistic computer simulation of vertebrates is a challenging problem with exciting applications in computer graphics and robotics. Once the mechanics of locomotion are available it is interesting to mediate this locomotion with higher level ...

Matthew Beauregard; Paul J. Kennedy

2006-09-01T23:59:59.000Z

465

Catching Carbon with Computer Simulations  

NLE Websites -- All DOE Office Websites (Extended Search)

CRD and Material Sciences Researchers Receive 2 Million to Develop Efficient Carbon Capture Simulation Tools Contact: Linda Vu, lvu@lbl.gov , 510-495-2402 Share September 30,...

466

Confidence in ASCI scientific simulations  

SciTech Connect

The US Department of Energy`s (DOE) Accelerated Strategic Computing Initiative (ASCI) program calls for the development of high end computing and advanced application simulations as one component of a program to eliminate reliance upon nuclear testing in the US nuclear weapons program. This paper presents results from the ASCI program`s examination of needs for focused validation and verification (V and V). These V and V activities will ensure that 100 TeraOP-scale ASCI simulation code development projects apply the appropriate means to achieve high confidence in the use of simulations for stockpile assessment and certification. The authors begin with an examination of the roles for model development and validation in the traditional scientific method. The traditional view is that the scientific method has two foundations, experimental and theoretical. While the traditional scientific method does not acknowledge the role for computing and simulation, this examination establishes a foundation for the extension of the traditional processes to include verification and scientific software development that results in the notional framework known as Sargent`s Framework. This framework elucidates the relationships between the processes of scientific model development, computational model verification and simulation validation. This paper presents a discussion of the methodologies and practices that the ASCI program will use to establish confidence in large-scale scientific simulations. While the effort for a focused program in V and V is just getting started, the ASCI program has been underway for a couple of years. The authors discuss some V and V activities and preliminary results from the ALEGRA simulation code that is under development for ASCI. The breadth of physical phenomena and the advanced computational algorithms that are employed by ALEGRA make it a subject for V and V that should typify what is required for many ASCI simulations.

Ang, J.A.; Trucano, T.G. [Sandia National Labs., Albuquerque, NM (United States); Luginbuhl, D.R. [Dept. of Energy, Washington, DC (United States)

1998-06-01T23:59:59.000Z

467

Proceedings of the Winter Simulation Conference  

Science Conference Proceedings (OSTI)

Welcome to the 2012 Winter Simulation Conference (WSC), recognized as the premiere international conference for simulation professionals in discrete and combined discrete-continuous simulation. Our venue of Berlin this year continues the trend of new ...

Oliver Rose; Adelinde M. Uhrmacher

2012-12-01T23:59:59.000Z

468

System dynamics simulation of the telecom industry  

E-Print Network (OSTI)

The primary goal of this research effort was to integrate several pieces of relatively simple dynamics simulations into a full blown system dynamics simulation of the telecom industry. The economic simulation model was ...

Shapira, Gil, 1971-

2004-01-01T23:59:59.000Z

469

Efficient simulation-based discrete optimization  

Science Conference Proceedings (OSTI)

In many practical applications of simulation it is desirable to optimize the levels of integer or binary variables that are inputs for the simulation model. In these cases, the objective function must often be estimated through an expensive simulation ...

Seth D. Guikema; Rachel A. Davidson; Zehra Ça?nan

2004-12-01T23:59:59.000Z

470

Effects of overburden, biomass and atmospheric inversions on energy and angular distributions of gamma rays from U, K, Th, and airborne radon sources. Final report  

SciTech Connect

This report describes a set of radiation transport calculations that were run with the AHISN S/sub n/ discrete ordinates code and a point kernel code to determine the energy, polar angle and height in air distributions of the total and direct gamma-ray flux densities from: (1) uranium sources of 3.2, 200 and 800 ppM in a sandstone orebody covered with biomass densities of 0, 10.2, 20.4, 51.0 and 102.0 kg/m/sup 2/; (2) thorium sources of 12, 25 and 80 ppM in a sandstone ore body covered with biomass densities of 0, 10.2, 20.4, 51.0 and 102.0 kg/m/sup 2/; (3) potassium source (2.5 wt %) in a sandstone ore body covered with biomass densities of 0, 10.2, 20.4, 51.0 and 102.0 kg/m/sup 2/; (4) constant airborne source with height for no inversion and for inversion layer heights of 65.22, 260.32 and 458.43 m; (5) exponentially decreasing airborne source for no inversion and inversion layer heights of 65.22, 260.32 and 458.43 m; (6) 3.2 ppM uranium source in overburden layers of 10.266, 17.110, 26.399 and 32.509 cm thick; (7) 12 ppM thorium source in overburden layers of 10.266, 17.110, 26.399 and 32.509 cm; (8) 2.5 wt % of potassium in overburden layers of 10.266, 17.110, 26.399 and 32.509 cm thick; and (9) 3.2 ppM, 200 ppM, and 800 ppM uranium source in sandstone orebody covered with overburden thicknesses of 10.266, 17.110, 26.399 and 32.509 cm. Gamma-ray emission from the decay of natural uranium, thorium, radon, and potassium are given in a 45-energy group structure applicable to the energy windows used to map the potential uranium ore reserves.

Rubin, R.M.; Leggett, D.; Wells, M.B.

1980-12-01T23:59:59.000Z

471

An advanced fuel cell simulator  

E-Print Network (OSTI)

Fuel cell power generation systems provide a clean alternative to the conventional fossil fuel based systems. Fuel cell systems have a high e?ciency and use easily available hydrocarbons like methane. Moreover, since the by-product is water, they have a very low environmental impact. The fuel cell system consists of several subsystems requiring a lot of e?ort from engineers in diverse areas. Fuel cell simulators can provide a convenient and economic alternative for testing the electrical subsystems such as converters and inverters. This thesis proposes a low-cost and an easy-to-use fuel cell simulator using a programmable DC supply along with a control module written in LabVIEW. This simulator reproduces the electrical characteristics of a 5kW solid oxide fuel cell (SOFC) stack under various operating conditions. The experimental results indicate that the proposed simulator closely matches the voltage-current characteristic of the SOFC system under varying load conditions. E?ects of non-electrical parameters like hydrogen ?ow rate are also modeled and these parameters are taken as dynamic inputs from the user. The simulator is customizable through a graphical user interface and allows the user to model other types of fuel cells with the respective voltage-current data. The simulator provides an inexpensive and accurate representation of a solid oxide fuel cell under steady state and transient conditions and can replace an actual fuel cell during testing of power conditioning equipment.

Acharya, Prabha Ramchandra

2004-08-01T23:59:59.000Z

472

Building Technologies Office: House Simulation Protocols Report  

NLE Websites -- All DOE Office Websites (Extended Search)

House Simulation House Simulation Protocols Report to someone by E-mail Share Building Technologies Office: House Simulation Protocols Report on Facebook Tweet about Building Technologies Office: House Simulation Protocols Report on Twitter Bookmark Building Technologies Office: House Simulation Protocols Report on Google Bookmark Building Technologies Office: House Simulation Protocols Report on Delicious Rank Building Technologies Office: House Simulation Protocols Report on Digg Find More places to share Building Technologies Office: House Simulation Protocols Report on AddThis.com... About Take Action to Save Energy Partner With DOE Activities Solar Decathlon Building America Research Innovations Research Tools Building Science Education Climate-Specific Guidance Solution Center

473

MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUS  

E-Print Network (OSTI)

LBNL-XXXXX MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUSof California. MAPPING HVAC SYSTEMS FOR SIMULATION INpresent a conventional view of HVAC systems to the user, and

Basarkar, Mangesh

2013-01-01T23:59:59.000Z

474

Theory, Modeling & Simulation | More Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Theory, Modeling and Simulation SHARE Theory, Modeling and Simulation ORNL conducts a broad range of theoretical research in the physical sciences with over 60 staff members and...

475

Theory, Modeling & Simulation | More Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Materials Theory and Simulation SHARE Materials Theory and Simulation ORNL conducts a broad range of theoretical research in the physical sciences with over 60 staff members and...

476

Zero Power Reactor simulation | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Zero Power Reactor simulation Share Description Ever wanted to see a nuclear reactor core in action? Here's a detailed simulation of the Zero Power Reactor experiment, run by...

477

Computer-Simulation-Assisted Lean Manufacturing Training.  

E-Print Network (OSTI)

??This thesis assesses the potential of using computer simulation to aid existing lean manufacturing training methods such as lecture and live simulation. An investigation of… (more)

Wang, Luoding 1970-

2005-01-01T23:59:59.000Z

478

Simulating Complex Window Systems using BSDF Data  

E-Print Network (OSTI)

Simulating Complex Window Systems using BSDF Data MariaJune 2009 Simulating Complex Window Systems using BSDF Datathe performance of conventional window systems. Complex

Konstantoglou, Maria

2011-01-01T23:59:59.000Z

479

Monte Carlo Simulations for Homeland Security Using Anthropomorphic Phantoms  

Science Conference Proceedings (OSTI)

A radiological dispersion device (RDD) is a device which deliberately releases radioactive material for the purpose of causing terror or harm. In the event that a dirty bomb is detonated, there may be airborne radioactive material that can be inhaled as well as settle on an individuals leading to external contamination.

Burns, Kimberly A.

2008-01-01T23:59:59.000Z

480

A Simulator for Timed CSP  

E-Print Network (OSTI)

Time is an integral aspect of computer systems. It is essential for modelling a system’s performance, but may also affect its safety or security. Timed CSP [Sch00] conservatively extends the process algebra CSP with timed primitives, where real numbers ? 0 model how time passes with reference to a single, conceptually global, clock. While there have been approaches for model checking Timed CSP ([Sch00, DHSZ06]), to the best of our knowledge we are the first to present a simulator for Timed CSP. Here, we restrict time to rational values only. Theoretically, this limits the expressibility of the language. Practically, this limitation turns out to be negligible (for instance all examples of Schneider’s book [Sch00] can be dealt with in our simulator). The simulator is the outcome of an undergraduate project at Swansea University [Dra11]. Our Timed CSP simulator extends the open source tool ProB [Leu]. ProB’s CSP simulator works as follows: The CSP specification is analyzed by a parser (written in Haskell) and translated to a representation in Prolog. A CSP Interpreter (in Prolog) stores the “firing rules” of CSP’s operational semantics. The Simulator (also in Prolog) determines the actions available and the resultant states. A GUI (written in Tcl/Tk) allows the user to interact with the Simulator. Timed CSP is closed under rational time [DNR11]. Consider, for example, the following firing rule ( t ? stands for a timed transition of duration t): P d? ? P ? (P ?d Q) d?

Marc Dragon; Andy Gimblett; Markus Roggenbach; Jens Bendisposto; Cliff Jones; Michael Leuschel; Er Romanovsky; Tiziana Margaria; Julia Padberg; Gabriele Taentzer; Marc Dragon; Andy Gimblett; Markus Roggenbach

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis airborne simulator" from the National Library of EnergyBeta (NLEBeta).
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481

Operation Redwing-Project 6. 4. Airborne antennas and phototubes for determination of nuclear-weapon yield. Report for May-July 1956  

SciTech Connect

Airborne equipment was designed for determining the location and yield of a nuclear detonation. This equipment determines yield from a measurement of the interval between the time of the burst and the time of the second peak in the thermal-radiation intensity curve. Flush-mounted ferrite-core magnetic loop antennas for use in detecting the electromagnetic signal and thus fixing the time of the burst, performed successfully during Operation Redwing. Two kinds of photocubes for detecting the second thermal peak were tested and were found about equally satisfactory. The method selected for yield determination gave results accurate + or - 16% for five shots. Detailed study of the data showed that the electromagnetic signal, consisting of a direct pulse followed by a series of ionosphere-reflected sky waves, could be used in many waves to give information concerning the detonation and the ionsphere. From the time intervals between the ground wave and sky waves, it was foun possible to compute both the distance between and receiver and the height of the reflecting ionosphere layer.

Waters, A.J.; Clapp, R.E.

1985-04-01T23:59:59.000Z

482

Stochastic models: theory and simulation.  

SciTech Connect

Many problems in applied science and engineering involve physical phenomena that behave randomly in time and/or space. Examples are diverse and include turbulent flow over an aircraft wing, Earth climatology, material microstructure, and the financial markets. Mathematical models for these random phenomena are referred to as stochastic processes and/or random fields, and Monte Carlo simulation is the only general-purpose tool for solving problems of this type. The use of Monte Carlo simulation requires methods and algorithms to generate samples of the appropriate stochastic model; these samples then become inputs and/or boundary conditions to established deterministic simulation codes. While numerous algorithms and tools currently exist to generate samples of simple random variables and vectors, no cohesive simulation tool yet exists for generating samples of stochastic processes and/or random fields. There are two objectives of this report. First, we provide some theoretical background on stochastic processes and random fields that can be used to model phenomena that are random in space and/or time. Second, we provide simple algorithms that can be used to generate independent samples of general stochastic models. The theory and simulation of random variables and vectors is also reviewed for completeness.

Field, Richard V., Jr.

2008-03-01T23:59:59.000Z

483

Radiation in molecular dynamic simulations  

DOE Green Energy (OSTI)

Hot dense radiative (HDR) plasmas common to Inertial Confinement Fusion (ICF) and stellar interiors have high temperature (a few hundred eV to tens of keV), high density (tens to hundreds of g/cc) and high pressure (hundreds of Megabars to thousands of Gigabars). Typically, such plasmas undergo collisional, radiative, atomic and possibly thermonuclear processes. In order to describe HDR plasmas, computational physicists in ICF and astrophysics use atomic-scale microphysical models implemented in various simulation codes. Experimental validation of the models used to describe HDR plasmas are difficult to perform. Direct Numerical Simulation (DNS) of the many-body interactions of plasmas is a promising approach to model validation but, previous work either relies on the collisionless approximation or ignores radiation. We present a new numerical simulation technique to address a currently unsolved problem: the extension of molecular dynamics to collisional plasmas including emission and absorption of radiation. The new technique passes a key test: it relaxes to a blackbody spectrum for a plasma in local thermodynamic equilibrium. This new tool also provides a method for assessing the accuracy of energy and momentum exchange models in hot dense plasmas. As an example, we simulate the evolution of non-equilibrium electron, ion, and radiation temperatures for a hydrogen plasma using the new molecular dynamics simulation capability.

Glosli, J; Graziani, F; More, R; Murillo, M; Streitz, F; Surh, M

2008-10-13T23:59:59.000Z

484

Simulator for Microlens Planet Surveys  

E-Print Network (OSTI)

We summarize the status of a computer simulator for microlens planet surveys. The simulator generates synthetic light curves of microlensing events observed with specified networks of telescopes over specified periods of time. Particular attention is paid to models for sky brightness and seeing, calibrated by fitting to data from the OGLE survey and RoboNet observations in 2011. Time intervals during which events are observable are identified by accounting for positions of the Sun and the Moon, and other restrictions on telescope pointing. Simulated observations are then generated for an algorithm that adjusts target priorities in real time with the aim of maximizing planet detection zone area summed over all the available events. The exoplanet detection capability of observations was compared for several telescopes.

Ipatov, Sergei I; Alsubai, Khalid A; Bramich, Daniel M; Dominik, Martin; Hundertmark, Markus P G; Liebig, Christine; Snodgrass, Colin D B; Street, Rachel A; Tsapras, Yiannis

2013-01-01T23:59:59.000Z

485

Simulating chemistry using quantum computers  

E-Print Network (OSTI)

The difficulty of simulating quantum systems, well-known to quantum chemists, prompted the idea of quantum computation. One can avoid the steep scaling associated with the exact simulation of increasingly large quantum systems on conventional computers, by mapping the quantum system to another, more controllable one. In this review, we discuss to what extent the ideas in quantum computation, now a well-established field, have been applied to chemical problems. We describe algorithms that achieve significant advantages for the electronic-structure problem, the simulation of chemical dynamics, protein folding, and other tasks. Although theory is still ahead of experiment, we outline recent advances that have led to the first chemical calculations on small quantum information processors.

Ivan Kassal; James D. Whitfield; Alejandro Perdomo-Ortiz; Man-Hong Yung; Alán Aspuru-Guzik

2010-07-15T23:59:59.000Z

486

Heat Recovery Steam Generator Simulation  

E-Print Network (OSTI)

The paper discusses the applications of Heat Recovery Steam Generator Simulation. Consultants, plant engineers and plant developers can evaluate the steam side performance of HRSGs and arrive at the optimum system which matches the needs of the process plant, cogeneration or combined cycle plant. There is no need to design the HRSG per se and hence simulation is a valuable tool for anyone interested in evaluating the HRSG performance even before it is designed. It can also save a lot of time for specification writers as they need not guess how the steam side performance will vary with different gas/steam parameters. A few examples are given to show how simulation methods can be applied to real life problems.

Ganapathy, V.

1993-03-01T23:59:59.000Z

487

Efficient Mushroom Cloud Simulation on GPU  

Science Conference Proceedings (OSTI)

In this paper, we present a method to simulate the Mushroom Cloud efficient on GPU using advanced particle system, and our particle system is a state-preserving simulation system. We provide the visual-only model of Mushroom Cloud and we divide the Mushroom ... Keywords: Floating Point Textures, GPU (Graphics Processing Unit), Mushroom Cloud simulation, particle system, state-preserving simulation

Xingquan Cai; Jinhong Li; Zhitong Su

2008-06-01T23:59:59.000Z

488

JILA Researchers Discover Atomic Clock Can Simulate ...  

Science Conference Proceedings (OSTI)

... Artist's conception of interactions among atoms in JILA's strontium atomic clock during a quantum simulation experiment. ...

2013-08-20T23:59:59.000Z

489

Measurement of simulation speed: its relation to simulation accuracy  

E-Print Network (OSTI)

mainly by the time step. For non-spiking neurons, this means not larger than 100 usec for a reasonable physiological simulations we don't need better accuracy than 2-5%, time steps on the order of 100 usec

Pennsylvania, University of

490

Water simulation of sodium reactors  

Science Conference Proceedings (OSTI)

The thermal hydraulic simulation of a large sodium reactor by a scaled water model is examined. The Richardson Number, friction coefficient and the Peclet Number can be closely matched with the water system at full power and the similarity is retained for buoyancy driven flows. The simulation of thermal-hydraulic conditions in a reactor vessel provided by a scaled water experiment is better than that by a scaled sodium test. Results from a correctly scaled water test can be tentatively extrapolated to a full size sodium system.

Grewal, S.S.; Gluekler, E.L.

1981-06-28T23:59:59.000Z

491

Simulation-assisted inductive learning  

Science Conference Proceedings (OSTI)

Learning by induction can require a large number of training examples. We show the power of using a simulator to generate training data and test data in learning rules for an expert system. The induction program is RL, a simplified version of Meta-DENDRAL. The expert system is ABLE, a rule-based system that identifies and located errors in particle beam lines used in high energy physics. A simulator of beam lines allowed forming and testing rules on sufficient numbers of cases that ABLE's performance is demonstrably accurate and precise. 13 refs., 2 figs.

Buchanan, B.G.; Sullivan, J.; Cheng, Tze-Pin; Clearwater, S.H.

1988-01-01T23:59:59.000Z

492

Universal digital quantum simulation with trapped ions  

E-Print Network (OSTI)

A digital quantum simulator is an envisioned quantum device that can be pro- grammed to efficiently simulate any other local system. We demonstrate and investigate the digital approach to quantum simulation in a system of trapped ions. Using sequences of up to 100 gates and 6 qubits, the full time dynamics of a range of spin systems are digitally simulated. Interactions beyond those naturally present in our simulator are accurately reproduced and quantitative bounds are provided for the overall simulation quality. Our results demon- strate the key principles of digital quantum simulation and provide evidence that the level of control required for a full-scale device is within reach.

B. P. Lanyon; C. Hempel; D. Nigg; M. Müller; R. Gerritsma; F. Zähringer; P. Schindler; J. T. Barreiro; M. Rambach; G. Kirchmair; M. Hennrich; P. Zoller; R. Blatt; C. F. Roos

2011-09-07T23:59:59.000Z

493

An Interactive Simulation Framework for Burning Objects  

E-Print Network (OSTI)

We present a simulation framework to integrate several aspects of the combustion and burning process in a unified and modular manner. A simple three gas flame model is used to simulate a combustion process, while air motion is simulated as a single moving fluid. Solid objects inside the simulation domain can catch fire and start burning. Heat information is transferred from the fluid simulator to a solid simulator, while the solid simulator injects fuel into the fluid simulation. We also present a simple yet effective method for modeling of object decomposition under combustion using level set methods. The interaction between modules is presented as well as a discussion of fluid-solid coupling. All simulation modules run together at interactive rates, enabling the user to tweak the simulation parameters and setup for desired behavior 1. 1

Zeki Melek; John Keyser

2005-01-01T23:59:59.000Z

494

Rainout assessment: the ACRA system and summaries of simulation results. [Computer systems to estimate threats from precipitation scavenging of radioactive debris clouds from nuclear weapons  

SciTech Connect

A generalized, three-dimensional, integrated computer code system was developed to estimate collateral-damage threats from precipitation-scavenging (rainout) of airborne debris-clouds from defensive tactical nuclear engagements. This code system, called ACRA for Atmospheric-Contaminant Rainout Assessment, is based on Monte Carlo statistical simulation methods that allow realistic, unbiased simulations of probabilistic storm, wind, and precipitation fields that determine actual magnitudes and probabilities of rainout threats. Detailed models (or data bases) are included for synoptic-scale storm and wind fields; debris transport and dispersal (with the roles of complex flow fields, time-dependent diffusion, and multidimensional shear effects accounted for automatically); microscopic debris-precipitation interactions and scavenging probabilities; air-to-ground debris transport; local demographic features, for assessing actual threats to populations; and nonlinear effects accumulations from multishot scenarios. We simulated several hundred representative shots for West European scenarios and climates to study single-shot and multishot sensitivities of rainout effects to variations in pertinent physical variables.

Watson, C.W.; Barr, S.; Allenson, R.E.

1977-09-01T23:59:59.000Z

495

Observations and Model Simulations of Transport and Precipitation Development in a Seeded Cumulus Congestus Cloud  

Science Conference Proceedings (OSTI)

Observations made by three instrumented aircraft, a Doppler radar, and other data sources were used to follow the initiation and development of precipitation in a small cumulus congestus cloud. The cloud was seeded at its base using an airborne ...

Michael W. Huston; Andrew G. Detwiler; Fred J. Kopp; Jeffrey L. Stith

1991-10-01T23:59:59.000Z

496

Turbulent Mixing Processes in Atmospheric Bores and Solitary Waves Deduced from Profiling Systems and Numerical Simulation  

Science Conference Proceedings (OSTI)

Families of solitary waves (“solitons”) associated with two atmospheric bores on the same day were observed by an unprecedented number of ground-based and airborne profiling systems during the International H2O Project (IHOP). In addition, a very ...

Steven E. Koch; Wayne Feltz; Frédéric Fabry; Mariusz Pagowski; Bart Geerts; Kristopher M. Bedka; David O. Miller; James W. Wilson

2008-04-01T23:59:59.000Z

497

Numerical Simulations of Black Holes  

E-Print Network (OSTI)

Numerical Simulations of Black Holes 26 Aug 2009 Frank Herrmann (fherrman@umd.edu) Department · merger of compact objects Much more than just black hole evolutions · Formulations · Hyperboloidal)/2.0; . . . high arithmetic intensity Operator Number of times used 12,961 + 5,398 - 3,438 / 69 14 #12;Black Hole

Maryland at College Park, University of

498

Particle simulations of space weather  

Science Conference Proceedings (OSTI)

We review the application of particle simulation techniques to the full kinetic study of space weather events. We focus especially on the methods designed to overcome the difficulties created by the tremendous range of time and space scales present in ... Keywords: Adaptive, Implicit, Particle-in-cell, Space weather

Giovanni Lapenta

2012-02-01T23:59:59.000Z

499

Simulation of Shot Peen Forming  

Science Conference Proceedings (OSTI)

Figure: ...balls, 4.0 mm diam, v B =6.1 m/s; stochastically distributed shot impacts; control of kinetic energy of single impacts with calculation of the contact, three-dimensional mesh; fine discretization in the middle of the sample; elastic-plastic material behaviour. (a) Before the simulation. (b) After the...

500

Xyce parallel electronic simulator design.  

Science Conference Proceedings (OSTI)

This document is the Xyce Circuit Simulator developer guide. Xyce has been designed from the 'ground up' to be a SPICE-compatible, distributed memory parallel circuit simulator. While it is in many respects a research code, Xyce is intended to be a production simulator. As such, having software quality engineering (SQE) procedures in place to insure a high level of code quality and robustness are essential. Version control, issue tracking customer support, C++ style guildlines and the Xyce release process are all described. The Xyce Parallel Electronic Simulator has been under development at Sandia since 1999. Historically, Xyce has mostly been funded by ASC, the original focus of Xyce development has primarily been related to circuits for nuclear weapons. However, this has not been the only focus and it is expected that the project will diversify. Like many ASC projects, Xyce is a group development effort, which involves a number of researchers, engineers, scientists, mathmaticians and computer scientists. In addition to diversity of background, it is to be expected on long term projects for there to be a certain amount of staff turnover, as people move on to different projects. As a result, it is very important that the project maintain high software quality standards. The point of this document is to formally document a number of the software quality practices followed by the Xyce team in one place. Also, it is hoped that this document will be a good source of information for new developers.

Thornquist, Heidi K.; Rankin, Eric Lamont; Mei, Ting; Schiek, Richard Louis; Keiter, Eric Richard; Russo, Thomas V.

2010-09-01T23:59:59.000Z