Powered by Deep Web Technologies
Note: This page contains sample records for the topic "longwave broadband downwelling" 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.


1

ARM - Measurement - Longwave broadband downwelling irradiance  

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

downwelling irradiance downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave broadband downwelling irradiance The total diffuse and direct radiant energy, at wavelengths longer than approximately 4 {mu}m, that is being emitted downwards. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments BSRN : Baseline Solar Radiation Network BRS : Broadband Radiometer Station CO2FLX : Carbon Dioxide Flux Measurement Systems

2

ARM - Measurement - Shortwave broadband total downwelling irradiance  

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

downwelling irradiance downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband total downwelling irradiance The total diffuse and direct radiant energy that comes from some continuous range of directions, at wavelengths between 0.4 and 4 {mu}m, that is being emitted downwards. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component BSRN : Baseline Solar Radiation Network

3

ARM - Measurement - Shortwave broadband diffuse downwelling irradiance  

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

diffuse downwelling irradiance diffuse downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband diffuse downwelling irradiance All of the solar radiation, across the wavelength range of 0.4 and 4 {mu}m, coming directly from the sky except for solar radiation coming directly from the sun and the circumsolar irradiance within approximately three degrees of the sun. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments

4

An Improved Parameterization for Estimating Effective Atmospheric Emissivity for Use in Calculating Daytime Downwelling Longwave Radiation  

Science Conference Proceedings (OSTI)

An improved parameterization is presented for estimating effective atmospheric emissivity for use in calculating downwelling longwave radiation based on temperature, humidity, pressure, and solar radiation observations. The first improvement is ...

Todd M. Crawford; Claude E. Duchon

1999-04-01T23:59:59.000Z

5

Impact of Covariance Localization on Ensemble Estimation of Surface Downwelling Longwave and Shortwave Radiation Fluxes  

Science Conference Proceedings (OSTI)

Accurate estimates of terrestrial hydrologic states and fluxes are, in large part, dependent on accurate estimates of the spatiotemporal variability and uncertainty of land surface forcings, including downwelling longwave (LW) and shortwave (SW) ...

B. A. Forman; S. A. Margulis

2012-08-01T23:59:59.000Z

6

ARM: Broadband Radiometer Station (BRS) broadband shortwave and longwave 1-min radiation data with Dutton correction  

DOE Data Explorer (OSTI)

Broadband Radiometer Station (BRS) broadband shortwave and longwave 1-min radiation data with Dutton correction

Tom Stoffel; Bev Kay; Aron Habte; Mary Anderberg; Mark Kutchenreiter

7

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

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

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

8

Broadband Longwave Radiative Cooling Rates in Inhomogeneous Stratocumulus Clouds  

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

Broadband Longwave Radiative Cooling Rates in Broadband Longwave Radiative Cooling Rates in Inhomogeneous Stratocumulus Clouds M. Ovtchinnikov and T. P. Ackerman Pacific Northwest National Laboratory Richland, Washington D. B. Mechem and Y. L. Kogan Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma R. F. Cahalan National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland A. B. Davis Los Alamos National Laboratory Los Alamos, New Mexico R. G. Ellingson and E. E.Takara Florida State University Tallahassee, Florida K. F. Evans University of Colorado Boulder, Colorado Introduction We are concerned with three-dimensional (3D) effects of longwave (LW) radiative transfer (RT) through inhomogeneous clouds. In cloud models, LW RT is typically calculated under the independent

9

Evaluation of Methods to Estimate the Surface Downwelling Longwave Flux during Arctic Winter  

Science Conference Proceedings (OSTI)

Surface longwave radiation fluxes dominate the energy budget of nighttime polar regions, yet little is known about the relative accuracy of existing satellite-based techniques to estimate this parameter. We compare eight methods to estimate the ...

Marc Chiacchio; Jennifer Francis; Paul Stackhouse Jr.

2002-03-01T23:59:59.000Z

10

ARM's Broadband Radiometer Station (BRS) Data  

DOE Data Explorer (OSTI)

ARM's BRS data contains measurements of broadband shortwave and longwave, downwelling, upwelling, and normal radiation. The Broadband Radiometer Station (BRS) has collected data since 2001. Data Plots can be viewed for the BRS datastream through ARM's Thumbnail Browser. The primary site for BRS data collection is the Southern Great Plains (SGP).

11

Determination of Longwave Heat Flux at the Air-Sea Interface Using Measurements from Buoy Platforms  

Science Conference Proceedings (OSTI)

A theory for pyrgeometer operation is utilized for determining downwelling longwave radiation. Errors in downwelling longwave radiation measurements are due to differences in pyrgeometer body and dome temperatures compared to that of the ...

T. D. Dickey; D. V. Manov; R. A. Weller; D. A. Siegel

1994-08-01T23:59:59.000Z

12

The Global Character of the Flux of Downward Longwave Radiation  

Science Conference Proceedings (OSTI)

Four different types of estimates of the surface downwelling longwave radiative flux (DLR) are reviewed. One group of estimates synthesizes global cloud, aerosol, and other information in a radiation model that is used to calculate fluxes. Because ...

Graeme L. Stephens; Martin Wild; Paul W. Stackhouse Jr.; Tristan L’Ecuyer; Seiji Kato; David S. Henderson

2012-04-01T23:59:59.000Z

13

ARM - Measurement - Net broadband total irradiance  

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

govMeasurementsNet broadband total irradiance govMeasurementsNet broadband total irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Net broadband total irradiance The difference between upwelling and downwelling, covering longwave and shortwave radiation. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments EBBR : Energy Balance Bowen Ratio Station SEBS : Surface Energy Balance System External Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model

14

Spectral longwave emission in the tropics: FTIR measurements at the sea surface and comparison with fast radiation codes  

Science Conference Proceedings (OSTI)

Longwave emission by the tropical western Pacific atmosphere has been measured at the ocean surface by a Fourier Transform Infrared (FTIR) spectroradiometer deployed aboard the research vessel John Vickers as part of the Central Equatorial Pacific Experiment. The instrument operated throughout a Pacific Ocean crossing, beginning on 7 March 1993 in Honiara, Solomon Islands, and ending on 29 March 1993 in Los Angeles, and recorded longwave emission spectra under atmospheres associated with sea surface temperatures ranging from 291.0 to 302.8 K. Precipitable water vapor abundances ranged from 1.9 to 5.5 column centimeters. Measured emission spectra (downwelling zenith radiance) covered the middled infrared (5-20 {mu}m) with one inverse centimeter spectral resolution. FTIR measurements made under an entirely clear field of view are compared with spectra generated by LOWTRAN 7 and MODTRAN 2, as well as downwelling flux calculated by the NCAR COmmunity Climate Model (CCM-2) radiation code, using radiosonde profiles as input data for these calculations. In the spectral interval 800-1000 cm{sup -1}, these comparisons show a discrepance between FTIR data and MODTRAN 2 having an overall variability of 6-7 mW m{sup -2} sr{sup -1} cm and a concave shape that may be related to the representation of water vapor continuum emission in MODTRAN 2. Another discrepancy appears in the spectral interval 1200-1300 cm{sup -1}, whether MODTRAN 2 appears to overestimate zenith radiance by 5 mW m{sup -2} sr-1 cm. These discrepancies appear consistently; however, they become only slightly larger at the highest water vapor abundances. Because these radiance discrepancies correspond to broadband (500-2000 cm{sup -1}) flux uncertainties of around 3 W m{sup -2}, there appear to be no serious inadequacies with the performance of MODTRAN 2 or LOWTRAN 7 at high atmospheric temperatures and water vapor abundances. 23 refs., 10 figs.

Lubin, D.; Cutchin, D.; Conant, W. [Univ. of California, La Jolla, CA (United States)] [Univ. of California, La Jolla, CA (United States); Grassl, H. [Institut fuer Meteorologie, Hamburg (Germany)] [Institut fuer Meteorologie, Hamburg (Germany); Schmid, U.; Biselli, W. [Universitaet Hamburg, Hamburg (Germany)] [Universitaet Hamburg, Hamburg (Germany)

1995-02-01T23:59:59.000Z

15

ARM - Measurement - Longwave broadband upwelling irradiance  

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

Radiometer and Infrared Thermometer RAD : Radiation Measurements at AMF SIRS : Solar and Infrared Radiation Station External Instruments ECMWF : European Centre for...

16

ARM - Measurement - Longwave broadband net irradiance  

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

purposes. External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model...

17

On the Upwelling of Downwelling Currents  

Science Conference Proceedings (OSTI)

The term “downwelling currents” refers to currents with a downslope mass flux in the bottom boundary layer. Examples are the Malvinas and Southland Currents in the Southern Hemisphere and the Oyashio in the Northern Hemisphere. Although many of ...

Ricardo P. Matano; Elbio D. Palma

2008-11-01T23:59:59.000Z

18

Accounting for the Solar Radiation Influence on Downward Longwave Irradiance Measurements by Pyrgeometers  

Science Conference Proceedings (OSTI)

Measurements of broadband downward longwave (LW) irradiance are carried out at Lampedusa, Italy, in the Mediterranean, jointly with solar irradiance, since 2004 using shaded and unshaded Eppley Precision Infrared Radiometers (PIRs) and Kipp & ...

Daniela Meloni; Claudia Di Biagio; Alcide di Sarra; Francesco Monteleone; Giandomenico Pace; Damiano Massimiliano Sferlazzo

2012-11-01T23:59:59.000Z

19

Unfiltering of the Geostationary Earth Radiation Budget (GERB) Data. Part II: Longwave Radiation  

Science Conference Proceedings (OSTI)

The method used to estimate the unfiltered longwave broadband radiance from the filtered radiances measured by the Geostationary Earth Radiation Budget (GERB) instrument is presented. This unfiltering method is used to generate the first released ...

N. Clerbaux; S. Dewitte; C. Bertrand; D. Caprion; B. De Paepe; L. Gonzalez; A. Ipe; J. E. Russell

2008-07-01T23:59:59.000Z

20

Examination of the Relationship between Outgoing Infrared Window and Total Longwave Fluxes Using Satellite Data  

Science Conference Proceedings (OSTI)

The relationship between narrowband and broadband thermal radiances is explored to determine the accuracy of outgoing longwave radiation derived from narrowband data. Infrared window (10.2–12.2 ?m) data from the Geostationary Operational ...

Patrick Minnis; David F. Young; Edwin F. Harrison

1991-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

ARM - Measurement - Shortwave narrowband total downwelling irradiance  

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

downwelling irradiance downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave narrowband total downwelling irradiance The rate at which radiant energy, in narrow bands of wavelengths shorter than approximately 4 {mu}m, passes through a horizontal unit area in a downward direction. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MFRSR : Multifilter Rotating Shadowband Radiometer NFOV : Narrow Field of View Zenith Radiometer

22

ARM - Measurement - Shortwave narrowband direct downwelling irradiance  

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

downwelling irradiance downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave narrowband direct downwelling irradiance The direct unscattered radiant energy from the Sun, in a narrow band of wavelengths shorter than approximately 4 {mu}m, passing through a horizontal unit area in a downward direction. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Field Campaign Instruments SOAR : Shipboard Oceanographic and Atmospheric Radiation

23

ARM - Measurement - Shortwave spectral diffuse downwelling irradiance  

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

diffuse downwelling irradiance diffuse downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave spectral diffuse downwelling irradiance The rate at which spectrally resolved radiant energy at wavelengths shorter than approximately 4 {mu}m, that has been scattered in the atmosphere at least once, passes through a horizontal unit area in a downward direction. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments RSS : Rotating Shadowband Spectroradiometer

24

Downwelling over the Southern California Shelf  

Science Conference Proceedings (OSTI)

Coastal downwelling events, induced by tropical storms which travel up along the coast, occur regularly during the summer over the shelf of Southern California. Large vertical velocities (0.5 cm s?1) are observed over the very narrow (3.6 km) ...

Clinton D. Winant

1980-05-01T23:59:59.000Z

25

On the Estimation of Clear-Sky Upwelling Shortwave and Longwave  

SciTech Connect

Previous work (Long and Ackerman 2000; Long 2004) has concentrated on estimation of the downwelling clear-sky irradiances and the calculation of the effect of clouds on the downwelling radiative energy budget. However, cloud forcing is defined for the difference between clear- and cloudy-sky net radiation, which includes the upwelling components. Thus, if we are to estimate the surface radiative cloud forcing, the means must be developed to estimate what the upwelling shortwave and longwave irradiance would be if the clouds were not present. Estimation of the upwelling longwave (LW) is particularly troublesome in that the emitted upwelling LW is a function of the total surface energy exchange including latent and sensible heat, which is related to but not necessarily always totally driven by the radiative exchange alone, but also involves the evolving soil and vegetation properties and changes in soil moisture amounts.

Long, C.N.

2005-03-18T23:59:59.000Z

26

Large-Scale Precipitation and Outgoing Longwave Radiation from INSAT-1B during the 1986 Southwest Monsoon Season  

Science Conference Proceedings (OSTI)

Areally averaged precipitation and broadband outgoing longwave radiation (OLR) have been estimated from infrared window channel observations from INSAT-1B, the Indian geostationary satellite, for the period June–September 1986. The estimation ...

Phillip A. Arkin; A. V. R. Krishna Rao; R. R. Kelkar

1989-06-01T23:59:59.000Z

27

Modeling the Downwelling Longwave Radiation over a Groomed Ski Run under Clear Skies  

Science Conference Proceedings (OSTI)

The surface radiation budget of a groomed ski run is important to ski racing. Variables such as snow-surface temperature and liquid water content depend upon the surface radiation budget and are crucial to preparing fast skis. This case study ...

Rosie Howard; Roland Stull

2013-07-01T23:59:59.000Z

28

A 22-Year Dataset of Surface Longwave Fluxes in the Arctic  

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

22-Year Dataset of Surface Longwave Fluxes 22-Year Dataset of Surface Longwave Fluxes in the Arctic J. Francis and J. Secora Institute of Marine and Coastal Sciences Rutgers University New Brunswick, New Jersey Abstract Downwelling longwave fluxes (DLFs) over the Arctic surface have been generated from 22.5 years of radiances and retrievals from the TIROS (television and infrared observation satellite) operational vertical sounder (TOVS). The flux retrieval algorithm has been validated and improved using surface- based radiation and cloud observations from the Atmospheric Radiation Measurement (ARM) North Slope of Alaska (NSA) site in Barrow, Alaska, and from the Surface Heat Balance of the Arctic (SHEBA) field program (1997-98) in the Beaufort Sea. The DLF product is presented on a 100 x

29

Longwave Band-By-Band Cloud Radiative Effect and Its Application in GCM Evaluation  

Science Conference Proceedings (OSTI)

The cloud radiative effect (CRE) of each longwave (LW) absorption band of a GCM’s radiation code is uniquely valuable for GCM evaluation because 1) comparing band-by-band CRE avoids the compensating biases in the broadband CRE comparison and 2) ...

Xianglei Huang; Jason N. S. Cole; Fei He; Gerald L. Potter; Lazaros Oreopoulos; Dongmin Lee; Max Suarez; Norman G. Loeb

2013-01-01T23:59:59.000Z

30

A 20-year data set of surface longwave fluxes in the Arctic  

SciTech Connect

Creation of 20-year data set of surface infrared fluxes from satellite measurements. A reliable estimate of the surface downwelling longwave radiation flux (DLF) is a glaring void in available forcing data sets for models of Arctic sea ice and ocean circulation. We have developed a new method to estimate the DLF from a combination of satellite sounder retrievals and brightness temperatures from the TIROS Operational Vertical Sounder (TOVS), which has flown on NOAA polar-orbiting satellites continuously since late 1979. The overarching goal of this project was to generate a 20-year data set of surface downwelling longwave flux measurements from TOVS data over the Arctic Ocean. Daily gridded fields of DLF were produced with a spatial resolution of (100 km){sup 2} north of 60{sup o}N for 22.5 years rather than only 20. Surface measurements from the field station at Barrow, AK--part of the Atmospheric Radiation Measurement (ARM) Program --and from the Surface Heat Budget of the Arctic (SHEBA) were used to validate the satellite-derived fluxes and develop algorithm improvements for conditions that had resulted in systematic errors in early versions of the algorithm. The resulting data set has already been sent to two other investigators for incorporation into their research, and we will soon complete preparations to send the products to the National Snow and Ice Data Center and ARM data archive, where it can be disseminated to the scientific community.

Jennifer Francis

2004-06-15T23:59:59.000Z

31

ARM - Measurement - Longwave spectral radiance  

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

spectral radiance spectral radiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave spectral radiance The rate at which the spectrally resolved radiant energy in the longwave portion of the spectrum is emitted in a particular direction per unit area perpendicular to the direction of radiation. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer ASSIST : Atmospheric Sounder Spectrometer for Infrared Spectral

32

Wind-Forced Downwelling Slope Currents: A Numerical Study  

Science Conference Proceedings (OSTI)

A study is made of the dynamics of slope currents that arise from a steady, constant alongshore wind over a uniform shelf. Over the first 10–20 days, the evolution of the downwelled system on an f plane is qualitatively described by linear ...

John F. Middleton; Mauro Cirano

1999-08-01T23:59:59.000Z

33

The Inner Shelf Response to Wind-Driven Upwelling and Downwelling  

Science Conference Proceedings (OSTI)

A two-dimensional numerical model is used to study the response to upwelling- and downwelling-favorable winds on a shelf with a strong pycnocline. During upwelling or downwelling, the pycnocline intersects the surface or bottom, forming a front ...

Jay A. Austin; Steven J. Lentz

2002-07-01T23:59:59.000Z

34

Longwave Scattering Effects of Mineral Aerosols  

Science Conference Proceedings (OSTI)

Scattering in the longwave domain has been neglected in the first generation of radiative codes and is still neglected in most current GCMs. Scattering in the longwave domain does not play any significant role for clear-sky conditions but recent ...

Jean-Louis Dufresne; Catherine Gautier; Paul Ricchiazzi; Yves Fouquart

2002-06-01T23:59:59.000Z

35

Downwell pump reliability: Geothermal experience update: Final report  

DOE Green Energy (OSTI)

Geothermal resources with temperatures between 250/sup 0/ and 360/sup 0/F (121/sup 0/C and 182/sup 0/C) are prime candidates for binary-cycle power generation, and constitute about 80% of the power-capable resources in the United States. The successful exploitation of these resources requires reliable high-capacity downwell brine production pumps, but earlier experience showed that high-capacity, high-temperature geothermal production pumps had many problems which resulted in a mean time-to-failure (MTTF) of less than 1000 h. However, steady progress has been made since 1981, and a large body of experience has been acquired by three geothermal binary plants. This survey of high-temperature geothermal downwell pump users and manufacturers updates a prior survey (AP-3572) completed in early 1983. This survey traces the development of lineshaft pump technology from the late 1970s to the present (mid-1987), detailing the advances in design, materials selection, and operating practices. Case histories of 72 lineshaft pumps installed at three geothermal binary plants since late 1981 are documented, including some detailed cause of failure reports. In the recent past, pump lives in excess of 7000 h have become common, but a high continuing rate of premature failures resulted in a mean time-to-failure (MTTF) of about 5000 h. Based on recent advances which appear likely to eliminate most premature failures, the estimated near-term MTTF will be on the order of 8000 h. The survey found almost no development of high-temperature geothermal electric submersible pumps (ESP's) or close-coupled downwell hydraulic turbopumps, and concluded that considerable development and demonstration will be needed before these technologies are able to compete with existing high-temperature geothermal lineshaft pump technology. 36 refs., 10 figs., 25 tabs.

Ellis, P.F.

1988-01-01T23:59:59.000Z

36

Long-Wave Infrared | Open Energy Information  

Open Energy Info (EERE)

Long-Wave Infrared Long-Wave Infrared Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Long-Wave Infrared Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Map characteristic minerals associated with hot springs/mineral deposits Stratigraphic/Structural: Hydrological: Thermal: Map surface temperatures Dictionary.png Long-Wave Infrared: Long Wave Infrared (LWIR) refers to multi- and hyperspectral data collected in the 8 to 15 µm wavelength range. LWIR surveys are sometimes referred to as "thermal imaging" and can be used to identify relatively warm features

37

Annual Cycle of Surface Longwave Radiation  

Science Conference Proceedings (OSTI)

The annual cycles of upward and downward longwave fluxes at the earth’s surface are investigated by use of the NASA Global Energy and Water Cycle Experiment (GEWEX) Surface Radiation Budget Dataset. Principal component analysis is used to quantify ...

Pamela E. Mlynczak; G. Louis Smith; Anne C. Wilber; Paul W. Stackhouse

2011-06-01T23:59:59.000Z

38

Spatial Variability of Outgoing Longwave Radiation  

Science Conference Proceedings (OSTI)

Data from the Earth Radiation Budget Experiment scanning radiometer aboard the NOAA-9 operational meteorological satellite are used to investigate the spatial variability of outgoing longwave radiation (OLR). Daily and monthly radiation maps at ...

G. Louis Smith; David Rutan

1994-07-01T23:59:59.000Z

39

Evidence for Stratospheric Downwelling Associated with High-Elevation Topography  

SciTech Connect

The continued presence of elevated chlorine-36 in Sierra Nevada streams is commonly interpreted as residual nuclear fallout, but this prolonged storage contradicts accepted hydrologic models, which indicate much less short-term groundwater storage. Our hypothesis is that the chlorine-36 source is stratospheric downwelling during high-intensity storms by measuring beryllium-7 and -10, sodium-22, and chlorium-36 in precipitation, lake, and soil samples. These nuclides are produced in abundance in the stratosphere and, except for chlorine-36, did not occur as nuclear fallout. This project will either substantially change hydrologic models or reveal an unrecognized pathway for stratosphere-troposphere exchange. Either result will have substantial scientific impact. The test of the hypothesis is straightforward. If stratospheric downwelling occurs to the extent indicated by observed Sierran chlorine-36 levels, it should be detectable by elevated levels of beryllium-7 and -10, sodium-22, and chlorine-36 in storm precipitation. Samples will be collected from an established array of sampling locations. If elevated levels of these nuclides are not found, it would cast severe doubt on the hypothesis. In this case, Sierran hydrologic models will have to take into account high levels of long-term groundwater storage. If elevated levels of these nuclides are found in Sierran precipitation, it could only be from stratospheric input, both because nuclear fallout is no longer occurring and because beryllium-7 and -10 and sodium-22 are not produced by atmospheric nuclear tests.

Finkel, R

2009-01-28T23:59:59.000Z

40

Longwave Cloud Radiative Forcing as Determined from Nimbus-7 Observations  

Science Conference Proceedings (OSTI)

Collocated and coincident cloud and outgoing longwave radiation observations taken by experiments on board the Nimbus-7 satellite have been used to infer the daytime longwave cloud-radiative forcing. Through the specification of a time-series of ...

Philip E. Ardanuy; Larry L. Stowe; Arnold Gruber; Mitchell Weiss; Craig S. Long

1989-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Longwave radiative forcing by aqueous aerosols  

SciTech Connect

Recently, a great deal of interest has been focused on the role of aerosols in climatic change because of their potential cooling impacts due to light scattering. Recent advances in infrared spectroscopy using cylindrical internal reflectance have allowed the longwave absorption of dissolved aerosol species and the associated liquid water to be accurately determined and evaluated. Experimental measurements using these techniques have shown that dissolved sulfate, nitrate, and numerous other aerosol species will act to cause greenhouse effects. Preliminary calculations indicate that the longwave climate forcing (i.e., heating) for sulfate aerosol will be comparable in magnitude to the cooling effect produced by light scattering. However, more detailed modeling will clearly be needed to address the impact of the longwave forcing due to aerosols as a function of atmospheric height and composition. Their work has shown that aerosol composition will be important in determining longwave forcing, while shortwave forcing will be more related to the physical size of the aerosol droplets. On the basis of these studies, it is increasingly apparent that aerosols, fogs, and clouds play a key role in determining the radiative balance of the atmosphere and in controlling regional and global climates.

Gaffney, J.S.; Marley, N.A. [Argonne National Lab., IL (United States). Environmental Research Div.

1995-01-01T23:59:59.000Z

42

ARM - Datastreams - brs60s  

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

Datastreamsbrs60s Datastreamsbrs60s Documentation Data Quality Plots Citation DOI: 10.5439/1025162 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : BRS60S Broadband Radiometer Station (BRS): 60-second broadband shortwave and longwave radiation Active Dates 2001.03.05 - 2003.04.17 Measurement Categories Radiometric Originating Instrument Broadband Radiometer Station (BRS) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Longwave broadband downwelling irradiance down_long_hemisp_shaded Longwave broadband downwelling irradiance down_long_hemisp_shaded_max Longwave broadband downwelling irradiance

43

Exact Solutions of Wind-Driven Coastal Upwelling and Downwelling over Sloping Topography  

Science Conference Proceedings (OSTI)

The dynamics of wind-driven coastal upwelling and downwelling are studied using a simplified dynamical model. Exact solutions are examined as a function of time and over a family of sloping topographies. Assumptions in the two-dimensional model ...

P. F. Choboter; Dana Duke; J. P. Horton; Paul Sinz

2011-07-01T23:59:59.000Z

44

Drifter Behavior on the Oregon–Washington Shelf during Downwelling-Favorable Winds  

Science Conference Proceedings (OSTI)

Drifters released offshore of Oregon during predominantly downwelling favorable alongshore winds during three different deployments (October 1994, January 1998, and September 1998) display similar behavior: after being advected around in the ...

Jay A. Austin; John A. Barth

2002-11-01T23:59:59.000Z

45

Downwelling-Front Instability and Eddy Formation in the Eastern Mediterranean  

Science Conference Proceedings (OSTI)

The instability of the downwelling front along the southern coast of Asia Minor is studied with a multimode quasigeostrophic model. Linear analysis shows that the most unstable wave has a length of about 100 km, The wavelength depends only very ...

Yizhak Feliks; Michael Ghil

1993-01-01T23:59:59.000Z

46

Dynamics of Intensified Downwelling Circulation over a Widened Shelf in the Northeastern South China Sea  

Science Conference Proceedings (OSTI)

This study reveals the dynamics behind the intensified, downslope, cross-isobath transport over a widened shelf (narrowing downwave) in the northeastern South China Sea (NSCS) during a downwelling event. Utilizing a three-dimensional numerical ...

Jianping Gan; Ho San Ho; Linlin Liang

2013-01-01T23:59:59.000Z

47

On the Response of a Buoyant Plume to Downwelling-Favorable Wind Stress  

Science Conference Proceedings (OSTI)

Here, the response of a coastally trapped buoyant plume to downwelling-favorable wind forcing is explored using a simplified two-dimensional numerical model and a prognostic theory for the resulting width, depth, and density anomaly and along-...

Carlos Moffat; Steven Lentz

2012-07-01T23:59:59.000Z

48

Feasibility demonstration of the Sperry down-well pumping system. Final report  

DOE Green Energy (OSTI)

Advantages of down-well pumping (vs. free-flowing) of geothermal hot-water wells are presented, and criteria for such a system are discussed. The main body of the report is presented under the following section headings: the Sperry down-well pumping system; field test program; field operations; test results; and, conclusions and recommendations. The appendix includes a summary of boiler heat transfer and pressure drop calculations. (JGB)

Not Available

1977-05-01T23:59:59.000Z

49

Evaluation of Arctic Broadband Surface Radiation Measurements  

Science Conference Proceedings (OSTI)

The Arctic is a challenging environment for making in-situ radiation measurements. A standard suite of radiation sensors is typically designed to measure the total, direct and diffuse components of incoming and outgoing broadband shortwave (SW) and broadband thermal infrared, or longwave (LW) radiation. Enhancements can include various sensors for measuring irradiance in various narrower bandwidths. Many solar radiation/thermal infrared flux sensors utilize protective glass domes and some are mounted on complex mechanical platforms (solar trackers) that rotate sensors and shading devices that track the sun. High quality measurements require striking a balance between locating sensors in a pristine undisturbed location free of artificial blockage (such as buildings and towers) and providing accessibility to allow operators to clean and maintain the instruments. Three significant sources of erroneous data include solar tracker malfunctions, rime/frost/snow deposition on the instruments and operational problems due to limited operator access in extreme weather conditions. In this study, a comparison is made between the global and component sum (direct [vertical component] + diffuse) shortwave measurements. The difference between these two quantities (that theoretically should be zero) is used to illustrate the magnitude and seasonality of radiation flux measurement problems. The problem of rime/frost/snow deposition is investigated in more detail for one case study utilizing both shortwave and longwave measurements. Solutions to these operational problems are proposed that utilize measurement redundancy, more sophisticated heating and ventilation strategies and a more systematic program of operational support and subsequent data quality protocols.

Matsui, N.; Long, Charles N.; Augustine, J. A.; Halliwell, D.; Uttal, Taneil; Longenecker, D.; Niebergale, J.; Wendell, J.; Albee, R.

2012-02-24T23:59:59.000Z

50

The QME AERI LBLRTM: A Closure Experiment for Downwelling High Spectral Resolution Infrared Radiance  

Science Conference Proceedings (OSTI)

Research funded by the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) program has led to significant improvements in longwave radiative transfer modeling over the last decade. These improvements, which have generally come in ...

D. D. Turner; D. C. Tobin; S. A. Clough; P. D. Brown; R. G. Ellingson; E. J. Mlawer; R. O. Knuteson; H. E. Revercomb; T. R. Shippert; W. L. Smith; M. W. Shephard

2004-11-01T23:59:59.000Z

51

ARM - Measurement - Longwave narrowband brightness temperature  

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

narrowband brightness temperature narrowband brightness temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave narrowband brightness temperature A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation in the same narrow band of wavelengths. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer Field Campaign Instruments RAD-AIR : Airborne Radiometers

52

ARM - Measurement - Longwave narrowband upwelling irradiance  

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

narrowband upwelling irradiance narrowband upwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave narrowband upwelling irradiance The total radiant energy, in a narrow band of wavelengths longer than approximately 4 {mu}m, passing through a horizontal unit area in an upward direction. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Field Campaign Instruments OTTER : Twin Otter UAV-EGRETT : UAV-Egrett Value-Added Products LBTM-MINNIS : Minnis Cloud Products Using LBTM Algorithm (Process)

53

The Status of the NOAA Outgoing Longwave Radiation Data Set  

Science Conference Proceedings (OSTI)

National Oceanic and Atmospheric Administration (NOAA) satellites have provided over eight years of observations from which estimates of the earth's total longwave emittance can be derived. Changes in satellite instrumentation, orbit, and ...

Arnold Gruber; Arthur F. Krueger

1984-09-01T23:59:59.000Z

54

Improvement of Surface Longwave Flux Algorithms Used in CERES Processing  

Science Conference Proceedings (OSTI)

An improvement was developed and tested for surface longwave flux algorithms used in the Clouds and the Earth’s Radiant Energy System processing based on lessons learned during the validation of global results of those algorithms. The algorithms ...

Shashi K. Gupta; David P. Kratz; Paul W. Stackhouse Jr.; Anne C. Wilber; Taiping Zhang; Victor E. Sothcott

2010-07-01T23:59:59.000Z

55

Multidimensional Longwave Forcing of Boundary Layer Cloud Systems  

Science Conference Proceedings (OSTI)

The importance of multidimensional (MD) longwave radiative effects on cloud dynamics is evaluated in an eddy-resolving model (ERM)—the two-dimensional analog to large-eddy simulation (LES)—framework employing multidimensional radiative transfer [...

David B. Mechem; Yefim L. Kogan; Mikhail Ovtchinnikov; Anthony B. Davis; K. Franklin Evans; Robert G. Ellingson

2008-12-01T23:59:59.000Z

56

An Analytic Longwave Radiation Formula for Liquid Layer Clouds  

Science Conference Proceedings (OSTI)

Many Global Energy and Water Cycle Experiment (GEWEX) Cloud System Study (GCSS) intercomparisons of boundary layer clouds have used a convenient but idealized longwave radiation formula for clouds in their large-eddy simulations (LESs). Under ...

Vincent E. Larson; Kurt E. Kotenberg; Norman B. Wood

2007-02-01T23:59:59.000Z

57

Development of the HIRS Outgoing Longwave Radiation Climate Dataset  

Science Conference Proceedings (OSTI)

The Advanced Very High Resolution Radiometer (AVHRR) outgoing longwave radiation (OLR) product, which NOAA has been operationally generating since 1979, is a very long data record that has been used in many applications, yet past studies have ...

Hai-Tien Lee; Arnold Gruber; Robert G. Ellingson; Istvan Laszlo

2007-12-01T23:59:59.000Z

58

Evolution and Trend of the Outgoing Longwave Radiation Spectrum  

Science Conference Proceedings (OSTI)

The variability and change occurring in the outgoing longwave radiation (OLR) spectrum are investigated by using simulations performed with a Geophysical Fluid Dynamics Laboratory coupled atmosphere–ocean–land general circulation model. First, ...

Yi Huang; V. Ramaswamy

2009-09-01T23:59:59.000Z

59

Factors Controlling ERBE Longwave Clear Sky and Cloud Forcing Fluxes  

Science Conference Proceedings (OSTI)

The factors controlling the Earth Radiation Budget satellite (ERBS) longwave clear sky and cloud-forcing fluxes are investigated using statistical analyses of the ERBS fluxes with International Satellite Cloud Climatology Project (ISCCP) cloud ...

Bryan C. Weare

1995-07-01T23:59:59.000Z

60

A study of longwave radiation codes for climate studies: Validation with ARM observations and tests in general circulation models. Technical report, 15 September 1990--25 April 1993  

SciTech Connect

This report summarizes the activities of our group to meet our stated objectives. The report is divided into sections entitled: Radiation Model Testing Activities, General Circulation Model Testing Activities, Science Team Activities, and Publications, Presentations and Meetings. The section on Science Team Activities summarizes our participation with the science team to further advance the observation and modeling programs. Appendix A lists graduate students supported, and post-doctoral appointments during the project. Reports on the activities during each of the first two years are included as Appendix B. Significant progress has been made in: determining the ability of line-by-line radiation models to calculate the downward longwave flux at the surface; determining the uncertainties in calculated the downwelling radiance and flux at the surface associated with the use of different proposed profiling techniques; intercomparing clear-sky radiance and flux observations with calculations from radiation codes from different climate models; determining the uncertainties associated with estimating N* from surface longwave flux observations; and determining the sensitivity of model calculations to different formulations of the effects of finite sized clouds.

Ellingson, R.G.; Baer, F.

1993-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Long-Term Trends in Downwelling Spectral Infrared Radiance over the U.S. Southern Great Plains  

Science Conference Proceedings (OSTI)

A trend analysis was applied to a 14-yr time series of downwelling spectral infrared radiance observations from the Atmospheric Emitted Radiance Interferometer (AERI) located at the Atmospheric Radiation Measurement Program (ARM) site in the U.S. ...

P. Jonathan Gero; David D. Turner

2011-09-01T23:59:59.000Z

62

A comparison of cloudiness measures derived from longwave measurements and  

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

A comparison of cloudiness measures derived from longwave measurements and A comparison of cloudiness measures derived from longwave measurements and shortwave sky imagers Takara, Ezra Florida State University Ellingson, Robert Florida State University Ma, Yingtao University of Maryland Category: Cloud Properties In the longwave, two measures of cloudiness for single layer clouds are the probability of clear line of sight (PCLoS) and the effective cloud fraction. As the name states, the PCLoS is the probability of a clear line of sight through a broken cloud field. The effectivecloud fraction is the fraction of the sky that is taken up by the clouds; this includes the portion blocked by the cloud sides as well as the fraction taken up by the cloud bases. The effective cloud fraction can be derived from measurements or from the PCLoS. Here the PCLoS obtained from the shortwave-based Total

63

Broadband in the Home  

Science Conference Proceedings (OSTI)

Despite the fact that well over half the population is now served by ADSL-equipped exchanges (at March 2002 there were 1010 exchanges enabled for broadband), the take-up of broadband, particularly in the home, is very low. By March 2002 there were 145 ...

K. E. Nolde

2002-04-01T23:59:59.000Z

64

POLICY BRIEF RURAL BROADBAND  

E-Print Network (OSTI)

unused airwaves abutting broadcast television spectrum to be available for wireless broadband 1. Opening these airwaves, which are commonly called television “white spaces, ” is expected to lead to improved wireless connectivity and considerable innovation in Internet?based products and services. Advocates say that the new rules could significantly upgrade the range and quality of broadband services across rural America. This change is just one of many decisions, policies, reports, and pieces of legislation concerning improved broadband deployment that have appeared in recent months. This brief has been prepared to give policymakers and practitioners with interests in rural development some background on the issues and opportunities associated with rural broadband, as a basis for wiser public choice on investment in rural places. What is broadband? The term ”broadband ” refers to any technology that transmits data across the Internet at high speeds and is “always on ” – as compared with a dial?up system that must be connected each time a user wishes to access the Internet. Broadband systems have a two?way stream of data: upstream for sending data and downstream for receiving data. Broadband services in the United States are most often delivered by telephone companies on digital

Brian Dabson; Jennifer Keller; Brian Dabson; Jennifer Keller I

2008-01-01T23:59:59.000Z

65

Satellite Determinations of the Relationship between Total Longwave Radiation Flux and Infrared Window Radiance  

Science Conference Proceedings (OSTI)

Nimbus-7 satellite observations are used to determine the relationship between the total longwave radiation flux and the radiance in the 10-12 ?m infrared window. The total longwave fluxes are obtained from the earth radiation budget (ERB) narrow-...

George Ohring; Arnold Gruber; Robert Ellingson

1984-03-01T23:59:59.000Z

66

Empirical Orthogonal Function Analysis of Satellite-Observed Outgoing Longwave Radiation During Summer  

Science Conference Proceedings (OSTI)

Some of the characteristic features of the Asiatic summer monsoon were investigated using outgoing longwave radiation data obtained from NOAA polar orbiting satellites during the summer mouths in 1974–77. Monthly mean outgoing longwave radiation ...

Takio Murakami

1980-02-01T23:59:59.000Z

67

The Broadband Access Facility  

Science Conference Proceedings (OSTI)

The deployment of broadband access networks will revolutionise many aspects of society in the early years of the next millennium. Manufacturers, telecommunications providers and cable television operators world-wide are investing heavily on research ...

J. Kelly; R. Adnams; M. Enrico; M. Whittle

2000-01-01T23:59:59.000Z

68

Absolute Cavity Pyrgeometer to Measure the Absolute Outdoor Longwave Irradiance with Traceability to International System of Units, SI  

SciTech Connect

This article describes a method of measuring the absolute outdoor longwave irradiance using an absolute cavity pyrgeometer (ACP), U.S. Patent application no. 13/049, 275. The ACP consists of domeless thermopile pyrgeometer, gold-plated concentrator, temperature controller, and data acquisition. The dome was removed from the pyrgeometer to remove errors associated with dome transmittance and the dome correction factor. To avoid thermal convection and wind effect errors resulting from using a domeless thermopile, the gold-plated concentrator was placed above the thermopile. The concentrator is a dual compound parabolic concentrator (CPC) with 180{sup o} view angle to measure the outdoor incoming longwave irradiance from the atmosphere. The incoming irradiance is reflected from the specular gold surface of the CPC and concentrated on the 11 mm diameter of the pyrgeometer's blackened thermopile. The CPC's interior surface design and the resulting cavitation result in a throughput value that was characterized by the National Institute of Standards and Technology. The ACP was installed horizontally outdoor on an aluminum plate connected to the temperature controller to control the pyrgeometer's case temperature. The responsivity of the pyrgeometer's thermopile detector was determined by lowering the case temperature and calculating the rate of change of the thermopile output voltage versus the changing net irradiance. The responsivity is then used to calculate the absolute atmospheric longwave irradiance with an uncertainty estimate (U{sub 95}) of {+-}3.96 W m{sup 02} with traceability to the International System of Units, SI. The measured irradiance was compared with the irradiance measured by two pyrgeometers calibrated by the World Radiation Center with traceability to the Interim World Infrared Standard Group, WISG. A total of 408 readings were collected over three different nights. The calculated irradiance measured by the ACP was 1.5 W/m{sup 2} lower than that measured by the two pyrgeometers that are traceable to WISG, with a standard deviation of {+-}0.7 W m{sup -2}. These results suggest that the ACP design might be used for addressing the need to improve the international reference for broadband outdoor longwave irradiance measurements.

Reda, I.; Zeng, J.; Scheuch, J.; Hanssen, L.; Wilthan, B.; Myers, D.; Stoffel, T.

2012-03-01T23:59:59.000Z

69

New Visible to Broadband Shortwave Conversions for Deriving Albedos from GOES-8 Over the ARM-SGP  

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

New Visible to Broadband Shortwave Conversions for New Visible to Broadband Shortwave Conversions for Deriving Albedos from GOES-8 Over the ARM-SGP V. Chakrapani, D. R. Doelling, and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction The radiation budget at the top of the atmosphere (TOA) is a quantity of fundamental importance to the Atmospheric Radiation Measurement (ARM) Program. Thus, it is necessary to measure the radiation budget components, broadband shortwave (SW) albedo and outgoing longwave radiation, as accurately as possible. Measurement of TOA broadband albedos over the ARM surface sites has only been possible since the advent of Clouds and the Earth's Radiant Energy System (CERES; Wielicki et al.

70

Definition: Long-Wave Infrared | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Long-Wave Infrared Jump to: navigation, search Dictionary.png Long-Wave Infrared Long Wave Infrared (LWIR) refers to multi- and hyperspectral data collected in the 8 to 15 µm wavelength range. LWIR surveys are sometimes referred to as "thermal imaging" and can be used to identify relatively warm features such as hot springs, fumaroles, and snow melt. LWIR can also be used to map the distribution of certain minerals related to hydrothermal alterations.[2] View on Wikipedia Wikipedia Definition References ↑ Katherine Young,Timothy Reber,Kermit Witherbee. 2012. Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei. In: Proceedings of the Thirty-Seventh Workshop on Geothermal

71

Implementing the National Broadband  

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

Type text] Type text] Response to Request for Information from the Department of Energy: Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy [FR Doc. 2010-11127] July 12, 2010 EnerNOC Page 2 of 8 EnerNOC, Inc. ("EnerNOC") is pleased to provide these comments to the Department of Energy in response to the Request for Information "Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy." EnerNOC is a provider of demand response and energy efficiency solutions to utilities, Independent

72

The broadband bonus: Estimating broadband Internet's economic value  

Science Conference Proceedings (OSTI)

How much economic value did broadband Internet create? Despite the importance of this question for national policy, no research has estimated broadband's incremental contribution to U.S. GDP by calibrating against historical adoption and incorporating ... Keywords: Broadband, Economic value, Internet, Surplus

Shane Greenstein; Ryan C. McDevitt

2011-08-01T23:59:59.000Z

73

Technical Sessions A Study of Longwave Radiation Codes for Climate Studies:  

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

A Study of Longwave Radiation A Study of Longwave Radiation Codes for Climate Studies: Validation with ARM Observations and Tests in General Circulation Models R. G. Ellingson F. Baer Department of Meteorology University of Maryland College Park, MD 20742 Introduction the radiation sensitivity problem. We anticipate that the outcome of this approach will provide both a better longwave radiative forcing algorithm and a better understanding of how longwave radiative forcing influences the equilibrium climate of the atmosphere. Nature of Longwave Problems Longwave radiation quantities-radiances, fluxes and heating rates-are usually calculated in GCM models as the cloud amount weighted average of the values for clear and homogeneous cloud conditions. For example, the downward flux at the surface, F, may be written as

74

Broadband and universal service  

Science Conference Proceedings (OSTI)

Section 254(b)(3) of the 1996 Telecommunications Act established the objective that residents of rural areas should have access to advanced telecommunications and information services comparable to services in urban areas. Pursuant to the passage of ... Keywords: Broadband policy, Empirical analysis, Rural, Telecommunications policy, Universal service

David Gabel

2007-07-01T23:59:59.000Z

75

Clear Skies A Study of Longwave Radiation Codes for Climate Studies...  

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

Study of Longwave Radiation Codes for Climate Studies: Validation with Observations and Tests in General Circulation Models-an Update R. G. Ellingson and F. Baer Department of...

76

Asymmetry in the Diurnal Cycle of Atmospheric Downwelling Radiation at the ARM SGP CF Site Over 1995-2001 Period  

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

Asymmetry in the Diurnal Cycle of Atmospheric Asymmetry in the Diurnal Cycle of Atmospheric Downwelling Radiation at the ARM SGP CF Site Over 1995-2001 Period A. P. Trishchenko Canada Centre for Remote Sensing Ottawa, Ontario, Canada Introduction The shape of the diurnal cycle of atmospheric downwelling radiation is an important climatic feature of cloud-radiation interactions and atmospheric properties. Adequate characterization of this diurnal cycle is critical for accurate determination of monthly and seasonal radiation budgets from a limited data sampling. This is especially important for establishing the optimal sampling and temporal interpolation schemes employed in satellite radiation budget missions, such as Earth Radiation Budget Experiment (ERBE), Scanner for Radiation Budget (ScaRaB), and Clouds and Earth's Radiant Energy System

77

Implementing the National Broadband  

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

Before the Before the Department of Energy Washington, D.C. 20585 In the Matter of Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy NBP RFI: Communications Requirements COMMENTS OF BALTIMORE GAS & ELECTRIC COMPANY I. Introduction BGE is the nation's oldest and most experienced utility company. It has met the energy needs of central Maryland for nearly 200 years. Today, it serves more than 1.2 million business and residential electric customers, and approximately 650,000 gas customers in an economically diverse, 2,300-square-mile area encompassing Baltimore City and all or part of ten central Maryland counties.

78

Long-Wave Infrared At Coso Geothermal Area (1968-1971) | Open Energy  

Open Energy Info (EERE)

Long-Wave Infrared At Coso Geothermal Area (1968-1971) Long-Wave Infrared At Coso Geothermal Area (1968-1971) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Long-Wave Infrared At Coso Geothermal Area (1968-1971) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Long-Wave Infrared Activity Date 1968 - 1971 Usefulness useful DOE-funding Unknown Exploration Basis Fumarolic and hot springs activity Notes 8- to 14-micrometer IR imagery has value in delineating the typical arcuate structural patterns References Koenig, J.B.; Gawarecki, S.J.; Austin, C.F. (1 February 1972) Remote sensing survey of the Coso geothermal area, Inyo county, California. Technical publication 1968--1971 Retrieved from "http://en.openei.org/w/index.php?title=Long-Wave_Infrared_At_Coso_Geothermal_Area_(1968-1971)&oldid=473747"

79

Eastward Propagation of 30–60 Day Perturbations as Revealed from Outgoing Longwave Radiation Data  

Science Conference Proceedings (OSTI)

Some of the characteristic features of low-frequency oscillations were investigated by applying an extended empirical orthogonal function (EEOF) analysis to 30–60 day filtered outgoing longwave radiation (OLR) data during the eight years of.1975–...

Takio Murakami; Long-Xun Chen; An Xie; Madan L. Shrestha

1986-05-01T23:59:59.000Z

80

Earth Radiation Budget: Results of Outgoing Longwave Radiation from Nimbus-7, NOAA-9, and ERBS Satellites  

Science Conference Proceedings (OSTI)

Eighteen months of wide field-of-view (WFOV) outgoing longwave radiation (OLR) measurements from the Earth Radiation Budget Experiment (ERBE) NOAA-9 and NOAA-10 spacecraft have been deconvolved to produce resolution-enhanced flux maps at the top ...

T. Dale Bess; G. Louis Smith

1993-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Investigating Variability of Outgoing Longwave Radiation over Peninsular Malaysia Using Wavelet Transform  

Science Conference Proceedings (OSTI)

The present study analyzes and quantifies the spatial–temporal variability of outgoing longwave radiation (OLR) over peninsular Malaysia using the continuous wavelet transform (CWT) from 2003 to 2010. The goal is to understand the long-term ...

E. S. Lim; Uma Das; C. J. Pan; K. Abdullah; C. J. Wong

2013-05-01T23:59:59.000Z

82

Longwave 3D Benchmarks for Inhomogeneous Clouds and Comparisons with Approximate Methods  

Science Conference Proceedings (OSTI)

The purpose of this study is twofold: to (i) establish three-dimensional (3D) longwave radiative transfer benchmarks for inhomogeneous cloud fields and (ii) compare the results with three approximate, 1D methods. The benchmark results are ...

George P. Kablick III; Robert G. Ellingson; Ezra E. Takara; Jlujing Gu

2011-04-01T23:59:59.000Z

83

Simulation of the Diurnal Cycle of Outgoing Longwave Radiation with an Atmospheric GCM  

Science Conference Proceedings (OSTI)

Results are presented from an integration of the U.K. Meteorological Office 11-Layer Atmospheric General Circulation Model, with emphasis on the simulation of the diurnal cycle of the outgoing longwave radiation. The model reproduces many of the ...

A. Slingo; R. C. Wilderspin; S. J. Brentnall

1987-07-01T23:59:59.000Z

84

An Earth Outgoing Longwave Radiation Climate Model. Part II: Radiation with Clouds Included  

Science Conference Proceedings (OSTI)

An Earth outgoing longwave radiation (OLWR) climate model was constructed for radiation budget studies. The model consists of the upward radiative transfer parameterization of Thompson and Warren, the cloud cover model of Sherr et al., and a ...

Shi-Keng Yang; G. Louis Smith; Fred L. Bartman

1988-10-01T23:59:59.000Z

85

Parameterizing Grid-Averaged Longwave Fluxes for Inhomogeneous Marine Boundary Layer Clouds  

Science Conference Proceedings (OSTI)

This paper examines the relative impacts on grid-averaged longwave flux transmittance (emittance) for marine boundary layer (MBL) cloud fields arising from horizontal variability of optical depth ? and cloud sides. First, using fields of Landsat-...

Howard W. Barker; Bruce A. Wielicki

1997-12-01T23:59:59.000Z

86

Aerosol Effects on Cloud Emissivity and Surface Longwave Heating in the Arctic  

Science Conference Proceedings (OSTI)

Increases in anthropogenic aerosols in the atmosphere tend to increase the reflectance of solar (shortwave) radiation from water clouds, which can lead to lower surface temperatures. Here an opposing effect whereby aerosols increase the longwave ...

Timothy J. Garrett; Lawrence F. Radke; Peter V. Hobbs

2002-02-01T23:59:59.000Z

87

Annual and Interannual Variations in Outgoing Longwave Radiation over the Tropics  

Science Conference Proceedings (OSTI)

Four years of satellite observations of the outgoing longwave radiation have been used to study the distribution of cloudiness and rainfall over the tropics. Annual and interannual variations are described, partially with the help of an ...

Thomas R. Heddinghaus; Arthur F. Krueger

1981-06-01T23:59:59.000Z

88

The Role of Longwave Radiation and Boundary Layer Thermodynamics in Forcing Tropical Surface Winds  

Science Conference Proceedings (OSTI)

This paper reveals major deficiencies of the existing intermediate climate models for tropical surface winds and elaborates the important roles of cloud-longwave radiational forcing and boundary layer thermodynamics in driving the tropical ...

Xiouhua Fu; Bin Wang

1999-04-01T23:59:59.000Z

89

The Relationship of Extratropical Outgoing Longwave Radiation to Monthly Geopotential Teleconnection Patterns  

Science Conference Proceedings (OSTI)

The relationship between low frequency variations in extratropical fields of outgoing longwave radiation (OLR) and geopotential teleconnection patterns as determined by rotated principal components (RPC) analysis of the NMC 500-mb heights is ...

Thomas P. Charlock; Fred G. Rose; T. Dale Bess; G. Louis Smith

1990-12-01T23:59:59.000Z

90

Determining Longwave Forcing and Feedback Using Infrared Spectra and GNSS Radio Occultation  

Science Conference Proceedings (OSTI)

The authors investigate whether combining a data type derived from radio occultation (RO) with the infrared spectral data in an optimal detection method improves the quantification of longwave radiative forcing and feedback. Signals derived from ...

Yi Huang; Stephen S. Leroy; James G. Anderson

2010-11-01T23:59:59.000Z

91

Accurate Radiometric Measurement of the Atmospheric Longwave Flux at theSea Surface  

Science Conference Proceedings (OSTI)

The errors in pyrgeometer measurements of the atmospheric longwave flux at the sea surface due to differential heating of the sensor dome relative to the body and to shortwave leakage through the dome are evaluated. Contrary to the findings of ...

Robin W. Pascal; Simon A. Josey

2000-09-01T23:59:59.000Z

92

On the Effects of Cumulus Dimensions on Longwave Irradiance and Heating Rate Calculations  

Science Conference Proceedings (OSTI)

A model of a cumulus cloud field, parameterized as right circular cylinders, has been used to estimate the uncertainties in longwave radiation calculations of irradiances and heating rates caused by neglecting the dimensions of the clouds. The ...

Robert G. Ellingson

1982-04-01T23:59:59.000Z

93

A Parameterization for Longwave Surface Radiation from Satellite Data: Recent Improvements  

Science Conference Proceedings (OSTI)

Several improvements have been made recently to the parameterization for surface longwave radiation described by Gupta. Model constants have been modified in order to use meteorological data from the International Satellite Cloud Climatology ...

Shashi K. Gupta; Wayne L. Darnell; Anne C. Wilber

1992-12-01T23:59:59.000Z

94

A Technique for Estimating Outgoing Longwave Radiation from HIRS Radiance Observations  

Science Conference Proceedings (OSTI)

A new technique for estimating outgoing longwave radiation from observations on the NOAA operational satellites has been developed from a regression analysis of radiation model calculations. The technique consists of a weighted sum of radiance in ...

Robert G. Ellingson; David J. Yanuk; Hai-Tien Lee; Arnold Gruber

1989-08-01T23:59:59.000Z

95

Decadal Climate Simulations Using Accurate and Fast Neural Network Emulation of Full, Longwave and Shortwave, Radiation  

Science Conference Proceedings (OSTI)

An approach to calculating model physics using neural network emulations, previously proposed and developed by the authors, has been implemented in this study for both longwave and shortwave radiation parameterizations, or to the full model ...

Vladimir M. Krasnopolsky; Michael S. Fox-Rabinovitz; Alexei A. Belochitski

2008-10-01T23:59:59.000Z

96

The Diurnal Cycle of Outgoing Longwave Radiation from Earth Radiation Budget Experiment Measurements  

Science Conference Proceedings (OSTI)

The diurnal cycle of outgoing longwave radiation (OLR) from the earth is analyzed by decomposing satellite observations into a set of empirical orthogonal functions (EOFs). The observations are from the Earth Radiation Budget Experiment (ERBE) ...

G. Louis Smith; David A. Rutan

2003-07-01T23:59:59.000Z

97

Long-Wave Dynamics of Sea Level Variations during Indian Ocean Dipole Events  

Science Conference Proceedings (OSTI)

Long-wave dynamics of the interannual variations of the equatorial Indian Ocean circulation are studied using an ocean general circulation model forced by the assimilated surface winds and heat flux of the European Centre for Medium-Range Weather ...

Dongliang Yuan; Hailong Liu

2009-05-01T23:59:59.000Z

98

On the Observed Near Cancellation between Longwave and Shortwave Cloud Forcing in Tropical Regions  

Science Conference Proceedings (OSTI)

Observations based on Earth Radiation Budget Experiment (ERBE) satellite data indicate that there is a near cancellation between tropical longwave and shortwave cloud forcing in regions of deep convective activity. Cloud forcing depends on both ...

J. T. Kiehl

1994-04-01T23:59:59.000Z

99

A Parameterization for Longwave Surface Radiation from Sun-Synchronous Satellite Data  

Science Conference Proceedings (OSTI)

A parameterization has been developed for computing downward, upward, and net longwave radiation at the earth's surface using meteorological data from NOAA's operational sun-synchronous satellites. The parameterization was developed using a ...

Shashi K. Gupta

1989-04-01T23:59:59.000Z

100

Downward Longwave Surface Radiation from Sun-Synchronous Satellite Data: Validation of Methodology  

Science Conference Proceedings (OSTI)

An extensive study has been carried out to validate a satellite technique for estimating downward longwave radiation at the surface. The technique, mostly developed earlier, uses operational sun-synchronous satellite data and a radiative transfer ...

Wayne L. Darnell; Shashi K. Gupta; W. Frank Staylor

1986-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Intraseasonal Circulation and Outgoing Longwave Radiation Modes During Northern Hemisphere Winter  

Science Conference Proceedings (OSTI)

An eigenvector analysis is used to characterize global-scale, intraseasonal variability in satellite-derived outgoing longwave radiation fields and NMC analyzed circulation fields. Five-day average covering November-March of 1974–75 through 1979–...

Klaus M. Weickmann

1983-09-01T23:59:59.000Z

102

Recent Changes in Downward Longwave Radiation at King Sejong Station, Antarctica  

Science Conference Proceedings (OSTI)

Effects of cloud, air temperature, and specific humidity on downward longwave irradiance and their long-term variabilities are examined by analyzing the measurements made at the King Sejong Station in the Antarctic Peninsula during the period of ...

Hi Ku Cho; Jhoon Kim; Yeonjin Jung; Yun Gon Lee; Bang Yong Lee

2008-11-01T23:59:59.000Z

103

Cloud, Surface Temperature, and Outgoing Longwave Radiation for the Period from 1979 to 1990  

Science Conference Proceedings (OSTI)

Quasi-biennial global, midlatitude, and tropical oscillations were observed using top-of-the-atmosphere outgoing longwave radiation (OLR), surface air temperature (SAT), and cloud amount for the period from 1979 to 1989. The in-phase quasi-...

H. Lee Kyle; Mitchell Weiss; Philip Ardanuy

1995-11-01T23:59:59.000Z

104

A Study of the Incoming Longwave Atmospheric Radiation from a Clear Sky  

Science Conference Proceedings (OSTI)

A band model for atmospheric absorption is used to calculate the incoming longwave atmospheric radiative flux for some typical clear sky conditions. The sky radiation is also measured using a specially-designed calorimetric apparatus over a wide ...

J. W. Ramsey; H. D. Chiang; R. J. Goldstein

1982-04-01T23:59:59.000Z

105

Observed Relationships between Arctic Longwave Cloud Forcing and Cloud Parameters Using a Neural Network  

Science Conference Proceedings (OSTI)

A neural network technique is used to quantify relationships involved in cloud–radiation feedbacks based on observations from the Surface Heat Budget of the Arctic (SHEBA) project. Sensitivities of longwave cloud forcing (CFL) to cloud parameters ...

Yonghua Chen; Filipe Aires; Jennifer A. Francis; James R. Miller

2006-08-01T23:59:59.000Z

106

The broadband digital divide and the economic benefits of mobile broadband for rural areas  

Science Conference Proceedings (OSTI)

Broadband is becoming increasingly important to national economies and the personal lives of users. However, broadband availability and adoption are not diffusing in rural and urban areas at the same rates. This article updates the rural broadband digital ... Keywords: Digital divide, Economic development, Fixed broadband, Interval censored Poisson estimation, Mobile broadband, Rural areas

James E. Prieger

2013-07-01T23:59:59.000Z

107

Residential Broadband, 2nd edition  

Science Conference Proceedings (OSTI)

From the Publisher:This comprehensive, accessible resource organizes and puts in context the complexities and variables that characterize full-scale deployment of residential broadband networks. This book provides valuable information and perspective ...

George Abe

1999-12-01T23:59:59.000Z

108

Broadband accelerator control network  

SciTech Connect

A broadband data communications network has been implemented at BNL for control of the Alternating Gradient Synchrotron (AG) proton accelerator, using commercial CATV hardware, dual coaxial cables as the communications medium, and spanning 2.0 km. A 4 MHz bandwidth Digital Control channel using CSMA-CA protocol is provided for digital data transmission, with 8 access nodes available over the length of the RELWAY. Each node consists of an rf modem and a microprocessor-based store-and-forward message handler which interfaces the RELWAY to a branch line implemented in GPIB. A gateway to the RELWAY control channel for the (preexisting) AGS Computerized Accelerator Operating system has been constructed using an LSI-11/23 microprocessor as a device in a GPIB branch line. A multilayer communications protocol has been defined for the Digital Control Channel, based on the ISO Open Systems Interconnect layered model, and a RELWAY Device Language defined as the required universal language for device control on this channel.

Skelly, J.; Clifford, T.; Frankel, R.

1983-01-01T23:59:59.000Z

109

Idealized Two-Dimensional Modeling of a Coastal Buoyancy Front, or River Plume, under Downwelling-Favorable Wind Forcing with Application to the Alaska Coastal Current  

Science Conference Proceedings (OSTI)

The cross-shelf structure of a buoyancy-driven coastal current, such as produced by a river plume, is modeled in a two-dimensional cross-shelf slice as a “wide” geostrophically balanced buoyancy front. Downwelling-favorable wind stress applied to ...

William J. Williams; Thomas J. Weingartner; Albert J. Hermann

2010-02-01T23:59:59.000Z

110

The Surface Downwelling Solar Radiation Surplus over the Southern Ocean in the Met Office Model: The Role of Midlatitude Cyclone Clouds  

Science Conference Proceedings (OSTI)

The authors study the role of clouds in the persistent bias of surface downwelling shortwave radiation (SDSR) in the Southern Ocean in the atmosphere-only version of the Met Office model. The reduction of this bias in the atmosphere-only version ...

A. Bodas-Salcedo; K. D. Williams; P. R. Field; A. P. Lock

2012-11-01T23:59:59.000Z

111

Surface Forcing of the Infrared Cooling Profile over the Tibetan Plateau. Part I: Influence of Relative Longwave Radiative Heating at High Altitude  

Science Conference Proceedings (OSTI)

The role of the Tibetan Plateau on the behavior of the surface longwave radiation budget is examined, and the behavior of the vertical profile of longwave cooling over the plateau, including its diurnal variation, is quantified. The investigation ...

Eric A. Smith; Lei Shi

1992-05-01T23:59:59.000Z

112

The Effect of Shape and Spatial Distribution of Cumulus Clouds on Longwave Irradiance  

Science Conference Proceedings (OSTI)

In the longwave part of the spectrum, clouds are generally modeled in GCMs as flat black plates. The true effective cloud cover for transmittance of infrared radiation may be larger or smaller than the fractional cloud cover normal to the surface ...

Rosemary M. Killen; Robert G. Ellingson

1994-07-01T23:59:59.000Z

113

Year-Round Observation of Longwave Radiative Flux Divergence in Greenland  

Science Conference Proceedings (OSTI)

Longwave radiative flux divergence within the lowest 50 m of the atmospheric boundary layer was observed during the Eidgenössische Technische Hochschule (ETH) Greenland Summit experiment. The dataset collected at 72°35?N, 38°30?W, 3203 m MSL is ...

S. W. Hoch; P. Calanca; R. Philipona; A. Ohmura

2007-09-01T23:59:59.000Z

114

On the Surface Temperature Sensitivity of the Reflected Shortwave, Outgoing Longwave, and Net Incident Radiation  

Science Conference Proceedings (OSTI)

The global-mean top-of-atmosphere incident solar radiation (ISR) minus the outgoing longwave radiation (OLR) and the reflected shortwave radiation (RSW) is the net incident radiation (NET). This study analyzes the global-mean NET sensitivity to a ...

Hartmut H. Aumann; Alexander Ruzmaikin; Ali Behrangi

2012-10-01T23:59:59.000Z

115

Assessing Stability of CERES-FM3 Daytime Longwave Unfiltered Radiance with AIRS Radiances  

Science Conference Proceedings (OSTI)

Clouds and the Earth’s Radiant Energy System (CERES) daytime longwave (LW) radiances are determined from the difference between a total (TOT) channel (0.3–200 ?m) measurement and a shortwave (SW) channel (0.3–5 ?m) measurement, while nighttime LW ...

Xianglei Huang; Norman G. Loeb; Huiwen Chuang

2012-03-01T23:59:59.000Z

116

Hollow Core Fiber Optics for Mid-Wave and Long-Wave Infrared Spectroscopy  

E-Print Network (OSTI)

Hollow Core Fiber Optics for Mid-Wave and Long-Wave Infrared Spectroscopy Jason M. Kriesel and testing of hollow core glass waveguides (i.e., fiber optics) for use in Mid-Wave Infrared (MWIR) and Long related applications, and fiber optics are a key enabling technology needed to improve the utility

117

CPU/GPU computing for long-wave radiation physics on large GPU clusters  

Science Conference Proceedings (OSTI)

Geoscience simulations rely heavily on high performance computing (HPC) systems. To date, many CPU/GPU heterogeneous HPC systems have been established on which many geoscience simulations have been performed. For most of these simulations on GPU clusters, ... Keywords: CPU/GPU computing, Long-wave radiation, MPI+OpenMP/CUDA, Tianhe-1A supercomputer, Workload distribution

Fengshun Lu; Junqiang Song; Xiaoqun Cao; Xiaoqian Zhu

2012-04-01T23:59:59.000Z

118

Clear-Sky Longwave Irradiance at the Earth’s Surface—Evaluation of Climate Models  

Science Conference Proceedings (OSTI)

An evaluation of the clear-sky longwave irradiance at the earth’s surface (LI) simulated in climate models and in satellite-based global datasets is presented. Algorithm-based estimates of LI, derived from global observations of column water ...

J. R. Garratt

2001-04-01T23:59:59.000Z

119

ARM - Datastreams - rad  

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

Datastreamsrad Datastreamsrad Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : RAD Radiation measurements at AMF/Niamey, Niger/S1 Active Dates 2006.01.13 - 2008.12.13 Measurement Categories Radiometric Originating Instrument Radiation Measurements at AMF (RAD) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Longwave broadband downwelling irradiance Downwelling Longwave Hemispheric Irradiance, Pyrgeometer W/m^2 down_long_hemisp ( time ) Downwelling Pyrgeometer Case Thermistor Resistance Kohms down_long_hemisp_case_resist ( time )

120

Broad-band beam buncher  

DOE Patents (OSTI)

A broad-band beam buncher is disclosed, comprising an evacuated housing, an electron gun therein for producing an electron beam, a buncher cavity having entrance and exit openings through which the beam is directed, grids across such openings, a source providing a positive DC voltage between the cavity and the electron gun, a drift tube through which the electron beam travels in passing through such cavity, grids across the ends of such drift tube, gaps being provided between the drift tube grids and the entrance and exit grids, a modulator for supplying an ultrahigh frequency modulating signal to the drift tube for producing velocity modulation of the electrons in the beam, a drift space in the housing through which the velocity modulated electron beam travels and in which the beam is bunched, and a discharge opening from such drift tube and having a grid across such opening through which the bunched electron beam is discharged into an accelerator or the like. The buncher cavity and the drift tube may be arranged to constitute an extension of a coaxial transmission line which is employed to deliver the modulating signal from a signal source. The extended transmission line may be terminated in its characteristic impedance to afford a broad-band response and the device as a whole designed to effect broad-band beam coupling, so as to minimize variations of the output across the response band.

Goldberg, David A. (Walnut Creek, CA); Flood, William S. (Berkeley, CA); Arthur, Allan A. (Martinez, CA); Voelker, Ferdinand (Orinda, CA)

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Broadband light-emitting diode  

DOE Patents (OSTI)

A broadband light-emitting diode. The broadband light-emitting diode (LED) comprises a plurality of III-V compound semiconductor layers grown on a semiconductor substrate, with the semiconductor layers including a pair of cladding layers sandwiched about a strained-quantum-well active region having a plurality of different energy bandgaps for generating light in a wavelength range of about 1.3-2 .mu.m. In one embodiment of the present invention, the active region may comprise a first-grown quantum-well layer and a last-grown quantum-well layer that are oppositely strained; whereas in another embodiment of the invention, the active region is formed from a short-period superlattice structure (i.e. a pseudo alloy) comprising alternating thin layers of InGaAs and InGaAlAs. The use a short-period superlattice structure for the active region allows different layers within the active region to be simply and accurately grown by repetitively opening and closing one or more shutters in an MBE growth apparatus to repetitively switch between different growth states therein. The broadband LED may be formed as either a surface-emitting LED or as an edge-emitting LED for use in applications such as chemical sensing, fiber optic gyroscopes, wavelength-division-multiplexed (WDM) fiber-optic data links, and WDM fiber-optic sensor networks for automobiles and aircraft.

Fritz, Ian J. (Albuquerque, NM); Klem, John F. (Sandia Park, NM); Hafich, Michael J. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

122

Broadband light-emitting diode  

DOE Patents (OSTI)

A broadband light-emitting diode is disclosed. The broadband light-emitting diode (LED) comprises a plurality of III-V compound semiconductor layers grown on a semiconductor substrate, with the semiconductor layers including a pair of cladding layers sandwiched about a strained-quantum-well active region having a plurality of different energy bandgaps for generating light in a wavelength range of about 1.3--2 {micro}m. In one embodiment of the present invention, the active region may comprise a first-grown quantum-well layer and a last-grown quantum-well layer that are oppositely strained; whereas in another embodiment of the invention, the active region is formed from a short-period superlattice structure (i.e. a pseudo alloy) comprising alternating thin layers of InGaAs and InGaAlAs. The use a short-period superlattice structure for the active region allows different layers within the active region to be simply and accurately grown by repetitively opening and closing one or more shutters in an MBE growth apparatus to repetitively switch between different growth states therein. The broadband LED may be formed as either a surface-emitting LED or as an edge-emitting LED for use in applications such as chemical sensing, fiber optic gyroscopes, wavelength-divisionmultiplexed (WDM) fiber-optic data links, and WDM fiber-optic sensor networks for automobiles and aircraft. 10 figs.

Fritz, I.J.; Klem, J.F.; Hafich, M.J.

1998-07-14T23:59:59.000Z

123

First Estimates of the Diurnal Variation of Longwave Radiation from the Multiple-Satellite Earth Radiation Budget Experiment (ERBE)  

Science Conference Proceedings (OSTI)

First results for diurnal cycles derived from the Earth Radiation Budget Experiment (ERBE) are presented for the combined Earth Radiation Budget Satellite (ERBS) and NOAA-9 spacecraft for April 1985. Regional scale longwave (LW) radiation data ...

Edwin F. Harrison; David R. Brooks; Patrick Minnis; Bruce A. Wielicki; W. Frank Staylor; Gary G. Gibson; David F. Young; Frederick M. Denn

1988-10-01T23:59:59.000Z

124

Intraseasonal (30–60 Day) Fluctuations of Outgoing Longwave Radiation and 250 mb Streamfunction during Northern Winter  

Science Conference Proceedings (OSTI)

Ten years of outgoing longwave radiation (OLR) and 250 mb circulation data are used in a statistical study which concentrates on 28–72 day fluctuations during Northern Hemisphere winter. The results of spectral and cross-spectral analyses show ...

Klaus M. Weickmann; Glenn R. Lussky; John E. Kutzbach

1985-06-01T23:59:59.000Z

125

Satellite-based reconstruction of the tropical oceanic clear sky outgoing longwave radiation and comparison with climate models  

Science Conference Proceedings (OSTI)

The changes of the outgoing longwave radiation (OLR) in clear-sky conditions have been calculated using High-resolution Infrared Radiation Sounder (HIRS) observations from 1979 to 2004. After applying corrections for satellite orbital drift and ...

Guillaume Gastineau; Brian J. Soden; Darren L. Jackson; Chris W. O’Dell

126

Comparison of Spectrally Resolved Outgoing Longwave Radiation over the Tropical Pacific between 1970 and 2003 Using IRIS, IMG, and AIRS  

Science Conference Proceedings (OSTI)

The observation of changes in the earth’s spectrally resolved outgoing longwave radiation (OLR) provides a direct method of determining changes in the radiative forcing of the climate system. An earlier study showed that satellite-observed ...

J. A. Griggs; J. E. Harries

2007-08-01T23:59:59.000Z

127

Observational Characterization of the Downward Atmospheric Longwave Radiation at the Surface in the City of São Paulo  

Science Conference Proceedings (OSTI)

This work describes the seasonal and diurnal variations of downward longwave atmospheric irradiance (LW) at the surface in São Paulo, Brazil, using 5-min-averaged values of LW, air temperature, relative humidity, and solar radiation observed ...

Eduardo Barbaro; Amauri P. Oliveira; Jacyra Soares; Georgia Codato; Maurício J. Ferreira; Primož Mlakar; Marija Z. Božnar; João F. Escobedo

2010-12-01T23:59:59.000Z

128

Short-Term Climate Variability and Atmospheric Teleconnections from Satellite-Observed Outgoing Longwave Radiation. Part I: Simultaneous Relationships  

Science Conference Proceedings (OSTI)

Satellite-inferred short-term climate variability and atmospheric teleconnections are studied using seven years (1974–81) of Outgoing Longwave Radiation (OLR) data from NOAA polar orbiters. This study utilizes composite, partition-of-variance and ...

Ka-Ming Lau; Paul H. Chan

1983-12-01T23:59:59.000Z

129

Short-Term Climate Variability and Atmospheric Teleconnections from Satellite-Observed Outgoing Longwave Radiation. Part II: Lagged Correlations  

Science Conference Proceedings (OSTI)

As a sequel to Part I of this study, lagged relationships in atmospheric teleconnections associated with outgoing longwave radiation (OLR) are investigated using Lagged Cross Correlations (LCC). The feasibility of extratropical seasonal-to-...

Ka-Ming Lau; Paul H. Chan

1983-12-01T23:59:59.000Z

130

A Ten-year Monthly Data Set of Outgoing Longwave Radiation from Nimbus-6 and Nimbus-7 Satellites  

Science Conference Proceedings (OSTI)

Monthly mean outgoing longwave radiation (OLR) measurements in the form of global contour maps and coefficients of spherical-harmonic functions for each month of the 10-year period July 1975 through October 1985 have recently been completed. One ...

T. Dale Bess; G. Louis Smith; Thomas P. Charlock

1989-05-01T23:59:59.000Z

131

Spectral Longwave Emission in the Tropics: FTIR Measurement at the Sea Surface and Comparison with Fast Radiation Codes  

Science Conference Proceedings (OSTI)

Longwave emission by the tropical western Pacific atmosphere has been measured at the ocean surface by a Fourier Transform Infrared (FTIR) spectroradiometer deployed aboard the research vessel John Vickers as part of the Central Equatorial ...

Dan Lubin; David Cutchin; William Conant; Hartmut Grassl; Ulrich Schmid; Werner Biselli

1995-02-01T23:59:59.000Z

132

Comparison of the Highly Reflective Cloud and Outgoing Longwave Radiation Datasets for Use in Estimating Tropical Deep Convection  

Science Conference Proceedings (OSTI)

Currently, there are two long-term satellite-derived datasets most are frequently used as indices for tropical deep convection. These are the Outgoing Longwave Radiation (OLR) and Highly Reflective Cloud (HRC) datasets. Although both of these ...

Duane E. Waliser; Nicholas E. Graham; Catherine Gautier

1993-02-01T23:59:59.000Z

133

Introducing an Absolute Cavity Pyrgeometer for Improving the Atmospheric Longwave Irradiance Measurement (Presentation)  

SciTech Connect

Advancing climate change research requires accurate and traceable measurement of the atmospheric longwave irradiance. Current measurement capabilities are limited to an estimated uncertainty of larger than +/- 4 W/m2 using the interim World Infrared Standard Group (WISG). WISG is traceable to the Systeme international d'unites (SI) through blackbody calibrations. An Absolute Cavity Pyrgeometer (ACP) is being developed to measure absolute outdoor longwave irradiance with traceability to SI using the temperature scale (ITS-90) and the sky as the reference source, instead of a blackbody. The ACP was designed by NREL and optically characterized by the National Institute of Standards and Technology (NIST). Under clear-sky and stable conditions, the responsivity of the ACP is determined by lowering the temperature of the cavity and calculating the rate of change of the thermopile output voltage versus the changing net irradiance. The absolute atmospheric longwave irradiance is then calculated with an uncertainty of +/- 3.96 W/m2 with traceability to SI. The measured irradiance by the ACP was compared with the irradiance measured by two pyrgeometers calibrated by the World Radiation Center with traceability to the WISG. A total of 408 readings was collected over three different clear nights. The calculated irradiance measured by the ACP was 1.5 W/m2 lower than that measured by the two pyrgeometers that are traceable to WISG. Further development and characterization of the ACP might contribute to the effort of improving the uncertainty and traceability of WISG to SI.

Reda, I.; Hansen, L.; Zeng, J.

2012-08-01T23:59:59.000Z

134

Identifying best practices for supporting broadband growth: Methodology and analysis  

Science Conference Proceedings (OSTI)

This paper presents a methodology for identifying best practices followed by various countries worldwide for supporting broadband growth. It also investigates and analyzes these practices using data concerning broadband penetration, access technologies, ... Keywords: Best practices, Broadband, Telecommunications policies

C. Bouras; E. Giannaka; Thrasyvoulos Tsiatsos

2009-07-01T23:59:59.000Z

135

Factors determining municipal broadband strategies across Europe  

Science Conference Proceedings (OSTI)

Recognizing that high-speed broadband connectivity emerges as a key element for growth, city authorities engage in fiber access deployments to empower their local communities in the digital economy. Currently, a growing number of municipal fiber projects ... Keywords: Broadband, Europe, Infrastructure development, Municipal strategies

Costas Troulos; Vasilis Maglaris

2011-10-01T23:59:59.000Z

136

Implementing the National Broadband Plan by Empowering Consumers...  

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

Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Implementing the National Broadband Plan by...

137

Clough-SA  

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

Longwave Broadband QME Based on ARM Longwave Broadband QME Based on ARM Pyrgeometer and AERI Measurements S. A. Clough, A. D. Brown, C. Andronache, and E. J. Mlawer Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts T. R. Shippert and D. D. Turner Pacific Northwest National Laboratory Richland, Washington D. C. Tobin, H. E. Revercomb, and R. O. Knuteson University of Maryland College Park, Maryland Introduction Accurate modeling of the downwelling longwave flux at the surface is critical to our understanding of a number of important issues: the earth's energy balance; processes at the atmosphere's lower boundary including ice melt and ocean forcing; and evaluating our ability to model atmospheric fluxes for dynamical models including numerical weather prediction and climate models. Under the Atmospheric

138

ARM - Campaign Instrument - smart-rad  

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

govInstrumentssmart-rad govInstrumentssmart-rad Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Broadband Radiometers from NASA SMART Trailer (SMART-RAD) Instrument Categories Radiometric Campaigns Application of the ARM Mobile Facility (AMF) to Study the Aerosol Indirect Effects in China [ Download Data ] Shouxian, Anhui, China; Mobile Facility, 2008.05.15 - 2008.12.29 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Longwave broadband downwelling irradiance Shortwave broadband total downwelling irradiance

139

El Niño and Outgoing Longwave Radiation: Observations from Nimbus-7 ERB  

Science Conference Proceedings (OSTI)

Five years of broad-band earth radiation budget measurements taken by the Nimbus-7 ERB experiment have been archived. This period encompasses the 1982/83 El Niño/Southern Oscillation event, which reached a peak near the beginning of the fifth ...

Philip E. Ardanuy; H. Lee Kyle

1986-02-01T23:59:59.000Z

140

The climatological record of clear-sky longwave radiation at the Earth's surface: evidence for water vapour feedback?  

Science Conference Proceedings (OSTI)

An increase in global surface temperature of between 1.4 K and 5.8 K is expected to occur by 2100 due to a doubling of the global concentration of CO2. Associated with this predicted surface warming will be an increase in the downwards longwave ...

F. Prata

2008-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Multi-Dimensional Effects in Longwave Radiative Forcing of PBL Clouds  

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

Multi-Dimensional Effects in Longwave Radiative Forcing of PBL Clouds D. B. Mechem and Y. L. Kogan Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma M. Ovtchinnikov Pacific Northwest National Laboratory Richland, Washington K. F. Evans University of Colorado Boulder, Colorado A. B. Davis Los Alamos National Laboratory Los Alamos, New Mexico R. F. Cahalan National Aeronautic and Space Administration Goddard Space Flight Center Greenbelt, Maryland E. E. Takara and R. G. Ellingson Florida State University Tallahassee, Florida 1. Introduction Numerical cloud models nearly universally employ one-dimensional (1D) treatments of radiative transfer (RT). Radiative transfer is typically implemented as a 2- or 4-stream approximation to the

142

Narrowband to Broadband Conversion with Spatially Autocorrelated Reflectance Measurements  

Science Conference Proceedings (OSTI)

A new technique for estimating broadband reflectance from Advanced Very High-Resolution Radiometer (AVHRR) narrowband reflectances in channel 1 and 2 is developed. The data used are simultaneous and coincident narrowband and broadband ...

Zhanqing Li; H. G. Leighton

1992-05-01T23:59:59.000Z

143

Municipal wireless mesh networks as a competitive broadband delivery platform  

E-Print Network (OSTI)

Recently there has been a growing interest in deploying Wireless Mesh Networks by municipalities. This interest stems from the desire to provide broadband connectivity to users lacking access to broadband alternatives. The ...

Hassan-Ali, Mudhafar

2007-01-01T23:59:59.000Z

144

A numerical approach : broadband technologies for efficient Magnetic Resonance Imaging  

E-Print Network (OSTI)

(cont.) independent receiver coils in parallel or time-axis compression, can be cast as complementary to broadband MRI encoding. This affords broadband non-Fourier MRI with time efficiencies over current fast MRI methods. ...

Mitsouras, Dimitrios, 1976-

2004-01-01T23:59:59.000Z

145

We the people and the right to broadband  

Science Conference Proceedings (OSTI)

The push for universal broadband to rural America could be this century's stab at rural electrification and phone service.

Laurie Rowell

2009-03-01T23:59:59.000Z

146

Broadband municipal optical networks in Greece: A suitable business model  

Science Conference Proceedings (OSTI)

This paper proposes a business model for the optimal exploitation of the currently developing broadband metropolitan area networks in Greece. Having recorded and examined relevant international practices, we describe in detail the way that these networks ... Keywords: Broadband infrastructure, Broadband networks business models, Dark fibre, Municipal networks

Christos Bouras; Apostolos Gkamas; John Papagiannopoulos; George Theophilopoulos; Thrasyvoulos Tsiatsos

2009-11-01T23:59:59.000Z

147

Multilevel governance and broadband infrastructure development: Evidence from Canada  

Science Conference Proceedings (OSTI)

This paper investigates the contributions of digital infrastructure policies of provincial governments in Canada to the development of broadband networks. Using measurements of broadband network speeds between 2007 and 2011, the paper analyzes potential ... Keywords: Broadband networks, Essential facilities, Federalism, Telecommunications policy

Reza Rajabiun, Catherine A. Middleton

2013-10-01T23:59:59.000Z

148

Pricing and Security of ResidentialPricing and Security of Residential Broadband AccessBroadband Access  

E-Print Network (OSTI)

and Department of Electrical Engineering Pennsylvania State University kesidis@engr.psu.edu Carlos Kirjner McKinsey and Company, New York Carlos_Kirjner@Mckinsey.com #12;2 OutlineOutline Growth in residential broadband access

Yener, Aylin

149

A broadband folded Gilbert cell CMOS mixer  

Science Conference Proceedings (OSTI)

A folded Gilbert cell mixer was implemented in 0.13 ?m complementary metal oxide semiconductor (CMOS) technology. The downconversion mixer is designed for 5---6 GHz radio frequency (RF) band and an intermediate frequency (IF) of 500 MHz. A voltage ... Keywords: Broadband, CMOS, Folded Gilbert cell, Low power, Mobile communications

Marko Krcmar; Georg Boeck

2010-07-01T23:59:59.000Z

150

Broadband Multimedia Information Service for European Parliaments  

Science Conference Proceedings (OSTI)

This paper presents a distributed broadband multimedia information service that is realised within the project EPRI-COM that is supported by the European Union within the ACTS program. The primary idea of the EPRI-COM information service is to provide ... Keywords: Multimedia on the Internet, Digital Libraries, Network and resource management

Karsten Morisse; Francisco Cortes; Reinhard Lüling

1999-06-01T23:59:59.000Z

151

Broadband ML estimation under model order uncertainty  

Science Conference Proceedings (OSTI)

The number of signals hidden in data plays a crucial role in array processing. When this information is not available, conventional approaches apply information theoretic criteria or multiple hypothesis tests to simultaneously estimate model order and ... Keywords: Broadband signals, Direction of arrival, Maximum likelihood estimation, Overparameterized models, Unknown number of signals

Pei-Jung Chung; Mats Viberg; Christoph F. Mecklenbräuker

2010-05-01T23:59:59.000Z

152

In the Matter of National Broadband Plan Request for Information:  

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

In the Matter of National Broadband Plan Request for Information: In the Matter of National Broadband Plan Request for Information: Communications Requirements In the Matter of National Broadband Plan Request for Information: Communications Requirements The American Public Power Association ("APPA") appreciates this opportunity to respond to the Department of Energy ("the Department" or "DOE") regarding its Request for Information ("RFI") on Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy. In the Matter of National Broadband Plan Request for Information: Communications Requirements More Documents & Publications Communications Requirements of Smart Grid Technologies RE: NBP RFI: Communications Requirements

153

A Field Intercomparison Technique to Improve the Relative Accuracy of Longwave Radiation Measurements and an Evaluation of CASES-99 Pyrgeometer Data Quality  

Science Conference Proceedings (OSTI)

Techniques for improving the relative accuracy of longwave radiation measurements by a set of pyrgeometers [the Eppley Laboratory Precision Infrared Radiometer (Model PIR)] are presented using 10 PIRs from the 1999 Cooperative Atmosphere–Surface ...

S. P. Burns; J. Sun; A. C. Delany; S. R. Semmer; S. P. Oncley; T. W. Horst

2003-03-01T23:59:59.000Z

154

The Sensitivity of the Outgoing Longwave Radiation to Surface Temperature: Modeling the Opacity Feedback and Experiments with a Variable Cloud-Top Temperature Provision  

Science Conference Proceedings (OSTI)

An efficient longwave scheme for climate models originally suggested by Sasamori is modified to correctly simulate the water vapor-temperature feedback mechanism. It is found that the modified scheme with a fixed cloud-top altitude (FCA) ...

Binyamin U. Neeman; Joachim H. Joseph; George Ohring

1987-10-01T23:59:59.000Z

155

Temperature–Moisture Biases in ECMWF Analyses Based on Clear Sky Longwave Simulations Constrained by SSMI and MSU Measurements and Comparisons to ERBE Estimates  

Science Conference Proceedings (OSTI)

Clear sky longwave radiation fluxes for the summer of 1988 and winter of 1989 have been simulated with a radiative transfer model that includes detailed treatment of atmospheric gas absorption. The input data to the model are humidity and ...

Byung-Ju Sohn

1994-11-01T23:59:59.000Z

156

A study of longwave radiation codes for climate studies: Validation with ARM observations and tests in general circulation models. Final report, September 15, 1990--October 31, 1994  

SciTech Connect

DOE has launched a major initiative -- the Atmospheric Radiation Measurements (ARM) Program -- directed at improving the parameterization of the physics governing cloud and radiative processes in general circulation models (GCMs). One specific goal of ARM is to improve the treatment of radiative transfer in GCMs under clear-sky, general overcast and broken cloud conditions. In 1990, the authors proposed to contribute to this goal by attacking major problems connected with one of the dominant radiation components of the problem -- longwave radiation. In particular, their long-term research goals are to: develop an optimum longwave radiation model for use in GCMs that has been calibrated with state-of-the-art observations, assess the impact of the longwave radiative forcing in a GCM, determine the sensitivity of a GCM to the radiative model used in it, and determine how the longwave radiative forcing contributes relatively when compared to shortwave radiative forcing, sensible heating, thermal advection and expansion.

Ellingson, R.G.; Baer, F.

1998-09-01T23:59:59.000Z

157

A Systematic Study of Longwave Radiative Heating and Cooling within Valleys and Basins Using a Three-Dimensional Radiative Transfer Model  

Science Conference Proceedings (OSTI)

The Monte Carlo code for the physically correct tracing of photons in cloudy atmospheres (MYSTIC) three-dimensional radiative transfer model was used in a parametric study to determine the strength of longwave radiative heating and cooling in ...

Sebastian W. Hoch; C. David Whiteman; Bernhard Mayer

2011-12-01T23:59:59.000Z

158

Effects of the Choice of Meteorological Data on a Radiation Model Simulation of the NOAA Technique for Estimating Outgoing Longwave Radiation from Satellite Radiance Observations  

Science Conference Proceedings (OSTI)

The technique used by NOAA to estimate the outgoing longwave flux from 10 ?m window radiance observations has been reexamined because the data that result from the application of the empirically determined regression equation are systematically ...

Robert G. Ellingson; David J. Yanuk; Arnold Gruber

1989-08-01T23:59:59.000Z

159

Temporal Variations of Satellite-Observed Outgoing Longwave Radiation over the Winter Monsoon Region. Part II: Short-Period (4–6 Day) Oscillations  

Science Conference Proceedings (OSTI)

Empirical orthogonal function analysis was applied to outgoing longwave radiation (OLR) data over three limited regions during the three winters of 1974–75, 1975–76 and 1976–77. Regional composite maps were constructed by truncating the ...

Takio Murakami

1980-04-01T23:59:59.000Z

160

Short-Term Basin-Scale Streamflow Forecasting Using Large-Scale Coupled Atmospheric–Oceanic Circulation and Local Outgoing Longwave Radiation  

Science Conference Proceedings (OSTI)

This paper investigates the use of large-scale circulation patterns (El Niño–Southern Oscillation and the equatorial Indian Ocean Oscillation), local outgoing longwave radiation (OLR), and previous streamflow information for short-term (weekly) ...

Rajib Maity; S. S. Kashid

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Using Narrow and Wide Field of View Instruments to Evaluate Longwave Parameterizations for Fair Weather Cumulus Cloud Fields  

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

Using Narrow and Wide Field of View Instruments to Using Narrow and Wide Field of View Instruments to Evaluate Longwave Parameterizations for Fair Weather Cumulus Cloud Fields E. E. Takara and R. G. Ellingson Department of Meteorology Florida State University Tallahassee, Florida Introduction Full blown three-dimensional (3D) radiation calculations for broken cloud fields consume too much time and computing resources to be included in climate models. The 3D effects can be approximated by effective cloud fractions which reduce the three-dimensional calculation to an average of plane parallel solutions - a much easier problem. For broken cloud conditions, the longwave flux (F) can be written as the weighted average of clear and overcast fluxes: overcast e clear e F N )F N 1 ( F (1) F clear is the clear-sky flux; the flux that would occur if the broken cloud field was removed. F

162

Magnetic Materials for Broadband Transmission Line  

E-Print Network (OSTI)

The author’s series of articles on broadband transmission line transformers (TLTs) concludes with these notes on magnetic materials and the properties that are important for best performance Ferrite and iron powder magnetic materials were developed to support a wide range of components, including inductors, EMI suppressors, conventional transformers and transmission line transformers (TLTs). This article deals with transmission line transformers, presenting the observations and conclusions of the author, reached after extensive experimental research into the behavior and performance of these devices in broadband applications. Figure 1 · The three transformers used in comparing the performance of the autotransformer and the transmission line transformer. At the top left is an autotransformer; at the top right is the transmission line transformer, while at the bottom is a transmission line transformer without a ferrite core. All transformers had a total of 10 turns.

Jerry Sevick

2005-01-01T23:59:59.000Z

163

Broadband over Power Lines (BPL): FCC Emissions Compliance Guidelines  

Science Conference Proceedings (OSTI)

Broadband over power lines (BPL, a.k.a. broadband PLC) has been heralded as an opportunity for electric companies to enhance internal communication and control while delivering broadband service to areas where existing services are unavailable. The Federal Communications Commission (FCC) has published new regulations limiting radio frequency (RF) emissions from BPL equipment. This EPRI Technical Update provides an overview of the "FCC Report & Order 04-245" on BPL and gives guidance and details on the te...

2005-06-21T23:59:59.000Z

164

A survey on emerging broadband wireless access technologies  

Science Conference Proceedings (OSTI)

Wireless broadband technologies provide ubiquitous broadband access to wireless users, enabling services that were available only to wireline users. In this paper, we summarize emerging wireless broadband access technologies, ranging from WLANs to satellite ... Keywords: HAPs, HiperACCESS, HiperLAN, HiperMAN, IEEE 802.11, IEEE 802.16, IEEE 802.20, IEEE 802.22, Satellite, WLAN, WMAN, WWAN, WiBro, WiFi, WiMAX

Mehmet S. Kuran; Tuna Tugcu

2007-08-01T23:59:59.000Z

165

splitt(2)-99.PDF  

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

Improvement in the Assessment of SIRS Broadband Improvement in the Assessment of SIRS Broadband Longwave Radiation Data Quality M. E. Splitt University of Utah Salt Lake City, Utah C. P. Bahrmann Cooperative Institute for Meteorological Satellite Studies University of Oklahoma Norman, Oklahoma Introduction Validation of the performance of the Solar Infrared Station (SIRS) pyrgeometers is being conducted for the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP). Cloud and Radiation Testbed (CART) site extended facilities (EFs). Improvements to this effort include comparison of the downwelling longwave irradiance to estimates from several published algorithms based on surface meteorological conditions (including temperature, vapor pressure, and the clearness index). The algorithms provide estimates for clear skies, overcast skies, and all-sky conditions (during daylight

166

The Political Economies of Broadband Development in Korea and Japan  

E-Print Network (OSTI)

NCA), Informatization White Paper 2004: Broadband IT Korea (FTTH was 95% (MIC, “White Paper,” 2003). 67. See Kushida, “and communications white paper 2006] (Tokyo: MIC, 2006), p.

Kushida, Kenji; Oh, Seung-Youn

2007-01-01T23:59:59.000Z

167

Calibrated Broadband DC-Coupled High Impedance Pickoff ...  

Craig E. Deibele, Brian Link, and Vladimir V. Peplov, Calibrated Broadband DC-Coupled High Impedance Pickoff Circuit for Remote Monitoring

168

DRAFT A New Measure of Residential Broadband Availability  

E-Print Network (OSTI)

The only comprehensive published indicator of residential broadband availability in the US is number of providers in each zip code, as reported by the Federal Communications Commission (FCC). This measure has been widely used in academic and policy research to assess availability and to identify under-served areas, but it is acknowledged to be flawed and is often misinterpreted. This paper develops an alternative measure of residential broadband availability. Using the December 2005 FCC data and individual broadband adoption data from Forrester Research, the paper estimates a relationship between the number of providers in a zip code and the level of residential broadband availability in the zip code. Broadband availability is estimated to be 53 % in zip codes with 1-3 providers, rising to 100 % in zip codes with 14 or more providers. Aggregating these estimates at the national level implies that broadband was available to 86 % of households in December 2005. Availability was highest in southern and western metropolitan areas like Miami and San Jose. Using these estimates of availability, population density and average income both have positive and highly statistically significant effects on broadband supply. The results provide a user-friendly tool to help policymakers assess broadband availability. The estimates are also useful for future research about the effects of broadband availability.

Jed Kolko

2007-01-01T23:59:59.000Z

169

Re: DOE Request for Information - Implementing the National Broadband...  

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

requirements of utilities, including, but not limited to, the requirements of the Smart Grid in an effort to implement certain recommendations of the National Broadband...

170

Implementing the National Broadband Plan by Empowering Consumers...  

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

Privacy Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy The United States Telecom Association...

171

Re: DOE Request for Information - Implementing the National Broadband...  

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

Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy Re: DOE Request for Information - Implementing the National Broadband...

172

Re: DOE Request for Information - Implementing the National Broadband...  

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

requirements of utilities, including, but not limited to, the requirements of the Smart Grid, in an effort to implement certain recommendations of the National Broadband...

173

Re: Implementing the National Broadband Plan by Empowering Consumers...  

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

Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Re: Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data...

174

DOE Request for Information - Implementing the National Broadband...  

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

Information - Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy DOE Request for Information -...

175

Research Highlight  

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

Trends in Downwelling Longwave Radiation over SGP Download a printable PDF Submitter: Gero, J., University of Wisconsin Turner, D. D., National Oceanic and Atmospheric...

176

Atmospheric Longwave Irradiance Uncertainty: Pyrgeometers Compared to an Absolute Sky-Scanning Radiometer, Atmospheric Emitted Radiance Interferometer, and Radiative Transfer Model Calculations  

SciTech Connect

Because atmospheric longwave radiation is one of the most fundamental elements of an expected climate change, there has been a strong interest in improving measurements and model calculations in recent years. Important questions are how reliable and consistent are atmospheric longwave radiation measurements and calculations and what are the uncertainties? The First International Pyrgeometer and Absolute Sky-scanning Radiometer Comparison, which was held at the Atmospheric Radiation Measurement program's Souther Great Plains site in Oklahoma, answers these questions at least for midlatitude summer conditions and reflects the state of the art for atmospheric longwave radiation measurements and calculations. The 15 participating pyrgeometers were all calibration-traced standard instruments chosen from a broad international community. Two new chopped pyrgeometers also took part in the comparison. And absolute sky-scanning radiometer (ASR), which includes a pyroelectric detector and a reference blackbody source, was used for the first time as a reference standard instrument to field calibrate pyrgeometers during clear-sky nighttime measurements. Owner-provided and uniformly determined blackbody calibration factors were compared. Remarkable improvements and higher pyrgeometer precision were achieved with field calibration factors. Results of nighttime and daytime pyrgeometer precision and absolute uncertainty are presented for eight consecutive days of measurements, during which period downward longwave irradiance varied between 260 and 420 W m-2. Comparisons between pyrgeometers and the absolute ASR, the atmospheric emitted radiance interferometer, and radiative transfer models LBLRTM and MODTRAN show a surprisingly good agreement of <2 W m-2 for nighttime atmospheric longwave irradiance measurements and calculations.

Philipona, J. R.; Dutton, Ellsworth G.; Stoffel, T.; Michalsky, Joseph J.; Reda, I.; Stifter, Armin; Wendling, Peter; Wood, Norm; Clough, Shepard A.; Mlawer, Eli J.; Anderson, Gail; Revercomb, Henry E.; Shippert, Timothy R.

2001-06-04T23:59:59.000Z

177

ARM - Publications: Science Team Meeting Documents  

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

Aircraft Measurements of Spectral and Broadband Shortwave Albedo from the Aircraft Measurements of Spectral and Broadband Shortwave Albedo from the NASA Langley OV-10 Smith, W.L., Jr.(a), Charlock, T.P.(a), Roback, V.E.(a), Rutledge, C.K.(b), and Zhang, T.P.(b), NASA Langley Research Center (a), Analytical Services and Materials, Inc. (b) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting In order to validate and improve surface radiative fluxes derived as part of the Clouds and the Earth's Radiant Energy System (CERES) program, The CERES Fixed-wing Airborne Radiometer (CFAR) was developed to make measurements of upwelling and downwelling shortwave (spectral and broadband) and longwave (broadband) radiative fluxes. The CFAR consists of an OV-10A Bronco twin-turboprop, originally developed for military applications but chosen by NASA for atmospheric radiation measurements

178

Concentration, incumbency, and interconnection: broadband development and the lessons of history  

Science Conference Proceedings (OSTI)

With recent investments in broadband network development, policymakers have devoted new attention and resources to the social, economic, and political questions surrounding broadband development. While progressive policy in this space necessarily depends ... Keywords: broadband, concentration, incumbency, infrastructure, interconnection, policy, telecommunications

Alissa Centivany; Steven Jackson

2012-02-01T23:59:59.000Z

179

The Broadband Afterglow of GRB980703  

E-Print Network (OSTI)

We present radio observations of the afterglow of the bright gamma-ray burst GRB980703 made between one day and one year after the burst. These data are combined with published late-time radio measurements and existing optical, near-infrared (NIR) and X-ray observations to create a comprehensive broadband dataset for modeling the physical parameters of the outflow. While a wind-stratified medium cannot be ruled out statistically, it requires a high fraction of the shock energy in the electrons, and so is not favored on theoretical grounds. Instead, the data are consistent with a fireball model in which the ejecta are collimated and expanding into a constant density medium. The radio data cannot be fit with an isotropic shock but instead require a jet break at ~ 3.5 days, not seen at optical wavelengths due to the presence of a a bright host galaxy. The addition of the full radio dataset constrains the self-absorption frequency, giving an estimate of the circumburst density of n ~ 30 cm^-3, a value which differs substantially from previous estimates. This result is consistent with the growing number of GRB afterglows for which broadband modeling yields n ~= 0.1-100 cm^-3, with a typical value ~ 10 cm^-3.

D. A. Frail; S. A. Yost; E. Berger; F. A. Harrison; R. Sari; S. R. Kulkarni; G. B. Taylor; J. S. Bloom; D. W. Fox; G. H. Moriarty-Schieven; P. A. Price

2003-01-22T23:59:59.000Z

180

Proposed high speed packet switch for broadband integrated networks  

Science Conference Proceedings (OSTI)

The design of a high speed, broadband packet switch with two priority levels for application in integrated voice/data networks is presented. The packet switch can efficiently cope with 128 byte packets converging on it from eight 140 Mbit/s dynamic time ... Keywords: backbone network, broadband integrated services digital networks, high speed packet switch, voice/data integration

Krishna Thilakam; Ashok Jhunjhunwala

1989-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Microsoft Word - Broadband Over Power Lines_FINAL.06.01.10.doc  

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

Broadband over Powerlines Can Accelerate the Transmission Smart Grid May 25, 2010 DOENETL-20101418 Broadband Over Power Lines Could Accelerate the Transmission Smart Grid...

182

A study of longwave radiation codes for climate studies: Validation with ARM observations and tests in general circulation models  

SciTech Connect

Research by the US Department of Energy (DOE) has shown that cloud radiative feedback is the single most important effect determining the magnitude of possible climatic responses to human activity. However, these effects are still not known at the levels needed for climate prediction. Consequently, DOE has launched a major initiative-- the Atmospheric Radiation Measurements (ARM) Program -- directed at improving the parameterization of the physics governing cloud and radiative processes in general circulation models (GCM's). One specific goal of ARM is to improve the treatment of radiative transfer in GCM's under clear-sky, general overcast and broken cloud conditions. Our approach to developing the radiation model will be to test existing models in an iterative, predictive fashion. We will supply the Clouds and Radiative Testbed (CART) with a set of models to be compared with operationally observed data. The differences we find will lead to the development of new models to be tested with new data. Similarly, our GCM studies will use existing GCM's to study the radiation sensitivity problem. We anticipate that the outcome of this approach will provide both a better longwave radiative forcing algorithm and a better understanding of how longwave radiative forcing influences the equilibrium climate of the atmosphere.

Ellingson, R.G.; Baer, F.

1992-01-01T23:59:59.000Z

183

ARM - Measurement - Shortwave broadband direct normal irradiance  

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

normal irradiance normal irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband direct normal irradiance The rate at which radiant energy in broad bands of wavelengths shorter than approximately 4{mu}m, that comes directly from the Sun without being scattered or absorbed in the atmosphere, passes through a unit area perpendicular to the direction from the Sun. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments

184

Broadband phase-preserved optical elevator  

E-Print Network (OSTI)

Phase-preserved optical elevator is an optical device to lift up an entire plane virtually without distortion in light path or phase. Using transformation optics, we have predicted and observed the realization of such a broadband phase-preserved optical elevator, made of a natural homogeneous birefringent crystal without resorting to absorptive and narrowband metamaterials involving time-consuming nano-fabrication. In our demonstration, the optical elevator is designed to lift a sheet upwards, and the phase is verified to be preserved always. The camouflage capability is also demonstrated in the presence of adjacent objects of the same scale at will. The elevating device functions in different surrounding media over the wavelength range of 400-700 nm. Our work opens up prospects for studies of light trapping, solar energy, illusion optics, communication, and imaging.

Yuan Luo; Tiancheng Han; Baile Zhang; Cheng-Wei Qiu; George Barbastathis

2011-09-30T23:59:59.000Z

185

Analyzing the effect of the longwave emissivity and solar reflectance of building envelopes on energy-saving in buildings in various climates  

Science Conference Proceedings (OSTI)

A dynamic computer simulation is carried out in the climates of 35 cities distributed around the world. The variation of the annual air-conditioning energy loads due to changes in the longwave emissivity and the solar reflectance of the building envelopes is studied to find the most appropriate exterior building finishes in various climates (including a tropical climate, a subtropical climate, a mountain plateau climate, a frigid-temperate climate and a temperate climate). Both the longwave emissivity and the solar reflectance are set from 0.1 to 0.9 with an interval of 0.1 in the simulation. The annual air-conditioning energy loads trends of each city are listed in a chart. The results show that both the longwave emissivity and the solar reflectance of building envelopes play significant roles in energy-saving for buildings. In tropical climates, the optical parameters of the building exterior surface affect the building energy-saving most significantly. In the mountain plateau climates and the subarctic climates, the impacts on energy-saving in buildings due to changes in the longwave emissivity and the solar reflectance are still considerable, but in the temperate continental climates and the temperate maritime climates, only limited effects are seen. (author)

Shi, Zhiyang; Zhang, Xiong [Key Laboratory of Advanced Civil Engineering Materials of Education Ministry, Tongji University, 1239 Siping Road, Shanghai 200092 (China)

2011-01-15T23:59:59.000Z

186

ARM - Evaluation Product - Broadband Heating Rate Profile Project (BBHRP)  

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

ProductsBroadband Heating Rate Profile Project ProductsBroadband Heating Rate Profile Project (BBHRP) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Broadband Heating Rate Profile Project (BBHRP) 2000.03.01 - 2006.02.28 Site(s) SGP General Description The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties

187

Empirical Studies of Tropospheric Transmission in the Ultraviolet: Broadband Measurements  

Science Conference Proceedings (OSTI)

This work examines the effects of absorption and scattering in the troposphere on solar ultraviolet radiation reaching the ground. A site was established in the city of Chicago for monitoring broadband ultraviolet irradiance, total sunlight, and ...

John E. Frederick; Anne E. Koob; Amy D. Alberts; Elizabeth C. Weatherhead

1993-12-01T23:59:59.000Z

188

A Parameterization of Broadband Conversion Factors for METEOSAT Visible Radiances  

Science Conference Proceedings (OSTI)

The conversion of radiances measured by the METEOSAT visible channel into broadband radiances can be performed as long as the appropriate conversion factors are known. A simple model allowing a spectral description of the optical properties of ...

J. Stum; B. Pinty; D. Ramond

1985-12-01T23:59:59.000Z

189

Solar Radiation Absorption due to Water Vapor: Advanced Broadband Parameterizations  

Science Conference Proceedings (OSTI)

Accurate parameterizations for calculating solar radiation absorption in the atmospheric column due to water vapor lines and continuum are proposed for use in broadband shortwave radiative transfer codes. The error in the absorption values is ...

Tatiana A. Tarasova; Boris A. Fomin

2000-11-01T23:59:59.000Z

190

Calibrating Broadband UV Instruments: Ozone and Solar Zenith Angle Dependence  

Science Conference Proceedings (OSTI)

A UV spectroradiometer was installed at Mauna Loa Observatory (MLO), Hawaii, in July 1995. This instrument has been employed to characterize several broadband UV instruments of a type commonly used to estimate erythemal irradiance at many sites ...

Barry A. Bodhaine; Ellsworth G. Dutton; Richard L. McKenzie; Paul V. Johnston

1998-08-01T23:59:59.000Z

191

The Political Economies of Broadband Development in Korea and Japan  

E-Print Network (OSTI)

number of DSL subscriptions in Korea rose from 97,000 to 2.4Paper 2004: Broadband IT Korea (Seoul: NCA, 2004), p. 15. 7.Rate Per 100 Inhabitants Korea Japan USA OECD average

Kushida, Kenji; Oh, Seung-Youn

2007-01-01T23:59:59.000Z

192

Turbidity Determination from Broadband Irradiance Measurements: A Detailed Multicoefficient Approach  

Science Conference Proceedings (OSTI)

A physically modeled method is presented to obtain accurate turbidity determinations from broadband direct irradiance measurements. The method uses parameterizations of various extinction processes affecting the transfer of shortwave radiation in ...

Christian A. Gueymard

1998-04-01T23:59:59.000Z

193

Broadband Albedo Observations in the Southern Great Plains  

Science Conference Proceedings (OSTI)

Time series of daily broadband surface albedo for 1998 and 1999 have been analyzed from six locations in the network of 22 Atmospheric Radiation Measurement Program Solar–Infrared Radiation Stations distributed from central Kansas to central ...

Claude E. Duchon; Kenneth G. Hamm

2006-01-01T23:59:59.000Z

194

Measurement of Broadband Diffuse Solar Irradiance Using Current Commercial Instrumentation with a Correction for Thermal Offset Errors  

Science Conference Proceedings (OSTI)

Diffuse-sky solar irradiance is an important quantity for radiation budget research, particularly as it relates to climate. Diffuse irradiance is one component of the total downwelling solar irradiance and contains information on the amount of ...

Ellsworth G. Dutton; Joseph J. Michalsky; Thomas Stoffel; Bruce W. Forgan; John Hickey; Donald W. Nelson; Timothy L. Alberta; Ibrahim Reda

2001-03-01T23:59:59.000Z

195

National Broadband Plan Request for Information: Communications Requirements  

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

Before the Before the Department of Energy Washington, D.C. 20585 In the Matter of National Broadband Plan Request for Information: Communications Requirements To: The Office of General Counsel COMMENTS OF THE AMERICAN PUBLIC POWER ASSOCIATION The American Public Power Association ("APPA") appreciates this opportunity to respond to the Department of Energy ("the Department" or "DOE") regarding its Request for Information ("RFI") on Implementing the National Broadband Plan by Studying the

196

The Broadband Afterglow of GRB980703  

E-Print Network (OSTI)

We present radio observations of the afterglow of the bright gamma-ray burst GRB980703 made between one day and one year after the burst. These data are combined with published late-time radio measurements and existing optical, near-infrared (NIR) and X-ray observations to create a comprehensive broadband dataset for modeling the physical parameters of the outflow. While a wind-stratified medium cannot be ruled out statistically, it requires a high fraction of the shock energy in the electrons, and so is not favored on theoretical grounds. Instead, the data are consistent with a fireball model in which the ejecta are collimated and expanding into a constant density medium. The radio data cannot be fit with an isotropic shock but instead require a jet break at ~ 3.5 days, not seen at optical wavelengths due to the presence of a a bright host galaxy. The addition of the full radio dataset constrains the self-absorption frequency, giving an estimate of the circumburst density of n ~ 30 cm^-3, a value which diffe...

Frail, D A; Berger, E; Harrison, F A; Sari, R; Kulkarni, S R; Taylor, G B; Bloom, J S; Fox, D W; Moriarty-Schieven, G H; Price, P A

2003-01-01T23:59:59.000Z

197

Broadband Dielectric Spectroscopy on Human Blood  

E-Print Network (OSTI)

Dielectric spectra of human blood reveal a rich variety of dynamic processes. Achieving a better characterization and understanding of these processes not only is of academic interest but also of high relevance for medical applications as, e.g., the determination of absorption rates of electromagnetic radiation by the human body. The dielectric properties of human blood are studied using broadband dielectric spectroscopy, systematically investigating the dependence on temperature and hematocrit value. By covering a frequency range from 1 Hz to 40 GHz, information on all the typical dispersion regions of biological matter is obtained. We find no evidence for a low-frequency relaxation (alpha-relaxation) caused, e.g., by counterion diffusion effects as reported for some types of biological matter. The analysis of a strong Maxwell-Wagner relaxation arising from the polarization of the cell membranes in the 1-100 MHz region (beta-relaxation) allows for the test of model predictions and the determination of various intrinsic cell properties. In the microwave region beyond 1 GHz, the reorientational motion of water molecules in the blood plasma leads to another relaxation feature (gamma-relaxation). Between beta- and gamma-relaxation, significant dispersion is observed, which, however, can be explained by a superposition of these relaxation processes and is not due to an additional delta-relaxation often found in biological matter. Our measurements provide dielectric data on human blood of so far unsurpassed precision for a broad parameter range. All data are provided in electronic form to serve as basis for the calculation of the absorption rate of electromagnetic radiation and other medical purposes. Moreover, by investigating an exceptionally broad frequency range, valuable new information on the dynamic processes in blood is obtained.

M. Wolf; R. Gulich; P. Lunkenheimer; A. Loidl

2011-05-25T23:59:59.000Z

198

System and method for detection of dispersed broadband signals  

DOE Patents (OSTI)

A system and method for detecting the presence of dispersed broadband signals in real time are disclosed. The present invention utilizes a bank of matched filters for detecting the received dispersed broadband signals. Each matched filter uses a respective robust time template that has been designed to approximate the dispersed broadband signals of interest, and each time template varies across a spectrum of possible dispersed broadband signal time templates. The received dispersed broadband signal x(t) is received by each of the matched filters, and if one or more matches occurs, then the received data is determined to have signal data of interest. This signal data can then be analyzed and/or transmitted to Earth for analysis, as desired. The system and method of the present invention will prove extremely useful in many fields, including satellite communications, plasma physics, and interstellar research. The varying time templates used in the bank of matched filters are determined as follows. The robust time domain template is assumed to take the form w(t)=A(t)cos[l brace]2[phi](t)[r brace]. Since the instantaneous frequency f(t) is known to be equal to the derivative of the phase [phi](t), the trajectory of a joint time-frequency representation of x(t) is used as an approximation of [phi][prime](t). 10 figs.

Qian, S.; Dunham, M.E.

1999-06-08T23:59:59.000Z

199

Implementing the National Broadband Plan by Empowering Consumers and the  

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

Implementing the National Broadband Plan by Empowering Consumers Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy On May 11, 2010, the Department of Energy (DOE) published a Request for Information seeking comments and information from interested parties to assist DOE in understanding current and potential practices and policies for the states and other entities to empower consumers (and perhaps others) through access to detailed energy information in electronic form-including real-time information from smart meters, historical consumption data, and pricing and billing information. DOE will hold a public meeting as part of this request for information.

200

Re: National Broadband Plan (NBP) Request for Information: Data Access |  

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

National Broadband Plan (NBP) Request for Information: Data National Broadband Plan (NBP) Request for Information: Data Access Re: National Broadband Plan (NBP) Request for Information: Data Access Whirlpool Corporation is honored to have been chosen as a recipient of a U.S. Department of Energy's (DOE) Smart Grid Investment Grant program grant of $19.3 million over a two year period - which the company will match with its own investments. Whirlpool Corporation recently announced that in 2011 it would deliver one million U.S. manufactured smart dryers capable of reacting intelligently to signals from the smart grid by modifying their energy consumption to save consumers money on their home electric bills. In addition, the funds will complement the company's commitment that by 2015 all of the electronically controlled appliances it produces - everywhere in

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Re: DOE Request for Information - Implementing the National Broadband  

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

DOE Request for Information - Implementing the National DOE Request for Information - Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy Re: DOE Request for Information - Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy The Edison Electric Institute ("EEI"), on behalf of its member companies, hereby submits the following comments in response to the Request for Information ("RFI") by the Department of Energy ("Department" or "DOE") regarding the current and future communications requirements of utilities, including, but not limited to, the requirements of the Smart Grid in an effort to implement certain recommendations of the National Broadband Plan.

202

A Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field  

Open Energy Info (EERE)

Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field Details Activities (0) Areas (0) Regions (0) Abstract: As a contribution to the EEC study of the potential contribution of electric and electromagnetic techniques to geothermal exploration, magnetotelluric studies have been undertaken with a sounding bandwidth ranging from 2 to 7 decades of period at more than 30 sites within the chosen test area of Travale. This area must be one of the most unfavourable for the application of electrical techniques on account both of the thickness (up to 2 km) of conducting (< 1 ohm / m in some locations) cover

203

Status of the Broadband Heating Rate Profile (BBHRP) VAP  

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

Status of the Broadband Heating Rate Profile (BBHRP) VAP Status of the Broadband Heating Rate Profile (BBHRP) VAP Mlawer, Eli Atmospheric & Environmental Research, Inc. Clough, Shepard Atmospheric and Environmental Research Delamere, Jennifer Atmospheric and Environmental Research, Inc. Miller, Mark Brookhaven National Laboratory Johnson, Karen Brookhaven National Laboratory Troyan, David Brookhaven National Laboratory Jensen, Michael Brookhaven National Laboratory Shippert, Timothy Pacific Northwest National Laboratory Long, Chuck Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Sivaraman, Chitra Pacific Northwest National Laboratory Turner, David University of Wisconsin-Madison Heck, Patrick University of Wisconsin Rutan, David Analytical Services & Materials, Inc.

204

An arrayed nanoantenna for broadband light emission and detection  

E-Print Network (OSTI)

We suggest a broadband optical unidirectional arrayed nanoantenna consisting of equally spaced nanorods of gradually varying length. Each nanorod can be driven by near-field quantum emitters radiating at different frequencies or, according to the reciprocity principle, by an incident light at the same frequency. Broadband unidirectional emission and reception characteristics of the nano-antenna open up novel opportunities for subwavelength light manipulation and quantum communication, as well as for enhancing the performance of photoactive devices such as photovoltaic detectors, light-emitting diodes, and solar cells.

Miroshnichenko, Andrey E; Davoyan, Arthur R; Simovski, Constantin; Belov, Pavel; Kivshar, Yuri S

2011-01-01T23:59:59.000Z

205

Re: Implementing the National Broadband Plan by Studying the Communications  

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

Studying the Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Alcatel-Lucent ("ALU") appreciates the opportunity to contribute to the Department of Energy's ("Department") Request for Information ("RFI")1 to better understand the communications requirements of utilities, including the requirements of Smart Grid Technology. ALU sees smart grid as one of several solutions offered by the technological advances and widespread deployment of broadband networks. While in its comments ALU addresses the narrow issues raised specifically in the Department's RFI, these comments also convey broader policy

206

Gas Phase Photoacoustic Spectroscopy in the long-wave IR using Quartz Tuning Forks and Amplitude Modulated Quantum Cascade Lasers  

Science Conference Proceedings (OSTI)

A paper to accompany a 20 minute talk about the progress of a DARPA funded project called LPAS. ABSTRACT: We demonstrate the performance of a novel long-wave infrared photoacoustic laser absorbance spectrometer for gas-phase species using an amplitude modulated (AM) quantum cascade (QC) laser and a quartz tuning fork microphone. Photoacoustic signal was generated by focusing the output of a Fabry-Perot QC laser operating at 8.41 micron between the legs of a quartz tuning fork which served as a transducer for the transient acoustic pressure wave. The QC laser was modulated at the resonant frequency of the tuning fork (32.8 kHz). This sensor was calibrated using the infrared absorber Freon-134a by performing a simultanious absorption measurement using a 35 cm absorption cell. The NEAS of this instrument was determined to be 2 x 10^-8 W cm^-1 /Hz^1/2 and the fundamental sensitivity of this technique is limited by the noise floor of the tuning fork itself.

Wojcik, Michael D.; Phillips, Mark C.; Cannon, Bret D.

2006-12-31T23:59:59.000Z

207

A Broadband Acoustic Technique for Measuring Bubble Size Distributions: Laboratory and Shallow Water Measurements  

Science Conference Proceedings (OSTI)

The development of a broadband sound velocimeter that allows the simultaneous measurement of sound speed and attenuation over a wide range of frequencies is described. The velocimeter measures the attenuation and dispersion of a broadband ...

Eric J. Terrill; W. Kendall Melville

2000-02-01T23:59:59.000Z

208

A Simple Empirical Equation to Calculate Cloud Optical Thickness Using Shortwave Broadband Measurements  

Science Conference Proceedings (OSTI)

In this paper, an empirical equation is presented that can be used to estimate shortwave cloud optical thickness from measurements and analysis of shortwave broadband irradiances. When applied to a time series of broadband observations, this ...

James C. Barnard; Charles N. Long

2004-07-01T23:59:59.000Z

209

Mapping Surface Broadband Emissivity of the Sahara Desert Using ASTER and MODIS Data  

Science Conference Proceedings (OSTI)

Surface broadband emissivity in the thermal infrared region is an important parameter for the studies of the surface energy balance. This paper focuses on estimating a broadband window emissivity from the Advanced Spaceborne Thermal Emission and ...

Kenta Ogawa; Thomas Schmugge

2004-05-01T23:59:59.000Z

210

Broadband and Spectral Emissivities (2–18 ?m) of Some Natural Soils and Vegetation  

Science Conference Proceedings (OSTI)

Broadband and spectral emissivities of several soil types, grass and tree leaves are reported for wavelengths between 2 and 18 ?m. Broadband measurements were made in situ with an 8–14 ?m bandpass radiometer, and spectral measurements were made ...

Robert A. Sutherland

1986-03-01T23:59:59.000Z

211

Re: NBP RFI-Implementing the National Broadband Plan by Empowering...  

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

RFI-Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use and Privacy Re: NBP RFI-Implementing the National Broadband...

212

Three New Companies Join the Broadband Forum Board of Directors Proactive PR Online General Europe Three New Companies Join the Broadband Forum Board of Directors Proactive PR Online General North America Three New Companies Join the Broadband Forum Board  

E-Print Network (OSTI)

Three New Companies Join the Broadband Forum Board Statesman (Austin, TX) 03/19/13 of Directors Proactive PR Online General North America

Three New; Companies Join; Broadband Forum Board

2013-01-01T23:59:59.000Z

213

Critical factors for the expansion of broadband in developing countries: The case of Peru  

Science Conference Proceedings (OSTI)

Many studies have been made on the diffusion and development of broadband, however there are few published studies on the critical factors for advancing broadband services in developing countries. Thus, the purpose of this paper is to understand and ... Keywords: Actor analysis, Broadband, Critical factors, Developing countries, Peru

Peter Yamakawa; Gloria Cadillo; RubéN Tornero

2012-08-01T23:59:59.000Z

214

Identifying the determinants of broadband adoption by diffusion stage in OECD countries  

Science Conference Proceedings (OSTI)

Governments worldwide actively promote broadband development, owing to its positive impact on economic growth. Although many studies have identified the determinants of broadband adoption, this study re-examines the determinants by applying Arellano-Bond ... Keywords: Adopter categories, Broadband, Determinant, Innovation diffusion, OECD

Mao-Shong Lin, Feng-Shang Wu

2013-05-01T23:59:59.000Z

215

Socio-technical analysis of Korea's broadband convergence network: Big plans, big projects, big prospects?  

Science Conference Proceedings (OSTI)

The goal of this study is to investigate the policy objectives of the broadband convergence network (BcN) and the realization of objectives. The Korean government launched the BcN project with the objective of converting Korea into an information society ... Keywords: Broadband, Broadband convergence network, Socio-technical systems theory, South Korea

Dong-Hee Shin; Jaemin Jung

2012-08-01T23:59:59.000Z

216

Consumer sovereignty: New boundaries for telecommunications and broadband access  

Science Conference Proceedings (OSTI)

Antitrust and consumer protection laws share a common purpose to facilitate the exercise of effective consumer choice. This article uses this concept of consumer sovereignty to frame analysis of the shifting boundaries between the industry-specific and ... Keywords: Antitrust, Broadband, Consumer protection, Deregulation, Regulatory policy

Barbara A. Cherry

2010-02-01T23:59:59.000Z

217

ARM - Datastreams - prprad  

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

Datastreamsprprad Datastreamsprprad Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : PRPRAD Portable Radiation Package: Broadband Radiometers Active Dates 2012.11.02 - 2013.09.26 Measurement Categories Radiometric Originating Instrument Portable Radiation Package (PRP) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Battery voltage volt battery_voltage ( time ) Temperature of RAD circuit board degC circuit_board_temperature ( time ) Longwave broadband downwelling irradiance

218

Implementing the National Broadband Plan by Empowering Consumers and the  

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

Privacy Privacy Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy On May 11, 2010, the Department of Energy (DOE) published a Request for Information seeking comments and information from interested parties to assist DOE in understanding current and potential practices and policies for the states and other entities to empower consumers (and perhaps others) through access to detailed energy information in electronic form-including real-time information from smart meters, historical consumption data, and pricing and billing information. DOE will hold a public meeting as part of this request for information. Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy

219

ARM - Publications: Science Team Meeting Documents: Comparison of broadband  

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

Comparison of broadband solar irradiances measured on fixed and stabilized Comparison of broadband solar irradiances measured on fixed and stabilized platforms Ellingson, Robert Florida State University Takara, Ezra Florida State University Tooman, Tim Sandia National Laboratories Fixed and stabilized platform CM-22 radiometer observations obtained on long, constant altitude flight legs during the 2002 UAV flight series have been compared to estimate the possible improvements to shortwave absorption estimates that might be realized from stabilized measurements on stacked aircraft. This poster will chronicle the methods necessary to correct fixed platform measurements for aircraft pitch, roll and heading and will highlight the magnitude of the irradiance uncertainties resulting from the standard corrections. The fixed platform uncertainties at one level,

220

An Extended Comparison between LOWTRAN7 Computed and Observed Broadband Thermal Irradiances: Global Extreme and Intermediate Surface Conditions  

Science Conference Proceedings (OSTI)

Differences between observed and LOWTRAN7-computed downward longwave irradiances were examined at each of four globally diverse locations for an entire year at each site. The final results are restricted to times determined to be completely or ...

Ellsworth G. Dutton

1993-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

A study of longwave radiation codes for climate studies: Validation with ARM observations and tests in general circulation models. Technical report, 16 March 1991--15 March 1992  

SciTech Connect

Research by the US Department of Energy (DOE) has shown that cloud radiative feedback is the single most important effect determining the magnitude of possible climatic responses to human activity. However, these effects are still not known at the levels needed for climate prediction. Consequently, DOE has launched a major initiative-- the Atmospheric Radiation Measurements (ARM) Program -- directed at improving the parameterization of the physics governing cloud and radiative processes in general circulation models (GCM`s). One specific goal of ARM is to improve the treatment of radiative transfer in GCM`s under clear-sky, general overcast and broken cloud conditions. Our approach to developing the radiation model will be to test existing models in an iterative, predictive fashion. We will supply the Clouds and Radiative Testbed (CART) with a set of models to be compared with operationally observed data. The differences we find will lead to the development of new models to be tested with new data. Similarly, our GCM studies will use existing GCM`s to study the radiation sensitivity problem. We anticipate that the outcome of this approach will provide both a better longwave radiative forcing algorithm and a better understanding of how longwave radiative forcing influences the equilibrium climate of the atmosphere.

Ellingson, R.G.; Baer, F.

1992-06-01T23:59:59.000Z

222

DISCRETE-FREQUENCY AND BROADBAND NOISE RADIATION FROM DIESEL ENGINE COOLING FANS.  

E-Print Network (OSTI)

??This effort focuses on measuring and predicting the discrete-frequency and broadband noise radiated by diesel engine cooling fans. Unsteady forces developed by the interaction of… (more)

Kim, Geon-Seok

2007-01-01T23:59:59.000Z

223

The Broadband Status in the Region of Western Greece: Overview and Recommendations  

E-Print Network (OSTI)

This paper presents a study conducted in the Region of Western Greece, in order to propose an overall planning for the development of broadband infrastructure in the Region of Western Greece. The current broadband status in the region is being described, while the results of a survey on broadband usage and demand are being presented. The paper proposes some Recommendations that should be adopted in the region of Western Greece in order for the appropriate broadband infrastructures to be developed and adopted so as to contribute to economic growth and to tackle any possible cases of “digital gap ” between the citizens of our country.

Antonios Alexiou; Christos Bouras; Vaggelis Igglesis; Vaggelis Kapoulas; Michael Paraskevas; Thrasyvoulos Tsiatsos; John Papagiannopoulos

2005-01-01T23:59:59.000Z

224

Re: NBP RFI-Implementing the National Broadband Plan by Studying...  

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

Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: NBP RFI-Implementing the National Broadband Plan by Studying the...

225

Acoustic Environment of Admiralty Inlet: Broadband Noise Measurements  

SciTech Connect

Admiralty Inlet has been selected as a potential tidal energy site. It is located near shipping lanes, is a highly variable acoustic environment, and is frequented by the highly endangered southern resident killer whale (SRKW). Resolving environmental impacts is the first step to receiving approval to deploy tidal turbines at Admiralty Inlet. Of particular concern is the potential for blade strike or other negative interactions between the SRKW and the tidal turbine. A variety of technologies including passive and active monitoring systems are being considered as potential tools to determine the presence of SRKW in the vicinity of the turbines. Broadband noise level measurements are critical for the determination of design and operation specifications of all marine and hydrokinetic energy capture technologies. Acoustic environment data at the proposed site was acquired at different depths using a cabled vertical line array (VLA) with four calibrated hydrophones. The sound pressure level (SPL) power spectrum density was estimated based on the fast Fourier transform. This study describes the first broadband SPL measurements for this site at different depths with frequency ranging from 10 kHz to 480 kHz in combination with other information. To understand the SPL caused by this bedload transport, three different pressure sensors with temperature and conductivity were also assembled on the VLA to measure the conditions at the hydrophone deployment depth. The broadband SPL levels at frequency ranges of 3 kHz to 7 kHz as a function of depth were estimated. Only the hydrophone at an average depth of 40 m showed the strong dependence of SPL with distance from the bottom, which was possibly caused by the cobbles shifting on the seabed. Automatic Identification System data were also studied to understand the SPL measurements.

Xu, Jinshan; Deng, Zhiqun; Martinez, Jayson J.; Carlson, Thomas J.; Myers, Joshua R.; Weiland, Mark A.; Jones, Mark E.

2011-09-30T23:59:59.000Z

226

Implementing the National Broadband Plan by Studying the Communications  

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

Studying the Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy The Department of Energy (DOE) is seeking comments and information from interested parties to assist DOE in understanding the communications requirements of utilities, including, but not limited to, the requirements of the Smart Grid. This RFI also seeks to collect information about electricity infrastructure's current and projected communications requirements, as well as the types of networks and communications services that may be used for grid modernization. Specifically, DOE seeks information on what types of communications capabilities that the utilities

227

Social Network Theory, Broadband and the World Wide Web  

E-Print Network (OSTI)

of expertise, versus the decision to build a new road, gas pipeline, or railway line. The big cost in the first case might be the concern that once identified you might face a greater work-load, in terms of the second case there is a considerable cost even... examples of how social network theory can be applied to Internet usage, and how the move from slow connection speeds to faster broadband links alter these decisions. Here we directly apply a modified version of the model of Jackson and Wolinsky (1996...

Sgroi, Daniel

2006-03-14T23:59:59.000Z

228

ARM - Measurement - Shortwave narrowband diffuse downwelling...  

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

Incidence Multifilter Radiometer External Instruments USDARAD : US Department of Agriculture (USDA) Radiation Monitoring Data Field Campaign Instruments AOD : Aerosol Optical...

229

Social Workers and Broadband Advocacy: Social Justice and Information Communications Technologies  

Science Conference Proceedings (OSTI)

This article presents the results of an exploratory study examining attitudes toward broadband advocacy, as related to attitudes toward and use of information and communication technologies (ICTs) and a variety of other personal, political, and professional ... Keywords: advocacy, broadband, digital divide, politics, social work

Joseph Kuilema

2013-06-01T23:59:59.000Z

230

Take your partners: Public private interplay in Australian and New Zealand plans for next generation broadband  

Science Conference Proceedings (OSTI)

Within a few days of each other in early 2009, the national governments of Australia and New Zealand announced separate plans to invest heavily in advanced broadband networks. Taxpayers in each country will contribute at least half the estimated cost ... Keywords: Australia, Broadband, FTTH, FTTN, FTTP, Fibre, New Zealand, Next generation networks, Public private partnership

Jock Given

2010-10-01T23:59:59.000Z

231

Techno-economic analysis and empirical study of network broadband investment: The case of backbone upgrading  

Science Conference Proceedings (OSTI)

The paper introduces the basic problems of investment in new technologies in an operator telecommunication network. Investment in technologies for delivering broadband services at the metropolitan and backbone levels from technical and economic point ... Keywords: Network backbone upgrading, Network investment economics, Techno-economic modelling, Telecommunications & Broadband technology

Borka Jerman-Blaži?

2008-03-01T23:59:59.000Z

232

The broadband bearer connection control protocol: performance driven design and implementation  

Science Conference Proceedings (OSTI)

Broadband Access Networks (ANs) is a field of major activity in telecommunications technology. The V"B"5 interface was introduced to support interconnection between these ANs and Service Nodes (SNs) that may be operated by different providers. The first ... Keywords: Broadband access networks, Service nodes, Static resource allocation

P Giannakakis; N Lepidas; I Pikrammenos; I.S Venieris

1999-10-01T23:59:59.000Z

233

Using the economics of platforms to understand the broadband-based market formation in the New Zealand Ultra-Fast Broadband Network  

Science Conference Proceedings (OSTI)

The government of New Zealand is currently building a nation-wide fibre-optics network, a project known as the Ultra-Fast Broadband (UFB) initiative. The UFB network will cover 75 percent of New Zealanders over 10 years and will cost NZD $1.5 billion ... Keywords: Cross-network effects, Layer-1 services, New Zealand broadband national initiative, Open access platform, Price structure, Two-sided platforms, Wholesale layer-2 services

Fernando BeltráN

2012-10-01T23:59:59.000Z

234

DOE Takes Steps to Implement the National Broadband Plan | Department of  

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

Takes Steps to Implement the National Broadband Plan Takes Steps to Implement the National Broadband Plan DOE Takes Steps to Implement the National Broadband Plan May 11, 2010 - 12:54pm Addthis The Department of Energy has announced that it is taking steps to implement energy-related recommendations included in the National Broadband Plan, released by the Federal Communications Commission (FCC) in March. The plan included recommendations on a wide range of topics from expanding internet access to modernizing health information to integrating broadband technologies with the Smart Grid. DOE is taking the lead in assessing best practices for providing consumers access to energy data, along with studying the communications requirements of electric utilities to help inform federal Smart Grid policy. As part of the process of implementing these recommendations, the

235

Microsoft Word - Broadband Over Power Lines_FINAL.06.01.10.doc  

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

Broadband over Powerlines Can Accelerate the Transmission Smart Grid Broadband over Powerlines Can Accelerate the Transmission Smart Grid May 25, 2010 DOE/NETL-2010/1418 Broadband Over Power Lines Could Accelerate the Transmission Smart Grid Broadband Over Power Lines Could Accelerate the Transmission Smart Grid 1 Prepared by: Booz Allen Hamilton (BAH) Bruce Renz Renz Consulting, LLC DOE Contract number: DE-FE000400 Broadband Over Power Lines Could Accelerate the Transmission Smart Grid 2 Acknowledgements This report was prepared by Booz Allen Hamilton, Inc. (BAH) for the United States Department of Energy's National Energy Technology Laboratory. This work was completed under DOE NETL Contract Number DE-FE000400, and performed under BAH Task 430.04. The authors wish to acknowledge the excellent guidance, contributions, and cooperation of the

236

High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report | Open  

Open Energy Info (EERE)

High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report Jump to: navigation, search Tool Summary LAUNCH TOOL Name: High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report Focus Area: Crosscutting Topics: Policy Impacts Website: www.netl.doe.gov/smartgrid/referenceshelf/reports/HV-BPL_Final_Report. Equivalent URI: cleanenergysolutions.org/content/high-voltage-broadband-over-powerline Language: English Policies: "Deployment Programs,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Technical Assistance This reports details findings from a pilot High Voltage Broadband over Power Line (HV-BPL) program, an effort to develop a disruptive technology

237

X:\\ARM_19~1\\P193-223.WPD  

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

and downwelling broadband shortwave irradiances that we combine with National Weather Service surface and upper air data from the Albany airport as a test data set for ARM...

238

Terahertz Faraday rotation in a magnetic liquid: High magneto-optical figure of merit and broadband operation in a ferrofluid  

E-Print Network (OSTI)

for THz radiation from broadband12 and tuna- ble sources.13 These properties are of potential importance

Skorobogatiy, Maksim

239

The development of broadband satellite interactive access system based on DVB-S2 and mobile DVB-RCS standard  

Science Conference Proceedings (OSTI)

In this paper, the MoBISAT (Mobile Broadband Interactive Satellite Access Technology) system, the BcSAT (Broadband adaptive satellite communicationS and broadcAsting convergence Technology) system and the STC (Satellite and Terrestrial Convergence) system ... Keywords: BcSAT, DVB-S2, MoBISAT, STC, broadband mobile service, mobile DVB-RCS

Pansoo Kim; Dae-Ig Chang; Ho-Jin Lee

2007-01-01T23:59:59.000Z

240

IR Radiation from Trees to a Ski Run: A Case Study  

Science Conference Proceedings (OSTI)

Accurately calculating the surface radiation budget of a groomed ski run is crucial when determining snow surface temperature and other snow-related variables, knowledge of which is important for ski racing. Downwelling longwave radiation can ...

Rosie Howard; Roland Stull

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

A New Look at Calibration and Use of Eppley Precision Infrared Radiometers. Part II: Calibration and Use of the Woods Hole Oceanographic Institution Improved Meteorology Precision Infrared Radiometer*  

Science Conference Proceedings (OSTI)

For some years, investigators have made measurements of downwelling longwave irradiance with the Eppley Precision Infrared Radiometer (PIR), recording the values of thermopile voltage and body and dome thermistor resistances and combining them in ...

Richard E. Payne; Steven P. Anderson

1999-06-01T23:59:59.000Z

242

Re: Implementing the National Broadband Plan by Empowering Consumers and  

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

Empowering Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Re: Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Exelon Corporation (Exelon) hereby submits the following comments in response to the request by the Department of Energy ("DOE" or "Department") for information on state efforts to enact Smart Grid privacy and data collection policies; utility practices and policies regarding data access and collection; third party access to detailed energy information; the role of the consumer in balancing benefits of data access and privacy; and policies and practices that should guide policymakers in determining who can access consumer energy information and under what conditions.1 Exelon

243

Dictionary for Sparse Representation of Chirp Echo in Broadband Radar  

E-Print Network (OSTI)

A new dictionary for sparse representation of chirp echo in broadband radar is put forward in this paper. Different with chirplet decomposition which decomposes echo in time-frequency plane, the dictionary transforms the sparsity of target observed by radar in distance range to the sparsity in frequency domain by stretch processing and the sparse representation of echo is realized. Using strict deduction with mathematics, the sparsity of echo in dictionary is proved and the dictionary is orthogonal. In the application property, the construction of dictionary is simple, the parameters that are needed for dictionary can be obtained conveniently and the dictionary is convenient to use. Furthermore, the object of application can be expanded to the echo of multi-component chirps with single freedom degree.

Gao, Lei

2010-01-01T23:59:59.000Z

244

A broadband underwater acoustic modem implementation using coherent OFDM  

E-Print Network (OSTI)

Abstract — Multicarrier modulation in the form of orthogonal frequency division multiplexing (OFDM) has prevailed in recent broadband wireless systems over radio channels. In this senior design project, we have implemented an acoustic OFDM modem that transmits digital data through sound propagation. We have demonstrated OFDM transmission first in air, and then in water. We find that the underwater channel is much more complex than the air channel, and careful signal designs are needed for underwater transmissions. We have also handled another difficulty incurred by sampling rate mismatches at the transmitter and the receiver due to low-cost sampling devices. With two-way communication capabilities, this project provides a simple online chatting tool between two computers relying on acoustic links. Index Terms — OFDM, multicarrier transmission, underwater acoustic communication.

Sean Mason; Robert Anstett; Nicoletti Anicette; Shengli Zhou

2007-01-01T23:59:59.000Z

245

BROADBAND SPECTRAL INVESTIGATIONS OF SGR J1550-5418 BURSTS  

SciTech Connect

We present the results of our broadband spectral analysis of 42 SGR J1550-5418 bursts simultaneously detected with the Swift/X-ray Telescope (XRT) and the Fermi/Gamma-ray Burst Monitor (GBM), during the 2009 January active episode of the source. The unique spectral and temporal capabilities of the XRT windowed timing mode have allowed us to extend the GBM spectral coverage for these events down to the X-ray domain (0.5-10 keV). Our earlier analysis of the GBM data found that the SGR J1550-5418 burst spectra were described equally well with either a Comptonized model or with two blackbody functions; the two models were statistically indistinguishable. Our new broadband (0.5-200 keV) spectral fits show that, on average, the burst spectra are better described with two blackbody functions than with the Comptonized model. Thus, our joint XRT-GBM analysis clearly shows for the first time that the SGR J1550-5418 burst spectra might naturally be expected to exhibit a more truly thermalized character, such as a two-blackbody or even a multi-blackbody signal. Using the Swift and RXTE timing ephemeris for SGR J1550-5418 we construct the distribution of the XRT burst counts with spin phase and find that it is not correlated with the persistent X-ray emission pulse phase from SGR J1550-5418. These results indicate that the burst emitting sites on the neutron star need not to be co-located with hot spots emitting the bulk of the persistent X-ray emission. Finally, we show that there is a significant pulse phase dependence of the XRT burst counts, likely demonstrating that the surface magnetic field of SGR J1550-5418 is not uniform over the emission zones, since it is anticipated that regions with stronger surface magnetic field could trigger bursts more efficiently.

Lin Lin; Goegues, Ersin; Kaneko, Yuki [Faculty of Engineering and Natural Sciences, Sabanc Latin-Small-Letter-Dotless-I University, Orhanl Latin-Small-Letter-Dotless-I Tuzla, Istanbul 34956 (Turkey); Baring, Matthew G. [Department of Physics and Astronomy, Rice University, MS-108, P.O. Box 1892, Houston, TX 77251 (United States); Granot, Jonathan [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel); Kouveliotou, Chryssa [Space Science Office, VP62, NASA/Marshall Space Flight Center, Huntsville, AL 35812 (United States); Van der Horst, Alexander; Watts, Anna L. [Astronomical Institute 'Anton Pannekoek', University of Amsterdam, Postbus 94249, 1090 GE Amsterdam (Netherlands); Gruber, David; Von Kienlin, Andreas [Max-Planck-Institut fuer extraterrestrische Physik, Postfach 1312, D-85748 Garching bei Mnchen (Germany); Younes, George [USRA, National Space Science and Technology Center, 320 Sparkman Drive, Huntsville, AL 35805 (United States); Gehrels, Neil, E-mail: linlin@sabanciuniv.edu [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2012-09-01T23:59:59.000Z

246

Re: NBP RFI-Implementing the National Broadband Plan by Studying the  

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

Re: NBP RFI-Implementing the National Broadband Plan by Studying Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy The Telecommunications Industry Association (TIA) is pleased to provide comments on the communications requirements of electric utilities relevant to smart grid policy. TIA appreciates the proactive role the Department of Energy (DOE) is taking in executing the recommendations from the FCC in the National Broadband Plan. Electric utilities and the ICT industry share a long tradition of partnering to build and maintain the communications networks contributing to the security and reliability of the grid.

247

Re: NBP RFI-Implementing the National Broadband Plan by Studying the  

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

Re: NBP RFI-Implementing the National Broadband Plan by Studying Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy The Telecommunications Industry Association (TIA) is pleased to provide comments on the communications requirements of electric utilities relevant to smart grid policy. TIA appreciates the proactive role the Department of Energy (DOE) is taking in executing the recommendations from the FCC in the National Broadband Plan. Electric utilities and the ICT industry share a long tradition of partnering to build and maintain the communications networks contributing to the security and reliability of the grid.

248

Air-clad silicon pedestal structures for broadband mid-infrared microphotonics  

E-Print Network (OSTI)

Toward mid-infrared (mid-IR) silicon microphotonic circuits, we demonstrate broadband on-chip silicon structures, such as: (i) straight and bent waveguides and (ii) beam splitters, utilizing an air-clad pedestal configuration ...

Lin, Pao Tai

249

Novel broadband light sources and pulse generation techniques at 1.5 [mu]m  

E-Print Network (OSTI)

A wide diversity of applications, in both fundamental science and practical technology, has come to rely on broadband optical light sources as key enabling tools. In this thesis, we investigate three devices that contribute ...

Shen, Hanfei M, 1979-

2009-01-01T23:59:59.000Z

250

Engineering broadband and anisotropic photoluminescence emission from rare earth doped tellurite thin film photonic crystals  

E-Print Network (OSTI)

Broadband and anisotropic light emission from rare-earth doped tellurite thin films is demonstrated using Er[superscript 3+]-TeO[subscript 2] photonic crystals (PhCs). By adjusting the PhC parameters, photoluminescent light ...

Vanhoutte, Michiel

251

An Improved Method to Derive Surface Albedo from Narrowband AVHRR Satellite Data: Narrowband to Broadband Conversion  

Science Conference Proceedings (OSTI)

A method was investigated to estimate broadband surface shortwave albedo from the narrowband reflectances obtained by the Advanced Very High Resolution Radiometers (AVHRRs) on board the polar orbiting satellites. Field experiments were conducted ...

J. Song; W. Gao

1999-02-01T23:59:59.000Z

252

Broadband access over cable for next-generation services: a distributed switch architecture  

Science Conference Proceedings (OSTI)

The hybrid fiber coax architecture deployed by the cable service providers has been successful in capturing a substantial piece of the residential broadband access market. In the United States over five million homes connect to the Internet using DOCSIS ...

S. Dravida; D. Gupta; S. Nanda; K. Rege; J. Strombosky; M. Tandon

2002-08-01T23:59:59.000Z

253

Municipal broadband access networks in the Netherlands - three successful cases, and how New Europe may benefit  

Science Conference Proceedings (OSTI)

In the Netherlands there have been various successful municipal broadband access network projects in the last few years, and many more projects are taking shape at this moment. Some of them are targeting business, others aim to connect residents, and ... Keywords: BReATH, ICT, Kenniswijk, OnsNet Nuenen, Wireless Leiden, access networks, broadband, business model, case study, e-services, glass fiber, municipal networks, wireless

R. D. J. Kramer; A. Lopez; A. M. J. Koonen

2006-09-01T23:59:59.000Z

254

Open Advanced Metering Infrastructure (AMI) Systems: Leveraging Customer Broadband for Grid Integration  

Science Conference Proceedings (OSTI)

Retail broadband networks, such as cable, digital subscriber line (DSL), and high-speed wireless networks are available at nearly all customer premises in the United States and many other countries. With this increased availability, the percentage of the population subscribing to these networks for Internet service is rising. This report explores the possibility of using retail broadband networks for Smart Grid applications, particularly those related to residential customer integration. The report ...

2012-12-13T23:59:59.000Z

255

ARM - Instrument - sirs  

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

govInstrumentssirs govInstrumentssirs Documentation SIRS : Handbook SIRS : Instrument Mentor Monthly Summary (IMMS) reports SIRS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Solar and Infrared Radiation Station (SIRS) Instrument Categories Radiometric Picture of the Solar Infrared Radiation Station (SIRS) Picture of the Solar Infrared Radiation Station (SIRS) General Overview The Solar Infrared Radiation Station (SIRS) provides continuous measurements of broadband shortwave (solar) and longwave (atmospheric or infrared) irradiances for downwelling and upwelling components. These 1-minute data are collected from a network of stations to help determine

256

Section 78  

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

u%m u%m 2 2 &m 2 Session Papers 343 (1) A Narrow Band Longwave Radiation Model Based on Parameters Fitted to Line-by-Line Radiative Transfer Models J.X. Warner and R.G. Ellingson University of Maryland College Park, Maryland Introduction The results from the Intercomparison of Radiation Codes Used in Climate Models (ICRCCM) (Ellingson et al. 1991) showed about ±5% differences in flux calculations between the Narrow Band Models (NBMs) and Line-By-Line (LBL) models. Narrowband and broadband model calculations of downwelling radiance showed similar discrepancies with observations from the SPECTral Radiation Experiment (SPECTRE) and Atmospheric Radiation Measurement (ARM) program (Ellingson et al. 1995). The Malkmus (1967) statistical band model is often used in narrowband models to calculate atmospheric fluxes and heat-

257

1  

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

Analyses from TWP-ICE Analyses from TWP-ICE C.N. Long and J.H. Mather Pacific Northwest National Laboratory Richland, Washington N. Tapper and J. Beringer Monash University Melbourne, Australia B. Atkinson Australian Bureau of Meteorology Darwin, Australia Introduction Surface data collected during Tropical Warm Pool-International Cloud Experiment (TWP-ICE) includes radiation and standard meteorological measurements at six remote sites, as well as those at the ARM Climate Research Facility (ACRF) Darwin site (Figure 1). Five of these remote sites include not only unshaded broadband hemispheric shortwave (SW) and longwave (LW) instruments, but also a multi- detector SW radiometer designed to simultaneously measure both the downwelling diffuse and total SW

258

Broadband Model Performance for an Updated National Solar Radiation Database in the United States of America: Preprint  

DOE Green Energy (OSTI)

Updated review of broadband model performance in a project being done to update the existing United States National Solar Radiation Database (NSRDB).

Myers, D. R.; Wilcox, S.; Marion, W.; George, R.; Anderberg, M.

2005-09-01T23:59:59.000Z

259

A user centred approach to determining the impact of faster broadband on small and medium sized enterprises  

Science Conference Proceedings (OSTI)

This paper explores, through interviews with a small number of users, the potential impact of faster broadband speeds on UK based small and medium sized enterprises. The paper describes the actions taken to ameliorate the risk of drawing conclusions ... Keywords: SME, broadband, framework, human centred design, user experience

Doug Williams, Andy Gower, Joshan Meenowa, Jon Wakeling

2013-07-01T23:59:59.000Z

260

Broadband Cable Access Networks: The HFC Plant, 3rd Ed edition  

Science Conference Proceedings (OSTI)

This book focuses on broadband distribution and systems architecture and concentrates on practical concepts that will allow the reader to do their own design, improvement, and troubleshooting work. The objective is to enhance the skill sets of a large ... Keywords: Data Transmission Systems, Networking

David Large; James Farmer

2008-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Analysis of Broadband Solar Radiation and Albedo over the Ocean Surface at COVE  

Science Conference Proceedings (OSTI)

A coupled atmosphere–ocean radiative transfer model has been applied to analyze a full year of broadband solar irradiances (up and down) measured over an ocean site 25 km east of the coast of Virginia in the Atlantic. The coupled model treats ...

Zhonghai Jin; Thomas P. Charlock; Ken Rutledge

2002-10-01T23:59:59.000Z

262

Estimating fish orientation from broadband, limited-angle, multiview, acoustic reflections  

E-Print Network (OSTI)

Estimating fish orientation from broadband, limited-angle, multiview, acoustic reflections Jules S recorded from lateral views of juvenile fish can be used to infer animal orientation. Cali- brated acoustic data were recorded from live fish in a laboratory, while orientation was measured simultaneously via

Jaffe, Jules

263

Coded excitation of broadband terahertz using optical rectification in poled lithium niobate  

E-Print Network (OSTI)

Coded excitation of broadband terahertz using optical rectification in poled lithium niobate T optical rectification of femtosecond laser pulses in poled lithium niobate patterned with a 53-bit binary forms can be generated by optical rectification in poled lithium niobate PLN . A femtosecond laser pulse

Buma, Takashi

264

When the price is right: enabling time-dependent pricing of broadband data  

Science Conference Proceedings (OSTI)

In an era of 108% annual growth in demand for mobile data and $10/GB overage fees, Internet Service Providers (ISPs) are experiencing severe congestion and in turn are hurting consumers with aggressive pricing measures. But smarter practices, such as ... Keywords: broadband access pricing, dynamic pricing, economics, mobile application interface, time- and usage-based pricing

Soumya Sen, Carlee Joe-Wong, Sangtae Ha, Jasika Bawa, Mung Chiang

2013-04-01T23:59:59.000Z

265

The Future Generations of Mobile Communications Based on Broadband Access Methods  

Science Conference Proceedings (OSTI)

The forthcoming mobile communication systems are expected to provide much variety of services from high quality voice to high definition videos through high data rate wireless channels at anywhere in the world. High data rate requires broad ... Keywords: 4G, HAPS, ITS, broadband access, mobile communications

Shingo Ohmori; Yasushi Yamao; Nobuo Nakajima

2001-06-01T23:59:59.000Z

266

Accelerating agent-based ecosystem models using the cell broadband engine  

Science Conference Proceedings (OSTI)

This paper investigates how the parallel streaming capabilities of the Cell Broadband Engine can be used to speed up a class of agent-based plankton models generated from a domain-specific model compiler called the Virtual Ecology Workbench (VEW). We ...

Michael Lange; Tony Field

2010-06-01T23:59:59.000Z

267

Cloudy Sky Version of Bird's Broadband Hourly Clear Sky Model (Presentation)  

DOE Green Energy (OSTI)

Presentation on Bird's Broadband Hourly Clear Sky Model given by NREL's Daryl Myers at SOLAR 2006. The objective of this report is to produce ''all sky'' modeled hourly solar radiation. This is based on observed cloud cover data using a SIMPLE model.

Myers, D.

2006-08-01T23:59:59.000Z

268

Graded index and randomly oriented core-shell silicon nanowires with broadband and wide angle antireflection for photovoltaic cell applications  

E-Print Network (OSTI)

Antireflection with broadband and wide angle properties is important for a wide range of applications on photovoltaic cells and display. The SiOx shell layer provides a natural antireflection from air to the Si core absorption layer. In this work, we have demonstrated the random core-shell silicon nanowires with both broadband (from 400nm to 900nm) and wide angle (from normal incidence to 60\\degree) antireflection characteristics within AM1.5 solar spectrum. The graded index structure from the randomly oriented core-shell (Air/SiOx/Si) nanowires may provide a potential avenue to realize a broadband and wide angle antireflection layer.

Pignalosa, P; Qiao, L; Tseng, M; Yi, Yasha

2011-01-01T23:59:59.000Z

269

ARM - Datastreams - sirs  

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

(SIRS): broadband shortwave and longwave radiation Active Dates 1997.03.04 - 2013.07.30 Measurement Categories Radiometric Originating Instrument Solar and Infrared Radiation...

270

Evaluation of Improved Pyrgeometer Calibration Method  

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

A. Gotseff, T. L. Stoffel, and C. Webb National Renewable Energy Laboratory Golden, Colorado Abstract Broadband longwave (atmospheric) irradiance measurements are important for...

271

Optimization of Two-photon Excited Fluorescence Enhancement between Tunable and Broadband Femtosecond Laser Pulse Excitations  

E-Print Network (OSTI)

This project explores optimization of two-photon excited fluorescence (TPEF) enhancement between tunable narrowband and un-tuned broadband femtosecond (fs) laser pulse excitations for two-photon microscopy (TPM). The research is conducted preliminarily in time domain and comprehensively in frequency domain to understand the physics behind TPEF enhancement by un-tuned sub-10 fs nearly transform-limited pulse (TLP) versus tunable 140 fs pulse. The preliminary study on inverse proportionality of TPEF yield to fs-pulse duration delimits a general lower-bound to narrowband fs-pulse regime (pulse duration > 40 fs) with assumption of dye-molecule frequency invariant response. Deviations from this inverse proportionality in broadband fs-pulse regime (pulse duration < 40 fs) highlights dye-molecule frequency variant response, necessity of group delay dispersion (GDD) compensation, and broadband TLP for TPEF enhancement. The follow-up comparative study is made on un-tuned sub-10 fs TLP versus tunable 140 fs pulse excitations using three dye-phantoms (Indo-1, FITC, and TRITC) representative of fluorescent probes with similar TPEF characteristics. The integrated experimental system, with custom-designed GDD compensation, dispersion-less laser-beam expanding and focusing, and compound-lens for efficient fluorescence collection with good spectral resolution, ensures accurate TPEF measurements. Differentiated TPEF enhancements of Indo-1 (1.6), FITC (6.7), and TRITC (5.2) proportionally agree with calculated ones due to the overlap of fs-pulse second harmonic (SH) power spectrum with dye-molecule two-photon excitation (TPE) spectrum. Physically speaking, with broadband sub-10 fs TLP readily involved in both degenerate (v1 = v2) and non-degenerate (v1 ? v2) two-photon absorption (TPA), this un-tuned ultrashort fs-pulse excitation simultaneously allows for more accessibility to TPA-associated final states and diversely promotes population of thus excited dye-molecules with the three dye-phantoms. Under environmental influences (mutual quenching through one-photon absorption(s) and solvent effect), multicolor TPEF enhancement observed from a mixture of the three dyes shows promise of sub-10 fs TLP as simultaneous excitation for multiple-dye labeled samples in contrast to compromised excitation with narrowband fs-pulse tuning. Both single- and multicolor TPEF enhancements clarify tradeoff between tunability of narrowband fs-pulse and un-tuned broadband fs-pulse excitations, being instructive to further considerations on optimization of TPEF enhancement by strategic utilization of broadband fs-pulse for better performance of TPM.

Wang, Chao

2011-12-01T23:59:59.000Z

272

Extending broadband past the urban fringe with wireless mesh : a strategic analysis with policy implications for Kenya's Universal Service Fund  

E-Print Network (OSTI)

As the competitive wholesale cost of bandwidth continues to plummet in Kenya, last-mile networks have become a bottleneck in the extension of affordable broadband outside major cities. In this work we explore the business ...

Berkoben, Keith A. (Keith Alexander)

2011-01-01T23:59:59.000Z

273

A Comparison of Measured and Modeled Broadband Fluxes from Aircraft Data during the ICE '89 Field Experiment  

Science Conference Proceedings (OSTI)

During the 1989 intensive field campaign of the International Cirrus Experiment (ICE) over the North Sea, broadband radiative fluxes were measured in, above, and below cirrus cloud by a number of European meteorological research aircraft. One ...

R. W. Saunders; G. Brogniez; J. C. Buriez; R. Meerkötter; P. Wendling

1992-08-01T23:59:59.000Z

274

Assessing the technical and financial viability of broadband satellite systems using a cost per T1 minute metric  

E-Print Network (OSTI)

A cost per 1.544 Mbps (T1) link per minute metric is developed for systems evaluation of satellite based broadband communications systems. Global market models based on Internet growth and computer penetration are developed. ...

Kelic, Andjelka, 1972-

1998-01-01T23:59:59.000Z

275

Uncertainty Analysis for Broadband Solar Radiometric Instrumentation Calibrations and Measurements: An Update; Preprint  

DOE Green Energy (OSTI)

The measurement of broadband solar radiation has grown in importance since the advent of solar renewable energy technologies in the 1970's, and the concern about the Earth's radiation balance related to climate change in the 1990's. In parallel, standardized methods of uncertainty analysis and reporting have been developed. Historical and updated uncertainties are based on the current international standardized uncertainty analysis method. Despite the fact that new and sometimes overlooked sources of uncertainty have been identified over the period 1988 to 2004, uncertainty in broadband solar radiometric instrumentation remains at 3% to 5% for pyranometers, and 2% to 3% for pyrheliometers. Improvements in characterizing correction functions for radiometer data may reduce total uncertainty. We analyze the theoretical standardized uncertainty sensitivity coefficients for the instrumentation calibration measurement equation and highlight the single parameter (thermal offset voltages), which contributes the most to the observed calibration responsivities.

Myers, D. R.; Reda, I. M.; Wilcox, S. M.; Stoffel, T. L.

2004-04-01T23:59:59.000Z

276

A MODEL FOR PRODUCING STABLE, BROADBAND TERAHERTZ COHERENT SYNCHROTRONRADIATION IN STORAGE RINGS  

SciTech Connect

We present a model for producing stable broadband coherent synchrotron radiation (CSR) in the terahertz frequency region in an electron storage ring. The model includes distortion of bunch shape from the synchrotron radiation (SR), enhancing higher frequency coherent emission and limits to stable emission due to a microbunching instability excited by the SR. We use this model to optimize the performance of a source for CSR emission.

Sannibale, Fernando; Byrd, John M.; Loftsdottir, Agusta; Martin, MichaelC.; Venturini, Marco

2003-06-13T23:59:59.000Z

277

Broadband light absorption enhancement in polymer photovoltaics using metal nanowall gratings as transparent electrodes  

SciTech Connect

The authors investigate light absorption in organic solar cells in which indium tin oxide (ITO) is replaced by a new metallic architecture (grating) as a transparent electrode. Different from typical metal nanowire gratings, our gratings consist of metal nanowalls with nanoscale footprint and (sub)microscale height [Adv. Mater. 23, 2469 (2011)], thus ensuring high optical transmittance and electrical conductivity. Simulations reveal that a broadband and polarization-insensitive light absorption enhancement is achieved via two mechanisms, when such silver nanowall gratings are employed in P3HT:PCBM based solar cells. Overall absorption enhanced by ~23% compared to a reference cell with ITO electrode.

Ye, Zhuo; Chaudhary, Sumit; Kuang, Ping; Ho, Kai-Ming

2012-05-15T23:59:59.000Z

278

BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS  

SciTech Connect

If double neutron star mergers leave behind a massive magnetar rather than a black hole, then a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB)-GWB association or if there is an association but the SGRB does not beam toward Earth. Besides directly dissipating the proto-magnetar wind, as suggested by Zhang, here we suggest that the magnetar wind could push the ejecta launched during the merger process and, under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broadband afterglow due to synchrotron radiation. We study this physical scenario in detail and present the predicted X-ray, optical, and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical light curves usually peak around the magnetar spin-down timescale ({approx}10{sup 3}-10{sup 5} s), reaching brightnesses readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broadband afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equations of state for nuclear matter.

Gao He; Ding Xuan; Wu Xuefeng [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China); Zhang Bing [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States); Dai Zigao, E-mail: xfwu@pmo.ac.cn, E-mail: zhang@physics.unlv.edu, E-mail: dzg@nju.edu.cn [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)

2013-07-10T23:59:59.000Z

279

Understanding South Korea and Japan’s Spectacular Broadband Development: Strategic Liberalization of the Telecommunications Sectors  

E-Print Network (OSTI)

drafts of this ongoing research project. The ICT sectors of both South Korea and Japan developed rapidly, especially in developing high-speed, low priced broadband services. These networks can potentially provide both economies with new playgrounds for experimentation and innovation. Existing explanations of how these broadband networks and services were created tend to be confused and contradictory regarding 1) the roles played by the states, 2) the exact mechanisms of interaction between governments policies and programs, regulatory frameworks, and market dynamics, and 3) the politics driving each of the state-market interactions. We find that differences in the institutional configurations of the two countries since the inception of their ICT sectors created a distinct set of political dynamics in each country. The initial telecom policy regimes of the two countries in their initial stages of liberalization were strikingly similar. However, the contrasting political dynamics drove Japan and Korea’s policy regimes along different trajectories. Driven by politicized conflicts and a series of negotiated compromises between the former incumbent and lead bureaucracy, Japan’s ICT sector

Kenji Kushida; Seung-youn Oh; Phd Students

2006-01-01T23:59:59.000Z

280

Bright broad-band afterglows of gravitational wave bursts from mergers of binary neutron stars  

E-Print Network (OSTI)

If double neutron star mergers leave behind a massive magnetar rather than a black hole, a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB) - GWB association or there is an association but the SGRB does not beam towards earth. Besides directly dissipating the proto-magnetar wind as suggested by Zhang, we here suggest that the magnetar wind could push the ejecta launched during the merger process, and under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broad-band afterglow due to synchrotron radiation. We study this physical scenario in detail, and present the predicted X-ray, optical and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical lightcurves usually peak around the magnetar spindown time scale (10^3-10^5s), reaching brightness readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broad-band afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equation-of-state for nuclear matter.

He Gao; Xuan Ding; Xue-Feng Wu; Bing Zhang; Zi-Gao Dai

2013-01-03T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Broadband surface plasmon jets: direct observation of plasmon propagation for application to sensors and optical communications in microscale and nanoscale circuitry  

DOE Patents (OSTI)

A system and method for generating and using broadband surface plasmons in a metal film for characterization of analyte on or near the metal film. The surface plasmons interact with the analyte and generate leakage radiation which has spectral features which can be used to inspect, identify and characterize the analyte. The broadband plasmon excitation enables high-bandwidth photonic applications.

Bouhelier, Alexandre (Westmont, IL); Wiederrecht, Gary P. (Elmhurst, IL)

2008-02-19T23:59:59.000Z

282

The ARM Southern Great Plains Central Facility Best Estimate Radiative Flux CD  

Science Conference Proceedings (OSTI)

The BEFlux VAP directly compares data from the three Normal Incidence Perheliometers, shaded pyranometers, and shaded pyrgeometers at the SGP CF. Extensive analysis with several years of data has produced limits of typical ranges of agreement when these instruments are performing as expected. These limits are used to screen the data, and then the average is taken of the two that agree best, given that at least two instruments agree to within the established limits. This is done for the downwelling direct normal and diffuse shortwave, and the downwelling longwave. The total (global) downwelling shortwave is then the sum of the direct and diffuse components.

Long, CN

2002-04-01T23:59:59.000Z

283

Efficient Broadband RF Energy Harvesting for Wireless Sensors Joseph A. Hagerty, Tian Zhao, Regan Zane and Zoya Popovic  

E-Print Network (OSTI)

energy coupling DC-DC converter that uses either inductive or capacitive elements for internal energy Electronics Cin Cload Cst Exfr Eop Energy Coupling DC-DC Converter Figure 2. Functional schematicEfficient Broadband RF Energy Harvesting for Wireless Sensors Joseph A. Hagerty, Tian Zhao, Regan

284

A heterogeneous parallel system running open mpi on a broadband network of embedded set-top devices  

Science Conference Proceedings (OSTI)

We present a heterogeneous parallel computing system that combines a traditional computer cluster with a broadband network of embedded set-top box (STB) devices. As multiple service operators (MSO) manage millions of these devices across wide geographic ... Keywords: distributed embedded systems, mpi, multiple sequence alignment, multiple service operators, set-top box

Richard Neill; Alexander Shabarshin; Luca P. Carloni

2010-05-01T23:59:59.000Z

285

A new carrier grade aggregation network model for delivering broadband services to fast moving users: Research Articles  

Science Conference Proceedings (OSTI)

In this article, we present the research challenges that are associated with designing a cost-effective network architecture for delivering broadband services to fast moving users (e.g. in trains). We specifically extended the standard Switched Ethernet ... Keywords: mobility management, network recovery, spanning trees

F. De Greve; F. Van Quickenborne; F. De Turck; I. Moerman; P. Demeester

2007-03-01T23:59:59.000Z

286

Recent Developments on the Broadband Heating Rate Profile Value-Added Product  

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

Recent Developments on the Recent Developments on the Broadband Heating Rate Profile Value-Added Product E. J. Mlawer, J. S. Delamere, and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts M. A. Miller and K. L. Johnson Brookhaven National Laboratory Upton, New York T. R. Shippert and C. N. Long Pacific Northwest National Laboratory Richland, Washington R. G. Ellingson Florida State University Tallahassee, Florida M. H. Zhang State University of New York - Stony Brook Albany, New York R. A. Ferrare National Aeronautics and Space Administration Langley Research Center Hampton, Virginia R. T. Cederwall and S. C. Xie Los Alamos National Laboratory Los Alamos, New Mexico J. A. Ogren National Oceanic and Atmospheric Administration

287

A Simple Empirical Equation to Calculate Cloud Optical Thickness from Shortwave Broadband Measurements  

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

Simple Empirical Equation to Calculate Cloud Optical Simple Empirical Equation to Calculate Cloud Optical Thickness from Shortwave Broadband Measurements J. C. Barnard and C. N. Long Pacific Northwest National Laboratory Richland, Washington Introduction Observational studies of shortwave cloud optical thickness, c , play an important role in determining how clouds affect climate. Accordingly, considerable effort has been, and continues to be expended to characterize the spatial and temporal distribution of c over the globe. This effort involves satellite and ground-based measurements that infer c from measurements of the reflection or transmission of solar radiation. Transmitted solar radiation forms the basis of several important algorithms designed to calculate c ; these algorithms use either spectral irradiances (Min and Harrison 1996; henceforth referred

288

AARP Reply Comments to: DEPARTMENT OF ENERGY Implementing the National Broadband  

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

AARP Reply Comments to: AARP Reply Comments to: DEPARTMENT OF ENERGY Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy David Certner Legislative Counsel and Legislative Policy Director AARP Government Relations and Advocacy August 6, 2010 2 AARP submits the following comments on consumers and smart grid issues in reply to initial comments of a number of entities to the Request for Information (Request or RFI) on access to data in the smart grid space, published by the Department of Energy (DOE) on May 11, 2010. About AARP Founded in 1958, AARP is a nonprofit, nonpartisan membership organization that helps people age 50 and over improve the quality of their lives. AARP has offices in all 50 states, the District

289

BROADBAND ANTENNA MATCHING NETWORK DESIGN AND APPLICATION FOR RF PLASMA ION SOURCE  

SciTech Connect

The RF ion source at Spallation Neutron Source has been upgraded to meet higher beam power requirement. One important subsystem for efficient operation of the ion source is the 2MHz RF impedance matching network. The real part of the antenna impedance is very small and is affected by plasma density for 2MHz operating frequency. Previous impedance matching network for the antenna has limited tuning capability to cover this potential variation of the antenna impedance since it employed a single tuning element and an impedance transformer. A new matching network with two tunable capacitors has been built and tested. This network can allow precision matching and increase the tunable range without using a transformer. A 5-element broadband matching network also has been designed, built and tested. The 5-element network allows wide band matching up to 50 kHz bandwidth from the resonance center of 2 MHz. The design procedure, simulation and test results are presented.

Shin, Ki [ORNL; Kang, Yoon W [ORNL; Piller, Chip [ORNL; Fathy, Aly [University of Tennessee, Knoxville (UTK)

2011-01-01T23:59:59.000Z

290

An efficient approach to unstructured mesh hydrodynamics on the cell broadband engine  

SciTech Connect

Unstructured mesh physics for the Cell Broadband Engine (CBE) has received little or no attention to date, largely because the CBE architecture poses particular challenges for unstructured mesh algorithms. The most common SPU memory management strategies cannot be applied to the irregular memory access patterns of unstructured meshes, and the SPU vector instruction set does not support the indirect addressing needed by connectivity arrays. This paper presents an approach to unstructured mesh physics that addresses these challenges, by creating a new mesh data structure and reorganizing code to give efficient CBE performance. The approach is demonstrated on the FLAG production hydrodynamics code using standard test problems, and results show an average speedup of more than 5x over the original code.

Ferenbaugh, Charles R [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

291

An efficient approach to unstructured mesh hydrodynamics on the cell broadband engine (u)  

SciTech Connect

Unstructured mesh physics for the Cell Broadband Engine (CBE) has received little or no attention to date, largely because the CBE architecture poses particular challenges for unstructured mesh algorithms. SPU memory management strategies such as data preloading cannot be applied to the irregular memory storage patterns of unstructured meshes; and the SPU vector instruction set does not support the indirect addressing needed by connectivity arrays. This paper presents an approach to unstructured mesh physics that addresses these challenges, by creating a new mesh data structure and reorganizing code to give efficient CBE performance. The approach is demonstrated on the FLAG production hydrodynamics code using standard test problems, and results show an average speedup of more than 5x over the original code.

Ferenbaugh, Charles R [Los Alamos National Laboratory

2010-12-14T23:59:59.000Z

292

Intracavity trace molecular detection with a broadband mid-IR frequency comb source  

E-Print Network (OSTI)

Ultrasensitive detection of methane, isotopic carbon dioxide, carbon monoxide, formaldehyde, acetylene and ethylene is performed in the spectral range 2.5 - 5 \\mu m using intracavity spectroscopy in broadband optical parametric oscillators (OPOs). The OPOs were operated near degeneracy and synchronously pumped either by a mode-locked erbium (1560 nm) or thulium (2050 nm) fiber laser. A large instantaneous bandwidth of up to 800 cm$^{-1}$ allows for simultaneous detection of several gases. We observe an effective path length enhancement due to coherent interaction inside the OPO cavity and achieve part-per-billion sensitivity levels. The measured spectral shapes are in good agreement with a model that takes into account group delay dispersion across the broad OPO frequency band.

Haakestad, Magnus W; Leindecker, Nick; Marandi, Alireza; Vodopyanov, Konstantin L

2013-01-01T23:59:59.000Z

293

Broadband spectroscopic sensor for real-time monitoring of industrial SO{sub 2} emissions  

SciTech Connect

A spectroscopic system for continuous real-time monitoring of SO{sub 2}, concentrations in industrial emissions was developed. The sensor is well suited for field applications due to simple and compact instrumental design, and robust data evaluation based on ultraviolet broadband absorption without the use of any calibration cell. The sensor has a detection limit of 1 ppm, and was employed both for gas-flow simulations with and without suspended particles, and for in situ measurement of SO{sub 2} concentrations in the flue gas emitted from an industrial coal-fired boiler. The price/performance ratio of the instrument is expected to be superior to other comparable real-time monitoring systems.

Xu, F.; Zhang, Y.G.; Somesfalean, G.; Wang, H.S.; Wu, S.H.; Zhang, Z.G. [Harbin Institute of Technology, Harbin (China). Dept, of Physics

2007-05-15T23:59:59.000Z

294

Time-resolved broadband cavity-enhanced absorption spectroscopy for chemical kinetics.  

SciTech Connect

Experimental measurements of elementary reaction rate coefficients and product branching ratios are essential to our understanding of many fundamentally important processes in Combustion Chemistry. However, such measurements are often impossible because of a lack of adequate detection techniques. Some of the largest gaps in our knowledge concern some of the most important radical species, because their short lifetimes and low steady-state concentrations make them particularly difficult to detect. To address this challenge, we propose a novel general detection method for gas-phase chemical kinetics: time-resolved broadband cavity-enhanced absorption spectroscopy (TR-BB-CEAS). This all-optical, non-intrusive, multiplexed method enables sensitive direct probing of transient reaction intermediates in a simple, inexpensive, and robust experimental package.

Sheps, Leonid; Chandler, David W.

2013-04-01T23:59:59.000Z

295

Radiative Flux Estimation from a Broadband Radiometer Using Synthetic Angular Models in the EarthCARE Mission Framework. Part II: Evaluation  

Science Conference Proceedings (OSTI)

The instantaneous top-of-atmosphere (TOA) radiance-to-flux conversion for the broadband radiometer (BBR) on board the Earth Clouds, Aerosols, and Radiation Explorer (EarthCARE) was assessed in Part I of this paper, by developing theoretical ...

Carlos Domenech; Ernesto Lopez-Baeza; David P. Donovan; Tobias Wehr

2012-09-01T23:59:59.000Z

296

Integrated optical systems for excitation delivery and broadband detection in micro-fluidic electrochromatography  

SciTech Connect

The authors have designed and assembled two generations of integrated micro-optical systems that deliver pump light and detect broadband laser-induced fluorescence in micro-fluidic chemical separation systems employing electrochromatography. The goal is to maintain the sensitivity attainable with larger, tabletop machines while decreasing package size and increasing throughput (by decreasing the required chemical volume). One type of micro-optical system uses vertical-cavity surface-emitting lasers (VCSELs) as the excitation source. Light from the VCSELs is relayed with four-level surface relief diffractive optical elements (DOEs) and delivered to the chemical volume through substrate-mode propagation. Indirect fluorescence from dye-quenched chemical species is collected and collimated with a high numerical aperture DOE. A filter blocks the excitation wavelength, and the resulting signal is detected as the chemical separation proceeds. Variations of this original design include changing the combination of reflective and transmissive DOEs and optimizing the high numerical aperture DOE with a rotationally symmetric iterative discrete on-axis algorithm. The authors will discuss the results of these implemented optimizations.

KEMME,SHANALYN A.; WARREN,MIAL E.; SWEATT,WILLIAM C.; WENDT,JOEL R.; BAILEY,CHRISTOPHER G.; MATZKE,CAROLYN M.; ALLERMAN,ANDREW A.; ARNOLD,DON W.; CARTER,TONY RAY; ASBILL,RANDOLPH E.; SAMORA,SALLY

2000-03-15T23:59:59.000Z

297

An Application of the Coda Methodology for Moment-Rate Spectra Using Broadband Stations in Turkey  

Science Conference Proceedings (OSTI)

A recently developed coda magnitude methodology was applied to selected broadband stations in Turkey for the purpose of testing the coda method in a large, laterally complex region. As found in other, albeit smaller regions, coda envelope amplitude measurements are significantly less variable than distance-corrected direct wave measurements (i.e., L{sub g} and surface waves) by roughly a factor 3-to-4. Despite strong lateral crustal heterogeneity in Turkey, they found that the region could be adequately modeled assuming a simple 1-D, radially symmetric path correction. After calibrating the stations ISP, ISKB and MALT for local and regional distances, single-station moment-magnitude estimates (M{sub W}) derived from the coda spectra were in excellent agreement with those determined from multistation waveform modeling inversions, exhibiting a data standard deviation of 0.17. Though the calibration was validated using large events, the results of the calibration will extend M{sub W} estimates to significantly smaller events which could not otherwise be waveform modeled. The successful application of the method is remarkable considering the significant lateral complexity in Turkey and the simple assumptions used in the coda method.

Eken Tuna, Kevin Mayeda, Abraham Hofstetter, Rengin Gok, Gonca Orgulu, Niyazi Turkelli

2004-07-11T23:59:59.000Z

298

EXAMINING THE BROADBAND EMISSION SPECTRUM OF WASP-19b: A NEW z-BAND ECLIPSE DETECTION  

SciTech Connect

WASP-19b is one of the most irradiated hot-Jupiters known. Its secondary eclipse is the deepest of all transiting planets and has been measured in multiple optical and infrared bands. We obtained a z-band eclipse observation with a measured depth of 0.080% {+-} 0.029%, using the 2 m Faulkes Telescope South, which is consistent with the results of previous observations. We combined our measurement of the z-band eclipse with previous observations to explore atmosphere models of WASP-19b that are consistent with its broadband spectrum. We use the VSTAR radiative transfer code to examine the effect of varying pressure-temperature profiles and C/O abundance ratios on the emission spectrum of the planet. We find that models with super-solar carbon enrichment best match the observations, which is consistent with previous model retrieval studies. We also include upper atmosphere haze as another dimension in the interpretation of exoplanet emission spectra and find that particles <0.5 {mu}m in size are unlikely to be present in WASP-19b.

Zhou, George; Bayliss, Daniel D. R. [Research School of Astronomy and Astrophysics, Australian National University, Cotter Rd, Weston Creek, ACT 2611 (Australia); Kedziora-Chudczer, Lucyna; Bailey, Jeremy, E-mail: george@mso.anu.edu.au [School of Physics, University of New South Wales, Sydney, NSW 2052 (Australia)

2013-09-10T23:59:59.000Z

299

Preliminary Investigations of Outdoor Meteorological Broadband and Spectral Conditions for Evaluating Photovoltaic Modules and Systems  

DOE Green Energy (OSTI)

Historically, flat-plate photovoltaic (PV) modules have been rated at "peak-output" for power generated under Standard; Reporting Conditions (SRC) of 1000 Watts per square meter W/m2 global irradiance at a standard temperature (25degC) and reference spectral distribution. We examine the direct-normal irradiance, spectral distribution, ambient temperature, and wind speed to be used for evaluating flatplate and concentrator module performance. Our study is based upon the 30-year U.S. National Solar Radiation Data Base for conditions observed when the global irradiance on a 2-axis-tracked surface is 1000 W/m2. Results show commonly-used values for concentrator testing of 850 W/m2 for direct-normal irradiance and 20degC for ambient temperature are appropriate. Wind speed should be increased from 1 m/s to a more frequently observed 4 m/s. Differences between the reference direct-normal spectrum and spectra measured at three sites when broadband direct-normal irradiance and global-normal irradiance are near SRC irradiances suggest revisions to the reference spectra may be needed.

Myers, D. R.; Kurtz, S. R.; Whitaker, C.; Townsend, T.

2000-01-01T23:59:59.000Z

300

BROADBAND SPECTRAL ANALYSIS OF THE GALACTIC RIDGE X-RAY EMISSION  

SciTech Connect

Detailed spectral analysis of the Galactic X-ray background emission, or the Galactic Ridge X-ray Emission (GRXE), is presented. To study the origin of the emission, broadband and high-quality GRXE spectra were produced from 18 pointing observations with Suzaku in the Galactic bulge region, with a total exposure of 1 Ms. The spectra were successfully fitted by a sum of two major spectral components: a spectral model of magnetic accreting white dwarfs with a mass of 0.66{sup +0.09}{sub -0.07} M{sub Sun} and a softer optically thin thermal emission with a plasma temperature of 1.2-1.5 keV that is attributable to coronal X-ray sources. When combined with previous studies that employed high spatial resolution of the Chandra satellite, the present spectroscopic result gives stronger support to the scenario that the GRXE is essentially an assembly of numerous discrete faint X-ray stars. The detected GRXE flux in the hard X-ray band was used to estimate the number density of the unresolved hard X-ray sources. When integrated over a luminosity range of {approx}10{sup 30}-10{sup 34} erg s{sup -1}, the result is consistent with a value that was reported previously by directly resolving faint point sources.

Yuasa, Takayuki; Makishima, Kazuo; Nakazawa, Kazuhiro, E-mail: yuasa@astro.isas.jaxa.jp [Department of Physics, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)

2012-07-10T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Tobin-DC  

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

Calculated Downwelling Longwave Calculated Downwelling Longwave Spectral Radiances at the SHEBA Ice Station: Prelude to an Arctic AERI/LBLRTM QME D. C. Tobin, R. O. Knuteson, and H. E. Revercomb Cooperative Institute for Meteorological Satellite Studies Space, Science, and Engineering Center University of Wisconsin Madison, Wisconsin Introduction We present comparisons of clear-sky observed and calculated downwelling radiances from the year-long Surface Heat Budget of the Arctic Ocean (SHEBA) experiment. These and expected similar compari- sons from the Atmospheric Radiation Measurement (ARM) North Slope of Alaska (NSA) site in Barrow, Alaska, are useful for assessing the accuracy of clear-sky forward model issues, particularly the far-infrared air-broadened water vapor continuum and the temperature dependence of the 8 µm to 12 µm

302

Long-Wave Trapping by Oceanic Ridges  

Science Conference Proceedings (OSTI)

Long waves are affected by bottom topography and under certain conditions may be trapped along topographical contours which then act as wave guides transmitting wave energy for great distances with little loss. This study examines waves trapped ...

Richard Paul Shaw; Wayne Neu

1981-10-01T23:59:59.000Z

303

ARM - Measurement - Longwave spectral brightness temperature  

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

A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation at the same spectrally resolved wavelengths....

304

Broadband Acoustic Environment at a Tidal Energy Site in Puget Sound  

SciTech Connect

Admiralty Inlet has been selected as a potential tidal energy site. It is located near shipping lanes, is a highly variable acoustic environment, and is frequented by the endangered southern resident killer whale (SRKW). Resolving environmental impacts is the first step to receiving approval to deploy tidal turbines. Several monitoring technologies are being considered to determine the presence of SRKW near the turbines. Broadband noise level measurements are critical for determining design and operational specifications of these technologies. Acoustic environment data at the proposed site was acquired at different depths using a cabled vertical line array from three different cruises during high tidal period in February, May, and June 2011. The ambient noise level decreases approximately 25 dB re 1 ?Pa per octave from frequency ranges of 1 kHz to 70 kHz, and increases approximately 20 dB re 1 ?Pa per octave for the frequency from 70 kHz to 200 kHz. The difference of noise pressure levels in different months varies from 10 to 30 dB re 1 ?Pa for the frequency range below 70 kHz. Commercial shipping and ferry vessel traffic were found to be the most significant contributors to sound pressure levels for the frequency range from 100 Hz to 70 kHz, and the variation could be as high as 30 dB re 1 ?Pa. These noise level measurements provide the basic information for designing and evaluating both active and passive monitoring systems proposed for deploying and operating for tidal power generation alert system.

Xu, Jinshan; Deng, Zhiqun; Martinez, Jayson J.; Carlson, Thomas J.; Myers, Joshua R.; Weiland, Mark A.

2012-04-04T23:59:59.000Z

305

Development of earthquake early warning system using real time signal of broadband seismogram  

SciTech Connect

Earthquake pose serious threat of live and properties for urban area near subduction zone offshore and active fault on land. Jakarta and Bandung is an example of big city that no system of Earthquake early warning (EEW) event very high urbanization, and has many important infra structure in the area. The capital city is potentially high risk ground shaking. EEW can be usefull tool for reducing earthquake hazard, if spatial relation between cities and earthquake source is favorable for such warning and their citizens are properly trained to response early warning message. An EEW and rapid response system can provide the critical information needed to minimized lost of live and property and direct rescue. Earthquake ground shaking with magnitude M>6.0 from zone of Megathrust, southern of West Java should potentially damage in the area of west java especially Bandung and Jakarta City. This research development of EEW parameter such as amplitude displacement (Pd), rapid magnitude determination (M) and Peak ground Velocity (PGV). We explore the practical approach to EEW with the use of Broadband seismogram signal. Time effective EEW which epicenter from megathrust zone has potential to provide EEW in the area of west java such as Jakarta first ground shaking more or less 60 second later and strong shaking 118 second after EEW Alarm on CISI Station. EEW notification at potentially damage in the area of west java can be predicted from the characteristic of Pd > 0.5 cm, M> 6 and PGV > 10 cm/sec. GIS as a tool for presentation of hazard mapping in the affected area.

Gunawan, Hendar; Puspito, Nanang T.; Ibrahim, Gunawan; Harjadi, Prih [Badan Meteorologi Klimatologi dan Geofisika, Jl. Angkasa I No 2 Jakarta 10720 Indonesia Institut Technologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia)

2012-06-20T23:59:59.000Z

306

1  

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

the Estimation of Clear-Sky Upwelling the Estimation of Clear-Sky Upwelling Shortwave and Longwave C.N. Long Pacific Northwest National Laboratory Richland, Washington Introduction Previous work (Long and Ackerman 2000; Long 2004) has concentrated on estimating the downwelling clear-sky irradiances and calculating the effect of clouds on the downwelling radiative energy budget. However, cloud forcing is defined for the difference between clear- and cloudy-sky net radiation, which includes the upwelling components. Thus, if we are to estimate the surface radiative cloud forcing, the means must be developed to estimate what the upwelling shortwave and longwave irradiance would be if the clouds were not present. Estimating the upwelling longwave (LW) is particularly troublesome in

307

Broadband coherent light generation in Raman-active crystals driven by femtosecond laser fields  

E-Print Network (OSTI)

I studied a family of closely connected topics related to the production and application of ultrashort laser pulses. I achieved broadband cascade Raman generation in crystals, producing mutually coherent frequency sidebands which can possibly be used to synthesize optical pulses as short as a fraction of a femtosecond (fs). Unlike generation using gases, there is no need for a cumbersome vacuum system when working with room temperature crystals. Our method, therefore, shows promise for a compact system. One problem for sideband generation in solids is phase matching, because the dispersion is significant. I solved this problem by using non-collinear geometry. I observed what to our knowledge is a record-large number of spectral sidebands generated in a popular Raman crystal PbWO4 covering infrared, visible, and ultraviolet spectral regions, when I applied two 50 fs laser pulses tuned close to the Raman resonance. Similar generation in diamond was also observed, which shows that the method is universal. When a third probe pulse is applied, a very interesting 2-D color array is generated in both crystals. As many as 40 anti-Stokes and 5 Stokes sidebands are generated when a pair of time-delayed linear chirped pulses are applied to the PbWO4 crystal. This shows that pulses with picosecond duration, which is on the order of the coherence decay time, is more effective for sidebands generation than Fourier transform limited fs pulses. I also studied the technique of fs coherent Raman anti-Stokes scattering (CARS) which is used as a tool for detecting dipicolinic acid, the marker molecule for bacterial spores. I observed that there is a maximum when the concentration dependence of the near-resonant CARS signal is measured. I presented a model to describe this behavior, and found an analytical solution that agrees with our experimental data. Theoretically, I explored a possible application for single-cycle pulses: laser induced nuclear fusion. I performed both classical and quantum mechanical calculations for a system of two nuclei moving under a superintense ultrashort field. From our calculation I noted that the nuclear collisions occur on a sub-attosecond time scale, and are predicted to result in an emission of zeptosecond bursts of light.

Zhi, Miaochan

2007-12-01T23:59:59.000Z

308

Validation of ERBS Scanner Radiances  

Science Conference Proceedings (OSTI)

The earth radiation budget satellite (ERBS) has made broadband scanner measurements of the earth radiance for over 5 years. The redundancy between the shortwave, longwave, and total scanning radiometers and data averages have been used to ...

Richard N. Green; Lee M. Avis

1996-08-01T23:59:59.000Z

309

Parameterization of Atmospheric Radiative Transfer. Part II: Selection Rules  

Science Conference Proceedings (OSTI)

This paper describes simple, computationally efficient methods of calculating 2-stream broadband fluxes and heating rates in the shortwave and longwave for multilayered media. The method, herein referred to as selection rules, is used in ...

Philip M. Gabriel; Philip T. Partain; Graeme L. Stephens

2001-11-01T23:59:59.000Z

310

Is there a case for broadband utility communications networks? Valuing and pricing incremental communications capacity on electric utility smart grid networks  

SciTech Connect

Analysis of the potential for selling non-utility uses of broadband capability constructed in conjunction with Smart Grid/AMI deserves careful consideration. These services can be provided in a manner that neither creates unfair competition nor results in cross-subsidization of unregulated services by regulated services. (author)

Heidell, James; Ware, Harold

2010-01-15T23:59:59.000Z

311

Quantitative broadband absorption and scattering spectroscopy in turbid media by combined frequency-domain and steady state methodologies  

DOE Patents (OSTI)

A technique for measuring broadband near-infrared absorption spectra of turbid media that uses a combination of frequency-domain and steady-state reflectance methods. Most of the wavelength coverage is provided by a white-light steady-state measurement, whereas the frequency-domain data are acquired at a few selected wavelengths. Coefficients of absorption and reduced scattering derived from the frequency-domain data are used to calibrate the intensity of the steady-state measurements and to determine the reduced scattering coefficient at all wavelengths in the spectral window of interest. The absorption coefficient spectrum is determined by comparing the steady-state reflectance values with the predictions of diffusion theory, wavelength by wavelength. Absorption spectra of a turbid phantom and of human breast tissue in vivo, derived with the combined frequency-domain and steady-state technique, agree well with expected reference values.

Tromberg, Bruce J. (Irvine, CA); Berger, Andrew J. (Rochester, NY); Cerussi, Albert E. (Lake Forest, CA); Bevilacqua, Frederic (Costa Mesa, CA); Jakubowski, Dorota (Irvine, CA)

2008-09-23T23:59:59.000Z

312

Tropical Outgoing Longwave Radiation and Longwave Cloud Forcing Diurnal Cycles from CERES  

Science Conference Proceedings (OSTI)

The diurnal cycle is a fundamental earth system variability driven by daily variations in solar insolation. Understanding diurnal variability is important for characterizing top-of-atmosphere and surface energy budgets. Climatological and seasonal ...

Patrick C. Taylor

2012-12-01T23:59:59.000Z

313

392 JOURNAL OF CLIMATE VOLUME 19 Surface Cloud Forcing in the East Pacific Stratus Deck/Cold Tongue/ITCZ Complex*  

E-Print Network (OSTI)

Data from the Eastern Pacific Investigation of Climate Studies (EPIC) mooring array are used to evaluate the annual cycle of surface cloud forcing in the far eastern Pacific stratus cloud deck/cold tongue/ intertropical convergence zone complex. Data include downwelling surface solar and longwave radiation from 10 EPIC-enhanced Tropical Atmosphere Ocean (TAO) moorings from 8°S, 95°W to 12°N, 95°W, and the Woods Hole Improved Meteorology (IMET) mooring in the stratus cloud deck region at 20°S, 85°W. Surface cloud forcing is defined as the observed downwelling radiation at the surface minus the clear-sky value. Solar cloud forcing and longwave cloud forcing are anticorrelated at all latitudes from 12°N to 20°S: clouds tended to reduce the downward solar radiation and to a lesser extent increase the downward longwave radiation at the surface. The relative amount of solar radiation reduction and longwave increase depends upon cloud type and varies with latitude. A statistical relationship between solar and longwave surface cloud forcing is developed for rainy and dry periods and for the full record length in six latitudinal regions: northeast tropical warm pool, ITCZ, frontal zone, cold tongue, southern, and stratus deck regions. The buoy cloud forcing observations and empirical relations are compared with the International Satellite Cloud Climatology Project (ISCCP) radiative flux data (FD) dataset and are used as benchmarks to

Meghan F. Cronin; Nicholas A. Bond; Christopher W. Fairall; Robert A. Weller

2004-01-01T23:59:59.000Z

314

Investigation of broadband over power line channel capacity of shipboard power system cables for ship communications networks  

E-Print Network (OSTI)

Broadband over Power Line (BPL) technology has garnered significant attention lately due to recent advancements in solid state technologies and channel coding schemes. The successful application of BPL technology for in-home automation and networking has led to suggestions of applying BPL in other systems including ships. The application of BPL technology using the Shipboard Power System (SPS) as a potential communications network for ship automation systems has been proposed, to achieve recent U.S. Navy ship management concepts geared toward reducing ship manning while improving operational efficiency. This thesis presents an analytical model developed to examine the channel response characteristics and estimated throughput capacity of SPS cables. The work used a multiconductor transmission line theory based approach to model the channel response of SPS distribution lines and estimated the channel throughput capacity using a “water-filling” communication technique. This work found that BPL using the SPS holds a strong potential for use as a communications network for ship communication systems.

Akinnikawe, Ayorinde

2008-12-01T23:59:59.000Z

315

Research Highlight  

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

ARM Program Research Improves Longwave Radiative Transfer Models ARM Program Research Improves Longwave Radiative Transfer Models Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Radiative Processes Journal Reference: The QME AERI LBLRTM: A closure experiment for downwelling high spectral resolution infrared radiance. D.D. Turner, D.C. Tobin, S.A. Clough, P.D. Brown, R.G. Ellingson, E.J. Mlawer, R.O. Knuteson, H.E. Revercomb, T.R. Shippert, and W.L. Smith. 2004. Journal of Atmospheric Science, 61, 2657-2675. Top panels: Examples of downwelling infrared radiance observed by the AERI for two different clear sky cases with different amounts of water vapor. Bottom panels: Differences between the AERI observations and calculations

316

ARM08_khaiyer_final.ppt  

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

Improvement of Broadband Shortwave and Longwave Fluxes over ARM Domains Improvement of Broadband Shortwave and Longwave Fluxes over ARM Domains M. M. Khaiyer, M.L. Nordeen, R. Palikonda, Y. Yi Science Systems and Applications Inc, Hampton, VA D. R. Doelling, P. Minnis NASA Langley Research Center, Hampton, VA 1.Introduction * As part of a cloud and radiation product dataset, the NASA Langley Cloud Group provides broadband (BB) shortwave (SW) and longwave (LW) fluxes derived from geostationary operational environmental satellite (GOES) narrowband (NB) radiances - Available from May 1998 to August 2005 * Narrow-to-broadband (NB-BB) conversion technique based on regressing coincident co-located 1° averaged CERES BB and GOES NB fluxes. Regression coefficients unique for each domain (SGP, MASRAD, etc). Currently for GOES8 (Apr00-Mar03), there is only a single NB-BB fit

317

BROADBAND TIME-RESOLVED E{sub p,i}-L{sub iso} CORRELATION IN GAMMA-RAY BURSTS  

SciTech Connect

We report the results of a systematic study of the broadband (2-2000 keV) time-resolved prompt emission spectra of a sample of gamma-ray bursts (GRBs) detected with both Wide Field Cameras on board the BeppoSAX satellite and the BATSE experiment on board CGRO. In this first paper, we study the time-resolved dependence of the intrinsic peak energy E{sub p,i} of the E F(E) spectrum on the corresponding isotropic bolometric luminosity L{sub iso}. The E{sub p,i}-L{sub iso} relation or the equivalent relation between E{sub p,i} and the bolometric released energy E{sub iso}, derived using the time-averaged spectra of long GRBs with known redshift, is well established, but its physical origin is still a subject of discussion. In addition, some authors maintain that these relations are the result of instrumental selection effects. We find that not only a relation between the measured peak energy E{sub p} and the corresponding energy flux, but also a strong E{sub p,i} versus L{sub iso} correlation are found not only within each burst, but also are merging together the time-resolved data points from different GRBs. We do not expect significant instrumental selection effects that can affect the results obtained, apart from the fact that the GRBs in our sample are sufficiently bright to perform a time-resolved spectroscopy and that they have known redshift. If the fundamental physical process that gives rise to the GRB phenomenon does not depend on its brightness, we conclude that the E{sub p,i} versus L{sub iso} correlation found within each GRB is intrinsic to the emission process and that the correlations discovered by Amati et al. and Yonetoku et al. are likely not the result of selection effects. We also discuss the properties of the correlations found.

Frontera, F.; Guidorzi, C. [Dipartimento di Fisica, Universita di Ferrara, Via Saragat 1, I-44100 Ferrara (Italy); Amati, L.; Landi, R. [INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna, Via Gobetti 101, I-40129 Bologna (Italy); In't Zand, J., E-mail: frontera@fe.infn.it [Space Research Organization in the Netherlands, Sorbonnelaan 2, NL-3584 CA Utrecht (Netherlands)

2012-08-01T23:59:59.000Z

318

Implementing the National Broadband  

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

SPACE DATA CORPORATION SPACE DATA CORPORATION Space Data is the leader in high altitude balloon borne communications platforms where between 65-100,000 feet we have flown over 20,000 commercial SkySite® flights totaling over 250,000 flight hours as well as supply the military with our StarFighter® platform which extends 2 way radio communications from under 10 miles to over 400 miles. We were founded in 1999 and to develop our technology we decided that the ReFlex paging protocol was appropriate and that FCC licensed spectrum was available. Hence we participated in FCC Auctions 40, 41 and 50 and through secondary market transactions accumulated almost 2 of the 3 MHz allocated to Narrowband PCS (NPCS) in the 901/930/940 MHz bands. Through the auctions and continued subsequent transactions we have been able to

319

Implementing the National Broadband  

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

GREAT RIVER ENERGY GREAT RIVER ENERGY I. Introduction a. Identification/description of our company Great River Energy (GRE) is a not-for-profit generation and transmission cooperative which provides wholesale electricity to more than 1.7 million people through 28 member distribution cooperatives in Minnesota and Wisconsin. Great River Energy is the second largest utility in the state, based on generating capacity, and the sixth largest generation and transmission (G&T) cooperative in the United States. Great River Energy's member cooperatives range from those in the outer-ring suburbs of the Twin Cities to the Arrowhead region of Minnesota to the farmland of southwestern Minnesota. Great River Energy's largest

320

Implementing the National Broadband  

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

TACOMA PUBLIC UTILITIES TACOMA PUBLIC UTILITIES 3628 S. 35 TH ST. TACOMA WASHINGTON 98419 I. Introduction a. Identification/description of your company. Tacoma Public Utilities (TPU) is owned by the City of Tacoma. TPU management reports to a separate Public Utility Board that is accountable to the Tacoma City Council. The Utility comprises three main operating divisions: Water, Power and Rail. b. Overview of communications networks i. Tacoma Public Utilities (TPU), operates several Private radio networks. Tacoma Power (TPWR), uses an extensive private Microwave system, a private wide-area VHF land mobile radio system at all Hydro facilities with VHF paging, and a private trunked-900 MHz voice radio system. Tacoma Rail operates a wide-area VHF radio system on licensed Rail frequencies. Tacoma

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Implementing the National Broadband  

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

Consumer and the Consumer and the Smart Grid: Data Access, Third Party Use and Privacy NBP RFI: Data Access, Third Party Use and Privacy COMMENTS OF BALTIMORE GAS & ELECTRIC COMPANY I. Introduction BGE is the nation's oldest and most experienced utility company. It has met the energy needs of Central Maryland for nearly 200 years. Today, it serves more than 1.2 million business and residential electric customers and approximately 650,000 gas customers in an economically diverse, 2,300-square-mile area encompassing Baltimore City and all or part of ten central Maryland counties. BGE already has many systems that it considers to be "smart." For example:

322

Implementing the National Broadband  

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

CROW WING POWER CROW WING POWER I. Introduction a. Identification/description of our company Crow Wing Power is a not-for-profit electric distribution cooperative which provides retail electricity to over 41,500 consumers in central Minnesota. Crow Wing Power owns and operates approximately 2,500 miles of overhead distribution lines and 2,700 miles of underground distribution lines. Our service territory cover approximately 4000 sq. miles and consists of flat farm fields in the south and to the north there are rolling hills, many lakes and heavy tree cover. Our main power supplier is Great River Energy. We also buy power from Basin Electric. b. Overview of communications networks 1. User of Great River Energy 700 MHz system. 2. Fiber 3. VHF Land Mobile Radios

323

Implementing the National Broadband  

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

EAST CENTRAL ENERGY-MINNESOTA EAST CENTRAL ENERGY-MINNESOTA I. Introduction a. Identification/description of your company. East Central Energy is a non-profit electric cooperative serving 57,000 customers and is located in east central Minnesota and northwestern Wisconsin. The cooperative serves an area of approximately 4,300 square miles. The geography varies from flat to large rolling hills with many lakes and wooded areas. For the most part the area is relatively sparsely populated. The average consumer density is about 7 consumers per mile. All power purchases are from our cooperative power supplier Great River Energy (GRE). II. Executive Summary Because of the lack of ubiquitous coverage by major carriers or operating telephone companies, East Central Energy has contracted with our G&T, Great River Energy

324

Implementing the National Broadband  

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

THE LOWER COLORADO RIVER AUTHORITY (LCRA) THE LOWER COLORADO RIVER AUTHORITY (LCRA) I. Introduction a. Identification/description of your company. LCRA is a conservation and reclamation district created by the Texas Legislature in 1934. It has no taxing authority and operates solely on utility revenues and fees generated from supplying energy, water and community services. LCRA supplies low-cost electricity for Central Texas, manages water supplies and floods in the lower Colorado River basin, develops water and wastewater utilities, provides public parks, and supports community and economic development in 58 Texas counties. LCRA is not an electric distribution utility but it sells wholesale electricity to more than 40 retail utilities, including cities and electric cooperatives

325

Implementing the National Broadband  

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

STEELE-WASECA COOPERATIVE ELECTRIC STEELE-WASECA COOPERATIVE ELECTRIC I. Introduction a. Identification/description of your company. Steele-Waseca Cooperative Electric is a distribution cooperative that mainly serves the rural area of the three counties of Rice, Steele, and Waseca in southwestern Minnesota. Some of Steele-Waseca Cooperative Electric's service territory also exists in the surrounding counties of Blue Earth, Dodge, Faribault, Freeborn and Le Sueur. With headquarters in Owatonna, MN, Steele-Waseca Cooperative Electric serves 9,583 members. The majority of the members served are in rural, agricultural areas though there are residential areas in Steele-Waseca Cooperative Electric territory in the bedroom communities of Medford and Lonsdale. Industrial and commercial

326

Implementing the National Broadband  

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

AVISTA CORPORATION AVISTA CORPORATION I. Introduction Founded in 1889, Avista engages in energy production, transmission and distribution, as well as other energy-related activities. An investor-owned utility (New York Stock Exchange ticker symbol: AVA) with annual revenues of more than $1.5 billion, Avista provides electric service to 356,000 customers and natural gas to 316,000 customers in a service territory of more than 30,000 square miles. We serve those customers with a mix of hydro, natural gas, coal, biomass, wind and other generation delivered over 2,600 miles of transmission line, 17,800 miles of distribution lines and 7,600 miles of natural gas distribution mains. Avista is headquartered in Spokane, Washington, and our nearly 1,600 employees work in

327

Implementing the National Broadband  

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

DAKOTA ELECTRIC ASSOCIATION DAKOTA ELECTRIC ASSOCIATION I. Introduction a. Identification/description of our company Dakota Electric Association (DEA) is an Incorporated Cooperative Association which distributes electricity to more than 100,000 members in Dakota County and surrounding areas. DEA is the second largest electric cooperative in the state of Minnesota, and is a member cooperative of Great River Energy (GRE). II. Executive Summary DEA has deployed a fully integrated IP network to 26 substation sites. An IP based network transports data information for Supervisory Control and Data Acquisition (SCADA) and Load Management systems. A private Wide Area Network (WAN) was implemented by DEA in 2001 due to lack of comprehensive coverage by major carriers. In addition to the WAN, DEA relies on commercial services to communicate with load

328

Techniques in Broadband Interferometry  

SciTech Connect

This is a compilation of my patents issued from 1997 to 2002, generally describing interferometer techniques that modify the coherence properties of broad-bandwidth light and other waves, with applications to Doppler velocimetry, range finding, imaging and spectroscopy. Patents are tedious to read in their original form. In an effort to improve their readability I have embedded the Figures throughout the manuscript, put the Figure captions underneath the Figures, and added section headings. Otherwise I have resisted the temptation to modify the words, though I found many places which could use healthy editing. There may be minor differences with the official versions issued by the US Patent and Trademark Office, particularly in the claims sections. In my shock physics work I measured the velocities of targets impacted by flyer plates by illuminating them with laser light and analyzing the reflected light with an interferometer. Small wavelength changes caused by the target motion (Doppler effect) were converted into fringe shifts by the interferometer. Lasers having long coherence lengths were required for the illumination. While lasers are certainly bright sources, and their collimated beams are convenient to work with, they are expensive. Particularly if one needs to illuminate a wide surface area, then large amounts of power are needed. Orders of magnitude more power per dollar can be obtained from a simple flashlamp, or for that matter, a 50 cent light bulb. Yet these inexpensive sources cannot practically be used for Doppler velocimetry because their coherence length is extremely short, i.e. their bandwidth is much too wide. Hence the motivation for patents 1 & 2 is a method (White Light Velocimetry) for allowing use of these powerful but incoherent lamps for interferometry. The coherence of the illumination is modified by passing it through a preparatory interferometer.

Erskine, D J

2004-01-04T23:59:59.000Z

329

Implementing the National Broadband  

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

MILLE LACS ENERGY COOPERATIVE I. Introduction a. Identificationdescription of our company. Mille Lacs Energy Cooperative is a not-for-profit distribution cooperative serving parts...

330

Public Safety Broadband Network  

Science Conference Proceedings (OSTI)

... EMNTG) performs RF network analysis and optimization of ... Network analyses can be used to predict ... of an incident area communication scenario. ...

2012-02-22T23:59:59.000Z

331

Broadband CARS Microscopy  

Science Conference Proceedings (OSTI)

... The CARS signal has a frequency-independent non-resonant component and a frequency ... is out of phase with respect to the driving electric field of ...

2012-10-05T23:59:59.000Z

332

Implementing the National Broadband  

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

MEEKER COOPERATIVE LIGHT AND POWER-MINNESOTA MEEKER COOPERATIVE LIGHT AND POWER-MINNESOTA I. Introduction a. Identification/description of your company. Meeker Cooperative Light and Power (MCLP) is a non-profit electric cooperative serving 9120 consumers and is located in central Minnesota. The cooperative serves an area of approximately 1410 square miles. The geography varies from flat to moderate rolling hills with many lakes and wooded areas. For the most part the area is relatively sparsely populated. The average consumer density is less than five consumers per mile. All power purchases are from our cooperative power suppliers of Basin Electric Power COOP and Great River Energy (GRE). Overview of communications networks 1. 220 MHz radio point to point 2. 900 MHz MAS radio

333

Preliminary Analysis of ARM SGP Area Sky Cover and Downwelling SW Irradiance  

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

Clarifying and Implementing a Stricter DOD Definition Across Datastreams Clarifying and Implementing a Stricter DOD Definition Across Datastreams C. Sivaraman, B. Ermold, M. Macduff Pacific Northwest National Laboratory Definition of DOD: All dimension, attribute and variable types and names are considered part of a DOD. A change in any part of the DOD is considered a version change. Outcomes: ACRF enforces greater consistency in data Downstream users benefit (DQ, VAPs, scientists) Identify inconsistencies across datastreams Datastream development is more efficient BODS interface, updated libraries Improved data analysis tools for ACRF and ARM Visual Datastream history tool (below) Issues with current DOD history: The DOD History page: http://science.arm.gov/tool/dod/showdod.php * Tracks both content and structure. * Needs Custom Configuration

334

Enhancement of Wind-Driven Upwelling and Downwelling by Alongshore Bathymetric Variability  

Science Conference Proceedings (OSTI)

Steady wind-driven flow along a shelf of changing width is described with a frictional barotropic model valid in the limit of small Rossby and Burger number. In these limits, an alongshore wind drives enhanced onshelf transport in a coastal ocean ...

James M. Pringle

2002-11-01T23:59:59.000Z

335

ARM - Publications: Science Team Meeting Documents: Determination of the  

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

Determination of the Arctic Indirect Aerosol Effect from AERI and Determination of the Arctic Indirect Aerosol Effect from AERI and Multispectral Radiometer Data Lubin, Dan University of California, San Diego Vogelmann, Andrew Brookhaven National Laboratory We have detected and quantified the aerosol indirect radiative effect in the longwave by identifying the spectral signatures of liquid water clouds having smaller droplet effective droplet radius using AERI. Statistically significant differences in the longwave emission spectra appear between low CN and high CN cases as measured in NOAA CMDL aerosol number concentration data at Barrow, Alaska. An independent verification of this indirect effect detection is provided by downwelling longwave flux measurements from the NSA pyrgeometers, which show consistently larger fluxes in the high CN

336

Research Highlight  

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

Continuous Clear-Sky Longwave from Surface Measurements Continuous Clear-Sky Longwave from Surface Measurements Download a printable PDF Submitter: Long, C. N., Pacific Northwest National Laboratory Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Long, CN, and DD Turner. 2008. "A method for continuous estimation of clear-sky downwelling longwave radiative flux developed using ARM surface measurements." Journal of Geophysical Research 113, D18206, doi:10.1029/2008JD009936. Comparison of clear-sky RT model calculations (black) and our estimates (gray) with detected LW effective clear-sky measurements from the ACRF SGP site from 1 March through 31 May 2003, showing that our LW estimates do as well as detailed model calculations in comparison with actual LW

337

ARM - Publications: Science Team Meeting Documents: Using ARM data to  

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

Using ARM data to evaluate the dependence of surface downward longwave Using ARM data to evaluate the dependence of surface downward longwave radiation on near-surface temperature and water vapour path, in both ARM observations and the Met Office NWP model. Henderson, Peter Environmental Systems Science Centre Slingo, Anthony Environmental Systems Science Centre In this work, we continue our comparisons between ARM data and simulations from the UK Met Office Numerical Weather Prediction (NWP) model. The present analysis focuses on the variables that control the downwelling longwave radiation at the surface, in particular the column water vapour and near-surface temperature. Water vapour is both a source and a sink of latent heat, is an active modulator of atmospheric radiative transfer and therefore influences both the general circulation and the global energy

338

The Parameterization of Longwave Flux in Energy Balance Climate Models  

Science Conference Proceedings (OSTI)

Many climate models of the energy balance type parameterize the zonally-averaged infrared flux at the top of the atmosphere in terms of the surface (or sea level) temperature T and cloud cover n in the form I = A + BT ? (C + DT)nMost recent ...

Ian Simmonds; Cher Chidzey

1982-10-01T23:59:59.000Z

339

Scene Radiance–Dependent Intersatellite Biases of HIRS Longwave Channels  

Science Conference Proceedings (OSTI)

Measurements from the simultaneous nadir overpass (SNO) observations of the High Resolution Infrared Radiation Sounder (HIRS) are examined. The SNOs are the measurements taken at the orbital intersections of each pair of satellites viewing the ...

Lei Shi; John J. Bates; Changyong Cao

2008-12-01T23:59:59.000Z

340

Outgoing Longwave Radiation due to Directly Transmitted Surface Emission  

Science Conference Proceedings (OSTI)

A frequently used diagram summarizing the annual- and global-mean energy budget of the earth and atmosphere indicates that the irradiance reaching the top of the atmosphere from the surface, through the midinfrared atmospheric window, is 40 W m?2; ...

S. M. S. Costa; K. P. Shine

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Angular Distributions of Downward Longwave Radiance and Their Meteorological Applications  

Science Conference Proceedings (OSTI)

Measured thermal radiances (? > 3 ?m) from clear and cloudy skies are averaged over azimuth angles to obtain average sky radiances at various zenith angles. The observed variation of sky emissivity with zenith angle can be explained through the ...

Charles A. Coombes; Anthony W. Harrison

1986-08-01T23:59:59.000Z

342

The Clouds and the Earth's Radiant Energy System (CERES) Sensors and Preflight Calibration Plans  

Science Conference Proceedings (OSTI)

The Clouds and the Earth's Radiant Energy System (CERES) spacecraft sensors are designed to measure broadband earth-reflected solar shortwave (0.3–5 µm) and earth-emitted longwave (5– > 100 µm) radiances at the top of the atmosphere as part of ...

Robert B. Lee III; Bruce R. Barkstrom; G. Louis Smith; John E. Cooper; Leonard P. Kopia; R. Wes Lawrence; Susan Thomas; Dhirendra K. Pandey; Dominique A. H. Crommelynck

1996-04-01T23:59:59.000Z

343

Cell Broadband Engine Programming Handbook  

E-Print Network (OSTI)

are class li- braries like MFC, ACE, and AWT that encapsulate native OS C APIs, such as sockets, pthreads data into classes. In our logging example, for instance, we can leverage the following Guard class of how the program's flow of control exits a scope: template class Guard { public: Guard

Lanterman, Aaron

344

Raciometry W. J:. Shaw and C. D. Whiteman Pacific Northwest Laboratory(a)  

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

W. J:. Shaw and C. D. Whiteman W. J:. Shaw and C. D. Whiteman Pacific Northwest Laboratory(a) Richland, WA 99352 Field measurements to evaluate the parameterizations used in this model were carried out in May 1992 under clear skies using short- and long-wave radiometers mounted on a computer-driven platform. The platform repeatedly stepped through 360 degrees of azimuth and 20 degrees of elevation about the horizontal over a 24-h period. Radiosondes were released to account for the dependence of downwelling long-wave radiance on atmospheric water vapor. These observations compare satisfactorily with model integrations. Using the parameterized radiances and Gaussian tipping in one dimension, we have shown tnat the balloon-borne radiometer platform will work satisfactorily if oscillations about level are on the order of a degree or

345

Cloud microphysical properties retrieved from downwelling infrared radiance measurements made at Eureka, Nunavut, Canada (2006-2009)  

Science Conference Proceedings (OSTI)

The radiative properties of clouds are related to cloud microphysical and optical properties, including water path, optical depth, particle size, and thermodynamic phase. Ground-based observations provide high quality, long-term, continuous ...

Christopher J. Cox; David D. Turner; Penny M. Rowe; Matthew D. Shupe; Von P. Walden

346

ARM - Instrument - spn  

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

govInstrumentsspn govInstrumentsspn Documentation SPN : Instrument Mentor Monthly Summary (IMMS) reports SPN : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Sunshine Pyranometer (SPN) Instrument Categories Radiometric The Sunshine Pyranometer (SPN) measures total and diffuse short wave solar irradiance with an array of seven thermopile detectors arranged beneath a permanent shading pattern. The instrument is able to measure both total and diffuse irradiance with no moving parts. Primary Measurements The following measurements are those considered scientifically relevant. Shortwave broadband diffuse downwelling irradiance Shortwave broadband total downwelling irradiance

347

PowerPoint Presentation  

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

STM BBHRP STM BBHRP NASA Langley Research Center / Atmospheric Sciences ARM March 10-14, 2008 Improvements in Broadband Shortwave and Longwave Fluxes over ARM Domains M.M. Khaiyer, D.R.Doelling, M.L. Nordeen, R. Palikonda, Y. Yi Science Systems and Applications, Inc. P. Minnis National Aeronautics and Space Administration Langley Research Center Climate Science Branch ARM STM BBHRP NASA Langley Research Center / Atmospheric Sciences ARM March 10-14, 2008 Introduction * NASA Langley Cloud Group provides broadband (BB) shortwave (SW) and longwave (LW) fluxes derived from GOES narrowband (NB) radiances (Available from May 1998 to August 2005) * Narrow-to-broadband (NB-BB) conversion technique based on regressing coincident co-located 1° averaged CERES BB and GOES NB fluxes.

348

Request for Information (RFI) from the Department of Energy for Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy  

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

NBP RFI: Data Access NBP RFI: Data Access Honeywell Responses To Request for Information (RFI) from the Department of Energy on Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy 1. Who owns energy consumption data? The utility needs access to "raw" billing data, i.e., meter readings that take place every time the price changes and allow the utility to calculate the consumption during a particular time period and rate the consumption according to the price in effect during that period. Based on the FIPP principle of data minimization, it is expected that these meter readings would occur just a few times per day (e.g., every time a new price period begins

349

Microsoft PowerPoint - SurfSpecAlb_cnl4.ppt  

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

28 March 2007 28 March 2007 Process for Estimating Broadband and Spectral Albedo 'Diffuse' Albedo - refers to albedo when direct/total SW < 15% * broadband and spectral albedo for a given day are nearly constant, and nearly equal to the albedo of clear sky conditions for a period shortly before and following solar noon. 'Direct' Albedo Slope and Offset - refers to albedo when direct/total SW >= 15% * broadband and spectral broadband albedo are relatively linear with respect to the cosine solar zenith angle. Albedo Estimation * Albedos characterized as either 'diffuse' or 'direct' based on whether the ratio of best estimate direct to best estimate total downwelling irradiance is above or below 15% * Missing albedos estimated using either the albedo noon value for 'diffuse'

350

sheaffer-99.PDF  

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

Diurnal Variations of Outgoing Longwave Diurnal Variations of Outgoing Longwave Radiation Over the Tropical Oceans J. D. Sheaffer and W. M. Gray Department of Atmospheric Science Colorado State University Fort Collins, Colorado Introduction Several current problems in atmospheric radiation over the tropical oceans may have at least partial solutions as effects of diurnal variations of outgoing longwave radiation (OLR). At issue are explanations for the following: a) excessively large amplitudes (in relation to theory) of the diurnal thermal tides over the tropical oceans (Braswell and Lindzen 1998); b) reported observations of excessively large direct atmospheric absorption of incident broadband solar radiation, which conflict with prior work and concurrent, collocated narrowband measurements centered in the visible spectrum

351

hagan-98.pdf  

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

Aerobot-based Measurements of the Profile of Aerobot-based Measurements of the Profile of Downwelling Shortwave Irradiance D. Hagan, J.-F. Blavier, and D. Crisp Jet Propulsion Laboratory California Institute of Technology Pasadena, California L. Di Girolamo University of Chicago Chicago, Illinois T. P. Ackerman The Pennsylvania State University College Park, Pennsylvania Summary Using a helium plus reversible fluid balloon system as the observing platform, multiple profiles of shortwave irradi- ance between 4 km and 10 km were recently obtained over the Los Angeles basin. Measurements of downwelling hemispheric broadband irradiance were made over a period of 6 hours in conditions that could be characterized by a mid-latitude, summer model atmosphere. These data are described and compared to model computations using a

352

Section 42  

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

A Rotating Shadow Arm for Broadband Hemispheric A Rotating Shadow Arm for Broadband Hemispheric Radiometers: Instrument Design and Concept Verification Using Atmospheric Radiation Measurement Southern Great Plains Radiometer Measurements C.N. Long, C.F. Pavloski, and T.P. Ackerman Department of Meteorology Pennsylvania State University University Park, Pennsylvania Measurement of the components of downwelling broadband The total and diffuse irradiance measurements are output shortwave (SW) irradiance at the surface can be difficult to every minute. These values include 30 seconds of measure- accomplish. Because the diffuse irradiance under clear (i.e., ments for the total irradiance average and 17 seconds for the cloudless) skies is typically only about 10% of the magnitude diffuse. Information on whether the shading arm was

353

ARM - Datastreams - prpfrsr  

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

Datastreamsprpfrsr Datastreamsprpfrsr Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : PRPFRSR Portable Radiation Package: Fast Rotating Shadowband Radiometer Active Dates 2012.11.02 - 2013.09.26 Measurement Categories Radiometric Originating Instrument Portable Radiation Package (PRP) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Bin numbers for sweep measurements unitless bin ( bin ) Shortwave broadband total downwelling irradiance Shadow record, mean hemispheric irradiance at end of sweep, broadband channel mV end_sweep_hemisp_broadband ( time )

354

The Extraction of the Thermal Emission Band of Methane from the Longwave Spectrum of the Atmosphere  

Science Conference Proceedings (OSTI)

The thermal emission band at 1306 cm?1 of atmospheric methane, an important greenhouse gas, is presented for a cold, clear day in January 1994. A spectrum of the nonmethane emission features has been simulated using the FASCD3P radiation code and ...

W. F. J. Evans; E. Puckrin

1995-12-01T23:59:59.000Z

355

Computation of Vertical Profiles of Longwave Radiative Cooling over the Equatorial Pacific  

Science Conference Proceedings (OSTI)

An important quantity whose magnitude has not been thoroughly examined is the vertical distribution of heating in the Tropics. The details of the vertical distribution of heating have a significant impact on a number of phenomena, including the ...

Perry G. Ramsey; Dayton G. Vincent

1995-05-01T23:59:59.000Z

356

Surface Irradiances Consistent with CERES-Derived Top-of-Atmosphere Shortwave and Longwave Irradiances  

Science Conference Proceedings (OSTI)

The estimate of surface irradiance on a global scale is possible through radiative transfer calculations using satellite-retrieved surface, cloud, and aerosol properties as input. Computed top-of-atmosphere (TOA) irradiances, however, do not ...

Seiji Kato; Norman G. Loeb; Fred G. Rose; David R. Doelling; David A. Rutan; Thomas E. Caldwell; Lisan Yu; Robert A. Weller

2013-05-01T23:59:59.000Z

357

The Effect of Increasing C02 Amounts on TOVS Longwave Sounding Channels  

Science Conference Proceedings (OSTI)

Radiative transfer models used in processing TIROS-N sounder data via Physical retrieval schemes do not explicitly account for changes in CO2 mixing ratio. However, CO2 mixing ratios have increased by approximately 30 ppmv over the past 17 years. ...

D. S. Turner

1993-11-01T23:59:59.000Z

358

The Fast Longwave and Shortwave Flux (FLASHFlux) Data Product: Single Scanner Footprint Fluxes  

Science Conference Proceedings (OSTI)

The Clouds and the Earth’s Radiant Energy Systems (CERES) project utilizes radiometric measurements taken aboard the Terra and Aqua spacecrafts to derive the world-class data products needed for climate research. Achieving the exceptional fidelity ...

David P. Kratz; Paul W. Stackhouse Jr.; Shashi K. Gupta; Anne C. Wilber; Parnchai Sawaengphokhai; Greg R. McGarragh

359

Modeling of Downward Surface Longwave Flux Density for Global Change Applications and Comparison with Pyrgeometer Measurements  

Science Conference Proceedings (OSTI)

The success of satellite monitoring of global climate change depends on the ability to validate satellite inference methods against accurate “ground truth.” Under a recent World Meteorological Organization—World Climate Research Program activity ...

F. Miskolczi

1994-04-01T23:59:59.000Z

360

A Neural Network Approach for a Fast and Accurate Computation of a Longwave Radiative Budget  

Science Conference Proceedings (OSTI)

The authors have investigated the possibility of elaborating a new generation of radiative transfer models for climate studies based on the neural network technique. The authors show that their neural network–based model, NeuroFlux, can be used ...

F. Chevallier; F. Chéruy; N. A. Scott; A. Chédin

1998-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Broadband transport — the synchronous digital hierarchy  

Science Conference Proceedings (OSTI)

All data networks require a physical transmission medium to convey information between network nodes. Within a local environment this physical medium might, for example, take the form of an Ethernet LAN, but wide area connections are provided using telecommunications ...

T. S. Brown; D. Rowland; A. Vinall; A. O‘Neill

1998-01-01T23:59:59.000Z

362

TOPICSTOPICS Broadband RFIC front-ends  

E-Print Network (OSTI)

and multifunctional microwave applications ·Polymer-ceramic materials & applications to miniature antennas and RFIC. Roblin R. G. Rojas P. Schniter O. Takeshita National Science Foundation Industry/University Cooperative Research Center Connection One: Communication Circuits and Systems The Ohio State University Industry Day

Volakis, John L.

363

ARM - Measurement - Shortwave broadband total net irradiance  

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

Systems External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model...

364

Intercalibration of Broadband Geostationary Imagers Using AIRS  

Science Conference Proceedings (OSTI)

Geostationary simultaneous nadir observations (GSNOs) are collected for Earth Observing System (EOS) Atmospheric Infrared Sounder (AIRS) on board Aqua and a global array of geostationary imagers. The imagers compared in this study are on (...

Mathew M. Gunshor; Timothy J. Schmit; W. Paul Menzel; David C. Tobin

2009-04-01T23:59:59.000Z

365

The Broadband Heating Rate Profile (BBHRP) VAP  

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

Ellingson Florida State University Tallahassee, Florida M. H. Zhang State University of New York at Albany Albany, New York Stony Brook R. A. Ferrare National Aeronautics and...

366

Broadband Nanoindentation Spectroscopy for Biological Materials  

Science Conference Proceedings (OSTI)

Fabrication of a Cellulosic Nanocomposite Scaffold with Improved Supermolecular Structure as a Potential Cardiovascular Tissue-Engineered Graft .

367

ARM - Measurement - Shortwave broadband total upwelling irradiance  

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

Research Australia Cessna 404 ARA-DIMONA : Airborne Research Australia Dimona Aircraft Laser Altimeter and Fluxes CM22-AIR-AND-GND : CM-22 Radiometer - Airborne and Ground Based...

368

A graphene-based broadband optical modulator  

... 6, a monolayer of graphene possesses a much stronger inter-bandopticaltransition,whichfindsapplicationsinnoveloptoelectro-nic devices such as ...

369

hagan-99.PDF  

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

Compact Spectral Radiometer for In Situ Solar Flux Compact Spectral Radiometer for In Situ Solar Flux Measurements D. E. Hagan, M. Foote, J.-F. Blavier, L. Wild, and E. Jones Jet Propulsion Laboratory California Institute of Technology Pasadena, California Introduction We describe here the breadboard version of a lightweight, compact radiometer, which uses microthermopile detectors for hemispheric measurements of broadband and spectral downwelling solar irradiance. The instrument has undergone initial operability tests, and some limited field characterization has been performed against an Eppley Precision Spectral Pyranometer (PSP). The radiometer has a unique combination of characteristics that allow it to provide scientific data not easily available with any other technique. These characteristics include:

370

Section 11  

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

Implications for Atmospheric State Specification from the Implications for Atmospheric State Specification from the AERI/LBLRTM Quality Measurement Experiment and the MWR/LBLRTM Quality Measurement Experiment S.A. Clough and P.D. Brown Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts J.C. Liljegren, T.R. Shippert, and D.D. Turner Pacific Northwest National Laboratory Richland, Washington R.O. Knuteson, H.E. Revercomb, and W.L. Smith University of Wisconsin Madison, Wisconsin Introduction The ongoing Atmospheric Emitted Radiance Interferometer (AERI)/Line By Line Radiative Transfer Model (LBLRTM) Quality Measurement Experiment (QME), in which the spectral residuals between the downwelling longwave radiance measured by the University of Wisconsin AERI at the Central Facility of the Southern Great Plains (SGP) site and

371

New Surface Meteorological Measurements at SGP,  

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

NM, March 22 - 26, 2004 NM, March 22 - 26, 2004 1 New Surface Meteorological Measurements at SGP, and Their Use for Assessing Radiosonde Measurement Accuracy L.M. Miloshevich National Center for Atmospheric Research Boulder, Colorado B.M. Lesht and M. Ritche Argonne National Laboratory Argonne, Illinois Introduction Several recent ARM investigations have been directed toward characterizing and improving the accuracy of ARM radiosonde water vapor measurements. Tobin et al. (2002) showed that calculating the downwelling and outgoing longwave fluxes with a target accuracy of 1 W m -2 requires knowing the total-column precipitable water vapor (PW) with 2% absolute accuracy and knowing the upper troposphere (UT) water vapor with 10% absolute accuracy. Turner et al. (2003) used an empirical

372

ARM - Publications: Science Team Meeting Documents  

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

3 Science Team Meeting 3 Science Team Meeting 2003 Proceedings Proceedings Sorted by Title Proceedings Sorted by Author Science Team Meeting Proceedings Cover image Proceedings of the Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting ARM-CONF-2003, April 2003 Broomsfield, Colorado For proper viewing, extended abstracts should be viewed with Adobe Acrobat Reader. Download the latest version from the Adobe Reader website. View session papers by Author or Title. * Poster abstract only; an extended abstract was not provided by the author(s). A 20-year Data Set of Downwelling Longwave Flux at the Arctic Surface from TOVS Satellite Data Francis, J.A., Schweiger, A., and Key, J. A Comparison of Aerosol Scattering Parameters Obtained by Ground-Based Remote Sensing and In-situ Profile Flights*

373

1  

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

Analysis of the AERI/LBLRTM QME Analysis of the AERI/LBLRTM QME D. C. Tobin, D. D. Turner, H. E. Revercomb, and R. O. Knuteson University of Wisconsin-Madison Madison Wisconsin S. A. Clough, and K. Cady-Pereira Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts Introduction A Quality Measurement Experiment (QME) comparing clear-sky downwelling longwave radiance at the surface from observations and model calculations has been performed by the Atmospheric Radiation Measurement (ARM) Program for many years (e.g., Brown et al. 1995; Clough et al. 1996). This QME has been used to (1) validate and improve absorption models and spectral line parameters used within the Line-by-Line Radiative Transfer Model (LBLRTM), (2) assess the ability to define the atmospheric

374

nab-ARM_land2_v5.ppt  

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

corresponding result can be seen in the corresponding result can be seen in the top-of-atmosphere long-wave flux. Figure 3 shows the modelled OLR and that measured by the ARG product. The difference is postulated to be because the AMF ground measurements are not representative of the area within the ARG pixel. Figure 4 shows the SEVIRI 10.8μm-derived skin temperatures: over the region, the temperature variations can account for an upwelling flux variation of 70 Wm -2 . At the AMF, Niamey airport site itself, the November-averaged skin temperature is ~319K. Figure 2: 0.6μm SEVIRI radiances. Mean of all times during November 2006 without cloud-cover. The dark band is the Niger river. Figure 1: TOA SW fluxes via two products from satellite measurements: ARG and HR. Figure 5: Daily-averaged down-welling LW flux, from AMF

375

X:\ARM_19~1\PGS29-47.WPD  

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

cm cm 1 Session Papers 29 Initial Analyses of Surface Spectral Radiance Between Observations and Line-by-Line Calculations P. D. Brown and S. A. Clough N. E. Miller, T. R. Shippert, and D. D. Turner Atmospheric and Environmental Research, Inc. Pacific Northwest National Laboratory Cambridge, Massachusetts Richland, Washington R. O. Knuteson, H. E. Revercomb, and W. L. Smith University of Wisconsin Madison, Wisconsin Introduction The evaluation and improvement of radiative transfer cal- culations are essential to attain improved performance of general circulation models (GCMs) for climate change applications. A Quality Measurement Experiment (QME) is being conducted to analyze the spectral residuals between the downwelling longwave radiance measured by the University of Wisconsin Atmospheric Emitted

376

A Climatology of Surface Cloud Radiative Effects at the ARM Tropical Western Pacific Sites  

SciTech Connect

Cloud radiative effects on surface downwelling fluxes are investigated using long-term datasets from the three Atmospheric Radiation Measurement (ARM) sites in the Tropical Western Pacific (TWP) region. The Nauru and Darwin sites show significant variability in sky cover, downwelling radiative fluxes, and surface cloud radiative effect (CRE) due to El Niño and the Australian monsoon, respectively, while the Manus site shows little intra-seasonal or interannual variability. Cloud radar measurement of cloud base and top heights are used to define cloud types so that the effect of cloud type on the surface CRE can be examined. Clouds with low bases contribute 71-75% of the surface shortwave (SW) CRE and 66-74% of the surface longwave (LW) CRE at the three TWP sites, while clouds with mid-level bases contribute 8-9% of the SW CRE and 12-14% of the LW CRE, and clouds with high bases contribute 16-19% of the SW CRE and 15-21% of the LW CRE.

McFarlane, Sally A.; Long, Charles N.; Flaherty, Julia E.

2013-04-01T23:59:59.000Z

377

Michalsky-JJ  

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

Accuracy of Broadband Shortwave Irradiance Accuracy of Broadband Shortwave Irradiance Measurements Using the Open Silicon Channel of the MFRSR J. J. Michalsky State University of New York Albany, New York Introduction The best routine Atmospheric Radiation Measurement (ARM) Program measurement of downwelling irradiance in the total shortwave band is a sum of diffuse horizontal irradiance and the direct normal irradiance component that is incident horizontally (diffuse horizontal). The latter is obtained by multiplying the direct normal irradiance by the cosine of the solar zenith angle. Ideally, these measurements are made with a near-zero-offset, shaded, thermopile pyranometer and a thermopile pyrheliometer, respectively. At each central and extended facility within the ARM Program, the shaded

378

Overview of observations from the RADAGAST experiment in Niamey, Niger. Part 2: Radiative fluxes and divergences  

SciTech Connect

Broadband shortwave and longwave radiative fluxes observed both at the surface and from space during the RADAGAST experiment in Niamey, Niger in 2006 are presented. The surface fluxes were measured by the Atmospheric Radiation Measurement (ARM) Program Mobile Facility (AMF) at Niamey airport, while the fluxes at the top of the atmosphere (TOA) are from the Geostationary Earth Radiation Budget (GERB) instrument on the Meteosat-8 satellite. The data are analyzed as daily averages, in order to minimise sampling differences between the surface and top of atmosphere instruments, while retaining the synoptic and seasonal changes that are the main focus of this study. A cloud mask is used to identify days with cloud from those with predominantly clear skies. The influence of temperature, water vapor, aerosols and clouds is investigated. Aerosols are ubiquitous throughout the year and have a significant impact on both the shortwave and longwave fluxes. The large and systematic seasonal changes in temperature and column integrated water vapor (CWV) through the dry and wet seasons are found to exert strong influences on the longwave fluxes. These influences are often in opposition to each other, because the highest temperatures occur at the end of the dry season when the CWV is lowest, while in the wet season the lowest temperatures are associated with the highest values of CWV. Apart from aerosols, the shortwave fluxes are also affected by clouds and by the seasonal changes in CWV. The fluxes are combined to provide estimates of the divergence of radiation across the atmosphere throughout 2006. The longwave divergence is remarkably constant through the year, because of a compensation between the seasonal variations in the outgoing longwave radiation (OLR) and surface net longwave radiation. A simple model of the greenhouse effect is used to interpret this result in terms of the dependence of the normalized greenhouse effect at the TOA and of the effective emissivity of the atmosphere at the surface on the CWV. It is shown that, as the CWV increases, the atmosphere loses longwave energy to the surface with about the same increasing efficiency with which it traps the OLR, thus keeping the atmospheric longwave divergence roughly constant. The shortwave divergence is mainly determined by the CWV and aerosol loadings and the effect of clouds is much smaller than on the component fluxes.

Slingo, A.; White, H. E.; Bharmal, N.; Robinson, G. J.

2009-02-25T23:59:59.000Z

379

An Assessment of the Surface Longwave Direct Radiative Effect of Airborne Saharan Dust during the NAMMA Field Campaign  

Science Conference Proceedings (OSTI)

In September 2006, NASA Goddard’s mobile ground-based laboratories were deployed to Sal Island in Cape Verde (16.73°N, 22.93°W) to support the NASA African Monsoon Multidisciplinary Analysis (NAMMA) field study. The Atmospheric Emitted Radiance ...

R. A. Hansell; S. C. Tsay; Q. Ji; N. C. Hsu; M. J. Jeong; S. H. Wang; J. S. Reid; K. N. Liou; S. C. Ou

2010-04-01T23:59:59.000Z

380

A Fast, Accurate Method of Computing Near-Surface Longwave Fluxes and Cooling Rates in the Atmosphere  

Science Conference Proceedings (OSTI)

As radiation plays a key role in the determination of the near-surface thermal environment, great accuracy is required in the computation of radiative fluxes, especially because a small error in the fluxes can lead to large errors in estimated ...

Saji Varghese; A. S. Vasudeva Murthy; Roddam Narasimha

2003-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Interannual Westward-Propagating Baroclinic Long-Wave Activity on Line P in the Eastern Midlatitude North Pacific  

Science Conference Proceedings (OSTI)

For the period 1959–81, quasi-zonal hydrographic sections have been made between the southern coast of Vancouver Island (49°N, 126°W) and Ocean Station P (50°N, 145°W) approximately every two months. Along this section (called Line P) ...

Warren B. White; Susumu Tabata

1987-03-01T23:59:59.000Z

382

The Sensitivity of a Simulated Extratropical Mesoscale Convective System to Longwave Radiation and Ice-Phase Microphysics  

Science Conference Proceedings (OSTI)

A two-dimensional, nonhydrostatic version of the Colorado State University Regional Atmospheric Modeling System (RAMS) was applied to the simulation of a midlatitude, continental mesoscale convective system. A control simulation was established ...

Sue Chen; William R. Cotton

1988-12-01T23:59:59.000Z

383

Heating, Moisture, and Water Budgets of Tropical and Midlatitude Squall Lines: Comparisons and Sensitivity to Longwave Radiation  

Science Conference Proceedings (OSTI)

A two-dimensional, time-dependent, and nonhydrostatic numerical cloud model is used to estimate the heating (Q1, moisture (Q2), and water budgets in the convective and stratiform regions for a tropical and a midlatitude squall line (EMEX and PRE-...

W. -K. Tao; J. Simpson; C. H. Sui; B. Ferrier; S. Lang; J. Scala; M. D. Chou; K. Pickering

1993-03-01T23:59:59.000Z

384

Diurnal Variation of Outgoing Longwave Radiation in the Vicinity of the South China Sea: Effect of Intraseasonal Oscillation  

Science Conference Proceedings (OSTI)

It has been observed in numerous studies that (a) tropical cumulus convection undergoes a distinct diurnal variation, and (b) this diurnal variation exhibits a significant contrast between land and sea. In addition, tropical cumulus convection, ...

Tsing-Chang Chen; Kiyotoshi Takahashi

1995-02-01T23:59:59.000Z

385

The Full-Spectrum Correlated-k Method for Longwave Atmospheric Radiative Transfer Using an Effective Planck Function  

Science Conference Proceedings (OSTI)

The correlated-k-distribution (CKD) method is widely used in the radiative transfer schemes of atmospheric models; it involves dividing the spectrum into a number of bands and then reordering the gaseous absorption coefficients within each one. ...

Robin J. Hogan

2010-06-01T23:59:59.000Z

386

Relationship between Ice Water Path and Downward Longwave Radiation for Clouds Optically Thin in the Infrared: Observations and Model Calculations  

Science Conference Proceedings (OSTI)

A vertically pointing 3.2-cm radar is used to observe altostratus and cirrus clouds as they pass overhead. Radar reflectivities are used in combination with an empirical Zi-IWC (ice water content) relationship developed by Sassen (1987) to ...

Taneil Uttal; Sergey Y. Matrosov; Jack B. Snider; Robert A. Kropfli

1994-03-01T23:59:59.000Z

387

A Multilayer Upper-Boundary Condition for Longwave Radiative Flux to Correct Temperature Biases in a Mesoscale Model  

Science Conference Proceedings (OSTI)

An upper-level cold bias in potential temperature tendencies of 10 K day?1, strongest at the top of the model, is observed in Weather Research and Forecasting (WRF) model forecasts. The bias originates from the Rapid Radiative Transfer Model ...

Steven M. Cavallo; Jimy Dudhia; Chris Snyder

2011-06-01T23:59:59.000Z

388

ARM - Datastreams - allruc20hybr  

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

hybr hybr Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : ALLRUC20HYBR Rapid Update Cycle (RUC) model: hybrid analysis data, 20-km resolution Active Dates 2002.05.15 - 2002.10.16 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Rapid Update Cycle Model Data (RUC) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Convection cape Convection cinhib Latent heat flux fluxlatentsrf Longwave broadband net irradiance fluxlwnetsrf Sensible heat flux fluxsensiblesrf Shortwave broadband total net irradiance

389

ARM - Datastreams - mfrirt25m  

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

Datastreamsmfrirt25m Datastreamsmfrirt25m Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : MFRIRT25M Infrared Thermometer (MFRIRT): upwelling radiance, instantaneous 20-sec at 25-meter height Active Dates 2001.04.01 - 2001.09.26 Measurement Categories Radiometric, Surface Properties Originating Instrument Multifilter Radiometer and Infrared Thermometer (MFRIRT) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Surface skin temperature sfc_ir_temp Longwave broadband upwelling irradiance up_long_hemisp Shortwave broadband total upwelling irradiance up_short_hemisp Locations Southern Great Plains

390

ARM - Datastreams - allruc40hybr  

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

hybr hybr Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : ALLRUC40HYBR Rapid Update Cycle (RUC) model: hybrid analyisis data, 40 km resolution Active Dates 1998.12.05 - 2002.04.16 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Rapid Update Cycle Model Data (RUC) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Convection cape Convection cinhib Latent heat flux fluxlatentsrf Longwave broadband net irradiance fluxlwnetsrf Sensible heat flux fluxsensiblesrf Shortwave broadband total net irradiance

391

Current Issues in Terrestrial Solar Radiation Instrumentation for Energy, Climate and Space Applications Preprint prepared for New RAD '99  

DOE Green Energy (OSTI)

Reductions of uncertainty in terrestrial solar radiation measurements are needed to validate the Earth's radiation balance derived from satellite data. Characterization of solar energy resources for renewable technologies requires greater time and spatial resolution for economical technology deployment. Solar radiation measurement research at the National Renewable Energy Laboratory addresses calibrations, operational characteristics, and corrections for terrestrial solar radiation measurements. We describe progress in measurements of broadband diffuse-sky radiation, and characterization of field instrument thermal offsets and spectral irradiance. The need and prospects for absolute references for diffuse and long-wave terrestrial solar radiation measurements are discussed. Reductions in uncertainty of broadband irradiance measurements from tens of watts per square meter to a few (one to two) watts per square meter are reported, which reduce time and labor to quantify and identify trends in artificial optical radiation sources, terrestrial solar radiation, and the Earth's radiation budget.

Stoffel, T. L.; Reda, I.; Myers, D. R.; Renne, D.; Wilcox, S. W.; Treadwell, J.

1999-10-20T23:59:59.000Z

392

Broadband Water Vapor Transmission Functions for Atmospheric IR Flux Computations  

Science Conference Proceedings (OSTI)

Transmission functions associated with water vapor molecular line and e-type absorption in the IR spectral regions are presented in the form of simple analytical functions and small tables, from which atmospheric IR fluxes and cooling rates can ...

Ming-Dah Chou

1984-05-01T23:59:59.000Z

393

Modeling broadband X-ray absorption of massive star winds  

E-Print Network (OSTI)

We present a method for computing the net transmission of X-rays emitted by shock-heated plasma distributed throughout a partially optically thick stellar wind from a massive star. We find the transmission by an exact integration of the formal solution, assuming the emitting plasma and absorbing plasma are mixed at a constant mass ratio above some minimum radius, below which there is assumed to be no emission. This model is more realistic than either the slab absorption associated with a corona at the base of the wind or the exospheric approximation that assumes all observed X-rays are emitted without attenuation from above the radius of optical depth unity. Our model is implemented in XSPEC as a pre-calculated table that can be coupled to a user-defined table of the wavelength dependent wind opacity. We provide a default wind opacity model that is more representative of real wind opacities than the commonly used neutral ISM tabulation. Preliminary modeling of \\textit{Chandra} grating data indicates that the ...

Leutenegger, Maurice A; Zsargó, Janos; Martell, Erin M; MacArthur, James P; Owocki, Stanley P; Gagné, Marc; Hillier, D John

2010-01-01T23:59:59.000Z

394

Forecasting broadband Internet adoption on trains in Belgium  

Science Conference Proceedings (OSTI)

Thanks to the massive success of mobile access devices such as netbooks or Apple's iPhone 3G, Internet on the move has become one of the prominent features of today's information society. With the emergence of wireless and mobile communication networks, ... Keywords: Railroad industry, Segmentation forecasting, User-centric research, Wireless Internet services

Tom Evens; Dimitri Schuurman; Lieven De Marez; Gino Verleye

2010-02-01T23:59:59.000Z

395

VIMOS total transmission profiles for broad-band filters  

E-Print Network (OSTI)

VIMOS is a wide-field imager and spectrograph mounted on UT3 at the VLT, whose FOV consists of four 7'x8' quadrants. Here we present the measurements of total transmission profiles -- i.e. the throughput of telescope + instrument -- for the broad band filters U, B, V, R, I, and z for each of its four quadrants. Those measurements can also be downloaded from the public VIMOS web-page. The transmission profiles are compared with previous estimates from the VIMOS consortium.

S. Mieske; M. Rejkuba; S. Bagnulo; C. Izzo; G. Marconi

2007-04-13T23:59:59.000Z

396

Re: Implementing the National Broadband Plan by Studying the...  

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

of Energy's ("Department") Request for Information ("RFI")1 to better understand the communications requirements of utilities, including the requirements of Smart Grid...

397

A Chance-Constrained Model & Cutting Planes for Fixed Broadband ...  

E-Print Network (OSTI)

... high-speed data connections by means of microwave radio transmission [2]. ..... By assuming the same availability for radio links using the highest modulation .

398

Fundamentals of WiMAX: Understanding Broadband Wireless Networking  

Science Conference Proceedings (OSTI)

This is the eBook version of the printed book. Praise for Fundamentals of WiMAX "This book is one of the most comprehensive books I have reviewed ... it is a must-read for engineers and students planning to remain current or who plan to pursue a career ...

Jeffrey Andrews; Arunabha Ghosh; Rias Muhamed

2011-10-01T23:59:59.000Z

399

Modeling broadband poroelastic propagation using an asymptotic approach  

E-Print Network (OSTI)

R. M. , 1998. Rapid subsidence over oil f elds measured byproduction and oil-related subsidence, in Land Subsi- dence,Strehle, R. W. , 1994. Subsidence in the wilmington oil f

Vasco, Donald W.

2010-01-01T23:59:59.000Z

400

ibm.com/redbooks ProgrammingtheCellBroadband  

E-Print Network (OSTI)

://www.coverme. com/?MKT=MFC Blue Cross http://www.useblue.com/index. en.html Green Shields Canada http://www.greenshield.ca/ Travel Medical Insurance Plans Manulife Financial http://www.coverme. com/?MKT=MFC Green Shield Canada/Health+insurance+summa ry?vgnLocale=en_CA Travel Guard Insurance http://www.travelguard.ca/quick- quote_2011_333283.html

Burgstaller, Bernd

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

A broadband wireless communications system for emergency management  

Science Conference Proceedings (OSTI)

Wireless communications have received much attention during the last decades due to easy implementation, the possibility of delivering multimedia services to rural communities, and the suitability for public safety and for communicating in emergency ...

F. Chiti; R. Fantacci; L. Maccari; D. Marabissi; D. Tarchi

2008-06-01T23:59:59.000Z

402

A Broadband Tensorial Magnetotelluric Study In The Travale Geothermal...  

Open Energy Info (EERE)

Login | Sign Up Wiki Browse Latinoamrica Buildings Clean Energy Economy Coordinated Low Emissions Assistance Network Geothermal Incentives and Policies International Clean Energy...

403

Broadband Over Power Lines (BPL) Simplified Emissions and Immunity Testing  

Science Conference Proceedings (OSTI)

The FCC Report & Order 04-245 calls out procedures for Certification testing of BPL components, which is required of BPL equipment manufacturers in order to sell their products. The test procedures for this Certification testing are contained in EPRI Technical Update 1011663. The FCC Certification testing regime is rather complicated to use for simply validating that the field strength is below the legal limits. A simplified emissions test procedure for field strength was needed for utilities to assure t...

2006-09-26T23:59:59.000Z

404

A Context Aware Interactive Robot for Broadband Wireless Learning  

Science Conference Proceedings (OSTI)

Recently, with the advantages of peer tutoring, robot for education usage has been the new trend for new generation leaning technology. Robot is not only a toy, but also your learning partner. We considered integrating speech, position information and ... Keywords: robot, learning

Eric Hsiao-kuang Wu; Yung-Lun Ding; Chi-Yun Liu; Yi-Kai Chiang

2009-05-01T23:59:59.000Z

405

Broadband notch filter design for millimeter-wave plasma diagnostics  

Science Conference Proceedings (OSTI)

Notch filters are integrated in plasma diagnostic systems to protect millimeter-wave receivers from intensive stray radiation. Here we present a design of a notch filter with a center frequency of 140 GHz, a rejection bandwidth of {approx}900 MHz, and a typical insertion loss below 2 dB in the passband of {+-}9 GHz. The design is based on a fundamental rectangular waveguide with eight cylindrical cavities coupled by T-junction apertures formed as thin slits. Parameters that affect the notch performance such as physical lengths and conductor materials are discussed. The excited resonance mode in the cylindrical cavities is the fundamental TE{sub 11}. The performance of the constructed filter is measured using a vector network analyzer monitoring a total bandwidth of 30 GHz. We compare the measurements with numerical simulations.

Furtula, V.; Michelsen, P. K.; Leipold, F.; Salewski, M.; Korsholm, S. B.; Meo, F.; Nielsen, S. K.; Stejner, M.; Moseev, D. [Association Euratom-Risoe National Laboratory for Sustainable Energy, Technical University of Denmark, DK-4000 Roskilde (Denmark); Johansen, T. [DTU Elektro, Technical University of Denmark, DK-2800 Lyngby (Denmark)

2010-10-15T23:59:59.000Z

406

Inferring Surface Solar Absorption from Broadband Satellite Measurements  

Science Conference Proceedings (OSTI)

An atmospheric solar radiation model, in conjunction with a variety of surface albedo models, has been employed to address several issues related to inferring the surface solar radiation budget from satellite measurements. With reference to ...

Robert D. Cess; Inna L. Vulis

1989-09-01T23:59:59.000Z

407

Broadband high resolution X-ray spectral analyzer  

DOE Patents (OSTI)

A broad bandwidth high resolution x-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces x-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available x-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for x-ray microanalysis or in research applications such as laboratory and astrophysical x-ray and particle spectroscopy.

Silver, Eric H. (Berkeley, CA); Legros, Mark (Berkeley, CA); Madden, Norm W. (Livermore, CA); Goulding, Fred (Lafayette, CA); Landis, Don (Pinole, CA)

1998-01-01T23:59:59.000Z

408

Broadband high resolution X-ray spectral analyzer  

DOE Patents (OSTI)

A broad bandwidth high resolution X-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces X-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available X-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for X-ray microanalysis or in research applications such as laboratory and astrophysical X-ray and particle spectroscopy. 6 figs.

Silver, E.H.; Legros, M.; Madden, N.W.; Goulding, F.; Landis, D.

1998-07-07T23:59:59.000Z

409

Broadband optical delay with large dynamic range using atomic dispersion  

E-Print Network (OSTI)

We report on a tunable all-optical delay line for pulses with optical frequency within the Rb $D_2$ absorption line. Pulses of 10 ns duration are delayed in a 10 cm hot vapour cell by up to 40 ns where the transmission reduces to approximately 10%. Using an optical frequency between absorption components from different isotopes allows the delay to be increased or decreased by optical pumping with a second laser, producing rapid tuning over a range more than 40% of the initial delay. We investigate the frequency and intensity ranges in which this delay line can be realised. Our observations are in good agreement with a numerical model of the system.

Vanner, M R; Sidorov, A I; Hannaford, P; Akulshin, A M

2007-01-01T23:59:59.000Z

410

High Efficiency Broadband Envelope-Tracking Power Amplifiers  

E-Print Network (OSTI)

Bachelor of Science, Electrical and Computer Engineering,San Diego, CA Master of Science. Electrical Engineering (

Yan, Jonmei Johana

411

Re: DOE Request for Information - Implementing the National Broadband...  

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

Department of Energy ("DOE" or "Department") for information on state efforts to enact Smart Grid privacy and data collection policies; utility practices and policies regarding...

412

Re: DOE Request for Information - Implementing the National Broadband...  

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

Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy (Federal RegisterVol.75, No.90Tuesday May 11, 2010). Re: DOE Request...

413

Re: DOE Request for Information - Implementing the National Broadband...  

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

Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy, which was published at 75 Federal Register 26206 on May 11, 2010. Re:...

414

Microsoft Word - long-cn.doc  

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

Next Generation Flux Analysis: Adding Clear-Sky LW Next Generation Flux Analysis: Adding Clear-Sky LW and LW Cloud Effects, Cloud Optical Depths, and Improved Sky Cover Estimates C. N. Long Pacific Northwest National Laboratory Richland, Washington Introduction The original Shortwave Flux Analysis (SWFA), based on Long and Ackerman (2000) and Long et al. (1999), deals only with daylight shortwave (SW) data. The SWFA algorithm produces continuous estimates of clear-sky downwelling diffuse, direct, and total SW; estimated fractional sky cover; and identification of when the sky was cloudless. This algorithm package is being produced as an Atmospheric Radiation Measurement (ARM) value-added product (VAP), as described in Long and Gaustad (2001). Subsequent efforts for analysis of surface broadband radiation and meteorological measurements now

415

Microsoft Word - shi_y.doc  

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

Measurement Data Quality Assessment Measurement Data Quality Assessment at the Atmospheric Radiation Measurement Program Tropical Western Pacific and North Slope of Alaska Sites Y. Shi and C.N. Long Pacific Northwest National Laboratory Richland, Washington Introduction The QCRad VAP is being developed to assess the data quality for surface broadband radiation data collected at all Atmospheric Radiation Measurement (ARM) Program facilities, and provide continuity where possible for missing or "bad" shortwave (SW) irradiance from collocated instruments. In previous ARM Science Team Meetings we have presented analyses of data quality assessment for the Southern Gret Plains (SGP) Extended Facilities (Shi and Long 2003), and the techniques and methods used to derive the best estimate of total downwelling shortwave radiation (Shi and Long 2004). We

416

ARM - Campaign Instrument - pyran-delta-spn1  

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

delta-spn1 delta-spn1 Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Delta-T Sunshine Pyranometer- SPN1 (PYRAN-DELTA-SPN1) Instrument Categories Radiometric Campaigns Diffuse Shortwave IOP [ Download Data ] Southern Great Plains, 2001.09.24 - 2001.10.22 Surface Observation in Support of in-situ Observations within the Arctic Boundary Layer [ Download Data ] North Slope Alaska, 2008.04.01 - 2008.05.31 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Shortwave broadband total downwelling irradiance

417

1  

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

Evaluation of Cloud Cover, Cloud Effect, and Surface Evaluation of Cloud Cover, Cloud Effect, and Surface Radiation Budgets at the SGP and TWP ARM Sites K. L. Gaustad and C. N. Long Pacific Northwest National Laboratory Richland, Washington Introduction The U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Program has established networks of broadband shortwave (SW) radiometers at each of its field research sites. The shortwave flux analysis value-added product (SWFuxAnal VAP) applies a clear-sky detection and fitting technique to data collected from these sensors to identify clear-sky conditions, produce a continuous estimate of clear-sky SW irradiance, and assess the effect of cloudiness on downwelling SW measurements. The clear-sky detection algorithm has been expanded to allow its use in not only

418

Thunderhead Radiation Measurements and Radiative Flux Analysis in Support of STORMVEX  

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

Thunderhead Radiation Thunderhead Radiation Measurements and Radiative Flux Analysis in Support of STORMVEX Chuck Long Jay Mace Intent * Provide downwelling broadband radiation measurements at Thunderhead * Physically small footprint portable system * Designed to provide inputs necessary for Radiative Flux Analysis Basic RFA System COPS Hornisgrinde Deployment 1200m elevation System Components * Eppley ventilated PSP * Eppley ventilated PIR * Delta-T SPN-1 * Vaisala HMP-50 T/RH probe * Campbell CR23X datalogger SPN-1 Radiometer * Uses 7 thermopile detectors and a patented shading pattern * Measures Total and Diffuse SW with no moving parts * Includes internal heaters Relative accuracy StDev = 13.6 Winter Mountain Deployment Frost/Snow Mitigation * NSA Heated Ventilator Evaluation IOP - Testing various configurations and

419

Remote Sensing of Aerosol Properties during CARES  

SciTech Connect

One month of MFRSR data collected at two sites in the central California (USA) region during the CARES campaign are processed and the MFRSR-derived AODs at 500 nm wavelength are compared with available AODs provided by AERONET measurements. We find that the MFRSR and AERONET AODs are small ({approx}0.05) and comparable. A reasonable quantitative agreement between column aerosol size distributions (up to 2 um) from the MFRSR and AERONET retrievals is illustrated as well. Analysis of the retrieved (MFRSR and AERONET) and in situ measured aerosol size distributions suggests that the contribution of the coarse mode to aerosol optical properties is substantial for several days. The results of a radiative closure experiment performed for the two sites and one-month period show a favorable agreement between the calculated and measured broadband downwelling irradiances (bias does not exceed about 3 Wm-2), and thus imply that the MFRSR-derived aerosol optical properties are reasonable.

Kassianov, Evgueni I.; Barnard, James C.; Pekour, Mikhail S.; Flynn, Connor J.; Ferrare, R.; Hostetler, Chris A.; Hair, John; Jobson, Bertram Thomas

2011-10-01T23:59:59.000Z

420

Geophysical Fluid Dynamics Laboratory Portal | Data.gov  

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

Geophysical Fluid Dynamics Laboratory Portal Geophysical Fluid Dynamics Laboratory Portal Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Geophysical Fluid Dynamics Laboratory Portal Dataset Summary Description Output and documentation from a set of multi-century experiments performed using NOAA/GFDL's climate models. Users can download files, display data file attributes, and graphically display the data. Data sets include those from CM2.X experiments associated with the Intergovernmental Panel on Climate Change Assessment Report (IPCC) and the US Climate Change Science Program (US CCSP). Tags {climate,IPCC,CCSP,pressure,SLP," sea ice","upper-level winds",ozone,"meridional winds","zonal winds",u-wind,v-wind," carbon dioxide"," volcanic",aerosol,grids,"soil moisture"," IPCC",flux,"radiation flux",thickness,radiation,emissivity,longwave,sensible,"latent heat",downwelling,upwelling,temperature,convective,runoff,"water vapor",humidity,cloudiness,transport,"geopotential height",assimilation,salinity,evaporation,freshwater}

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

New Approach to Calculation of Atmospheric Model Physics: Accurate and Fast Neural Network Emulation of Longwave Radiation in a Climate Model  

Science Conference Proceedings (OSTI)

A new approach based on a synergetic combination of statistical/machine learning and deterministic modeling within atmospheric models is presented. The approach uses neural networks as a statistical or machine learning technique for an accurate ...

Vladimir M. Krasnopolsky; Michael S. Fox-Rabinovitz; Dmitry V. Chalikov

2005-05-01T23:59:59.000Z

422

Validation of the CERES/TRMM ERBE-Like Monthly Mean Clear-Sky Longwave Dataset and the Effects of the 1998 ENSO Event  

Science Conference Proceedings (OSTI)

The Clouds and the Earth’s Radiant Energy System (CERES) is a new National Aeronautics and Space Administration space-borne measurement project for monitoring the radiation environment of the earth–atmosphere system. The first CERES instrument ...

Takmeng Wong; David F. Young; Martial Haeffelin; Stephanie Weckmann

2000-12-01T23:59:59.000Z

423

Using a Blackbody to Calculate Net Longwave Responsivity of Shortwave Solar Pyranometers to Correct for Their Thermal Offset Error during Outdoor Calibration Using the Component Sum Method  

Science Conference Proceedings (OSTI)

Thermopile pyranometers’ thermal offset has been recognized since the pyranometer’s inception. This offset is often overlooked or ignored because its magnitude is small compared to the overall solar signal at higher irradiance. With the demand of ...

I. Reda; J. Hickey; C. Long; D. Myers; T. Stoffel; S. Wilcox; J. J. Michalsky; E. G. Dutton; D. Nelson

2005-10-01T23:59:59.000Z

424

Procedure for Generating Data Quality Reports for SIRS Radiometric Measurements  

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

Procedure for Generating Data Quality Reports Procedure for Generating Data Quality Reports for SIRS Radiometric Measurements M. H. L. Anderberg, F. P. Rael, and T. L. Stoffell National Renewable Energy Laboratory Golden, Colorado Introduction The Atmospheric Radiation Measurement (ARM) Program needs high-quality broadband shortwave (SW) (solar) and longwave (LW) irradiance information for the development and validation of atmospheric circulation and climate models. To this end, the National Renewable Energy Laboratory (NREL) performs a quality assessment of the data from 22 Solar Infrared Stations (SIRS) in the Southern Great Plains (SGP). Data quality reports (DQRs) are instrumental in passing the resultant information to the scientific community. The value of these reports depends on clear and consistent

425

Section 117  

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

Validation of GOES-7 to a Radiation Budget for April and Validation of GOES-7 to a Radiation Budget for April and July 1994 ARM/IOP Using ScaRaB/Meteor-3/7 Data A. Trishchenko and Z. Li Canada Centre for Remote Sensing Ottawa, Ontario, Canada Abstract Data from the ScaRaB radiometer flown on board the Meteor- 3/7 satellite were employed for validating a TOA Earth radiation budget product generated from GOES-7 for the Atmospheric Radiation Measurement (ARM) Program. Com- parisons were made between coincident and collocated short- wave and long-wave radiative quantities derived from ScaRaB and GOES sensors over the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site in Oklahoma, U.S.A., during April and July 1994. Calibrations for both visible and infrared window channels appear to be adequate, but narrow- to broad-band conversion of short-wave measure-

426

ARM STM Plenary: CS Report  

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

8 8 ARM Science Team Meeting 2008 Warren Wiscombe ARM Chief Scientist Brookhaven National Lab Mar 2008 ARM Plenary 2 ARM Chief Scientist Team ARM Chief Scientist Team Ric Cederwall Andy Vogelmann Sharon Zuhoski Yangang Liu Pavlos Kollias Mar 2008 ARM Plenary 3 Submit your... Submit your... science highlights (www.arm.gov) poster PDFs (esp if you win CS Design Award) feedback in text boxes on ARM web pages Also... vote for People's Choice Poster talk to our Thu morning speakers Mar 2008 ARM Plenary 4 Mar 2008 ARM Plenary 5 Existing Existing * CLOWD (Clouds with Low Optical Depth) * BBHRP (BroadBand Heating Rate Profile) * Radar Focus Groups Focus Groups New New * Vertical Velocity for Climate Modelers * Longwave/Microwave * Surface Fluxes Mar 2008 ARM Plenary 6 ARM ARM ' ' s s two fundamental science questions

427

ARM - Datastreams - ruc20hybr  

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

hybr hybr Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : RUC20HYBR Rapid Update Cycle (RUC) model: daily hybrid analysis data, 20 km resolution Active Dates 2002.04.18 - 2012.05.01 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Rapid Update Cycle Model Data (RUC) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Convection cape Convection cape255 Convection cinhib Convection cinhib255 Latent heat flux fluxlatentsrf Longwave broadband net irradiance fluxlwnetsrf Sensible heat flux fluxsensiblesrf

428

ARM - Publications: Science Team Meeting Documents  

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

Cloud Radiative Forcing of the Arctic Surface: The Influence of Cloud Cloud Radiative Forcing of the Arctic Surface: The Influence of Cloud Properties, Surface Albedo, and Solar Zenith Angle Shupe, M.D. and Intrieri, J.M., NOAA - Environmental Technology Laboratory Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting An annual cycle of cloud and radiation measurements made as part of the Surface Heat Budget of the Arctic program are utilized to determine which properties of Arctic clouds control the surface radiation balance. Surface cloud radiative forcing (CF), defined as the difference between the all-sky net surface radiative flux and the clear sky net surface flux, was calculated from measurements of broadband fluxes and results from a clear sky model. Longwave cloud forcing (CFLW) is shown to be a function of cloud

429

Improved ARM-SGP TOA OLR Fluxes from GOES-8 IR Radiances Based on CERES Data  

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

ARM-SGP TOA OLR Fluxes from GOES-8 IR ARM-SGP TOA OLR Fluxes from GOES-8 IR Radiances Based on CERES Data D. R. Doelling and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction The radiation budget at the top of the atmosphere (TOA) is a quantity of fundamental importance to the Atmospheric Radiation Measurement (ARM) Program. Thus, it is necessary to measure the radiation budget components, broadband shortwave albedo and outgoing longwave radiation (OLR), as accurately as possible. Measurement of OLR over the ARM surface sites has only been possible since the advent of Clouds and the Earth's Radiant Energy System (CERES; Wielicki et al. 1998) in 1998. Prior to

430

ARM - Facility News Article  

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

May 15, 2008 [Data Announcements, Facility News] May 15, 2008 [Data Announcements, Facility News] Announcing the Release of the Radiative Flux Analysis PI Product Bookmark and Share Developed by Dr. Chuck Long, Radiative Flux Analysis PI Product data are now available from the ARM Climate Research Facility Archive. The current release includes data for all of the ARM fixed sites (except Darwin, which requires manual processing because of the monsoon season) plus data for the AMF deployments at Pt. Reyes and the COPS Black Forest site. Future releases will include data for Darwin, the COPS Hornisgrinde and Rhine Valley sites, and the AMF Niamey deployment. The Radiative Flux Analysis is a technique for using surface shortwave (SW) and longwave (LW) broadband radiation measurements for detecting periods of

431

Sensitivity of shortwave radiative flux density, forcing, and heating rates to the aerosol vertical profile  

SciTech Connect

The effect of the aerosol vertical distribution on the solar radiation profiles, for idealized and measured profiles of optical properties (extinction and single-scattering albedo (SSA)) during the May 2003 Atmospheric Radiation Measurement (ARM) Aerosol Intensive Observation Period (AIOP), has been investigated using the Rapid Radiative Transfer Model Shortwave (RRTM_SW) code. Calculated profiles of down-welling and up-welling solar fluxes during the AIOP have been compared with the data measured by up- and down-looking solar broadband radiometers aboard a profiling research aircraft. The measured profiles of aerosol extinction, SSA, and water vapor obtained from the same aircraft that carried the radiometers served as the inputs for the model calculations. It is noteworthy that for this study, the uplooking radiometers were mounted on a stabilized platform that kept the radiometers parallel with respect to the earth’s horizontal plane. The results indicate that the shape of the aerosol extinction profiles has very little impact on direct radiative forcings at the top of atmosphere and surface in a cloud-free sky. However, as long as the aerosol is not purely scattering, the shape of the extinction profiles is important for forcing profiles. Identical extinction profiles with different absorption profiles drastically influence the forcing and heating rate profiles. Using aircraft data from 19 AIOP profiles over the Southern Great Plains (SGP), we are able to achieve broadband down-welling solar flux closure within 0.8% (bias difference) or 1.8% (rms difference), well within the expected measurement uncertainty of 1 to 3%. The poorer agreement in up-welling flux (bias -3.7%, rms 10%) is attributed to the use of inaccurate surface albedo data. The sensitivity tests reveal the important role accurate, vertically resolved aerosol extinction data plays in tightening flux closure. This study also suggests that in the presence of a strongly absorbing substance, aircraft flux measurements from a stabilized platform have the potential to determine heating rate profiles. These measurement-based heating rate profiles provide useful data for heating rate closure studies and indirect estimates of single scattering albedo assumed in radiative transfer calculations.

Guan, Hong; Schmid, Beat; Bucholtz, Anthony; Bergstrom, Robert

2010-03-31T23:59:59.000Z

432

A neural network for real-time retrievals of PWV and LWP from Arctic millimeter-wave ground-based observations.  

SciTech Connect

This paper presents a new neural network (NN) algorithm for real-time retrievals of low amounts of precipitable water vapor (PWV) and integrated liquid water from millimeter-wave ground-based observations. Measurements are collected by the 183.3-GHz G-band vapor radiometer (GVR) operating at the Atmospheric Radiation Measurement (ARM) Program Climate Research Facility, Barrow, AK. The NN provides the means to explore the nonlinear regime of the measurements and investigate the physical boundaries of the operability of the instrument. A methodology to compute individual error bars associated with the NN output is developed, and a detailed error analysis of the network output is provided. Through the error analysis, it is possible to isolate several components contributing to the overall retrieval errors and to analyze the dependence of the errors on the inputs. The network outputs and associated errors are then compared with results from a physical retrieval and with the ARM two-channel microwave radiometer (MWR) statistical retrieval. When the NN is trained with a seasonal training data set, the retrievals of water vapor yield results that are comparable to those obtained from a traditional physical retrieval, with a retrieval error percentage of {approx}5% when the PWV is between 2 and 10 mm, but with the advantages that the NN algorithm does not require vertical profiles of temperature and humidity as input and is significantly faster computationally. Liquid water path (LWP) retrievals from the NN have a significantly improved clear-sky bias (mean of {approx}2.4 g/m{sup 2}) and a retrieval error varying from 1 to about 10 g/m{sup 2} when the PWV amount is between 1 and 10 mm. As an independent validation of the LWP retrieval, the longwave downwelling surface flux was computed and compared with observations. The comparison shows a significant improvement with respect to the MWR statistical retrievals, particularly for LWP amounts of less than 60 g/m{sup 2}.

Cadeddu, M. P.; Turner, D. D.; Liljegren, J. C.; Decision and Information Sciences; Univ. of Wisconsin at Madison

2009-07-01T23:59:59.000Z

433

Determining Surface Solar Absorption from Broadband Satellite Measurements for Clear Skies: Comparison with Surface Measurements  

Science Conference Proceedings (OSTI)

Two separate datasets both of which provide measurements of net downward shortwave radiation have been combined, so as to provide a means of critically examining methods for transferring satellite measurements to the surface. This is further ...

Robert D. Cess; Ellsworth G. Dutton; John J. Deluisi; Feng Jiang

1991-02-01T23:59:59.000Z

434

Broad-band chopper for a CW proton linac at Fermilab  

E-Print Network (OSTI)

Requirements and technical limitations to the bunch-by-bunch chopper for the Fermilab Project X are discussed.

Gianfelice-Wendt, E; Solyak, N; Nagaitsev, S; Sun, D

2012-01-01T23:59:59.000Z

435

Modeling and analysis of electrical power lines for broadband power line communications.  

E-Print Network (OSTI)

??This research seeks to expand the knowledge in the characteristics of power lines and to develop a channel model that can be used for designing… (more)

Meng, Han.

2008-01-01T23:59:59.000Z

436

Routing with end-to-end QoS guarantees in broadband networks  

Science Conference Proceedings (OSTI)

Keywords: QoS routing, constrained path optimization, hierarchical networks, rate-based schedulers, topology aggregation

Ariel Orda

1999-06-01T23:59:59.000Z

437

Broadband impedance calculations of the TAN vacuum chamber for the Large Hadron Collider (LHC)  

E-Print Network (OSTI)

CHAMBER FOR THE LARGE HADRON COLLIDER (LHC) ? D. Li § , G.chamber for the Large Hadron Collider (LHC). The TAN is the

Li, D.; Lambertson, G.; Turner, W.

2001-01-01T23:59:59.000Z

438

Estimation and tracking of rapidly time-varying broadband acoustic communication channels  

E-Print Network (OSTI)

This thesis develops methods for estimating wideband shallow-water acoustic communication channels. The very shallow water wideband channel has three distinct features: large dimension caused by extensive delay spread; ...

Li, Weichang, 1972-

2006-01-01T23:59:59.000Z

439

Flexible spectrum management for mobile broadband services: How does it vary across advanced and emerging markets?  

Science Conference Proceedings (OSTI)

Demand for wireless data and Internet services are expected to grow exponentially, both in advanced and emerging markets in the near future. While advanced countries have often used centralized planning and coordination methodology to forecast and allocate ... Keywords: Cognitive radios, Economies of scale, Inefficient spectrum allocation, Multi SIMs, Secondary spectrum market, Spectrum sharing, Spectrum trading, System dynamics

Varadharajan Sridhar; Thomas Casey; Heikki HäMmäInen

2013-03-01T23:59:59.000Z

440

UNIVERSITY OF CALIFORNIA, SAN DIEGO Multi-view, broadband, acoustic classification of marine animals  

E-Print Network (OSTI)

and comprise nearly 40% of the state's total oil production capacity (California Energy Commission 2003). More

Jaffe, Jules

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

PROGRESS TOWARD BROAD-BAND AMBIENT NOISE TOMOGRAPHY IN EURASIA Michael H. Ritzwoller1  

E-Print Network (OSTI)

of Nonproliferation Research and Development Office of Defense Nuclear Nonproliferation Contract No. DE-FC52-2005NA

Ritzwolle, Mike

442

Two-dimensional disorder for broadband, omnidirectional and polarization-insensitive absorption  

E-Print Network (OSTI)

The surface of thin-film solar cells can be tailored with photonic nanostructures to allow light trapping in the absorbing medium. This in turn increases the optical thickness of the film and thus enhances their absorption. Such a coherent light trapping is generally accomplished with deterministic photonic architectures. Here, we experimentally explore the use of a different nanostructure, a disordered one, for this purpose. We show that the disorder-induced modes in the film allow improvements in the absorption over a broad range of frequencies and impinging angles.

Burresi, Matteo; Vynck, Kevin; Prasciolu, Mauro; Tormen, Massimo; Wiersma, Diederik S

2012-01-01T23:59:59.000Z

443

Calibration of erythemally weighted broadband instruments: A comparison between PMOD/WRC and MSL  

Science Conference Proceedings (OSTI)

A Yankee Environmental Systems (YES) UVB-1 ultraviolet pyranometer, designed to measure erythemally weighted total solar irradiance, was calibrated by the Measurement Standards Laboratory (MSL) in Lower Hutt, New Zealand during August 2010. The calibration was then repeated during July and August 2011 by the Physikalisch-Meteorologisches Obervatorium Davos, World Radiation Center (PMOD/WRC) located in Davos, Switzerland. Calibration results show that measurements of the relative spectral and angular response functions at the two institutes are in excellent agreement, thus providing a good degree of confidence in these measurement facilities. However, measurements to convert the relative spectral response into an absolute calibration disagree significantly depending on whether an FEL lamp or solar spectra are used to perform this scaling. This is the first serious comparison of these scaling methods to formally explore the potential systematic errors which could explain the discrepancy.

Swift, Neil; Nield, Kathryn; Hamlin, John [Measurement Standards Laboratory of New Zealand, Industrial Research Ltd, Lower Hutt (New Zealand); Huelsen, Gregor; Groebner, Julian [Physikalisch-Meteorologisches Observatorium Davos, World Radiation Centre, Davos Dorf (Switzerland)

2013-05-10T23:59:59.000Z

444

Overmodulation in subcarrier multiplexed video FM broad-band optical networks  

Science Conference Proceedings (OSTI)

The probability of an SCM (subcarrier multiplexed) signal falling outside the linear region of a laser diode is calculated in order to determine the overmodulation that may be practically employed for multichannel video distribution in single-octave ...

F. V.C. Mendis; B. T. Tan

2006-09-01T23:59:59.000Z

445

Calculation of Potential Broadband Biologically Active and Thermal Solar Radiation above Vegetation Canopies  

Science Conference Proceedings (OSTI)

A spectral model was assembled and used to compute the potential solar irradiance in five broad bands, that is, ultraviolet-B (280?320 nm in wavelength), ultraviolet-A (320?400 nm), photosynthetically active (400?700 nm), near infrared (700?1500 ...

Xiusheng Yang; David R. Miller

1995-04-01T23:59:59.000Z

446

A Distributed Video Retrieval System Utilising Broadband Networked PC_s for Educational Applications  

Science Conference Proceedings (OSTI)

Conventional educational material is ever more complemented with computer-based multimedia material. In order to make this material available to teachers and students in a structured manner, we developed a multimedia database and accompanying tools for ...

Frank Van Reeth; Chris Raymaekers; Peter Trekels; Stefan Verkoyen; Eddy Flerackers

1998-10-01T23:59:59.000Z

447

Interdigitated Antennas for Broadband Terahertz Generation Mitch Connolly,1,2  

E-Print Network (OSTI)

Japan Program, Rice University, Houston, Texas, U.S.A. 2 Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology, Okinawa, Japan The terahertz (THz) feild has become a hot topic for many

448

A BROADBAND STUDY OF THE EMISSION FROM THE COMPOSITE SUPERNOVA REMNANT MSH 11-62  

SciTech Connect

MSH 11-62 (G291.0-0.1) is a composite supernova remnant for which radio and X-ray observations have identified the remnant shell as well as its central pulsar wind nebula. The observations suggest a relatively young system expanding into a low-density region. Here, we present a study of MSH 11-62 using observations with the Chandra, XMM -Newton, and Fermi observatories, along with radio observations from the Australia Telescope Compact Array. We identify a compact X-ray source that appears to be the putative pulsar that powers the nebula, and show that the X-ray spectrum of the nebula bears the signature of synchrotron losses as particles diffuse into the outer nebula. Using data from the Fermi Large Area Telescope, we identify {gamma}-ray emission originating from MSH 11-62. With density constraints from the new X-ray measurements of the remnant, we model the evolution of the composite system in order to constrain the properties of the underlying pulsar and the origin of the {gamma}-ray emission.

Slane, Patrick; Castro, Daniel; Foight, Dillon, E-mail: slane@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138-1516 (United States); and others

2012-04-20T23:59:59.000Z

449

Promoting multicultural education in the primary classroom: broadband videoconferencing facilities and digital video  

Science Conference Proceedings (OSTI)

The aim of this study was to explore the impact of interaction (through gathering local field data and engaging in remote reciprocal presentations) on aspects of multicultural awareness. Sixty-six 11-12-year-old Scottish primary school pupils collected ... Keywords: computer-mediated communication, cooperative/collaborative learning, cross-cultural projects, elementary education, improving classroom teaching, multicultural education

Allen Thurston

2004-08-01T23:59:59.000Z

450

Broadband Extinction Method to Determine Aerosol Optical Depth from Accumulated Direct Solar Radiation  

Science Conference Proceedings (OSTI)

There are two important problems in the aerosol optical depth (AOD) retrievals from hourly/daily/monthly accumulated pyrheliometer data, that is, how to select a suitable cosine of the solar zenith angle (?0) and how to eliminate or minimize ...

Jinhuan Qiu

2003-11-01T23:59:59.000Z

451

Broad-band chopper for a CW proton linac at Fermilab  

SciTech Connect

The future Fermilab program in the high energy physics is based on a new facility called the Project X [1] to be built in the following decade. It is based on a 3 MW CW linear accelerator delivering the 3 GeV 1 mA H{sup -} beam to a few experiments simultaneously. Small fraction of this beam will be redirected for further acceleration to 8 GeV to be injected to the Recycler/Main Injector for a usage in a neutrino program and other synchrotron based high energy experiments. Requirements and technical limitations to the bunch-by-bunch chopper for the Fermilab Project X are discussed.

Gianfelice-Wendt, E.; Lebedev, V.A.; Solyak, N.; Nagaitsev, S.; Sun, D.; /Fermilab

2011-03-01T23:59:59.000Z

452

Planck-Weighted Transmittance and Correction of Solar Reflection for Broadband Infrared Satellite Channels  

Science Conference Proceedings (OSTI)

The line-by-line radiative transfer model (LBLRTM) is used to derive the channel transmittances. The channel transmittance from a level to the top of the atmosphere can be approximated by three methods: Planck-weighted transmittance 1 (PW1), ...

Yong Chen; Fuzhong Weng; Yong Han; Quanhua Liu

2012-03-01T23:59:59.000Z

453

Broadband phase-diverse phase retrieval in systems with chromatic aberration.  

SciTech Connect

We describe a phase retrieval method capable of recovering different phase distributions for each wavelength forming a polychromatic intensity distribution. Simulation results show reconstruction errors of a few thousandths of a wave RMS.

Schrader, Karl; Kemme, Shanalyn A.; Shields, Eric A.; Brady, Gregory R.

2010-09-01T23:59:59.000Z

454

The business of broadband and the public interest : media policy for the network society  

E-Print Network (OSTI)

Media policy in the United States has, since its inception, been governed by the principle that infrastructure providers should serve "the public interest." The Federal Communications Commission has traditionally been ...

Schultze, Stephen James

2008-01-01T23:59:59.000Z

455

Nitride Based Insulated Gate Field Effect Transistors Broadband Center, ECSE and Physics, Computer, and Systems  

E-Print Network (OSTI)

for commercialization of GaN based electronics. [1 ] M. Asif Khan, J. N. Kuznia, A. R. Bhattarai, and D. P. Olson, Ga. 281, p.769 (1993) [2 ] M. Asif Khan, Michael S. Shur, Q. C. Chen, and J. N. Kuznia, Current, Bristol, 1995), p.459 [4 ] M. Asif Khan, X. Hu, G. Simin, A. Lunev, and J. Yang, R. Gaska and M. S. Shur

Lü, James Jian-Qiang

456

Broadband circulators based on directional coupling of one-way waveguides  

E-Print Network (OSTI)

Resonator-based optical circulators are fundamentally bandwidth-limited by their quality factors. We propose a new type of circulator based on directional coupling between one-way photonic chiral edge states and conventional ...

Qiu, Wenjun

457

Design and Analysis of Green Mission-Critical Fiber-Wireless Broadband Access Networks.  

E-Print Network (OSTI)

??In recent years, the ever-increasing environmental friendliness concern has made energy efficiency in telecom networks as an important theme in their operations. Meanwhile, mission-critical (MC)… (more)

Dhaini, Ahmad R.

2011-01-01T23:59:59.000Z

458

Silicon nanowire phototransistor : designing, fabricating and characterizing a high responsibility, broadband photodetector  

E-Print Network (OSTI)

Properties of Indium Oxide Nanowires," Applied Physics a-region using indium tin oxide (ITO). The windows for topgallium, tin, indium, cadmium, and vanadium oxides. Group IV

Zhang, Arthur Yasheng

2010-01-01T23:59:59.000Z

459

Passive geoacoustic inversion with a single hydrophone using broadband ship noise  

E-Print Network (OSTI)

on a single distant hydrophone. The spectrogram of the measurements exhibits striations which depend propagating between a known source and a distant receiving system. Two main types of methods have been explore the frequency diversity. For emissions below a few hundred Hertz, some of the existing methods

460

Fast Magnetic Resonance Imaging via Adaptive Broadband Encoding of the MR Signal Content  

E-Print Network (OSTI)

signal is radiated from the sample and decays over time both via the return of the sample's magnetization decays after sample excitation. Relaxation times of the order of 1sec in human tissue make the process studies where a continu- ous series of images is required, for example in contrast bolus tracking

Edelman, Alan

Note: This page contains sample records for the topic "longwave broadband downwelling" 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

Effects of Aerosol and Horizontal Inhomogeneity on the Broadband Albedo of Marine Stratus: Numerical Simulations  

Science Conference Proceedings (OSTI)

Recent estimates of the effect of increasing amounts of anthropogenic sulfate aerosol on the radiative forcing of the atmosphere have indicated that its impact may be comparable in magnitude to the effect from increases in CO2. Much of this ...

D. P. Duda; G. L. Stephens; B. Stevens; W. R. Cotton

1996-12-01T23:59:59.000Z

462

QUASI-PERIODIC OSCILLATIONS AND BROADBAND VARIABILITY IN SHORT MAGNETAR BURSTS  

Science Conference Proceedings (OSTI)

The discovery of quasi-periodic oscillations (QPOs) in magnetar giant flares has opened up prospects for neutron star asteroseismology. However, with only three giant flares ever recorded, and only two with data of sufficient quality to search for QPOs, such analysis is seriously data limited. We set out a procedure for doing QPO searches in the far more numerous, short, less energetic magnetar bursts. The short, transient nature of these bursts requires the implementation of sophisticated statistical techniques to make reliable inferences. Using Bayesian statistics, we model the periodogram as a combination of red noise at low frequencies and white noise at high frequencies, which we show is a conservative approach to the problem. We use empirical models to make inferences about the potential signature of periodic and QPOs at these frequencies. We compare our method with previously used techniques and find that although it is on the whole more conservative, it is also more reliable in ruling out false positives. We illustrate our Bayesian method by applying it to a sample of 27 bursts from the magnetar SGR J0501+4516 observed by the Fermi Gamma-ray Burst Monitor, and we find no evidence for the presence of QPOs in any of the bursts in the unbinned spectra, but do find a candidate detection in the binned spectra of one burst. However, whether this signal is due to a genuine quasi-periodic process, or can be attributed to unmodeled effects in the noise is at this point a matter of interpretation.

Huppenkothen, Daniela; Watts, Anna L.; Uttley, Phil; Van der Horst, Alexander J.; Van der Klis, Michiel [Astronomical Institute ''Anton Pannekoek'', University of Amsterdam, Postbus 94249, 1090-GE Amsterdam (Netherlands); Kouveliotou, Chryssa [Office of Science and Technology, ZP12, NASA Marshall Space Flight Center, Huntsville, AL 35812 (United States); Goegues, Ersin [Sabanc Latin-Small-Letter-Dotless-I University, Orhanl Latin-Small-Letter-Dotless-I -Tuzla, Istanbul 34956 (Turkey); Granot, Jonathan [The Open University of Israel, 1 University Road, P.O. Box 808, Ra'anana 43537 (Israel); Vaughan, Simon [X-Ray and Observational Astronomy Group, University of Leicester, Leicester LE1 7RH (United Kingdom); Finger, Mark H., E-mail: D.Huppenkothen@uva.nl [Universities Space Research Association, Huntsville, AL 35805 (United States)

2013-05-01T23:59:59.000Z

463

Using a Broadband ADCP in a Tidal Channel. Part I: Mean Flow and Shear  

Science Conference Proceedings (OSTI)

This paper discusses the principles of measuring the mean velocity and its vertical shear in a turbulent flow using an acoustic Doppler current profiler (ADCP), and presents an analysis of data gathered in a tidal channel. The assumption of ...

Youyu Lu; Rolf G. Lueck

1999-11-01T23:59:59.000Z

464

A scrape-through piezoelectric MEMS energy harvester with frequency broadband and up-conversion behaviors  

Science Conference Proceedings (OSTI)

We propose a MEMS piezoelectric energy harvester with a wide operating frequency range by incorporating a high-frequency piezoelectric cantilever and a metal base as the top and bottom stoppers with a low-frequency piezoelectric cantilever. Frequency ...

Huicong Liu; Cho Jui Tay; Chenggen Quan; Takeshi Kobayashi; Chengkuo Lee

2011-12-01T23:59:59.000Z

465

Benefits of Inter-Flow Bandwidth Sharing in Broadband Wireless Infrastructure Networks  

E-Print Network (OSTI)

Ahuja, Abishek Gopalan, and Srinivasan Ramasubramanian Department of Electrical and Computer Engineering bandwidth usage, the nodes in such networks employ directional transmissions over multiple orthogonal. The interference at node z due to the transmission from x to y results in signal- to-noise ratio that is lower than

Ramasubramanian, Srinivasan

466

Microwave tomography for breast cancer detection on Cell broadband engine processors  

Science Conference Proceedings (OSTI)

Microwave tomography (MT) is a safe screening modality that can be used for breast cancer detection. The technique uses the dielectric property contrasts between different breast tissues at microwave frequencies to determine the existence of abnormalities. ... Keywords: Breast cancer detection, Cell BE processor, Finite-difference time-domain (FDTD), Microwave tomography (MT)

Meilian Xu; Parimala Thulasiraman; Sima Noghanian

2012-09-01T23:59:59.000Z

467

Broadband Dieletric Properties of Impregnated Transformer Paper Insulation at Various Moisture Contents.  

E-Print Network (OSTI)

?? The actual life of a transformer is determined by ageing of the cellulosic insulation such as transformer paper. The presence of moisture in the… (more)

Cheng, Jialu

2011-01-01T23:59:59.000Z

468

Robust Estimations of Current Velocities with Four-Beam Broadband ADCPs  

Science Conference Proceedings (OSTI)

An extended explanation of the hypothesis and equations traditionally used to transform between four-beam ADCP radial beam velocities and current velocity components is presented. This explanation includes a dissertation about the meaning of the ...

M. Gilcoto; Emlyn Jones; Luis Fariña-Busto

2009-12-01T23:59:59.000Z

469

Two-dimensional stimulated resonance Raman spectroscopy of molecules with broadband x-ray pulses  

Science Conference Proceedings (OSTI)

Expressions for the two-dimensional stimulated x-ray Raman spectroscopy (2D-SXRS) signal obtained using attosecond x-ray pulses are derived. The 1D- and 2D-SXRS signals are calculated for trans-N-methyl acetamide (NMA) with broad bandwidth (181 as, 14.2 eV FWHM) pulses tuned to the oxygen and nitrogen K-edges. Crosspeaks in 2D signals reveal electronic Franck-Condon overlaps between valence orbitals and relaxed orbitals in the presence of the core-hole.

Biggs, Jason D.; Zhang Yu; Healion, Daniel; Mukamel, Shaul [Department of Chemistry, University of California, Irvine, California 92697-2025 (United States)

2012-05-07T23:59:59.000Z

470

Two-Dimensional Stimulated Resonance Raman Spectroscopy of Molecules with Broadband X-ray Pulses  

E-Print Network (OSTI)

Expressions for the two-dimensional Stimulated x-ray Raman Spectroscopy (2D-SXRS) signal obtained using attosecond x-ray pulses are derived. The 1D- and 2D-SXRS signals are calculated for trans-N-methyl acetamide (NMA) with broad bandwidth (FWHM ~14.2eV, 181 as) pulses tuned to the oxygen and nitrogen K-edges. Crosspeaks in 2D signals reveal electronic Franck-Condon overlaps between valence orbitals and relaxed orbitals in the presence of the core hole.

Jason D. Biggs; Yu Zhang; Daniel Healion; Shaul Mukamel

2012-04-26T23:59:59.000Z

471

A BOLOMETRIC TECHNIQUE FOR BROADBAND MEASUREMENT OF SURFACE RESISTANCE AND APPLICATION TO SINGLE  

E-Print Network (OSTI)

as an ohmic heater and a UBC made temperature controller (model 85-003) permits bath regulation stable to less by a Drude model over the majority of the frequency range. Variations between measurements have been observed Absorption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4 Two Fluid Model Interpretation

British Columbia, University of

472

LETTER doi:10.1038/nature10067 A graphene-based broadband optical modulator  

E-Print Network (OSTI)

of graphene is determined by the position of the Fermi level. By applying a drive voltage between the graphene/2. In reality, this transition was broadened owing to defects in the graphene, and shifted to higher voltage to a high-speed photodetector. Shown in Fig. 3 are the VD-dependent r.f. responses of the graphene modulator

Zhang, Xiang

473

Spatial approaches to broadband jamming in heterogeneous mobile networks: a game-theoretic approach  

Science Conference Proceedings (OSTI)

In this paper, we address the problem of a mobile intruder jamming the communication network in a vehicular formation. In order to understand the spatial aspect of the jamming problem, we consider a jamming model that takes into account the relative ... Keywords: AGVs, Jamming, Multi-player games, Nash equilibrium, Pursuit-evasion, UAVs

Sourabh Bhattacharya; Tamer Ba?ar

2011-11-01T23:59:59.000Z

474

Comparison and Uncertainty of Aerosol Optical Depth Estimates Derived from Spectral and Broadband Measurements  

Science Conference Proceedings (OSTI)

An experimental comparison of spectral aerosol optical depth ?a,? derived from measurements by two spectral radiometers [a LI-COR, Inc., LI-1800 spectroradiometer and a Centre Suisse d'Electronique et de Microtechnique (CSEM) SPM2000 sun ...

Thomas Carlund; Tomas Landelius; Weine Josefsson

2003-11-01T23:59:59.000Z

475

A Method for the Estimate of Broadband Directional Surface Albedo from a Geostationary Satellite  

Science Conference Proceedings (OSTI)

Surface albedo can be inferred from geostationary satellite measurements as long as the effects due to the atmosphere, the spectral response of the sensor, and the angular anisotropy of the reflected field are corrected. In this paper, we ...

B. Pinty; D. Ramond

1987-12-01T23:59:59.000Z

476

Fiber-wireless Sensor Broadband Access Network Integration for the Smart Grid .  

E-Print Network (OSTI)

??During the last century, the significant increase in electricity demand, and its consequences, has appeared as a serious concern for the utility companies, but no… (more)

Zaker, Nima

2013-01-01T23:59:59.000Z

477

External Needs Assessmet Process  

Science Conference Proceedings (OSTI)

... Broadband communications Broadband communications ? Advanced robotics ? Wind energy ? Electronic materials ? Manufacturing ...

2012-08-27T23:59:59.000Z

478

ARM - Datastreams - usdauvmfrsr  

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

Datastreamsusdauvmfrsr Datastreamsusdauvmfrsr Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : USDAUVMFRSR UV MFRSR data from USDA Active Dates 1999.02.17 - 2014.01.07 Measurement Categories Radiometric Originating Instrument US Department of Agriculture (USDA) Radiation Monitoring Data (USDARAD) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Shortwave narrowband diffuse downwelling irradiance difhorrad300 Shortwave narrowband diffuse downwelling irradiance difhorrad305 Shortwave narrowband diffuse downwelling irradiance difhorrad311 Shortwave narrowband diffuse downwelling irradiance

479

ARM - Datastreams - usdarad  

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

Datastreamsusdarad Datastreamsusdarad Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : USDARAD Visible MFRSR data from USDA Active Dates 1999.02.17 - 2014.01.07 Measurement Categories Radiometric Originating Instrument US Department of Agriculture (USDA) Radiation Monitoring Data (USDARAD) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Shortwave narrowband diffuse downwelling irradiance difhorizrad415 Shortwave narrowband diffuse downwelling irradiance difhorizrad500 Shortwave narrowband diffuse downwelling irradiance difhorizrad610 Shortwave narrowband diffuse downwelling irradiance

480

Research Highlight  

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

downwelling solar radiation, which is the direct energy from the sun plus the diffuse energy from scattered sunlight, over an 18-month period. Note that the conventional numerical...

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


481

Liquid Metal Heat Exchanger for Geologic Deposits - Energy ...  

Researchers at ORNL developed a down-well heating apparatus that efficiently heats subterranean geological deposits, such as oil shale, to extract ...

482

On the Performance of Pyrgeometers with Silicon Domes  

Science Conference Proceedings (OSTI)

Net radiation and the individual components of incoming and outgoing solar and longwave radiation were measured over alfalfa (Medicago sativa. L.). Solar radiation was measured with precision spectral pyranometers and longwave radiation with ...

A. Weiss

1981-08-01T23:59:59.000Z

483

Testing Climate Models Using Thermal Infrared Spectra  

Science Conference Proceedings (OSTI)

An approach to test climate models with observations is presented. In this approach, it is possible to directly observe the longwave feedbacks of the climate system in time series of annual average outgoing longwave spectra. Tropospheric ...

Stephen Leroy; James Anderson; John Dykema; Richard Goody

2008-05-01T23:59:59.000Z

484

W.-C. Wang, X.-Z. Liang, M. P. Dudek, M. Ding, L. Zhu, J. Everette...  

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

and surface models for soil and snowice. Figure 1 shows the comparison of longwave and solar radiation for clear and cloudy sky. Note that the cases for longwave radiation are...

485

Deconvolution of Wide Field-of-View Radiometer Measurements of Earth-Emitted Radiation Part II: Analysis of First Year of Nimbus 6 ERB Data  

Science Conference Proceedings (OSTI)

One year of longwave radiation data from July 1975 through June 1976 from the Nimbus 6 satellite Earth Radiation Budget (ERB) experiment is analyzed by representing the longwave radiation field by a spherical harmonic expansion. The data are from ...

T. Dale Bess; Richard N. Green; G. Louis Smith

1981-03-01T23:59:59.000Z

486

Heat Balance in the Nocturnal Boundary Layer during CASES-99  

Science Conference Proceedings (OSTI)

A unique set of nocturnal longwave radiative and sensible heat flux divergences was obtained during the 1999 Cooperative Atmosphere–Surface Exchange Study (CASES-99). These divergences are based on upward and downward longwave radiation ...

Jielun Sun; Sean P. Burns; Anthony C. Delany; Steven P. Oncley; Thomas W. Horst; Donald H. Lenschow

2003-11-01T23:59:59.000Z

487

Volume 1of 3 Removal Action Options Analysis  

E-Print Network (OSTI)

water that contains complex frontal features and upwelling/downwelling cells. The zonal temperature, sea many questions remain regarding the paleoceanographic and paleoclimatic history of this remote region and contains complex fronts and upwelling/downwelling cells. In the South Atlantic, the ACC has a strongly

488

Assessing regional scale predictions of aerosols, marine stratocumulus, and their interactions during VOCALS-REx using WRF-Chem  

Science Conference Proceedings (OSTI)

This study assesses the ability of the recent chemistry version (v3.3) of the Weather Research and Forecasting (WRF-Chem) model to simulate boundary layer structure, aerosols, stratocumulus clouds, and energy fluxes over the Southeast Pacific Ocean. Measurements from the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) and satellite retrievals (i.e., products from the MODerate resolution Imaging Spectroradiometer (MODIS), Clouds and Earth's Radiant Energy System (CERES), and GOES-10) are used for this assessment. The Morrison double-moment microphysics scheme is newly coupled with interactive aerosols in the model. The 31-day (15 October-16 November 2008) WRF-Chem simulation with aerosol-cloud interactions (AERO hereafter) is also compared to a simulation (MET hereafter) with fixed cloud droplet number concentrations in the microphysics scheme and simplified cloud and aerosol treatments in the radiation scheme. The well-simulated aerosol quantities (aerosol number, mass composition and optical properties), and the inclusion of full aerosol-cloud couplings lead to significant improvements in many features of the simulated stratocumulus clouds: cloud optical properties and microphysical properties such as cloud top effective radius, cloud water path, and cloud optical thickness. In addition to accounting for the aerosol direct and semi-direct effects, these improvements feed back to the simulation of boundary-layer characteristics and energy budgets. Particularly, inclusion of interactive aerosols in AERO strengthens the temperature and humidity gradients within the capping inversion layer and lowers the marine boundary layer (MBL) depth by 130 m from that of the MET simulation. These differences are associated with weaker entrainment and stronger mean subsidence at the top of the MBL in AERO. Mean top-of-atmosphere outgoing shortwave fluxes, surface latent heat, and surface downwelling longwave fluxes are in better agreement with observations in AERO, compared to the MET simulation. Nevertheless, biases in some of the simulated meteorological quantities (e.g., MBL temperature and humidity) and aerosol quantities (e.g., underestimations of accumulation mode aerosol number) might affect simulated stratocumulus and energy fluxes over the Southeastern Pacific, and require further investigation. The well-simulated timing and outflow patterns of polluted and clean episodes demonstrate the model's ability to capture daily/synoptic scale variations of aerosol and cloud properties, and suggest that the model is suitable for studying atmospheric processes associated with pollution outflow over the ocean. The overall performance of the regional model in simulating mesoscale clouds and boundary layer properties is encouraging and suggests that reproducing gradients of aerosol and cloud droplet concentrations and coupling cloud-aerosol-radiation processes are important when simulating marine stratocumulus over the Southeast Pacific.

Yang Q.; Lee Y.; Gustafson Jr., W. I.; Fast, J. D.; Wang, H.; Easter, R. C.; Morrison, H.; Chapman, E. G.; Spak, S. N.; Mena-Carrasco, M. A.

2011-12-02T23:59:59.000Z

489

Assessing regional scale predictions of aerosols, marine stratocumulus, and their interactions during VOCALS-REx using WRF-Chem  

Science Conference Proceedings (OSTI)

In the recent chemistry version (v3.3) of the Weather Research and Forecasting (WRF-Chem) model, we have coupled the Morrison double-moment microphysics scheme with interactive aerosols so that full two-way aerosol-cloud interactions are included in simulations. We have used this new WRF-Chem functionality in a study focused on assessing predictions of aerosols, marine stratocumulus clouds, and their interactions over the Southeast Pacific using measurements from the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) and satellite retrievals. This study also serves as a detailed analysis of our WRF-Chem simulations contributed to the VOCALS model Assessment (VOCA) project. The WRF-Chem 31-day (October 15-November 16, 2008) simulation with aerosol-cloud interactions (AERO hereafter) is also compared to a simulation (MET hereafter) with fixed cloud droplet number concentrations assumed by the default in Morrison microphysics scheme with no interactive aerosols. The well-predicted aerosol properties such as number, mass composition, and optical depth lead to significant improvements in many features of the predicted stratocumulus clouds: cloud optical properties and microphysical properties such as cloud top effective radius, cloud water path, and cloud optical thickness, and cloud macrostructure such as cloud depth and cloud base height. These improvements in addition to the aerosol direct and semi-direct effects, in turn, feed back to the prediction of boundary-layer characteristics and energy budgets. Particularly, inclusion of interactive aerosols in AERO strengths temperature and humidity gradients within capping inversion layer and lowers the MBL depth by 150 m from that of the MET simulation. Mean top-of-the-atmosphere outgoing shortwave fluxes, surface latent heat, and surface downwelling longwave fluxes are in better agreement with observations in AERO, compared to the MET simulation. Nevertheless, biases in some of the simulated meteorological quantities (e.g., MBL temperature and humidity over the remote ocean) and aerosol quantities (e.g., overestimations of supermicron sea salt mass) might affect simulated stratocumulus and energy fluxes over the SEP, and require further investigations. Although not perfect, the overall performance of the regional model in simulating mesoscale aerosol-cloud interactions is encouraging and suggests that the inclusion of spatially varying aerosol characteristics is important when simulating marine stratocumulus over the southeastern Pacific.

Yang, Qing; Gustafson, William I.; Fast, Jerome D.; Wang, Hailong; Easter, Richard C.; Morrison, H.; Lee, Y.- N.; Chapman, Elaine G.; Spak, S. N.; Mena-Carrasco, M. A.

2011-12-02T23:59:59.000Z

490

Best Estimate Radiation Flux Value-Added Procedure: Algorithm Operational Details and Explanations  

SciTech Connect

This document describes some specifics of the algorithm for best estimate evaluation of radiation fluxes at Southern Great Plains (SGP) Central Facility (CF). It uses the data available from the three co-located surface radiometer platforms at the SGP CF to automatically determine the best estimate of the irradiance measurements available. The Best Estimate Flux (BEFlux) value-added procedure (VAP) was previously named Best Estimate ShortWave (BESW) VAP, which included all of the broadband and spectral shortwave (SW) measurements for the SGP CF. In BESW, multiple measurements of the same quantities were handled simply by designating one as the primary measurement and using all others to merely fill in any gaps. Thus, this “BESW” is better termed “most continuous,” since no additional quality assessment was applied. We modified the algorithm in BESW to use the average of the closest two measurements as the best estimate when possible, if these measurements pass all quality assessment criteria. Furthermore, we included longwave (LW) fields in the best estimate evaluation to include all major components of the surface radiative energy budget, and renamed the VAP to Best Estimate Flux (BEFLUX1LONG).

Shi, Y; Long, CN

2002-10-01T23:59:59.000Z

491

Interstitial BiO molecule as a center of broadband IR luminescence in bismuth-doped silica glass  

E-Print Network (OSTI)

IR luminescence and absorption in bismuth-doped silica glass-core fibers observed recently (see [arXiv:1106.2969v1 [physics.optics]) are argued to be caused by transitions in interstitial BiO molecules

Sokolov, V O; Dianov, E M

2011-01-01T23:59:59.000Z

492

36th Telecommunications Policy Research Conference, Sept. 2008 Quantifying the Costs of a Nationwide Broadband Public Safety Wireless  

E-Print Network (OSTI)

(IWN), a program only for federal emergency responders, and an effort by the FCC to create a public-private-safety-only network and a public-private partnership which serves both public safety and commercial subscribers. We safety personnel (i.e. local, state, and federal) on 10MHz of spectrum in the 700MHz band, 2. a public-private

Peha, Jon M.

493

THE 5 hr PULSE PERIOD AND BROADBAND SPECTRUM OF THE SYMBIOTIC X-RAY BINARY 3A 1954+319  

SciTech Connect

We present an analysis of the highly variable accreting X-ray pulsar 3A 1954+319 using 2005-2009 monitoring data obtained with INTEGRAL and Swift. This considerably extends the pulse period history and covers flaring episodes in 2005 and 2008. In 2006 the source was identified as one of only a few known symbiotic X-ray binaries (SyXBs), i.e., systems composed of a neutron star accreting from the inhomogeneous medium around an M-giant star. The extremely long pulse period of {approx}5.3 hr is directly visible in the 2008 INTEGRAL-ISGRI outburst light curve. The pulse profile is double peaked and generally not significantly energy dependent although there is an indication of possible softening during the main pulse. During the outburst a strong spin-up of -1.8 Multiplication-Sign 10{sup -4} hr hr{sup -1} occurred. Between 2005 and 2008 a long-term spin-down trend of 2.1 Multiplication-Sign 10{sup -5} hr hr{sup -1} was observed for the first time for this source. The 3-80 keV pulse peak spectrum of 3A 1954+319 during the 2008 flare could be well described by a thermal Comptonization model. We interpret the results within the framework of a recently developed quasi-spherical accretion model for SyXBs.

Marcu, Diana M.; Pottschmidt, Katja [NASA Goddard Space Flight Center, Astrophysics Science Division, Code 661, Greenbelt, MD 20771 (United States); Fuerst, Felix; Grinberg, Victoria; Mueller, Sebastian; Wilms, Joern [Dr. Karl Remeis-Observatory and ECAP, University of Erlangen-Nuremberg, 96049 Bamberg (Germany); Postnov, Konstantin A. [Sternberg Astronomical Institute, 119992 Moscow (Russian Federation); Corbet, Robin H. D. [CRESST and University of Maryland Baltimore County, Baltimore, MD 21250 (United States); Markwardt, Craig B. [NASA Goddard Space Flight Center, Astrophysics Science Division, Code 662, Greenbelt, MD 20771 (United States); Cadolle Bel, Marion [European Space Agency, European Space Astronomy Centre, 28691 Villanueva de la Canada, 28692 Madrid (Spain)

2011-11-20T23:59:59.000Z

494

The future of the internet economy : addressing challenges facing the implementation of the Australian national broadband network.  

E-Print Network (OSTI)

??Innovation is vital for the future of Australia.s internet economy. Innovations rely on businesses. ability to innovate. Businesses. ability to innovate relies on their employees.… (more)

Cradduck, Lucy Margaret

2011-01-01T23:59:59.000Z

495

Comparison of broadband mode arrivals at ranges of 3515 km and 5171 km in the North Pacific  

Science Conference Proceedings (OSTI)

The Acoustic Thermometry of Ocean Climate (ATOC) provided an opportunity to observe signals propagating in the low?order modes of the ocean waveguide. Understanding the fluctuations of these mode signals is an important prerequisite to using them for tomography or other applications. In previous work

2003-01-01T23:59:59.000Z

496

Monthly average clear-sky broadband irradiance database for worldwide solar heat gain and building cooling load calculations  

Science Conference Proceedings (OSTI)

This paper establishes the formulation of a new clear-sky solar radiation model appropriate for algorithms calculating cooling loads in buildings. The aim is to replace the ASHRAE clear-sky model of 1967, whose limitations are well known and are reviewed. The new model is derived in two steps. The first step consists of obtaining a reference irradiance dataset from the REST2 model, which uses a high-performance, validated, two-band clear-sky algorithm. REST2 requires detailed inputs about atmospheric conditions such as aerosols, water vapor, ozone, and ground albedo. The development of global atmospheric datasets used as inputs to REST2 is reviewed. For the most part, these datasets are derived from space observations to guarantee universality and accuracy. In the case of aerosols, point-source terrestrial measurements were also used as ground truthing of the satellite data. The second step of the model consists of fits derived from a REST2-based reference irradiance dataset. These fits enable the derivation of compact, but relatively accurate expressions, for beam and diffuse clear-sky irradiance. The fitted expressions require the tabulation of only two pseudo-optical depths for each month of the year. The resulting model, and its tabulated data, are expected to be incorporated in the 2009 edition of the ASHRAE Handbook of Fundamentals. (author)

Gueymard, Christian A. [Solar Consulting Services, P.O. Box 392, Colebrook, NH 03576 (United States); Thevenard, Didier [Numerical Logics Inc., 498 Edenvalley Cres., Waterloo, Ont. (Canada)

2009-11-15T23:59:59.000Z

497

SPECTRAL IRRADIANCE CALIBRATION IN THE INFRARED. XVII. ZERO-MAGNITUDE BROADBAND FLUX REFERENCE FOR VISIBLE-TO-INFRARED PHOTOMETRY  

Science Conference Proceedings (OSTI)

The absolutely calibrated infrared (IR) stellar spectra of standard stars described by Engelke et al. are being extended into the visible and will span a continuous wavelength range from {approx}0.35 {mu}m to 35.0 {mu}m. This paper, which is a continuation of the series on calibration initiated with Cohen et al., presents the foundation of this extension. We find that due to various irregularities Vega ({alpha} Lyr) is not suitable for its traditional role as the primary visible or near-infrared standard star. We therefore define a new zero-point flux that is independent of Vega and, as far as is feasible, uses measured spectral energy distributions (SEDs) and fluxes derived from photometry. The calibrated primary stars now underpinning this zero-point definition are 109 Vir in the visible and Sirius ({alpha} CMa) in the infrared. The resulting zero-point SED tests well against solar analog data presented by Rieke et al. while also maintaining an unambiguous link to specific calibration stars, thus providing a pragmatic range of options for any researcher wishing to tie it to a given set of photometry.

Engelke, Charles W. [Institute for Scientific Research, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02135 (United States); Price, Stephan D.; Kraemer, Kathleen E. [Space Vehicle Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom AFB, MA 01731 (United States)

2010-12-15T23:59:59.000Z

498

Simulation studies for the detection of changes in broadband albedo and shortwave nadir reflectance spectra under a climate change scenario  

E-Print Network (OSTI)

et al. , 2006b] and with MODTRAN™ version 5.3.0.0 [Berk etof the calculations from MODTRAN. Spectrally resolved clear-been computed from MODTRAN and are completely consistent

Feldman, D.R.

2013-01-01T23:59:59.000Z

499

On the Usage of Spectral and Broadband Satellite Instrument Measurements to Differentiate Climate Models with Different Cloud Feedback Strengths  

Science Conference Proceedings (OSTI)

Top-of-atmosphere radiometric signals associated with different high- and low-cloud–radiative feedbacks have been examined through the use of an observing system simulation experiment (OSSE). The OSSE simulates variations in the spectrally ...

Daniel R. Feldman; Daniel M. Coleman; William D. Collins

2013-09-01T23:59:59.000Z

500

Simulation studies for the detection of changes in broadband albedo and shortwave nadir reflectance spectra under a climate change scenario  

E-Print Network (OSTI)

the Earth’s reflected solar radiation. While Pallé et al. [of the reflected solar radiation [Wielicki et al. , 1995].the nadir reflectance of solar radiation from Earth to space

Feldman, D.R.

2013-01-01T23:59:59.000Z