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Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Climatology of Upper-Tropospheric Relative Humidity from the Atmospheric Infrared Sounder and Implications for Climate  

Science Conference Proceedings (OSTI)

Recently available satellite observations from the Atmospheric Infrared Sounder (AIRS) are used to calculate relative humidity in the troposphere. The observations illustrate many scales of variability in the atmosphere from the seasonal ...

Andrew Gettelman; William D. Collins; Eric J. Fetzer; Annmarie Eldering; Fredrick W. Irion; Phillip B. Duffy; Govindasamy Bala

2006-12-01T23:59:59.000Z

2

The Global Distribution of Supersaturation in the Upper Troposphere from the Atmospheric Infrared Sounder  

Science Conference Proceedings (OSTI)

Satellite data from the Atmospheric Infrared Sounder (AIRS) is analyzed to examine regions of the upper troposphere that are supersaturated: where the relative humidity (RH) is greater than 100%. AIRS data compare well to other in situ and ...

Andrew Gettelman; Eric J. Fetzer; Annmarie Eldering; Fredrick W. Irion

2006-12-01T23:59:59.000Z

3

An Evaluation of Satellite Remote Sensing Data Products for Land Surface Hydrology: Atmospheric Infrared Sounder  

Science Conference Proceedings (OSTI)

The skill of instantaneous Atmospheric Infrared Sounder (AIRS) retrieved near-surface meteorology, including surface skin temperature (Ts), air temperature (Ta), specific humidity (q), and relative humidity (RH), as well as model-derived surface ...

Craig R. Ferguson; Eric F. Wood

2010-12-01T23:59:59.000Z

4

Impact of Atmospheric Infrared Sounder Data on the Numerical Simulation of a Historical Mumbai Rain Event  

Science Conference Proceedings (OSTI)

In this paper, the three-dimensional variational data assimilation scheme (3DVAR) in the fifth-generation Pennsylvania State University–National Center for Atmospheric Research (Penn State–NCAR) Mesoscale Model (MM5) is used to study the impact ...

Randhir Singh; P. K. Pal; C. M. Kishtawal; P. C. Joshi

2008-10-01T23:59:59.000Z

5

ARM - Field Campaign - ASSIST: Atmospheric Sounder Spectrometer for  

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

govCampaignsASSIST: Atmospheric Sounder Spectrometer for Infrared govCampaignsASSIST: Atmospheric Sounder Spectrometer for Infrared Spectral Technology Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : ASSIST: Atmospheric Sounder Spectrometer for Infrared Spectral Technology 2008.07.08 - 2008.07.18 Lead Scientist : Michael Howard For data sets, see below. Description Goals of assist were to intercompare radiance spectra and profile retrievals from a new AERI-like instrument, called "ASSIST" with the SGP site AERI(s) and calculations from Radiosondes measurements. * To bring the ASSIST instrument to the SGP ACRF and perform simultaneous measurements of the sky radiation with those from the AERI. * On relatively cloud-free days, release a special radiosonde at the

6

Ozone Profile Retrieval from an Advanced Infrared Sounder: Experiments with Tropopause-Based Climatology and Optimal Estimation Approach  

Science Conference Proceedings (OSTI)

Motivated by a significant potential for retrieving atmospheric ozone profile information from advanced satellite infrared sounders, this study investigates various methods to optimize ozone retrievals. A set of retrieval experiments has been ...

Jennifer C. Wei; Laura L. Pan; Eric Maddy; Jasna V. Pittman; Murty Divarkarla; Xiaozhen Xiong; Chris Barnet

2010-07-01T23:59:59.000Z

7

The Gastropod Fast Radiative Transfer Model for Advanced Infrared Sounders and Characterization of Its Errors for Radiance Assimilation  

Science Conference Proceedings (OSTI)

Principal aspects of the development of Gastropod, a fixed-pressure-grid fast radiative transfer model for the Atmospheric Infrared Sounder (AIRS), are described. Performance of the forward and gradient operators is characterized, and the impact ...

V. Sherlock; A. Collard; S. Hannon; R. Saunders

2003-12-01T23:59:59.000Z

8

Vertical Moist Thermodynamic Structure of the Madden–Julian Oscillation in Atmospheric Infrared Sounder Retrievals: An Update and a Comparison to ECMWF Interim Re-Analysis  

Science Conference Proceedings (OSTI)

The large-scale vertical moist thermodynamic structure of the Madden–Julian oscillation (MJO) was documented using the first 2.5 yr (2002–05) of version 4 atmospheric specific humidity and temperature profiles from the Atmospheric Infrared ...

Baijun Tian; Duane E. Waliser; Eric J. Fetzer; Yuk L. Yung

2010-12-01T23:59:59.000Z

9

An Improved Algorithm for the Operational Calibration of the High-Resolution Infrared Radiation Sounder  

Science Conference Proceedings (OSTI)

Radiance data from the High-Resolution Infrared Radiation Sounder (HIRS) have been used routinely in both direct radiance assimilation for numerical weather prediction and climate change detection studies. The operational HIRS calibration ...

Changyong Cao; Kenneth Jarva; Pubu Ciren

2007-02-01T23:59:59.000Z

10

Information Content of Infrared Satellite Sounding Measurements with Respect to CO2  

Science Conference Proceedings (OSTI)

Information theory is used to study the capabilities of the new-generation satellite infrared sounders [Atmospheric Infrared Sounder (AIRS) and Infrared Atmospheric Sounding Interferometer (IASI)] for retrieving atmospheric carbon dioxide (CO2) ...

R. J. Engelen; G. L. Stephens

2004-02-01T23:59:59.000Z

11

VISSR Atmospheric Sounder (VAS) Simulation Experiment for a Severe Storm Environment  

Science Conference Proceedings (OSTI)

The GOES satellites launched in the 1980's are carrying an instrument called the VISSR Atmospheric Sounder (VAS), which is designed to provide temperature and moisture profile-sounding capability for mesoscale weather systems. As a controlled ...

Dennis Chesters; Louis W. Uccellini; Anthony Mostek

1982-03-01T23:59:59.000Z

12

RETRIEVAL OF ATMOSPHERIC INVERSIONS USING GEOSTATIONARY HIGH-SPECTRAL-RESOLUTION SOUNDER RADIANCE INFORMATION  

E-Print Network (OSTI)

P5.38 RETRIEVAL OF ATMOSPHERIC INVERSIONS USING GEOSTATIONARY HIGH-SPECTRAL- RESOLUTION SOUNDER RADIANCE INFORMATION Jun Li Cooperative Institute for Meteorological Satellite Studies (CIMSS) University and possible fog formation, numerical model initialization, and sounding retrieval. High- spectral

Li, Jun

13

An Observing System Simulation Experiment for the Laser Atmospheric Wind Sounder (LAWS)  

Science Conference Proceedings (OSTI)

A series of observing system simulation experiments (OSSES) was conducted to assess the potential impact of the Laser Atmospheric Wind Sounder (LAWS) instrument on a 5-day forecast using the Florida State University (FSU) primitive equation ...

G. D. Rohaly; T. N. Krishnamurti

1993-09-01T23:59:59.000Z

14

Low-Level Water Vapor Fields from the VISSR Atmospheric Sounder (VAS) “Split Window” Channels  

Science Conference Proceedings (OSTI)

A simple physical algorithm is developed which calculates the water vapor content of the lower troposphere from the 11 and 12 ?m (split window) channels on the VISSR Atmospheric Sounder (VAS) on the Geostationary Operational Environmental ...

Dennis Chesters; Louis W. Uccellini; Wayne D. Robinson

1983-05-01T23:59:59.000Z

15

Acoustic Sounder Observations of the Atmospheric Boundary Layer from the Top of a Steep Mountain  

Science Conference Proceedings (OSTI)

Preliminary results from a series of experiments utilizing an acoustic sounder located at the top of a 1026 m mountain are presented which show some interesting features of the evolution of the atmospheric boundary layer.

D. N. Asimakopoulos; D. G. Deligiorgi; D. P. Lalas

1980-01-01T23:59:59.000Z

16

The Effect of VISSR Atmospheric Sounder Data on Some LFM Analyses and Forecasts  

Science Conference Proceedings (OSTI)

The impact of VMR Atmospheric Sounder (VAS) temperature profiles upon the Limited-Area Finemesh Model used operationally at the National Meteorological Center (NMC) is investigated for a set of six cases during the winter or 1981/82. Pairs of ...

Edward A. O'Lenic

1986-10-01T23:59:59.000Z

17

Results of a Joint NOAA/NASA Sounder Simulation Study  

Science Conference Proceedings (OSTI)

NOAA and NASA have conducted a joint simulation study to compare the retrieval accuracy of atmospheric temperature profiles and surface skin temperature retrieved from HIRS2, the current operational infrared temperature sounder, and AMTS, a ...

N. Phillips; J. Susskind; L. McMillin

1988-02-01T23:59:59.000Z

18

Mathematical Aspects in Meteorological Processing of Infrared Spectral Measurements from the GOES Sounder. Part II: Analysis of Spatial and Temporal Continuity of Spectral Measurements from the GOES-8 Sounder  

Science Conference Proceedings (OSTI)

The spatial and temporal continuity of the infrared measurements from the Geostationary Operational Environmental Satellite (GOES)-8 sounder data are investigated, and an experimental processing approach is presented. Spatial filtering and cloud ...

Youri Plokhenko; W. Paul Menzel; Gail Bayler; Timothy J. Schmit

2003-06-01T23:59:59.000Z

19

Intersatellite Radiance Biases for the High-Resolution Infrared Radiation Sounders (HIRS) on board NOAA-15, -16, and -17 from Simultaneous Nadir Observations  

Science Conference Proceedings (OSTI)

Intersatellite radiance comparisons for the 19 infrared channels of the High-Resolution Infrared Radiation Sounders (HIRS) on board NOAA-15, -16, and -17 are performed with simultaneous nadir observations at the orbital intersections of the ...

Changyong Cao; Hui Xu; Jerry Sullivan; Larry McMillin; Pubu Ciren; Yu-Tai Hou

2005-04-01T23:59:59.000Z

20

Calibration of the Improved Stratospheric and Mesospheric Sounder. Part I: Introduction, Spectral, and Radiometric Calibration  

Science Conference Proceedings (OSTI)

The Improved Stratospheric and Mesospheric Sounder (ISAMS) is an infrared spectroradiometer that formed part of the science instrument payload of the Upper Atmosphere Research Satellite. An essential part of the success of ISAMS in orbit was a ...

J. Ballard; C. W. P. Palmer; P. E. Morris; T. J. Nightingale; J. Firth; R. J. Knight; P. Venters; R. J. Wells; J. G. Whitney

1996-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Comparing MODIS and AIRS Infrared-Based Cloud Retrievals  

Science Conference Proceedings (OSTI)

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

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

2011-05-01T23:59:59.000Z

22

Initial Cloud Detection Using the EOF Components of High-Spectral-Resolution Infrared Sounder Data  

Science Conference Proceedings (OSTI)

Measured cloud spectral signatures in high-resolution infrared interferometer data have been separated from the clear-air signatures using singular value decomposition. Sets of empirical orthogonal functions (EOFs) have then been created from ...

Jonathan A. Smith; Jonathan P. Taylor

2004-01-01T23:59:59.000Z

23

A decadal gridded hyperspectral infrared record for climate sep 1st 2002--aug 31st 2012  

Science Conference Proceedings (OSTI)

We present a gridded Fundamental Decadal Data Record (FDDR) of Brightness Temperatures (BT) from the NASA Atmospheric Infrared Sounder (AIRS) from ten years of hyperspectral Infrared Radiances onboard the NASA EOS Aqua satellite. Although global surface ...

David Raymond Chapman / Milton Halem

2012-01-01T23:59:59.000Z

24

A Study of the Solar Radiation Effect on the 4.3-?m Channels of the High-Resolution Infrared Radiation Sounder  

Science Conference Proceedings (OSTI)

Measurements of infrared radiation from the National Oceanic and Atmospheric Administration series of satellites are used to retrieve atmospheric temperature, moisture, and ozone. It is well known that the measurements from the 4.3-?m channels of ...

Larry M. McMillin; David S. Crosby

2000-10-01T23:59:59.000Z

25

Infrared Continental Surface Emissivity Spectra Retrieved from AIRS Hyperspectral Sensor  

Science Conference Proceedings (OSTI)

Atmospheric Infrared Sounder (AIRS; NASA Aqua platform) observations over land are interpreted in terms of monthly mean surface emissivity spectra at a resolution of 0.05 ?m and skin temperature. For each AIRS observation, an estimation of the ...

E. Péquignot; A. Chédin; N. A. Scott

2008-06-01T23:59:59.000Z

26

EAQUATE: An International Experiment For Hyperspectral Atmospheric Sounding Validation  

Science Conference Proceedings (OSTI)

The international experiment called the European Aqua Thermodynamic Experiment (EAQUATE) was held in September 2004 in Italy and the United Kingdom to validate Aqua satellite Atmospheric Infrared Sounder (AIRS) radiance measurements and derived ...

J. P. Taylor; S. Newman; W. L. Smith; V. Cuomo; F. Romano; G. Pappalardo; G. Pavese; L. Mona; A. Amodeo; A. M. Larar; D. K. Zhou; C. Serio; P. Di Girolamo; F. Esposito; G. Grieco; D. Summa; R. Restieri; G. Masiello; T. Maestri; R. Rizzi; P. Antonelli; S. Mango; G. Pisani

2008-02-01T23:59:59.000Z

27

Mathematical Aspects in Meteorological Processing of Infrared Spectral Measurements from the GOES Sounder. Part I: Constructing the Measurement Estimate Using Spatial Smoothing  

Science Conference Proceedings (OSTI)

The accuracy of temperature and moisture vertical profiles retrieved from infrared spectral measurements is dependent on accurate definition of all contributions from the observed “surface–atmosphere” system to the outgoing radiances. The ...

Youri Plokhenko; W. Paul Menzel

2001-03-01T23:59:59.000Z

28

Surface Emissivity Impact on Temperature and Moisture Soundings from Hyperspectral Infrared Radiance Measurements  

Science Conference Proceedings (OSTI)

An accurate land surface emissivity (LSE) is critical for the retrieval of atmospheric temperature and moisture profiles along with land surface temperature from hyperspectral infrared (IR) sounder radiances; it is also critical to assimilating IR ...

Zhigang Yao; Jun Li; Jinlong Li; Hong Zhang

2011-06-01T23:59:59.000Z

29

Calibration of Geostationary-Satellite Infrared Radiometers Using the TIROS-N Vertical Sounder: Application to METEOSAT-1  

Science Conference Proceedings (OSTI)

A method is presented for the calibration of infrared radiometers on geostationary satellites using calibrated infrared radiometers on an orbiting satellite. This method relies on similarities between the weighting functions corresponding to the ...

N. Beriot; N. A. Scott; A. Chedin; P. Sitbon

1982-01-01T23:59:59.000Z

30

A Simulated Climatology of Spectrally Decomposed Atmospheric Infrared Radiation  

Science Conference Proceedings (OSTI)

A simulation experiment is conducted to inquire into the mean climate state and likely trends in atmospheric infrared radiation spectra. Upwelling and downwelling spectra at five vertical levels from the surface to the top of the atmosphere (TOA) ...

Yi Huang

2013-03-01T23:59:59.000Z

31

Applicability of AIRS Monthly Mean Atmospheric Water Vapor Profiles over the Tibetan Plateau Region  

Science Conference Proceedings (OSTI)

The research explores the applicability of the gridded (level 3) monthly tropospheric water vapor (version 5) retrievals from the Atmospheric Infrared Sounder (AIRS) instrument and the Advanced Microwave Sounding Unit (AMSU) on board the NASA Aqua ...

Yuwei Zhang; Donghai Wang; Panmao Zhai; Guojun Gu

2012-11-01T23:59:59.000Z

32

Layered Precipitable Water from the Infrared VAS Sounder during a Return-Flow Event over the Gulf of Mexico  

Science Conference Proceedings (OSTI)

Spatial and temporal changes in the vertical distribution of atmospheric water vapor are investigated during a period following the intrusion of cold continental air over the Gulf of Mexico, during the Gulf of Mexico Experiment (GUFMEX) in ...

Robert M. Rabin; Lynn A. McMurdie; Christopher M. Hayden; Gary S. Wade

1992-08-01T23:59:59.000Z

33

Infrared Radiative Properties Of the Maritime Antarctic Atmosphere  

Science Conference Proceedings (OSTI)

The longwave radiation environment of the Antarctic Peninsula and Southern Ocean has been investigated using radiometric Fourier Transform Infrared (FTIR) measurements of atmospheric emission in conjunction with detailed radiative transfer ...

Dan Lubin

1994-01-01T23:59:59.000Z

34

Construction of the Remote Sensing Systems V3.2 Atmospheric Temperature Records from the MSU and AMSU Microwave Sounders  

Science Conference Proceedings (OSTI)

Measurements made by microwave sounding instruments provide a multidecadal record of atmospheric temperature change. Measurements began in late 1978 with the launch of the first Microwave Sounding Unit (MSU) and continue to the present. In 1998, ...

Carl A. Mears; Frank J. Wentz

2009-06-01T23:59:59.000Z

35

ARM Site Atmospheric State Best Estimates for AIRS Validation  

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

Site Atmospheric State Best Estimates Site Atmospheric State Best Estimates for AIRS Validation D. C. Tobin, H. E. Revercomb, W. F. Feltz, R. D. Knuteson, and D. D. Turner Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin B. M. Lesht Environmental Research Division Argonne National Laboratory Argonne, Illinois L. Strow University of Maryland College Park, Maryland C. Barnet Joint Center for Earth Systems Technology Baltimore, Maryland E. Fetzer National Aeronautics Space Administration Jet Propulsion Laboratory Pasadena, California Introduction The atmospheric infrared sounder (AIRS) is a high spectral resolution infrared sounder on the earth observing plan (EOS) Aqua platform. Temperature and water vapor profile retrievals from AIRS are

36

Shortwave Infrared Spectroradiometer for Atmospheric Transmittance Measurements  

Science Conference Proceedings (OSTI)

The use of a shortwave infrared (SWIR) spectroradiometer as a solar radiometer is presented. The radiometer collects 1024 channels of data over the spectral range of 1.1–2.5 ?m. The system was tested by applying the Langley method to data ...

M. Sicard; K. J. Thome; B. G. Crowther; M. W. Smith

1998-02-01T23:59:59.000Z

37

Atmospheric Absorption in the VAS Split-Window Channels  

Science Conference Proceedings (OSTI)

The Visible Infrared Spin-Scan Radiometer (VISSR) Atmospheric Sounder (VAS) split-window channels at 10–12.5 ?m and 12.6–12.8 ?m can be used to give measurements of sea surface temperature (SST) and precipitable water amount in the lower ...

Ian J. Barton

1988-08-01T23:59:59.000Z

38

Computing the Atmospheric Absorption for the DMSP Operational Linescan System Infrared Channel  

Science Conference Proceedings (OSTI)

An accurate and rapid means is presented for computing the atmospheric absorption for the infrared channel (10.2–12.7 ?m) on the Defense Meteorological Satellite Program operational linescan system (OLS) for use in remote sensing studies of ...

Thomas J. Greenwald; Charles J. Drummond

1999-12-01T23:59:59.000Z

39

Mesoscale Spectra of Mars’s Atmosphere Derived from MGS TES Infrared Radiances  

Science Conference Proceedings (OSTI)

Wavenumber spectra of the atmospheric potential energy of Mars at mesoscales (wavelengths of 64–957 km) were obtained as a function of latitude, season, and Martian year using infrared radiance data obtained by the Thermal Emission Spectrometer (...

Takeshi Imamura; Yasuhiro Kawasaki; Tetsuya Fukuhara

2007-05-01T23:59:59.000Z

40

Comparison of Infrared Atmospheric Brightness Temperatures Measured by a Fourier Transform Spectrometer and a Filter Radiometer  

Science Conference Proceedings (OSTI)

Increased interest in using atmospheric brightness temperature measurements from simple infrared radiometers combined with radars and lidars has prompted the investigation of their accuracy for various sky conditions. In comparisons of ...

Joseph A. Shaw; Jack B. Snider; James H. Churnside; Mark D. Jacobson

1995-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Mars atmospheric CO[subscript 2] condensation above the north and south poles as revealed by radio occultation, climate sounder, and laser ranging observations  

E-Print Network (OSTI)

[1] We study the condensation of CO[subscript 2] in Mars' atmosphere using temperature profiles retrieved from radio occultation measurements from Mars Global Surveyor (MGS) as well as the climate sounding instrument onboard ...

Hu, Renyu

42

Clouds as Seen by Satellite Sounders (3I) and Imagers (ISCCP). Part I: Evaluation of Cloud Parameters  

Science Conference Proceedings (OSTI)

The improved initialization inversion (3I) algorithms convert TIROS-N Operational Vertical Sounder observations from the National Oceanic and Atmospheric Administration (NOAA) polar-orbiting environmental satellites into atmospheric temperature ...

C. J. Stubenrauch; W. B. Rossow; F. Chéruy; A. Chédin; N. A. Scott

1999-08-01T23:59:59.000Z

43

Studies of Solar Heating by CO2 in the Upper Atmosphere Using a Non-LTE Model and Satellite Data  

Science Conference Proceedings (OSTI)

Solar heating and thermal cooling rates by the CO2 near-infrared bands in the mesosphere and lower thermosphere are derived from measurements of the CO2 4.3 ?m atmospheric emission by the Stratospheric and Mesospheric Sounder on Nimbus 7. A ...

M. López-Puertas; M. A. López-Valverde; F. W. Taylor

1990-04-01T23:59:59.000Z

44

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

Science Conference Proceedings (OSTI)

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

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

1999-10-01T23:59:59.000Z

45

Infrared Cooling in Cloudy Atmospheres: Precision of Grid Point Selection for Numerical Models  

Science Conference Proceedings (OSTI)

The infrared layer temperature change in a cloudy atmosphere normally shows warming at the base of the cloud and intense cooling at the top of the cloud. In a model that uses broad-band radiative transfer to calculate atmospheric temperature ...

L. P. Stearns

1983-07-01T23:59:59.000Z

46

Measurements of the Infrared SpectraLines of Water Vapor at Atmospheric Temperatures  

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

Measurements of the Infrared Spectral Lines Measurements of the Infrared Spectral Lines of Water Vapor at Atmospheric Temperatures P. Varanasi and Q. Zou Institute for Terrestrial and Planetary Atmospheres State University of New York at Stony Brook Stony Brook, New York Introduction Water vapor is undoubtedly the most dominant greenhouse gas in the terrestrial atmosphere. In the two facets of Atmospheric Radiation Measurement (ARM) Program research, atmospheric remote sensing (air-borne as well as Cloud and Radiation Testbed [CART] site-based) and modeling of atmospheric radiation, the spectrum of water vapor, ranging from the microwave to the visible wavelengths, plays a significant role. Its spectrum has been the subject of many studies throughout the last century. Therefore, it is natural to presume it should be fairly well established by now. However, the need for a

47

An Infrared Hygrometer for Atmospheric Research and Routine Monitoring  

Science Conference Proceedings (OSTI)

The development and testing of a field durable, infrared differential absorption hygrometer is described. This noncontact hygrometer offers reliable operation in harsh environments while maintaining subsecond response speed. A modified ...

Todd A. Cerni

1994-04-01T23:59:59.000Z

48

Clouds as Seen by Satellite Sounders (3I) and Imagers (ISCCP). Part III: Spatial Heterogeneity and Radiative Effects  

Science Conference Proceedings (OSTI)

Their relatively good spectral resolution makes infrared sounders very useful for the determination of cloud properties (day and night), and their coarse spatial resolution has less effect on clouds with large spatial extents like cirrus clouds. ...

C. J. Stubenrauch; W. B. Rossow; N. A. Scott; A. Chédin

1999-12-01T23:59:59.000Z

49

ARM - Publications: Science Team Meeting Documents: ARM Site Atmospheric  

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

ARM Site Atmospheric State Best Estimates for AIRS Forward Model and ARM Site Atmospheric State Best Estimates for AIRS Forward Model and Retrieval Validation Tobin, David University of Wisconsin-Madison Revercomb, Henry University Of Wisconsin-Madison Knuteson, Robert University Of Wisconsin Feltz, Wayne University of Wisconsin Moy, Leslie University of Wisconsin-Madison Lesht, Barry Argonne National Laboratory Cress, Ted Pacific Northwest National Laboratory Strow, Larrabee Hannon, Scott Fetzer, Eric Jet Propulsion Laboratory The Atmospheric Infrared Sounder (AIRS) on the EOS Aqua platform is the first of a new generation of advanced hyperspectral atmospheric sounders with the capability of retrieving temperature and trace gas profiles with high vertical resolution and absolute accuracy. In the past few years ARM has played a major role in the validation of AIRS, including the launch of

50

Profiling the Lower Troposphere over the Ocean with Infrared Hyperspectral Measurements of the Marine-Atmosphere Emitted Radiance Interferometer  

Science Conference Proceedings (OSTI)

Measurements of the spectra of infrared emission from the atmosphere were taken by a Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) deployed on the NOAA ship Ronald H. Brown during the Aerosol and Ocean Science Expedition (AEROSE) in ...

Malgorzata Szczodrak; Peter J. Minnett; Nicholas R. Nalli; Wayne F. Feltz

2007-03-01T23:59:59.000Z

51

Vertical Resolution and Accuracy of Atmospheric Infrared Sounding Spectrometers  

Science Conference Proceedings (OSTI)

A theoretical analysis is performed to evaluate the accuracy and vertical resolution of atmospheric profiles obtained with the HIRS/2, GOES I/M, and HIS instruments. In addition, a linear simultaneous retrieval algorithm is used with aircraft ...

Hung-Lung Huang; William L. Smith; Harold M. Woolf

1992-03-01T23:59:59.000Z

52

The Radiometric Calibration Budget for the High-Resolution Dynamics Limb Sounder  

Science Conference Proceedings (OSTI)

The High-Resolution Dynamics Limb Sounder is a 21-channel infrared filter radiometer due to be launched on the Earth Observing System Chemistry platform in 2002. The channels range in wavelength from 6.1 to 17.8 ?m, with fractional widths of ...

C. W. P. Palmer; J. G. Whitney

1996-04-01T23:59:59.000Z

53

An Approach for Improving Cirrus Cloud-Top Pressure/Height Estimation by Merging High-Spatial-Resolution Infrared-Window Imager Data with High-Spectral-Resolution Sounder Data  

Science Conference Proceedings (OSTI)

The next-generation Visible and Infrared Imaging Radiometer Suite (VIIRS) offers infrared (IR)-window measurements with a horizontal spatial resolution of at least 1 km, but it lacks IR spectral bands that are sensitive to absorption by carbon ...

Elisabeth Weisz; W. Paul Menzel; Nadia Smith; Richard Frey; Eva E. Borbas; Bryan A. Baum

2012-08-01T23:59:59.000Z

54

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

Science Conference Proceedings (OSTI)

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

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

1998-03-01T23:59:59.000Z

55

Estimating Soil Wetness from the GOES Sounder  

Science Conference Proceedings (OSTI)

In this note, the relationship between the observed daytime rise in surface radiative temperature, derived from the Geostationary Operational Environmental Satellites (GOES) sounder clear-sky data, and modeled soil moisture is explored over the ...

Robert M. Rabin; Timothy J. Schmit

2006-07-01T23:59:59.000Z

56

Sensitivity of Spectroradiometric Calibrations in the Near Infrared to Variations in Atmospheric Water Vapor: Preprint  

DOE Green Energy (OSTI)

Spectra of natural sunlight and artificial sources are important in photovoltaic research. Calibration of the spectroradiometers used for these measurements is derived from the response to spectral irradiance standards from the National Institute of Standards and Technology (NIST). Some photovoltaic devices respond in the near infrared, or NIR, so spectral measurements and calibrations are needed in this region. Over the course of several calibrations, we identified variations> 5% in spectroradiometer NIR calibration data for a certain spectroradiometer. A detailed uncertainty analysis did not reflect the observed variation. Reviewing calibration procedures and historical data, we noted that the variations were seen in water vapor absorption bands. We used spectral transmission models to compute changes in atmospheric transmission (as a function of water vapor content) over path lengths occurring during calibration. The results indicate that the observed variations result from varying water vapor content. A correction algorithm for adjusting measured data was developed based on our analysis.

Myers, D. R.; Andreas, A. A.

2004-03-01T23:59:59.000Z

57

Comparison of AIRS and IASI Radiances Using GOES Imagers as Transfer Radiometers toward Climate Data Records  

Science Conference Proceedings (OSTI)

The Atmospheric Infrared Sounder (AIRS) and the Infrared Atmospheric Sounding Interferometer (IASI), together with the future Cross-track Infrared Sounder, will provide long-term hyperspectral measurements of the earth and its atmosphere at 10 ...

Likun Wang; Xiangqian Wu; Mitch Goldberg; Changyong Cao; Yaping Li; Seung-Hee Sohn

2010-03-01T23:59:59.000Z

58

The Marine-Atmospheric Emitted Radiance Interferometer: A High-Accuracy, Seagoing Infrared Spectroradiometer  

Science Conference Proceedings (OSTI)

The Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) is described, and some examples of the environmental variables that can be derived from its measurements and the types of research that these can support are briefly presented. The M-...

P. J. Minnett; R. O. Knuteson; F. A. Best; B. J. Osborne; J. A. Hanafin; O. B. Brown

2001-06-01T23:59:59.000Z

59

Experimental GOES Sounder Products for the Assessment of Downburst Potential  

Science Conference Proceedings (OSTI)

Several experimental products derived from Geostationary Operational Environmental Satellite (GOES) Sounder retrievals (vertical profiles of temperature and moisture) have been developed to assist weather forecasters in assessing the potential ...

Gary P. Ellrod; James P. Nelson III; Michael R. Witiw; Lynda Bottos; William P. Roeder

2000-10-01T23:59:59.000Z

60

Validation and Use of GOES Sounder Moisture Information  

Science Conference Proceedings (OSTI)

The Geostationary Operational Environmental Satellite (GOES) sounders have provided quality hourly radiances and derived products over the continental United States and adjacent oceans for more than five years. The products derived from the ...

Timothy J. Schmit; Wayne F. Feltz; W. Paul Menzel; James Jung; Andrew P. Noel; James N. Heil; James P. Nelson III; Gary S. Wade

2002-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

GHIS—The GOES High-Resolution Interferometer Sounder  

Science Conference Proceedings (OSTI)

A high spectral resolution interferometer sounder (GHIS) has been designed for flight on future geostationary meteorological satellites. It incorporates the measurement principles of an aircraft prototype instrument, which has demonstrated the ...

W. L. Smith; H. E. Revercomb; H. B. Howell; H-L. Huang; R. O. Knuteson; E. W. Koenig; D. D. LaPorte; S. Silverman; L. A. Sromovsky; H. M. Woolf

1990-12-01T23:59:59.000Z

62

Estimation of Shelter Temperatures from Operational Satellite Sounder Data  

Science Conference Proceedings (OSTI)

As a first step in the development of a technique for estimating daily maximum and minimum shelter temperatures for agricultural monitoring, this study made use of operational satellite sounder data to estimate shelter temperature. Linear ...

F. A. Davis; J. D. Tarpley

1983-03-01T23:59:59.000Z

63

Regional Characteristics for Interpreting Inverted Echo Sounder (IES) Observations  

Science Conference Proceedings (OSTI)

Changes in round-trip acoustc travel time (?) measured between a bottom moored inverted echo sounder and the sea surface can be interpreted as changes in dynamic height (D) with suitable calibration information. The ?, D, and isotherm and ...

Zachariah R. Hallock

1987-06-01T23:59:59.000Z

64

Total Precipitable Water Measurements from GOES Sounder Derived Product Imagery  

Science Conference Proceedings (OSTI)

Statistics are compiled comparing calculations of total precipitable water (TPW) as given by GOES sounder derived product imagery (DPI) to that computed from radiosonde data for the 12-month period March 1998–February 1999. In order to ...

John F. Dostalek; Timothy J. Schmit

2001-10-01T23:59:59.000Z

65

CRC handbook of high resolution infrared laboratory spectra of atmospheric interest  

Science Conference Proceedings (OSTI)

The handbook presents spectra to be utilized for the detection and measurement of new constituents in the earth's atmosphere and to obtain data for common minor species with large gas amounts in the absorption cell (such as CH/sub 4/ and N/sub 2/O). These results can be applied in the identification of absorption features in atmospheric spectra determined over long atmospheric paths. The spectra were recorded with Fourier Transform Spectrometers which are more precise than grating spectrometers. Each molecule spectrum was plotted on two scales: a condensed scale covering the range from 75 to 300/cm in one frame, and an expanded view covering 20 or 10/cm per frame. Each plot contains the name of the molecule, chemical formula, the gas pressure, cell length, and estimated resolution of the spectrum.

Murcray, D.G.; Goldman, A.

1981-01-01T23:59:59.000Z

66

Analysis of Information Content of Infrared Sounding Radiances in Cloudy Conditions  

Science Conference Proceedings (OSTI)

Information content analysis of the Geostationary Operational Environmental Satellite (GOES) sounder observations in the infrared was conducted for use in satellite data assimilation. Information content is defined as a first-order response of ...

T. Koyama; T. Vukicevic; M. Sengupta; T. Vonder Haar; A. S. Jones

2006-12-01T23:59:59.000Z

67

The Development of an Airborne Infrared Interferometer for Meteorological Sounding Studies  

Science Conference Proceedings (OSTI)

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

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

1999-12-01T23:59:59.000Z

68

A TOVS Dataset for Study of the Tropical Atmosphere  

Science Conference Proceedings (OSTI)

Temperature and moisture data from the TIROS Operational Vertical Sounder (TOVS) archives are examined for applicability to studies of the tropical atmosphere on time scales ranging from intraseasonal to interannual. Comparisons with monthly mean ...

Siri Jodha Singh Khalsa; Ellen J. Steiner

1988-07-01T23:59:59.000Z

69

In-scene atmospheric correction of hyperspectral thermal infrared images with nadir, horizontal, and oblique view angles  

Science Conference Proceedings (OSTI)

Atmospheric corrections for hyperspectral thermal images acquired with nadir, horizontal, and oblique views have typically relied on atmospheric modelling software, such as Moderate Resolution Atmospheric Transmission MODTRAN, to estimate atmospheric ...

MattR. Smith; AlanR. Gillespie; Hugau Mizzon; LeeK. Balick; Juan Carlos Jiménez-Muńoz; JoseA. Sobrino

2013-05-01T23:59:59.000Z

70

Acoustical Measurement of Nonlinear Internal Waves Using the Inverted Echo Sounder  

Science Conference Proceedings (OSTI)

The performance of pressure sensor–equipped inverted echo sounders for monitoring nonlinear internal waves is examined. The inverted echo sounder measures the round-trip acoustic travel time from the sea floor to the sea surface and thus acquires ...

Qiang Li; David M. Farmer; Timothy F. Duda; Steve Ramp

2009-10-01T23:59:59.000Z

71

Spatial and Temporal Variations in Mesoscale Water Vapor Retrieved from TOVS Infrared Radiances in a Nocturnal Inversion Situation  

Science Conference Proceedings (OSTI)

Mesoscale moisture fields are retrieved from TOVS (TIROS Operational Vertical Sounder) infrared radiances from two polar-orbiting satellites. A special feature of the retrieval process is the determination of the surface skin temperature ...

Donald W. Hillger

1984-05-01T23:59:59.000Z

72

ARM - Site Instruments  

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

: Eastern North Atlantic Single installation AOS Aerosol Observing System Aerosols Single installation ASSIST Atmospheric Sounder Spectrometer for Infrared Spectral...

73

Calibrating Inverted Echo Sounders Equipped with Pressure Sensors  

Science Conference Proceedings (OSTI)

The addition of an accurate pressure sensor to the inverted echo sounder (IES) has allowed for the development of a new method for calibrating the IES’s acoustic travel-time record without the need for coincident conductivity–temperature–depth (...

Christopher S. Meinen; D. Randolph Watts

1998-12-01T23:59:59.000Z

74

An Autonomously Recording Inverted Echo Sounder: ARIES II  

Science Conference Proceedings (OSTI)

A self-contained instrument, the Autonomously Recording Inverted Echo Sounder (ARIES II), carrying two 250-kHz beam side-scan sonars and with the capacity to record sonar data sampled at 3.2 kHz for 168 h with the sonars operating with a pulse ...

S. A. Thorpe; M. J. Ulloa; D. Baldwin; A. J. Hall

1998-12-01T23:59:59.000Z

75

Evaluation of the GOES-R ABI LAP retrieval algorithm using the GOES-13 Sounder  

Science Conference Proceedings (OSTI)

A physical retrieval algorithm has been developed for deriving the legacy atmospheric profile (LAP) product from infrared radiances of the Advanced Baseline Imager (ABI) onboard the next generation Geostationary Operational Environmental Satellite ...

Yong-Keun Lee; Zhenglong Li; Jun Li; Timothy J. Schmit

76

Evaluation of SSMIS Upper Atmosphere Sounding Channels for High-Altitude Data Assimilation  

Science Conference Proceedings (OSTI)

Upper atmosphere sounding (UAS) channels of the Special Sensor Microwave Imager/Sounder (SSMIS) were assimilated using a high-altitude version of the Navy Global Environmental Model (NAVGEM) in order to investigate their potential for operational ...

Karl W. Hoppel; Stephen D. Eckermann; Lawrence Coy; Gerald E. Nedoluha; Douglas R. Allen; Steven D. Swadley; Nancy L. Baker

2013-10-01T23:59:59.000Z

77

A Study of Diurnal Variation of OLR from the GOES Sounder  

Science Conference Proceedings (OSTI)

A multispectral outgoing longwave radiation (OLR) estimation technique is applied to GOES Sounder data to study the diurnal cycle of OLR. OLR data collected from several regional areas over the continental United States and adjacent oceans during ...

Robert G. Ellingson; Mamoudou B. Ba

2003-01-01T23:59:59.000Z

78

Validation of a Technique for Estimating OLR with the GOES Sounder  

Science Conference Proceedings (OSTI)

In order to eventually use the capability of the Geostationary Operational Environmental Satellite (GOES) Sounder to capture the diurnal signal of outgoing longwave radiation (OLR), it is necessary to establish its instantaneous accuracy. Error ...

Mamoudou B. Ba; Robert G. Ellingson; A. Gruber

2003-01-01T23:59:59.000Z

79

Monitoring Gulf Stream Transport by Radar Altimeter and Inverted Echo Sounders  

Science Conference Proceedings (OSTI)

Profiles of the Gulf Stream sea surface height (SSH) from the Geosat altimeter were compared with thermocline depth measurements from inverted echo sounders (IES) for a period of about 19 months. The correlation between SSH anomalies and ...

Kathryn A. Kelly; D. Randolph Watts

1994-05-01T23:59:59.000Z

80

The Processing and Application of Inverted Echo Sounder Data from Drake Passage  

Science Conference Proceedings (OSTI)

Bottom pressure recorders (BPRs) have been deployed at Drake Passage (DP) to monitor changes in the volume transport of the Antarctic Circumpolar Current (ACC) through the passage. The use of inverted echo sounders (IESs) in assisting the ...

Michael P. Meredith; John M. Vassie; Robert Spencer; Karen J. Heywood

1997-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

AIRS: Improving Weather Forecasting and Providing New Data on Greenhouse Gases  

Science Conference Proceedings (OSTI)

The Atmospheric Infrared Sounder (AIRS) and its two companion microwave sounders, AMSU and HSB were launched into polar orbit onboard the NASA Aqua Satellite in May 2002. NASA required the sounding system to provide high-quality research data for ...

Moustafa T. Chahine; Thomas S. Pagano; Hartmut H. Aumann; Robert Atlas; Christopher Barnet; John Blaisdell; Luke Chen; Murty Divakarla; Eric J. Fetzer; Mitch Goldberg; Catherine Gautier; Stephanie Granger; Scott Hannon; Fredrick W. Irion; Ramesh Kakar; Eugenia Kalnay; Bjorn H. Lambrigtsen; Sung-Yung Lee; John Le Marshall; W. Wallace McMillan; Larry McMillin; Edward T. Olsen; Henry Revercomb; Philip Rosenkranz; William L. Smith; David Staelin; L. Larrabee Strow; Joel Susskind; David Tobin; Walter Wolf; Lihang Zhou

2006-07-01T23:59:59.000Z

82

PDFs of Tropical Tropospheric Humidity: Measurements and Theory  

Science Conference Proceedings (OSTI)

The spatial variations in the probability density functions (PDFs) of relative humidity (RH) in the tropical and subtropical troposphere are examined using observations from the Atmospheric Infrared Sounder (AIRS) and the Microwave Limb Sounder (...

Ju-Mee Ryoo; Takeru Igusa; Darryn W. Waugh

2009-06-01T23:59:59.000Z

83

Radiance and Cloud Analyses from GOES-VAS Dwell Soundings  

Science Conference Proceedings (OSTI)

An analysis technique for Geostationary Operational Environmental Satellite-VISSR (Visible and Infrared Spin Scan Radiometer) Atmospheric Sounder (GOES-VAS) sounder data was developed to extract cloud and clear radiance information. This ...

Donald P. Wylie; Harold M. Woolf

2000-09-01T23:59:59.000Z

84

High-Spectral- and High-Temporal-Resolution Infrared Measurements from Geostationary Orbit  

Science Conference Proceedings (OSTI)

The first of the next-generation series of the Geostationary Operational Environmental Satellite (GOES-R) is scheduled for launch in 2015. The new series of GOES will not have an infrared (IR) sounder dedicated to acquiring high-vertical-...

Timothy J. Schmit; Jun Li; Steven A. Ackerman; James J. Gurka

2009-11-01T23:59:59.000Z

85

OPTICAL-TO-NEAR-INFRARED SIMULTANEOUS OBSERVATIONS FOR THE HOT URANUS GJ3470b: A HINT OF A CLOUD-FREE ATMOSPHERE  

SciTech Connect

We present optical (g', R{sub c}, and I{sub c}) to near-infrared (J) simultaneous photometric observations for a primary transit of GJ3470b, a Uranus-mass transiting planet around a nearby M dwarf, by using the 50 cm MITSuME telescope and the 188 cm telescope, both at the Okayama Astrophysical Observatory. From these data, we derive the planetary mass, radius, and density as 14.1 {+-} 1.3 M{sub Circled-Plus }, 4.32{sup +0.21}{sub -0.10} R{sub Circled-Plus }, and 0.94 {+-} 0.12 g cm{sup -3}, respectively, thus confirming the low density that was reported by Demory et al. based on the Spitzer/IRAC 4.5 {mu}m photometry (0.72{sup +0.13}{sub -0.12} g cm{sup -3}). Although the planetary radius is about 10% smaller than that reported by Demory et al., this difference does not alter their conclusion that the planet possesses a hydrogen-rich envelope whose mass is approximately 10% of the planetary total mass. On the other hand, we find that the planet-to-star radius ratio (R{sub p} /R{sub s} ) in the J band (0.07577{sup +0.00072}{sub -0.00075}) is smaller than that in the I{sub c} (0.0802 {+-} 0.0013) and 4.5 {mu}m (0.07806{sup +0.00052}{sub -0.00054}) bands by 5.8% {+-} 2.0% and 2.9% {+-} 1.1%, respectively. A plausible explanation for the differences is that the planetary atmospheric opacity varies with wavelength due to absorption and/or scattering by atmospheric molecules. Although the significance of the observed R{sub p} /R{sub s} variations is low, if confirmed, this fact would suggest that GJ3470b does not have a thick cloud layer in the atmosphere. This property would offer a wealth of opportunity for future transmission-spectroscopic observations of this planet to search for certain molecular features, such as H{sub 2}O, CH{sub 4}, and CO, without being prevented by clouds.

Fukui, Akihiko; Yanagisawa, Kenshi; Kuroda, Daisuke; Shimizu, Yasuhiro; Izumiura, Hideyuki [Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, Asakuchi, Okayama 719-0232 (Japan); Narita, Norio; Takahashi, Yasuhiro H.; Kawauchi, Kiyoe; Nagayama, Shogo [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Kurosaki, Kenji; Ikoma, Masahiro [Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033 (Japan); Ohnuki, Hiroshi [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan); Onitsuka, Masahiro; Suenaga, Takuya [The Graduate University for Advanced Studies, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Hirano, Teruyuki [Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Ohta, Kouji [Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake, Sakyo, Kyoto 606-8502 (Japan); Yoshida, Michitoshi [Hiroshima Astrophysical Science Center, Hiroshima University 1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Kawai, Nobuyuki, E-mail: afukui@oao.nao.ac.jp [Department of Physics, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro, Tokyo 152-8551 (Japan)

2013-06-20T23:59:59.000Z

86

ARM - Instrument - assist  

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

govInstrumentsassist govInstrumentsassist Documentation ASSIST : Instrument Mentor Monthly Summary (IMMS) reports ASSIST : 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 : Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST) Instrument Categories Radiometric The Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST), like the AERI, measures infrared spectral zenith radiance at high spectral resolution. Output Datastreams assistch1 : Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST): channel 1 data assistch2 : Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST): channel 2 data

87

Boundary-Layer Structure Over Tropical Oceans from TIROS-N Infrared Sounder Observations  

Science Conference Proceedings (OSTI)

It has been shown by simulation studies that the 13.4, 11.1 and 8.3 ?m spectral radiances are sensitive to the moisture distribution within the boundary layer. If the distribution gets significantly perturbed due to some stratification present in ...

Vijay K. Agarwal; A. V. Ashajayanthi

1983-07-01T23:59:59.000Z

88

Satellite Thermal Infrared and Inverted Echo Sounder Determinations of the Gulf Stream Northern Edge  

Science Conference Proceedings (OSTI)

The northern edge of the Gulf Stream off Cape Hatteras, North Carolina was located in 155 AVHRR-derived maps of sea surface temperature (SST) using five different methods. One method was subjective location of the northern edge by an analyst; the ...

Peter Cornillon; Randolph Watts

1987-12-01T23:59:59.000Z

89

Atmospheric Emitted Radiance Interferometer (AERI) Archived Data at the University of Wisconsin Space Science and Engineering Center (SSEC)  

DOE Data Explorer (OSTI)

The AERI instrument is an advanced version of the high spectral resolution interferometer sounder (HIS) designed and fabricated at the University of Wisconsin (Revercomb et al. 1988) to measure upwelling infrared radiances from an aircraft. The AERI is a fully automated ground-based passive infrared interferometer that measures downwelling atmospheric radiance from 3.3 - 18.2 mm (550 - 3000 cm-1) at less than 10-minute temporal resolution with a spectral resolution of one wavenumber. It has been used in DOEĆs Atmospheric Radiation Measurement (ARM) program. Much of the data available here at the Cooperative Institute for Meteorological Satellite Studies (CIMSS), an institute within the University of Wisconsin’s Space Science and Engineering Center, may also be available in the ARM Archive. On this website, data and images from six different field experiments are available, along with AERIPLUS realtime data for the Madison, Wisconsin location. Realtime data includes temperature and water vapor time-height cross sections, SKEWT diagrams, convective stability indices, and displays from a rooftop Lidar instrument. The field experiments took place in Oaklahoma and Wisconsin with the AERI prototype.

90

Ultraviolet versus infrared: Effects of ablation laser wavelength on the expansion of laser-induced plasma into one-atmosphere argon gas  

SciTech Connect

Laser-induced plasma from an aluminum target in one-atmosphere argon background has been investigated with ablation using nanosecond ultraviolet (UV: 355 nm) or infrared (IR: 1064 nm) laser pulses. Time- and space-resolved emission spectroscopy was used as a diagnostics tool to have access to the plasma parameters during its propagation into the background, such as optical emission intensity, electron density, and temperature. The specific feature of nanosecond laser ablation is that the pulse duration is significantly longer than the initiation time of the plasma. Laser-supported absorption wave due to post-ablation absorption of the laser radiation by the vapor plume and the shocked background gas plays a dominant role in the propagation and subsequently the behavior of the plasma. We demonstrate that the difference in absorption rate between UV and IR radiations leads to different propagation behaviors of the plasma produced with these radiations. The consequence is that higher electron density and temperature are observed for UV ablation. While for IR ablation, the plasma is found with lower electron density and temperature in a larger and more homogenous axial profile. The difference is also that for UV ablation, the background gas is principally evacuated by the expansion of the vapor plume as predicted by the standard piston model. While for IR ablation, the background gas is effectively mixed to the ejected vapor at least hundreds of nanoseconds after the initiation of the plasma. Our observations suggest a description by laser-supported combustion wave for the propagation of the plasma produced by UV laser, while that by laser-supported detonation wave for the propagation of the plasma produced by IR laser. Finally, practical consequences of specific expansion behavior for UV or IR ablation are discussed in terms of analytical performance promised by corresponding plasmas for application with laser-induced breakdown spectroscopy.

Ma Qianli; Motto-Ros, Vincent; Laye, Fabrice; Yu Jin [Universite de Lyon, F-69622, Lyon, France, Universite Lyon 1, Villeurbanne, CNRS, UMR5579, LASIM (France); Lei Wenqi; Bai Xueshi; Zheng Lijuan; Zeng Heping [State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai (China)

2012-03-01T23:59:59.000Z

91

3D atmospheric modeling based on MODTRAN4  

Science Conference Proceedings (OSTI)

All the factors of atmospheric environment that influence the transmission of infrared radiation were analyzed in detail in the paper. Taking horizontally varying atmospheric property into consideration, a 3D model of atmospheric transmission of infrared ... Keywords: MODTRAN4, infrared radiation, model, path radiation, ratio of atmospheric transmission, simulation, single scatter solar radiation

Ge Li; Zhifeng Lu; Gang Guo; Kedi Huang

2008-06-01T23:59:59.000Z

92

A High-Power, Dual-Frequency Monostatic Acoustic Sounder for Studying the Atmospheric Boundary Layer  

Science Conference Proceedings (OSTI)

Microwave propagation conditions in the lower marine troposphere are evaluated using gradients of radio refractivity profiles. An inexpensive, weather-resistant system for Continuous monitoring of radio refractivity conditions in the lower marine ...

Steven M. Babin; Robert E. Miller; John R. Rowland

1993-08-01T23:59:59.000Z

93

An Evaluation and Comparison of Vertical Profile Data from the VISSR Atmospheric Sounder (VAS)  

Science Conference Proceedings (OSTI)

Statistical procedures are used to compare vertical profiles of temperature and moisture derived from VAS with three different algorithms to those of corresponding rawinsonde measurements for a clear-cold environment. To account for time and ...

Gary J. Jedlovec

1985-12-01T23:59:59.000Z

94

Observing Groups of Solitary Internal Waves and Turbulence with BATFISH and Echo-Sounder  

Science Conference Proceedings (OSTI)

Acoustic backscatter from a 200 kHz echo-sounder and temperature fine-structure from a towed CTD (BAT-FISH) am compared prior to and during the passage of a group of large-amplitude internal waves on the continental shelf off Nova Scotia. The ...

H. Sandstrom; J. A. Elliot; N. A. Cchrane

1989-07-01T23:59:59.000Z

95

Retrieval of Cloud Ice Water Path from Special Sensor Microwave Imager/Sounder (SSMIS)  

Science Conference Proceedings (OSTI)

The Special Sensor Microwave Imager/Sounder (SSMIS) aboard the Defense Meteorological Satellite Program F-16 spacecraft measures the Earth-emitted radiation at frequencies from 19 to 183 GHz. From its high-frequency channels at 91 and 150 GHz, ...

Ninghai Sun; Fuzhong Weng

2012-02-01T23:59:59.000Z

96

Using the Inverted Echo Sounder to Measure Vertical Profiles of Gulf Stream Temperature and Geostrophic Velocity  

Science Conference Proceedings (OSTI)

The methodology for converting the travel time measurement of the inverted echo sounder (IES) into an amplitude of the first baroclinic dynamical mode, A1, is presented. For a Gulf Stream IES record the so-generated A1(t) time series is used to ...

Robert S. Pickart; D. Randolph Watts

1990-02-01T23:59:59.000Z

97

Observations of Inertia-Gravity Waves in the Atlantic from Inverted Echo Sounders during FGGE  

Science Conference Proceedings (OSTI)

The study is based on observations from inverted echo sounders anchored near the equator in the western Atlantic Ocean. It appears to be a good method of detecting inertia-gravity waves with large vertical scale. The spectral analysis of the ...

Silvia Garzoli; Eli Joel Katz

1981-11-01T23:59:59.000Z

98

A NEW SYNTHETIC LIBRARY OF THE NEAR-INFRARED Ca II TRIPLET INDICES. I. INDEX DEFINITION, CALIBRATION, AND RELATIONS WITH STELLAR ATMOSPHERIC PARAMETERS  

Science Conference Proceedings (OSTI)

Adopting the SPECTRUM package, which is a stellar spectral synthesis program, we have synthesized a comprehensive set of 2890 near-infrared (NIR) synthetic spectra with a resolution and wavelength sampling similar to the Sloan Digital Sky Survey (SDSS) and the forthcoming Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectra. During the synthesis, we applied the 'New grids of ATLAS9 Model Atmosphere' to develop a grid of local thermodynamic equilibrium model atmospheres for effective temperatures (T{sub eff}) ranging from 3500 to 7500 K, for surface gravities (log g) from 0.5 to 5.0 dex, for metallicities ([Fe/H]) from -4.0 to 0.5 dex, and for solar ([{alpha}/Fe] = 0.0 dex) and non-solar ([{alpha}/Fe] = +0.4 dex) abundances. This synthetic stellar library is composed of 1350 solar scaled abundance (SSA) and 1530 non-solar scaled abundance (NSSA) spectra, grounding on which we have defined a new set of NIR Ca II triplet indices and an index CaT as the sum of the three. These defined indices were automatically measured on every spectrum of the synthetic stellar library and calibrated with the indices computed on the observational spectra from the INDO-U.S. stellar library. In order to check the effect of {alpha}-element enhancement on the so-defined Ca II indices, we compared indices measured on the SSA spectra with those on the NSSA ones at the same trine of stellar parameters (T{sub eff}, log g, [Fe/H]); luckily, little influences of {alpha}-element enhancement were found. Furthermore, comparisons of our synthetic indices with the observational ones from measurements on the INDO-U.S. stellar library, the SDSS-DR7 and SDSS-DR8 spectroscopic survey are presented, respectively, for dwarfs and giants in specific. For dwarfs, our synthetic indices could well reproduce the behaviors of the observational indices versus stellar parameters, which verifies the validity of our index definitions for dwarfs. For giants, the consistency between our synthetic indices and the observational ones does not appear to be as good. However, a new synthetic library of NIR Ca II indices has been founded for deeper studies on the NIR wave band of stellar spectra, and this library is particularly appropriate for the SDSS and the forthcoming LAMOST stellar spectra. We have regressed the strength of the CaT index as a function of stellar parameters for both dwarfs and giants after a series of experimental investigations into relations of the indices with stellar parameters. For dwarfs, log g has little effect on the indices, while [Fe/H] and T{sub eff} play a role together. The leading factor is probably [Fe/H], which changes the strength of the indices by a positive trend. For giants, log g starts to influence the strength of the indices by a negative trend for the metal-poor, and even impact deeply for the metal-rich; besides, [Fe/H] and T{sub eff} still matter. In addition, we briefly discussed the major differences between our Ca II triplet indices and the CaHK doublet indices. Ultimately, a supplemental experiment was carried out to show that spectral noises do have effects on our set of NIR Ca II indices. However, the influence is not weak enough to be ignored if the signal-to-noise ratio falls below 20.

Du, W.; Luo, A. L.; Zhao, Y. H., E-mail: wdu@nao.cas.cn, E-mail: lal@nao.cas.cn [National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2012-02-15T23:59:59.000Z

99

Evaluation of AIRS cloud thermodynamic phase determination with CALIPSO  

Science Conference Proceedings (OSTI)

The Atmospheric Infrared Sounder (AIRS) infrared-based cloud thermodynamic phase retrievals are evaluated using the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) cloud thermodynamic phase. The AIRS cloud phase is ...

Hongchun Jin; Shaima L. Nasiri

100

Calibration of the Improved Stratospheric and Mesospheric Sounder. Part II: Optical Alignment, Spatial, and Pressure Modulator Calibrations  

Science Conference Proceedings (OSTI)

In Part I the Improved Stratospheric and Mesospheric Sounder instrument and its calibration facility were described, and the results of the radiometric and spectral calibrations were presented. In Part II the remaining prelaunch calibrations are ...

C. W. P. Palmer; P. Venters; R. J. Knight; J. Ballard; T. J. Nightingale; P. E. Morris

1997-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

An Acoustic Telemetry System Implemented for Real-Time Monitoring of the Gulf Stream with Inverted Echo Sounders  

Science Conference Proceedings (OSTI)

From August 1989 until August 1990, a simple acoustic telemetry system was used for obtaining real-time data from four inverted echo sounders (IESs) deployed in the Synoptic Ocean Prediction Experiment (SYNOP) inlet array in the Gulf Stream east ...

Stephan D. Howden; D. Randolph Watts; Karen L. Tracey; H. Thomas Rossby

1994-04-01T23:59:59.000Z

102

Solar Infrared Photometer  

Science Conference Proceedings (OSTI)

A sun photometer which operates at five wavelengths in the near infrared between 1.0 and 4.0 ?m has been developed. The instrument is a manually operated, fitter wheel design and has principal applications for atmospheric aerosol studies. The ...

J. D. Spinhirne; M. G. Strange; L. R. Blaine

1985-06-01T23:59:59.000Z

103

The Infrared Sky  

E-Print Network (OSTI)

The infrared sky from space is the sum of a cosmic signal from galaxies, quasars, and perhaps more exotic sources; and foregrounds from the Milky Way and from the Solar System. At a distance of 1 AU from the Sun, the foreground from interplanetary dust is very bright between 5 and 100 microns, but ``very bright'' is still several million times fainter than the background produced by ground-based telescopes. In the near infrared 1-2.2 micron range the space infrared sky is a thousand times fainter than the OH nightglow from the Earth's atmosphere. As a result of these advantages, wide-field imaging from space in the infrared can be an incredibly sensitive method to study the Universe.

E. L. Wright

2004-09-03T23:59:59.000Z

104

Assessment of the Quality of MODIS Cloud Products from Radiance Simulations  

Science Conference Proceedings (OSTI)

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

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

2009-08-01T23:59:59.000Z

105

Optical-to-Near-Infrared Simultaneous Observations for the Hot Uranus GJ3470b: A Hint for Cloud-free Atmosphere  

E-Print Network (OSTI)

We present optical (g', R_c, and I_c) to near-infrared (J) simultaneous photometric observations for a primary transit of GJ3470b, the second lowest-mass planet among transiting planets around nearby M dwarfs, by using the 50-cm MITSuME telescope and the 188-cm telescope both at Okayama Astrophysical Observatory. From these data, we derive the planetary mass, radius, and density as 14.1 \\pm 1.3 M_earth, 4.32^{+0.21}_{-0.10} R_earth, and 0.94 \\pm 0.12 g cm^{-3}, respectively, thus confirming the low density that was reported by Demory et al. based on the Spitzer/IRAC 4.5-micron photometry (0.72^{+0.13}_{-0.12} g cm^{-3}). Although the planetary radius is about 10% smaller than that reported by Demory et al., this difference does not alter their conclusion that the planet possesses a hydrogen-rich envelope whose mass is approximately 10% of the planetary total mass. On the other hand, we find that the planet-to-star radius ratio (R_p/R_s) in the J band (0.07577^{+0.00072}_{-0.00075}) is smaller than that in the...

Fukui, Akihiko; Kurosaki, Kenji; Ikoma, Masahiro; Yanagisawa, Kenshi; Kuroda, Daisuke; Shimizu, Yasuhiro; Takahashi, Yasuhiro H; Ohnuki, Hiroshi; Onitsuka, Masahiro; Hirano, Teruyuki; Suenaga, Takuya; Kawauchi, Kiyoe; Nagayama, Shogo; Ohta, Kouji; Yoshida, Michitoshi; Kawai, Nobuyuki; Izumiura, Hideyuki

2013-01-01T23:59:59.000Z

106

Parameterization of Outgoing Infrared Radiation Derived from Detailed Radiative Calculations  

Science Conference Proceedings (OSTI)

State-of-the-art radiative transfer models can calculate outgoing infrared (IR) irradiance at the top of the atmosphere (F) to an accuracy suitable for climate modeling given the proper atmospheric profiles of temperature and absorbing gases and ...

Starley L. Thompson; Stephen G. Warren

1982-12-01T23:59:59.000Z

107

Vertical Moist Thermodynamic Structure and Spatial–Temporal Evolution of the MJO in AIRS Observations  

Science Conference Proceedings (OSTI)

The atmospheric moisture and temperature profiles from the Atmospheric Infrared Sounder (AIRS)/Advanced Microwave Sounding Unit on the NASA Aqua mission, in combination with the precipitation from the Tropical Rainfall Measuring Mission (TRMM), ...

Baijun Tian; Duane E. Waliser; Eric J. Fetzer; Bjorn H. Lambrigtsen; Yuk L. Yung; Bin Wang

2006-10-01T23:59:59.000Z

108

Using an Army of Inverted Echo Sounders to Measure Dynamic Height and Geostrophic Current in the North Pacific Subtropical Gyre  

Science Conference Proceedings (OSTI)

In 1991, an array of five inverted echo sounders (IESs) was deployed about 100 km north of the island of Oahu, Hawaii, as part of the World Ocean Circulation Experiment deep-water station. IESs record the round-trip acoustic travel time from the ...

Stephen M. Chiswell

1994-10-01T23:59:59.000Z

109

Session Z: Pb-Salt Infrared Materials  

Science Conference Proceedings (OSTI)

In order to demonstrate the advantages of this light coupling scheme, a two-color C-QWIP covering the two infrared atmospheric windows as well as a relatively ...

110

Climatological Diurnal Cycles in Clear-Sky Brightness Temperatures from the High-Resolution Infrared Radiation Sounder (HIRS)  

Science Conference Proceedings (OSTI)

A climatology of the diurnal cycles of HIRS clear-sky brightness temperatures was developed based on measurements over the period 2002–07. This was done by fitting a Fourier series to monthly gridded brightness temperatures of HIRS channels 1–12. ...

Anders V. Lindfors; Ian A. Mackenzie; Simon F. B. Tett; Lei Shi

2011-10-01T23:59:59.000Z

111

ARM - Publications: Science Team Meeting Documents: Validation of infrared  

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

Validation of infrared cloud radiative transfer simulations and spectral Validation of infrared cloud radiative transfer simulations and spectral cloud properties retrievals using S-HIS, AERI and HSRL measurements from M-PACE Holz, Robert University of Wisconsin, CIMMS DeSlover, Daniel University of Wisconsin Revercomb, Henry University Of Wisconsin-Madison Tobin, David University of Wisconsin-Madison Knuteson, Robert University Of Wisconsin Turner, David Pacific Northwest National Laboratory Eloranta, Edwin University of Wisconsin As part of the Mixed-Phase Arctic Cloud Experiment (M-PACE) the Scanning High spectral resolution Interferometer Sounder (S-HIS) flew on the Proteus high altitude aircraft with the ARM-UAV instrumentation. The University of North Dakota Cessna Citation capable of cloud situ measurements was coordinated with the Proteus to obtain coincident down looking and situ

112

Atmospheric Aerosols  

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

measuring equipment Atmospheric Aerosols Atmospheric aerosol research at Berkeley Lab seeks to understand the air quality and climate impacts of particles in the atmosphere. On...

113

Measurements of N2O by the UARS Improved Stratospheric and Mesospheric Sounder during the Early Northern Winter 1991/92  

Science Conference Proceedings (OSTI)

Measurements of stratospheric nitrous oxide made by the Improved Stratospheric and Mesospheric Sounder (ISAMS) during the period 28 October 1991–18 January 1992 are presented. The data are consistent with the dynamical fields at the time, and are ...

S. L. Ruth; J. J. Remedios; B. N. Lawrence; F. W. Taylor

1994-10-01T23:59:59.000Z

114

Clouds as Seen by Satellite Sounders (3I) and Imagers (ISCCP). Part II: A New Approach for Cloud Parameter Determination in the 3I Algorithms  

Science Conference Proceedings (OSTI)

First comparisons of improved initialization inversion (3I) cloud parameters determined from TIROS-N Operational Vertical Sounder observations with time–space-collocated clouds from the recently reprocessed International Satellite Cloud ...

C. J. Stubenrauch; A. Chédin; R. Armante; N. A. Scott

1999-08-01T23:59:59.000Z

115

A Comparison of Total Column Ozone Values Derived from the Global Ozone Monitoring Experiment (GOME), the Tiros Operational Vertical Sounder (TOVS), and the Total Ozone Mapping Spectrometer (TOMS)  

Science Conference Proceedings (OSTI)

A comparison of total column ozone data retrieved from the Global Ozone Monitoring Experiment (GOME), the Tiros Operational Vertical Sounder (TOVS), and the Total Ozone Mapping Spectrometer (TOMS) for the years 1996, 1997, 1998, and 1999 is ...

Gary K. Corlett; Paul S. Monks

2001-05-01T23:59:59.000Z

116

Atmospheric Emitted Radiance Interferometer. Part I: Instrument Design  

Science Conference Proceedings (OSTI)

A ground-based Fourier transform spectrometer has been developed to measure the atmospheric downwelling infrared radiance spectrum at the earth's surface with high absolute accuracy. The Atmospheric Emitted Radiance Interferometer (AERI) ...

R. O. Knuteson; H. E. Revercomb; F. A. Best; N. C. Ciganovich; R. G. Dedecker; T. P. Dirkx; S. C. Ellington; W. F. Feltz; R. K. Garcia; H. B. Howell; W. L. Smith; J. F. Short; D. C. Tobin

2004-12-01T23:59:59.000Z

117

An Instrument for the Measurement of Precipitation Rate by Near-Infrared Extinction  

Science Conference Proceedings (OSTI)

The design, construction and performance of a near-infrared atmospheric precipitation sensing device is described. An infrared light emitting diode was used to generate a sensing beam of 0.92 ?m wavelength. The collimated sensing beam traversed ...

F. J. Nedvidek; Z. Kucerovsky; E. Brannen

1983-09-01T23:59:59.000Z

118

Clear Skies S. A. Clough Atmospheric and Environmental Research, Inc.  

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

S. A. Clough S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, MA 02139 The objective of this research effort is to develop radiative transfer models that are consistent with Atmospheric Radiation Measurement (ARM) Program spectral radiance measurements for clear and cloudy atmospheres. Our approach is to develop the model physics and related databases with a line-by-line model in the context of available spectral radiance measurements. The line-by- line mode! then functions as an intermediate standard to both develop and validate rapid radiative transfer models appropriate to GCM applications. consistent with downlooking data taken with the high spectral resolution interferometer sounder (HIS) (Smith et al. 1983) from 20 km and with simultaneous data taken

119

Atmospheric Aerosols  

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

Tom Kirchstetter with aerosol measurement instrument Atmospheric Aerosols Atmospheric aerosol research at LBNL seeks to understand the air quality and climate impacts of particles...

120

The Impact of Conventional Surface Data upon VAS Regression Retrievals in the Lower Troposphere  

Science Conference Proceedings (OSTI)

Surface temperature and dewpoint reports are added to the infrared radiances from the VISSR Atmospheric Sounder (VAS) in order to improve the retrieval of temperature and moisture profiles in the lower troposphere. The conventional (airways) ...

Tay-How Lee; Dennis Chesters; Anthony Mostek

1983-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

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

122

Assimilating AIRS Temperature and Mixing Ratio Profiles Using an Ensemble Kalman Filter Approach for Convective-Scale Forecasts  

Science Conference Proceedings (OSTI)

One satellite data product that has received great interest in the numerical weather prediction community is the temperature and mixing ratio profiles derived from the Atmospheric Infrared Sounder (AIRS) instrument on board the Aqua satellite. ...

Thomas A. Jones; David J. Stensrud

2012-06-01T23:59:59.000Z

123

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

Science Conference Proceedings (OSTI)

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

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

2004-11-01T23:59:59.000Z

124

Nadir Correction of AIRS Radiances  

Science Conference Proceedings (OSTI)

A statistical method to correct for the limb effect in off-nadir Atmospheric Infrared Sounder (AIRS) channel radiances is described, using the channel radiance itself and principal components (PCs) of the other channel radiances to account for ...

Chee-Kiat Teo; Tieh-Yong Koh

2010-03-01T23:59:59.000Z

125

Influence of Stratospheric Sudden Warming on AIRS Midtropospheric CO2  

Science Conference Proceedings (OSTI)

Midtropospheric CO2 retrievals from the Atmospheric Infrared Sounder (AIRS) were used to explore the influence of stratospheric sudden warming (SSW) on CO2 in the middle to upper troposphere. To choose the SSW events that had strong coupling ...

Xun Jiang; Jingqian Wang; Edward T. Olsen; Thomas Pagano; Luke L. Chen; Yuk L. Yung

2013-08-01T23:59:59.000Z

126

AIRS Subpixel Cloud Characterization Using MODIS Cloud Products  

Science Conference Proceedings (OSTI)

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

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

2004-08-01T23:59:59.000Z

127

Retrieval of Cloud Microphysical Properties from MODIS and AIRS  

Science Conference Proceedings (OSTI)

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

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

2005-10-01T23:59:59.000Z

128

Upper-Tropospheric Water Vapor from UARS MLS  

Science Conference Proceedings (OSTI)

Initial results of upper-tropospheric water vapor obtained from the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite (UARS) are presented. MLS is less affected by clouds than infrared or visible techniques, and the UARS ...

W. G. Read; J. W. Waters; D. A. Flower; L. Froidevaux; R. F. Jarnot; D. L. Hartmann; R. S. Harwood; R. B. Rood

1995-12-01T23:59:59.000Z

129

Univariate and Multivariate Assimilation of AIRS Humidity Retrievals with the Local Ensemble Transform Kalman Filter  

Science Conference Proceedings (OSTI)

This study uses the local ensemble transform Kalman filter to assimilate Atmospheric Infrared Sounder (AIRS) specific humidity retrievals with pseudo relative humidity (pseudo-RH) as the observation variable. Three approaches are tested: (i) ...

Junjie Liu; Hong Li; Eugenia Kalnay; Eric J. Kostelich; Istvan Szunyogh

2009-11-01T23:59:59.000Z

130

Radiance Comparisons of MODIS and AIRS Using Spatial Response Information  

Science Conference Proceedings (OSTI)

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

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

2010-08-01T23:59:59.000Z

131

Observed and Simulated Upper-Tropospheric Water Vapor Feedback  

Science Conference Proceedings (OSTI)

Satellite measurements from the Atmospheric Infrared Sounder (AIRS) in the upper troposphere over 4.5 yr are used to assess the covariation of upper-tropospheric humidity and temperature with surface temperatures, which can be used to constrain ...

A. Gettelman; Q. Fu

2008-07-01T23:59:59.000Z

132

Simulation Experiments for Testing the Assimilation of Geostationary Satellite Temperature Retrievals into a Numerical Prediction Model  

Science Conference Proceedings (OSTI)

Recent diagnostic studies using retrievals from the Visible Infrared Spin-Scan Radiometer (VISSR) Atmospheric Sounder (VAS) indicate that there are limitations of gestationary satellite sounding data (poor vertical resolution of temperature and ...

Tzvi Gal-Chen; Brian D. Schmidt; Louis W. Uccellini

1986-07-01T23:59:59.000Z

133

Physically Retrieving Cloud and Thermodynamic Parameters from Ultraspectral IR Measurements  

Science Conference Proceedings (OSTI)

A physical inversion scheme has been developed dealing with cloudy as well as cloud-free radiance observed with ultraspectral infrared sounders to simultaneously retrieve surface, atmospheric thermodynamic, and cloud microphysical parameters. A ...

Daniel K. Zhou; William L. Smith Sr.; Xu Liu; Allen M. Larar; Stephen A. Mango; Hung-Lung Huang

2007-03-01T23:59:59.000Z

134

A Comparison of Ground and Satellite Observations of Cloud Cover  

Science Conference Proceedings (OSTI)

A processing scheme that determines cloud height and amount based on radiances from the Visible Infrared Spin Scan Radiometer Atmospheric Sounder (VAS) using a CO2 absorption technique has been installed on the National Environmental Satellite ...

Anthony J. Schreiner; Kathy I. Strabala; David A. Unger; W. Paul Menzel; Gary P. Ellrod; Jackson L. Pellet

1993-10-01T23:59:59.000Z

135

A Study of Satellite-derived Moisture with Emphasis on the Gulf of Mexico  

Science Conference Proceedings (OSTI)

Visible-Infrared Spin Scan Radiometer (VISSR) Atmospheric Sounder (VAS) moisture retrievals are compared to the National Meteorological Center Regional Analysis and Forecast System (RAFS) 12-h forecast and to 1200 UTC rawinsondes over the United ...

Anthony J. Schreiner; Christopher M. Hayden; Cecil A. Paris

1992-07-01T23:59:59.000Z

136

A Technique for Deriving Column-integrated Water Content Using VAS Split-Window Data  

Science Conference Proceedings (OSTI)

An algorithm is examined that uses Visible?Infrared Spin Scan Radiometer (VISSR) Atmospheric Sounder (VAS) 11- and 12-µm (split-window) data to derive column-integrated water content (IWC) at mesoscale resolution. The algorithm is physically ...

Anthony R. Guillory; Gary J. Jedlovec; Henry E. Fuelberg

1993-07-01T23:59:59.000Z

137

Links between Snow Cover, Surface Skin Temperature, and Rainfall Variability in the North American Monsoon System  

Science Conference Proceedings (OSTI)

The influence of land–atmosphere interactions on the variability of the North American monsoon system (NAMS) is investigated using the Television Infrared Observation Satellite (TIROS) Operational Vertical Sounder (TOVS) Pathfinder, the Climate ...

Toshi Matsui; Venkat Lakshmi; Eric Small

2003-06-01T23:59:59.000Z

138

Eight Years of High Cloud Statistics Using HIRS  

Science Conference Proceedings (OSTI)

Over the last 8 yr frequency and location of cloud observations have been compiled using multispectral High Resolution Infrared Radiation Sounder (HIRS) data from the National Oceanic and Atmospheric Administration polar-orbiting satellites; this ...

Donald P. Wylie; W. Paul Menzel

1999-01-01T23:59:59.000Z

139

Infrared retina  

DOE Patents (OSTI)

Exemplary embodiments provide an infrared (IR) retinal system and method for making and using the IR retinal system. The IR retinal system can include adaptive sensor elements, whose properties including, e.g., spectral response, signal-to-noise ratio, polarization, or amplitude can be tailored at pixel level by changing the applied bias voltage across the detector. "Color" imagery can be obtained from the IR retinal system by using a single focal plane array. The IR sensor elements can be spectrally, spatially and temporally adaptive using quantum-confined transitions in nanoscale quantum dots. The IR sensor elements can be used as building blocks of an infrared retina, similar to cones of human retina, and can be designed to work in the long-wave infrared portion of the electromagnetic spectrum ranging from about 8 .mu.m to about 12 .mu.m as well as the mid-wave portion ranging from about 3 .mu.m to about 5 .mu.m.

Krishna, Sanjay (Albuquerque, NM); Hayat, Majeed M. (Albuquerque, NM); Tyo, J. Scott (Tucson, AZ); Jang, Woo-Yong (Albuquerque, NM)

2011-12-06T23:59:59.000Z

140

Three-dimensional molecular imaging by infrared laser ablation electrospray ionization mass spectrometry  

DOE Patents (OSTI)

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation with electrospray ionization (ESI).

Vertes, Akos; Nemes, Peter

2013-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Three-dimensional molecular imaging by infrared laser ablation electrospray ionization mass spectrometry  

DOE Patents (OSTI)

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation with electrospray ionization (ESI).

Vertes, Akos; Nemes, Peter

2012-10-30T23:59:59.000Z

142

Mesoscale Cloud State Estimation from Visible and Infrared Satellite Radiances  

Science Conference Proceedings (OSTI)

This study focuses on cloudy atmosphere state estimation from high-resolution visible and infrared satellite remote sensing measurements and a mesoscale model with explicit cloud prediction. The cloud state is defined as 3D spatially distributed ...

T. Vukicevic; T. Greenwald; M. Zupanski; D. Zupanski; T. Vonder Haar; A. S. Jones

2004-12-01T23:59:59.000Z

143

Radiative Properties of Cirrus Clouds in the Infrared Region  

Science Conference Proceedings (OSTI)

A multiple-scattering radiative transfer model is employed to evaluate the 11 ?m and the broad-band infrared (IR) fluxes, cooling rates and emittances in model cirrus clouds for a number of standard vertical atmospheric profiles of temperature ...

Graeme L. Stephens

1980-02-01T23:59:59.000Z

144

The NCAR Airborne Infrared Lidar System: Status and Applications  

Science Conference Proceedings (OSTI)

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

R. L. Schwiesow; M. P. Spowart

1996-02-01T23:59:59.000Z

145

Coupling of Horizontal, Vertical, and Temporal Resolving Power of a Satellite Temperature Sounder  

Science Conference Proceedings (OSTI)

Satellite sensor optical systems now provide scan spots that are reasonably small and closely spaced compared with the horizontal scales of atmospheric variability that meteorologists might like to infer. Furthermore, geo-synchronous deployment ...

Owen E. Thompson; Yu-Tai Hou

1990-06-01T23:59:59.000Z

146

Finestructure of Elevated Stable Layers Observed by Sounder and In Situ Tower Sensors  

Science Conference Proceedings (OSTI)

A study of the finestructure within elevated stable atmospheric layers is described. The observational program consisted of measurements made with fast-response turbulence sensors on a carriage traversing a 300 m tower and comparison of the ...

E. E. Gossard; J. E. Gaynor; R. J. Zamora; W. D. Neff

1985-10-01T23:59:59.000Z

147

On the Sounding Range of a 1-m Wavelength Radio Acoustic Sounder  

Science Conference Proceedings (OSTI)

The sounding range of a RASS (Radio Acoustic Sounding System) for remote measurement of the atmospheric thermal profile is determined both by the structural peculiarities of the system (wavelength, size of antennas, acoustic and radar power, etc.)...

G. Bonino; P. Trivero; G. Elisei; A. Marzorati

1989-10-01T23:59:59.000Z

148

A High-Accuracy Multiwavelength Radiometer for In Situ Measurements in the Thermal Infrared. Part I: Characterization of the Instrument  

Science Conference Proceedings (OSTI)

The new infrared radiometer (conveyable low-noise infrared radiometer for measurements of atmosphere and ground surface targets, or CLIMAT) is a highly sensitive field instrument designed to measure brightness temperatures or radiances in the ...

Michel Legrand; Christophe Pietras; Gérard Brogniez; Martial Haeffelin; Nader Khalil Abuhassan; Michaël Sicard

2000-09-01T23:59:59.000Z

149

Development of a 3D atmospheric radiative transfer model  

Science Conference Proceedings (OSTI)

The 3D atmospheric radiative transfer model is established based on MODTRAN4. Moreover, the methods of calculating the ratio of atmospheric transmission, path radiation and single scattering solar radiation are presented. This 3D model is running by ... Keywords: MODTRAN4, atmospheric radiative transfer model, infrared radiation

Zhifeng Lu; Ge Li; Gang Guo; Kedi Huang

2008-05-01T23:59:59.000Z

150

Dynamic Infrared Simulation.  

E-Print Network (OSTI)

?? The increased usage of infrared sensors by pilots has created a growing demand for simulated environments based on infrared radiation. This has led to… (more)

Dehlin, Jonas

2006-01-01T23:59:59.000Z

151

Laser ablation electrospray ionization (LAESI) for atmospheric pressure, in vivo, and imaging mass spectrometry  

DOE Patents (OSTI)

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation with electrospray ionization (ESI).

Vertes, Akos; Nemes, Peter

2013-07-16T23:59:59.000Z

152

Laser ablation electrospray ionization (LAESI) for atmospheric pressure, In vivo, and imaging mass spectrometry  

SciTech Connect

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation (LA) with electrospray ionization (ESI).

Vertes, Akos (Reston, VA); Nemes, Peter (Silver Spring, MD)

2011-11-29T23:59:59.000Z

153

Observations of Seasonal Variations in Atmospheric Greenhouse Trapping and Its Enhancement at High Sea Surface Temperature  

Science Conference Proceedings (OSTI)

The correlation between observed values of atmospheric greenhouse trapping and sea surface temperature is found to vary seasonally. Atmospheric greenhouse trapping is defined here as the difference between infrared emissions from the earth's ...

Robert Hallberg; Anand K. Inamdar

1993-05-01T23:59:59.000Z

154

A Regularized Neural Net Approach for Retrieval of Atmospheric and Surface Temperatures with the IASI Instrument  

Science Conference Proceedings (OSTI)

In this paper, a fast atmospheric and surface temperature retrieval algorithm is developed for the high-resolution Infrared Atmospheric Sounding Interferometer (IASI) spaceborne instrument. This algorithm is constructed on the basis of a neural ...

Filipe Aires; Alain Chédin; Noëlle A. Scott; William B. Rossow

2002-02-01T23:59:59.000Z

155

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

156

Perfluorocarbons in the global atmosphere: tetrafluoromethane, hexafluoroethane, and octafluoropropane  

E-Print Network (OSTI)

We present atmospheric baseline growth rates from the 1970s to the present for the long-lived, strongly infrared-absorbing perfluorocarbons (PFCs) tetrafluoromethane (CF4), hexafluoroethane (C2F6), and octafluoropropane ...

Muhle, J.

157

Estimation of Atmospheric Motion Vectors from Kalpana-1 Imagers  

Science Conference Proceedings (OSTI)

The estimation of atmospheric motion vectors from infrared and water vapor channels on the geostationary operational Indian National Satellite System Kalpana-1 has been attempted here. An empirical height assignment technique based on a genetic ...

C. M. Kishtawal; S. K. Deb; P. K. Pal; P. C. Joshi

2009-11-01T23:59:59.000Z

158

Absorption of Solar Radiation by Atmospheric O4  

Science Conference Proceedings (OSTI)

Spectroscopic measurements of the atmospheric solar radiation attenuation reveal that the near ultraviolet–visible–near-infrared absorption of the oxygen collision complex (O2)2, thus far omitted from models, is important for the direct heating ...

Klaus Pfeilsticker; Frank Erle; Ulrich Platt

1997-04-01T23:59:59.000Z

159

Nonmigrating Diurnal Tides in the Equatorial Middle Atmosphere  

Science Conference Proceedings (OSTI)

Data from the Nimbus-7 Limb Infrared Monitor of the Stratosphere (LIMS) are used to extend the analysis of diurnal tides in the middle atmosphere to include the zonally symmetric and eastward propagating components. These modes show vertical and ...

Ruth S. Lieberman

1991-04-01T23:59:59.000Z

160

Atmospheric ammonia and particulate inorganic nitrogen over the United States  

E-Print Network (OSTI)

We use in situ observations from the Interagency Monitoring of PROtected Visual Environments (IMPROVE) network, the Midwest Ammonia Monitoring Project, 11 surface site campaigns as well as Infrared Atmospheric Sounding ...

Heald, Colette L.

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Infrared Surveys for AGN  

E-Print Network (OSTI)

From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for AGN surveys in the infrared and results from previous IR surveys. The Luminous Infrared Galaxies, which in some cases house dust-enshrouded AGN, submillimeter surveys, and recent studies of the cosmic x-ray and infrared backgrounds suggest that there is a population of highly-obscured AGN at high redshift. ISO Surveys have begun to resolve the infrared background and may have detected this obscured AGN population. New infrared surveys, particularly the SIRTF Wide-area Infrared Extragalactic Legacy Survey (SWIRE), will detect this population and provide a platform for understanding the evolution of AGN, Starbursts and passively evolving galaxies in the context of large-scale structure and environment.

Smith, H E

2002-01-01T23:59:59.000Z

162

Infrared Surveys for AGN  

E-Print Network (OSTI)

From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for AGN surveys in the infrared and results from previous IR surveys. The Luminous Infrared Galaxies, which in some cases house dust-enshrouded AGN, submillimeter surveys, and recent studies of the cosmic x-ray and infrared backgrounds suggest that there is a population of highly-obscured AGN at high redshift. ISO Surveys have begun to resolve the infrared background and may have detected this obscured AGN population. New infrared surveys, particularly the SIRTF Wide-area Infrared Extragalactic Legacy Survey (SWIRE), will detect this population and provide a platform for understanding the evolution of AGN, Starbursts and passively evolving galaxies in the context of large-scale structure and environment.

Harding E. Smith

2002-03-06T23:59:59.000Z

163

Posters Long-Pathlength Infrared Absorption Measurements  

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

3 3 Posters Long-Pathlength Infrared Absorption Measurements in the 8- to 14-µm Atmospheric Window: Self-Broadening Coefficient Data T. J. Kulp (a) and J. Shinn Geophysics and Environmental Research Program Lawrence Livermore National Laboratory Livermore, California Introduction The accurate characterization of the latent infrared (IR) absorption in the atmospheric window regions continues to be an area of research interest for the global climate modeling community. In the window between 8 and 14 µm, this absorption can be attributed primarily to water vapor. It consists of 1) weak lines originating from the edge of the water vapor pure rotational band (at low wavenumbers) and the trailing P-branch of the υ 2 rovibrational band (at the high-wavenumber boundary of the window); and 2) the

164

Analysis of the SIAM Infrared Acquisition System  

SciTech Connect

This report describes and presents the results of an analysis of the performance of the infrared acquisition system for a Self-Initiated Antiaircraft Missile (SIAM). A description of the optical system is included, and models of target radiant intensity, atmospheric transmission, and background radiance are given. Acquisition probabilities are expressed in terms of the system signal-to-noise ratio. System performance against aircraft and helicopter targets is analyzed, and background discrimination techniques are discussed. 17 refs., 22 figs., 6 tabs.

Varnado, S.G.

1974-02-01T23:59:59.000Z

165

Infrared microscope inspection apparatus  

DOE Patents (OSTI)

Apparatus and system for inspecting infrared transparents, such as an array of photovoltaic modules containing silicon solar cells, includes an infrared microscope, at least three sources of infrared light placed around and having their axes intersect the center of the object field and means for sending the reflected light through the microscope. The apparatus is adapted to be mounted on an X-Y translator positioned adjacent the object surface. 4 figs.

Forman, S.E.; Caunt, J.W.

1985-02-26T23:59:59.000Z

166

Infrared Thermography Systems  

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

funds for Fiscal Year 2014. Title Infrared Thermography Systems Publication Type Book Chapter LBNL Report Number LBNL-46590 Year of Publication 2000 Authors Griffith, Brent...

167

Issues with infrared thermography  

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

Abstract Infrared scanning radiometers are used to generate temperature maps of building envelope components, including windows and insulation. These temperature maps may...

168

Infrared Interferometric Measurements of the Near-Surface Air Temperature over the Oceans  

Science Conference Proceedings (OSTI)

The radiometric measurement of the marine air temperature using a Fourier transform infrared spectroradiometer is described. The measurements are taken by the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) that has been deployed on ...

P. J. Minnett; K. A. Maillet; J. A. Hanafin; B. J. Osborne

2005-07-01T23:59:59.000Z

169

The Miami2001 Infrared Radiometer Calibration and Intercomparison. Part I: Laboratory Characterization of Blackbody Targets  

Science Conference Proceedings (OSTI)

The second calibration and intercomparison of infrared radiometers (Miami2001) was held at the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) during May–June 2001. The participants were from several groups ...

J. P. Rice; J. J. Butler; B. C. Johnson; P. J. Minnett; K. A. Maillet; T. J. Nightingale; S. J. Hook; A. Abtahi; C. J. Donlon; I. J. Barton

2004-02-01T23:59:59.000Z

170

The Miami2001 Infrared Radiometer Calibration and Intercomparison. Part II: Shipboard Results  

Science Conference Proceedings (OSTI)

The second calibration and intercomparison of infrared radiometers (Miami2001) was held at the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) during a workshop held from May to June 2001. The radiometers ...

I. J. Barton; P. J. Minnett; K. A. Maillet; C. J. Donlon; S. J. Hook; A. T. Jessup; T. J. Nightingale

2004-02-01T23:59:59.000Z

171

Effect of infrared transparency on the heat transfer through windows: a clarification of the greenhouse effect  

SciTech Connect

The various radiative, convective, and conductive components of the net heat transfer are calculated and illustrated for various infrared transparencies of covers such as would be used in architectural, greenhouse, or solar collector windows. It is shown that in the limiting cases of infrared opacity and infrared transparency the relative contributions of the three modes of heat transfer are altered, but all contribute significantly. The radiation shielding arguments pertain to the analogous greenhouse effect in the atmosphere.

Silverstein, S.D.

1976-07-16T23:59:59.000Z

172

Infrared Basics | Open Energy Information  

Open Energy Info (EERE)

2013 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Infrared Basics Citation Protherm. Infrared Basics Internet. 2013. cited...

173

Temperature profile of the infrared image Heat exchange between  

E-Print Network (OSTI)

T Temperature profile of the infrared image Heat exchange between atmosphere and ocean References part at high frequencies delivers the exchange time. Cool skin of the ocean the net heat flux between gas exchange and wind speed over the ocean, J. Geophys. Res. 97, 7373-7381, 1992, Nightingale, P

Jaehne, Bernd

174

Information Content and Uncertainties in Thermodynamic Profiles and Liquid Cloud Properties Retrieved from the Ground-Based Atmospheric Emitted Radiance Interferometer (AERI)  

Science Conference Proceedings (OSTI)

The Atmospheric Emitted Radiance Interferometer (AERI) observes spectrally resolved downwelling radiance emitted by the atmosphere in the infrared portion of the electromagnetic spectrum. Profiles of temperature and water vapor, and cloud liquid ...

D.D. Turner; U. Löhnert

175

Assimilation of AIRS Radiances Affected by Mid- to Low-Level Clouds  

Science Conference Proceedings (OSTI)

An approach to make use of Atmospheric Infrared Sounder (AIRS) cloud-affected infrared radiances has been developed at Météo-France in the context of the global numerical weather prediction model. The method is based on (i) the detection and the ...

Thomas Pangaud; Nadia Fourrie; Vincent Guidard; Mohamed Dahoui; Florence Rabier

2009-12-01T23:59:59.000Z

176

Infrared Thermography Laboratory  

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

Infrared Thermography Laboratory Infrared Thermography Laboratory The Infrared Thermography Laboratory (IRLab) conducts detailed laboratory experiments on the thermal performance of windows and other insulated systems. During a typical experiment, a specimen is placed between two environmental chambers that simulate a long, cold night during winter. Besides generating informative thermal images, the experiments collect several types of quantitative data with high spatial resolution that are useful for understanding subtle details in the thermal performance and for validating computer simulations of heat and fluid flows. Thermography experiments in the IRLab use an infrared imager to produce qualitative thermal images, or thermograms, that help provide a visual interpretation of how heat is flowing through the specimen. The infrared thermograms are also taken and postprocessed to extract numerical data to perform quantitative thermography that produces a database of the distribution of surface temperatures on the warm side of various specimen. A traversing system is also used to measure the distribution of air temperatures and velocities near the specimen. Research results are presented at various technical conferences -- see our schedule of upcoming conferences. Technical papers on infrared thermography are available for downloading. The IRLab contains a machine tool shop area that supports fabrication efforts in the Building Technologies Department. Other types of research, such as Non-Destructive Evaluation, are also conducted in the IRLab.

177

Infrared Protein Crystallography  

DOE Green Energy (OSTI)

We consider the application of infrared spectroscopy to protein crystals, with particular emphasis on exploiting molecular orientation through polarization measurements on oriented single crystals. Infrared microscopes enable transmission measurements on individual crystals using either thermal or nonthermal sources, and can accommodate flow cells, used to measure spectral changes induced by exposure to soluble ligands, and cryostreams, used for measurements of flash-cooled crystals. Comparison of unpolarized infrared measurements on crystals and solutions probes the effects of crystallization and can enhance the value of the structural models refined from X-ray diffraction data by establishing solution conditions under which they are most relevant. Results on several proteins are consistent with similar equilibrium conformational distributions in crystal and solutions. However, the rates of conformational change are often perturbed. Infrared measurements also detect products generated by X-ray exposure, including CO{sub 2}. Crystals with favorable symmetry exhibit infrared dichroism that enhances the synergy with X-ray crystallography. Polarized infrared measurements on crystals can distinguish spectral contributions from chemically similar sites, identify hydrogen bonding partners, and, in opportune situations, determine three-dimensional orientations of molecular groups. This article is part of a Special Issue entitled: Protein Structure and Function in the Crystalline State.

J Sage; Y Zhang; J McGeehan; R Ravelli; M Weik; J van Thor

2011-12-31T23:59:59.000Z

178

Evolution of the Southern Hemisphere Subpolar Middle Atmosphere during Summer and Autumn  

Science Conference Proceedings (OSTI)

The evolution of zonal wind and zonal wavenumber one (wave 1) in the Southern Hemisphere subpolar middle atmosphere is described for the period December 1978–May 1979 using temperature and ozone measurements from the Limb Infrared Monitor of the ...

T. Miles; W. L. Grose; E. E. Remsberg; G. Lingenfelser

1994-03-01T23:59:59.000Z

179

Validation of Satellite-Derived Atmospheric Motion Vectors and Analyses around Tropical Disturbances  

Science Conference Proceedings (OSTI)

Fields of atmospheric motion vectors (AMVs) are routinely derived by tracking features in sequential geostationary satellite infrared, water vapor, and visible-channel imagery. While AMVs produced operationally by global data centers are routinely ...

John Sears; Christopher S. Velden

2012-10-01T23:59:59.000Z

180

Comparison of Nimbus-7 SMMR and GOES-1 VISSR Atmospheric Liquid Water Content  

Science Conference Proceedings (OSTI)

Vertically integrated atmospheric liquid water content derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) brightness temperatures and from GOES-1 Visible and Infrared Spin-Scan Radiometer (VISSR) radiances in the visible are ...

Jean-Yves Lojou; Robert Frouin; René Bernard

1991-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Evolution of the Zonal Mean State in the Equatorial Middle Atmosphere during October 1978-May 1979  

Science Conference Proceedings (OSTI)

The evolution of the zonal mean state in the equatorial middle atmosphere is investigated with the use of daily mapped temperatures derived from the Limb Infrared Monitor of the Stratosphere (LIMS) experiment. These quasi-global, high vertical ...

Matthew H. Hitchman; Conway B. Leovy

1986-12-01T23:59:59.000Z

182

Monitoring of Sahelian Aerosol and Atmospheric Water Vapor Content Characteristics from Sun Photometer Measurements  

Science Conference Proceedings (OSTI)

Atmospheric measurements in two Sahelian sites in West Africa are presented and analyzed. The measurements were performed using a sun photometer with five bands in the visible and near-infrared range of the solar spectrum. This instrument ...

C. A. Faizoun; A. Podaire; G. Dedieu

1994-11-01T23:59:59.000Z

183

The Upper Atmosphere of HD17156b  

E-Print Network (OSTI)

HD17156b is a newly-found transiting extrasolar giant planet (EGP) that orbits its G-type host star in a highly eccentric orbit (e~0.67) with an orbital semi-major axis of 0.16 AU. Its period, 21.2 Earth days, is the longest among the known transiting planets. The atmosphere of the planet undergoes a 27-fold variation in stellar irradiation during each orbit, making it an interesting subject for atmospheric modelling. We have used a three-dimensional model of the upper atmosphere and ionosphere for extrasolar gas giants in order to simulate the progress of HD17156b along its eccentric orbit. Here we present the results of these simulations and discuss the stability, circulation, and composition in its upper atmosphere. Contrary to the well-known transiting planet HD209458b, we find that the atmosphere of HD17156b is unlikely to escape hydrodynamically at any point along the orbit, even if the upper atmosphere is almost entirely composed of atomic hydrogen and H+, and infrared cooling by H3+ ions is negligible. The nature of the upper atmosphere is sensitive to to the composition of the thermosphere, and in particular to the mixing ratio of H2, as the availability of H2 regulates radiative cooling. In light of different simulations we make specific predictions about the thermosphere-ionosphere system of HD17156b that can potentially be verified by observations.

T. T. Koskinen; A. D. Aylward; S. Miller

2008-11-28T23:59:59.000Z

184

A High-Accuracy Multiwavelength Radiometer for In Situ Measurements in the Thermal Infrared. Part II: Behavior in Field Experiments  

Science Conference Proceedings (OSTI)

The performances of the new conveyable low-noise infrared radiometer for measurements of atmosphere and ground surface targets, or CLIMAT, are presented for in situ measurements. For this, quantitative analyses were carried out on measurements ...

Gérard Brogniez; Christophe Pietras; Michel Legrand; Philippe Dubuisson; Martial Haeffelin

2003-07-01T23:59:59.000Z

185

Retrieval of Sea Surface Temperature from Space, Based on Modeling of Infrared Radiative Transfer: Capabilities and Limitations  

Science Conference Proceedings (OSTI)

The retrieval (estimation) of sea surface temperatures (SSTs) from space-based infrared observations is increasingly performed using retrieval coefficients derived from radiative transfer simulations of top-of-atmosphere brightness temperatures (...

Christopher J. Merchant; Pierre Le Borgne

2004-11-01T23:59:59.000Z

186

Sensitivity Analysis of Cirrus Cloud Properties from High-Resolution Infrared Spectra. Part I: Methodology and Synthetic Cirrus  

Science Conference Proceedings (OSTI)

A set of simulated high-resolution infrared (IR) emission spectra of synthetic cirrus clouds is used to perform a sensitivity analysis of top-of-atmosphere (TOA) radiance to cloud parameters. Principal component analysis (PCA) is applied to ...

Brian H. Kahn; Annmarie Eldering; Michael Ghil; Simona Bordoni; Shepard A. Clough

2004-12-01T23:59:59.000Z

187

Infrared Thermography Laboratory  

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

Scientists measuring sample at IR Thermography lab Scientists measuring sample at IR Thermography lab Infrared Thermography Laboratory In the Infrared Thermography Laboratory (IRLab), researchers test the thermal performance of windows and other insulated systems. Test specimens are placed between chambers that simulate different climate conditions, including household room temperature versus extreme winter cold with high exterior wind speed. Using an infrared imaging system, the IRLab produces calibrated quantitative thermal images, or surface temperature maps, of the specimens in heat transfer experiments. This high resolution non-contact surface temperature data help researchers understand details of thermal performance and validate computer simulations of heat and fluid flow, as well as provide a powerful visualization of detailed thermal features in

188

Water vapor and greenhouse trapping: The role of far infrared absorption  

SciTech Connect

Few observations have been made of atmospheric absorption across the far infra-red. Yet water vapour absorption in this spectral region may significantly effect climate. The impact of far infra-red absorption is assessed by calculating the spectral variation of the total and water vapour greenhouse effects, for the sub-arctic winter (SAW) and tropical (TRP) standard atmospheres. Although the calculated efficiency of greenhouse trapping peaks outside of the far infra-red, the low strength there of the Planck function causes relatively small absolute forcings, except in the carbon dioxide and ozone bands. The sensitivity of the normalised greenhouse effect to water vapour concentration is largest in the far infra-red for the SAW atmosphere, and in the window region for the TRP. The sensitivity differs most between the two atmospheres in the far infra-red, over the middle/upper troposphere; in the SAw case the contribution from the water vapour continuum is virtually eliminated. Improved spectral observations and simulations at far infra-red wavelengths thus appear necessary to better understand the contemporary greenhouse effect, and to validate models of climate change. 16 refs., 3 figs., 1 tab.

Sinha, A.; Harries, J.E. [Imperial College of Science, Technology and Medicine, Prince Consort Road (United Kingdom)

1995-08-15T23:59:59.000Z

189

ARM - Evaluation Product - Airborne Visible/Infrared Imaging Spectrometer  

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

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

190

Infrared Transmission Spectra for Extrasolar Giant Planets  

E-Print Network (OSTI)

Among the hot Jupiters that transit their parent stars known to date, the two best candidates to be observed with transmission spectroscopy in the mid-infrared (MIR) are HD189733b and HD209458b, due to their combined characteristics of planetary density, orbital parameters and parent star distance and brightness. Here we simulate transmission spectra of these two planets during their primary eclipse in the MIR, and we present sensitivity studies of the spectra to the changes of atmospheric thermal properties, molecular abundances and C/O ratios. Our model predicts that the dominant species absorbing in the MIR on hot Jupiters are water vapor and carbon monoxide, and their relative abundances are determined by the C/O ratio. Since the temperature profile plays a secondary role in the transmission spectra of hot Jupiters compared to molecular abundances, future primary eclipse observations in the MIR of those objects might give an insight on EGP atmospheric chemistry. We find here that the absorption features caused by water vapor and carbon monoxide in a cloud-free atmosphere, are deep enough to be observable by the present and future generation of space-based observatories, such as Spitzer Space Telescope and James Webb Space Telescope. We discuss our results in light of the capabilities of these telescopes.

G. Tinetti; M. C. Liang; A. Vidal-Madjar; D. Ehrenreich; A. Lecavelier des Etangs; Y. Yung

2006-11-06T23:59:59.000Z

191

Infrared and Sub-millimetre Observing Conditions on the Antarctic Plateau  

E-Print Network (OSTI)

The Antarctic plateau provides the best terrestrial sites for infrared and sub-millimetre astronomy. In this paper we examine the relative importance of temperature, aerosol content and precipitable water vapour to determine which parameters have the greatest influence on atmospheric transmission and sky brightness. We use the atmospheric modelling program, MODTRAN, to model the observed sky spectrum at the South Pole from the near-IR to the sub-millimetre. We find that temperature and aerosol content determine the quality of nearIR observing conditions, aerosol content is the determining factor in the mid-IR up to 20m, while at longer wavelengths, including the sub-millimetre, it is the water vapour content that matters. Finding a location where aerosol levels are minimised is a key constraint in determining the optimum site on the Antarctic plateau for an infrared observatory. Keywords: Site testing, atmospheric effects, infrared: general. 1 Introduction It is now well es...

Marton G. Hidas; Michael G. Burton; Matthew A. Chamberlain; John W.V. Storey

2000-01-01T23:59:59.000Z

192

The Boulder Atmospheric Observatory  

Science Conference Proceedings (OSTI)

The Boulder Atmospheric Observatory (BAO) is a unique research facility for studying the planetary boundary layer and for testing and calibrating atmospheric sensors. The facility includes a 300 m tower instrumented with fast- and slow-response ...

J. C. Kaimal; J. E. Gaynor

1983-05-01T23:59:59.000Z

193

Atmospheric Radiation Measurement Program  

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

Atmospheric Observatory (UAO) Pilot Experiment at NYC" - Michael Reynolds, BNL 17:30 "EML Pilot Studies for the Urban Atmospheric Observatory" - Hsi-Na (Sam) Lee, EML 17:40 "A...

194

Mid?Infrared Spectral Diagnostics of Luminous Infrared Galaxies  

Science Conference Proceedings (OSTI)

We present a statistical analysis of 248 luminous infrared galaxies (LIRGs) which comprise the Great Observatories All?sky LIRG Survey (GOALS) observed with the Infrared Spectrograph (IRS) on?board Spitzer in the rest?frame wavelength range between 5 and 38 ?m. The GOALS sample enables a direct measurement of the relative contributions of star?formation and active galactic nuclei (AGN) to the total infrared (IR) emission from a large

A. Petric; The GOALS collaboration

2010-01-01T23:59:59.000Z

195

ON THE STABILITY OF SUPER-EARTH ATMOSPHERES  

SciTech Connect

We investigate the stability of super-Earth atmospheres around M stars using a seven-parameter, analytical framework. We construct stability diagrams in the parameter space of exoplanetary radius versus semimajor axis and elucidate the regions in which the atmospheres are stable against the condensation of their major constituents, out of the gas phase, on their permanent nightside hemispheres. We find that super-Earth atmospheres that are nitrogen-dominated (Earth-like) occupy a smaller region of allowed parameter space, compared to hydrogen-dominated atmospheres, because of the dual effects of diminished advection and enhanced radiative cooling. Furthermore, some super-Earths which reside within the habitable zones of M stars may not possess stable atmospheres, depending on the mean molecular weight and infrared photospheric pressure of their atmospheres. We apply our stability diagrams to GJ 436b and GJ 1214b, and demonstrate that atmospheric compositions with high mean molecular weights are disfavored if these exoplanets possess solid surfaces and shallow atmospheres. Finally, we construct stability diagrams tailored to the Kepler data set, for G and K stars, and predict that about half of the exoplanet candidates are expected to harbor stable atmospheres if Earth-like conditions are assumed. We include 55 Cancri e and CoRoT-7b in our stability diagram for G stars.

Heng, Kevin [ETH Zuerich, Institute for Astronomy, Wolfgang-Pauli-Strasse 27, CH-8093, Zuerich (Switzerland); Kopparla, Pushkar [ETH Zuerich, Institute for Atmospheric and Climate Science, Universitaetstrasse 16, CH-8092, Zuerich (Switzerland)

2012-07-20T23:59:59.000Z

196

Observations of the Infrared Radiative Properties of the Ocean—Implications for the Measurement of Sea Surface Temperature via Satellite Remote Sensing  

Science Conference Proceedings (OSTI)

The Atmospheric Emitted Radiance Interferometer (AERI) was used to measure the infrared radiative properties and the temperature of the Gulf of Mexico during a 5-day oceanographic cruise in January 1995. The ocean skin temperature was measured ...

William L. Smith; R. O. Knuteson; H. E. Revercomb; W. Feltz; N. R. Nalli; H. B. Howell; W. P. Menzel; Otis Brown; James Brown; Peter Minnett; Walter McKeown

1996-01-01T23:59:59.000Z

197

An Improved Quality Control for AIRS Total Column Ozone Observations within and around Hurricanes  

Science Conference Proceedings (OSTI)

Atmospheric Infrared Sounder (AIRS) provides twice-daily global observations from which total column ozone data can be retrieved. However, 20% ~ 30% of AIRS ozone data are flagged to be of bad quality. Most of the flagged data were identified to ...

H. Wang; X. Zou; G. Li

2012-03-01T23:59:59.000Z

198

First-Order Structure Function Analysis of Statistical Scale Invariance in the AIRS-Observed Water Vapor Field  

Science Conference Proceedings (OSTI)

The power-law scale dependence, or scaling, of first-order structure functions of the tropospheric water vapor field between 58°S and 58°N is investigated using observations from the Atmospheric Infrared Sounder (AIRS). Power-law scale dependence ...

Kyle G. Pressel; William D. Collins

2012-08-01T23:59:59.000Z

199

Patterns of CO2 Variability from Global Satellite Data  

Science Conference Proceedings (OSTI)

The authors present an analysis of the global midtropospheric CO2 retrieved for all-sky (clear and cloudy) conditions from measurements by the Atmospheric Infrared Radiation Sounder on board the Aqua satellite in 2003–09. The global data coverage ...

Alexander Ruzmaikin; Hartmut H. Aumann; Thomas S. Pagano

2012-09-01T23:59:59.000Z

200

Comparisons of Clear-Sky Outgoing Far-IR Flux Inferred from Satellite Observations and Computed from the Three Most Recent Reanalysis Products  

Science Conference Proceedings (OSTI)

The far-IR spectrum plays an important role in the earth’s radiation budget and remote sensing. The authors compare the near-global (80°S–80°N) outgoing clear-sky far-IR flux inferred from the collocated Atmospheric Infrared Sounder (AIRS) and ...

Xiuhong Chen; Xianglei Huang; Norman G. Loeb; Heli Wei

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Infrared Optical Imaging Techniques for Gas Visualization and Measurement  

E-Print Network (OSTI)

Advancement in infrared imaging technology has allowed the thermal imaging to detect and visualize several gases, mostly hydrocarbon gases. In addition, infrared cameras could potentially be used as a non-contact temperature measurement for gas and vapor. However, current application of infrared imaging techniques for gas measurements are still limited due to several uncertainties in their performance parameters. The aim of this research work was to determine the key factors in the application of infrared imaging technology for gas visualization and a non-contact temperature measurement. Furthermore, the concentration profile and emission rate of the gas are predicted by combining the application of the infrared imaging method with gas dispersion modeling. In this research, infrared cameras have been used to visualize liquefied natural gas (LNG) plumes from LNG spills on water. The analyses of the thermograms showed that the apparent temperatures were different from the thermocouple measurement which occurred due to the assumption of that the object emissivity was always equal to unity. The emissivity for pure methane gas and a mixture of methane and atmospheric gases were then evaluated in order to obtain the actual temperature distribution of the gas cloud. The results showed that by including the emissivity value of the gas, the temperature profile of the dispersed gas obtained from a thermal imaging measurement was in good agreement with the measurement using the thermocouples. Furthermore, the temperature distribution of the gas was compared to the concentration of a dispersed LNG vapor cloud to obtain a correlation between the temperature and the concentration of the cloud. Other application of infrared imaging technique was also conducted for leak detection of natural gas from a pipeline. The capability of an infrared camera to detect a fugitive gas leak was combined with the simulation of vapor discharge and dispersion in order to obtain a correlation between the emission rates and the sizes of the gas plume to the minimum detectable concentration. The relationship of the methane gas cloud size to the gas emission rate was highly dependent to the prevailing atmospheric condition. The results showed that the correlation were best to predict the emission rate less than 0.2 kg/s. At higher emission rate, the increase in gas release rate did not change the size of the cloud significantly.

Safitri, Anisa

2011-05-01T23:59:59.000Z

202

Infrared laser system  

DOE Patents (OSTI)

An infrared laser system and method for isotope separation may comprise a molecular gas laser oscillator to produce a laser beam at a first wavelength, Raman spin flip means for shifting the laser to a second wavelength, a molecular gas laser amplifier to amplify said second wavelength laser beam to high power, and optical means for directing the second wavelength, high power laser beam against a desired isotope for selective excitation thereof in a mixture with other isotopes. The optical means may include a medium which shifts the second wavelength high power laser beam to a third wavelength, high power laser beam at a wavelength coincidental with a corresponding vibrational state of said isotope and which is different from vibrational states of other isotopes in the gas mixture.

Cantrell, Cyrus D. (Santa Fe, NM); Carbone, Robert J. (Los Alamos, NM); Cooper, Ralph S. (Los Alamos, NM)

1977-01-01T23:59:59.000Z

203

Infrared laser system  

DOE Patents (OSTI)

An infrared laser system and method for isotope separation may comprise a molecular gas laser oscillator to produce a laser beam at a first wavelength, Raman spin flip means for shifting the laser to a second wavelength, a molecular gas laser amplifier to amplify said second wavelength laser beam to high power, and optical means for directing the second wavelength, high power laser beam against a desired isotope for selective excitation thereof in a mixture with other isotopes. The optical means may include a medium which shifts the second wavelength high power laser beam to a third wavelength, high power laser beam at a wavelength coincidental with a corresponding vibrational state of said isotope and which is different from vibrational states of other isotopes in the gas mixture.

Cantrell, Cyrus D. (Richardson, TX); Carbone, Robert J. (Johnson City, TN); Cooper, Ralph (Hayward, CA)

1982-01-01T23:59:59.000Z

204

Atmospheric Radiation Measurement Program  

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

3 3 ARM 2003 Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement WARNING! WARNING! Today is April 1 But that has NO bearing on this message Today is April 1 But that has NO bearing on this message ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Two Topics Two Topics * Status of ARM (quick overview) * Science plan - ARM in the next 5 years * Status of ARM (quick overview) * Science plan - ARM in the next 5 years ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement ARM Status - Science ARM Status - Science * Steadily increasing productivity - Poster session - over 220 posters (may need to do something about submissions next year) - Peer-reviewed articles: 2.5 to 3 per year per

205

The ARM Atmospheric Emitted Radiance Interferometer (AERI): Status and  

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

The ARM Atmospheric Emitted Radiance Interferometer (AERI): Status and The ARM Atmospheric Emitted Radiance Interferometer (AERI): Status and Preliminary Assessments of Instrument Deployments in 2006 Dedecker, Ralph University of Wisconsin Demirgian, Jack Argonne National Laboratory Knuteson, Robert University Of Wisconsin Revercomb, Henry University of Wisconsin-Madison Tobin, David University of Wisconsin-Madison Turner, David University of Wisconsin-Madison Category: Instruments One of the key operational instruments at the Atmospheric Radiation Measurement Climate Research Facility (ACRF) is the Atmospheric Emitted Radiance Interferometer (AERI). This instrument provides the ARM program with surface-based observations of infrared spectrally resolved radiance from a vertically directed cone with better than 1% accuracy. The data from

206

Posters Atmospheric Emitted Radiance Interferometer Data Analysis Methods  

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

Posters Atmospheric Emitted Radiance Interferometer Data Analysis Methods R. O. Knuteson, W. L. Smith, S. A. Ackerman, H. E. Revercomb, H. Woolf, and H. Howell Cooperative Institute for Meteorological Satellite Studies University of Wisconsin-Madison Madison, Wisconsin Introduction Data from the Atmospheric Emitted Radiance Inter- ferometer (AERI) have been analyzed for the Atmospheric Radiation Measurement (ARM) Program's Fourier Transform Data Analysis Tools science team project under the direction of William L. Smith of the University of Wisconsin-Madison. The data consist of observations of the downwelling infrared emission at the surface from gaseous atmospheric constituents and from cloud and particulate aerosols. The observations are at 0.5 cm-1 spectral resolution over the

207

Forward looking infrared | Open Energy Information  

Open Energy Info (EERE)

2013 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Forward looking infrared Citation Wikipedia. Forward looking infrared...

208

Study of ice cloud properties using infrared spectral data  

E-Print Network (OSTI)

The research presented in this thesis involves the study of ice cloud microphysical and optical properties using both hyperspectral and narrowband infrared spectral data. First, ice cloud models are developed for the Infrared Atmospheric Sounding Interferometer (IASI) instrument onboard the METOP-A satellite, which provide the bulk-scattering properties of these clouds for the 8461 IASI channels between 645 and 2760 cm-1. We investigate the sensitivity of simulated brightness temperatures in this spectral region to the bulk-scattering properties of ice clouds containing individual ice crystal habits as well as for one habit distribution. The second part of this thesis describes an algorithm developed to analyze the sensitivity of simulated brightness temperatures at 8.5 and 11.0 µm to changes in effective cloud temperature by adjusting cloud top height and geometric thickness in a standard tropical atmosphere. Applicability of using these channels in a bi-spectral approach to retrieve cirrus cloud effective particle size and optical thickness is assessed. Finally, the algorithm is applied to the retrieval of these ice cloud properties for a case of single-layered cirrus cloud over a tropical ocean surface using measurements from the Moderate Resolution Infrared Spectroradiometer (MODIS). Cloud top height and geometric thickness in the profile are adjusted to assess the influence of effective cloud temperature on the retrieval.

Garrett, Kevin James

2007-08-01T23:59:59.000Z

209

* The far-infrared (λ > 15 µm) is an important  

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

infrared (λ > 15 µm) is an important infrared (λ > 15 µm) is an important component of the overall radiation budget of the Earth, accounting for approximately half of the outgoing infrared radiation to space. * Dominated by the pure rotation band of water vapor, the maximum mid-to-upper tropospheric cooling also occurs in the far-IR (left panel). * ARM science team research has resulted in enormous improvements in the treatment of radiation in climate models (e.g. Tobin et al. 1999; right panel). Tropical atmosphere cooling rates calculated using modern LBLRTM calculations(left panel) and differences between current and early ARM (1995/1996) calculations. At the conclusion of the 1997 SHEBA campaign, some spectral differences between Atmospheric Emitted Radiance Interferometer (AERI) measurements and

210

Regional Ecosystem-Atmosphere CO2 Exchange Via Atmospheric Budgets  

Science Conference Proceedings (OSTI)

Inversions of atmospheric CO2 mixing ratio measurements to determine CO2 sources and sinks are typically limited to coarse spatial and temporal resolution. This limits our ability to evaluate efforts to upscale chamber- and stand-level CO2 flux measurements to regional scales, where coherent climate and ecosystem mechanisms govern the carbon cycle. As a step towards the goal of implementing atmospheric budget or inversion methodology on a regional scale, a network of five relatively inexpensive CO2 mixing ratio measurement systems was deployed on towers in northern Wisconsin. Four systems were distributed on a circle of roughly 150-km radius, surrounding one centrally located system at the WLEF tower near Park Falls, WI. All measurements were taken at a height of 76 m AGL. The systems used single-cell infrared CO2 analyzers (Licor, model LI-820) rather than the siginificantly more costly two-cell models, and were calibrated every two hours using four samples known to within ± 0.2 ppm CO2. Tests prior to deployment in which the systems sampled the same air indicate the precision of the systems to be better than ± 0.3 ppm and the accuracy, based on the difference between the daily mean of one system and a co-located NOAA-ESRL system, is consistently better than ± 0.3 ppm. We demonstrate the utility of the network in two ways. We interpret regional CO2 differences using a Lagrangian parcel approach. The difference in the CO2 mixing ratios across the network is at least 2?3 ppm, which is large compared to the accuracy and precision of the systems. Fluxes estimated assuming Lagrangian parcel transport are of the same sign and magnitude as eddy-covariance flux measurements at the centrally-located WLEF tower. These results indicate that the network will be useful in a full inversion model. Second, we present a case study involving a frontal passage through the region. The progression of a front across the network is evident; changes as large as four ppm in one minute are captured. Influence functions, derived using a Lagrangian Particle Dispersion model driven by the CSU Regional Atmospheric Modeling System and nudged to NCEP reanalysis meteorological fields, are used to determine source regions for the towers. The influence functions are combined with satellite vegetation observations to interpret the observed trends in CO2 concentration. Full inversions will combine these elements in a more formal analytic framework.

Davis, K.J.; Richardson, S.J.; Miles, N.L.

2007-03-07T23:59:59.000Z

211

Observations of seasonal variations in atmospheric greenhouse trapping and its enhancement at high sea surface temperature  

SciTech Connect

The correlation between observed values of atmospheric greenhouse trapping and sea surface temperature is found to vary seasonally. Atmospheric greenhouse trapping is defined here as the difference between infrared emissions from the earth's surface and infrared emissions from the top of the atmosphere through cloudless skies. Infrared surface emissions are calculated from known sea surface temperatures; emissions from the top of the atmosphere are taken from direct satellite measurements. Atmospheric greenhouse trapping at the same sea surface temperature is greater in the winter than in the summer over temperate oceans. In subtropical latitudes, the opposite is true. At surface temperatures above approximately 298 K, atmospheric greenhouse trapping is found to increase even more rapidly from regions of lower sea surface temperature to regions of higher surface temperature than infrared surface emissions. The causes for this [open quotes]super[close quotes] greenhouse effect are explored, and four processes are found to contribute. Water vapor continuum absorption and thermodynamically controlled increases in water vapor concentration at constant relative humidity with increasing atmospheric temperature make significant contributions, but do not explain the entire super greenhouse effect. To explain the observations of atmospheric greenhouse trapping, the upper and middle troposphere, must be increasingly moist over the warmest sea surface temperatures, while the atmospheric temperature profile becomes increasingly unstable. Regions with these high sea surface temperatures are also increasingly subject to deep convection, which suggests that convection moistens the upper and middle troposphere in regions of convective activity relative to nonconvective regions, resulting in the super greenhouse effect. Dynamic processes, along with local thermodynamic processes, are required to explain the observed super greenhouse effect. 30 refs., 3 figs., 2 tabs.

Hallberg, R. (Univ. of Washington, Seattle (United States)); Inamdar, A.K. (Scripps Institution of Oceanography, La Jolla, CA (United States))

1993-05-01T23:59:59.000Z

212

Direct Aerosol Forcing in the Infrared at the SGP Site?  

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

Direct Aerosol Forcing in the Infrared at the SGP Site? Direct Aerosol Forcing in the Infrared at the SGP Site? D. D. Turner and C. N. Long Pacific Northwest National Laboratory Richland, Washington Introduction Low level haze is often observed during the night and early morning hours in many locations. This haze is typically formed during quiescent conditions by radiative cooling of the surface, which lowers the ambient temperature and consequently increases the near-surface relative humidity (RH). Many aerosols start to deliquesce around 75% relative humidity (RH) (depending on their chemical composition), and thus if the near surface RH increases above this level, haze will form. The Atmospheric Radiation Measurement (ARM) Program's ultimate goal, stated simply, is to improve the treatment of radiative transfer in global climate models. Global climate models typically do not

213

Data Assimilation of Satellite-Derived Heating Rates as Proxy Surface Wetness Data into a Regional Atmospheric Mesoscale Model. Part I: Methodology  

Science Conference Proceedings (OSTI)

A satellite data assimilation method is developed which incorporates satellite-observed infrared heating rates into a mesoscale atmospheric model to retrieve model soil moisture. The method builds upon previous work with the model’s surface ...

Andrew S. Jones; Ingrid C. Guch; Thomas H. Vonder Haar

1998-03-01T23:59:59.000Z

214

Data Assimilation of Satellite-Derived Heating Rates as Proxy Surface Wetness Data into a Regional Atmospheric Mesoscale Model. Part II: A Case Study  

Science Conference Proceedings (OSTI)

A satellite data assimilation method is applied which incorporates satellite-observed heating infrared rates into a mesoscale atmospheric model to retrieve model soil moisture. In a 3D case study, the method is successful at retrieving realistic ...

Andrew S. Jones; Ingrid C. Guch; Thomas H. Vonder Haar

1998-03-01T23:59:59.000Z

215

HIRS-AMTS Satellite Sounding System Test—Theoretical and Empirical Vertical Resolving Power  

Science Conference Proceedings (OSTI)

Theoretical and empirical analyses of the vertical resolving power of the High resolution Infrared Radiation Sounder (HIRS) and the Advanced Moisture and Temperature Sounder (AMTS) is carried out. First, the infrared transmittance weighting ...

Owen E. Thompson

1982-10-01T23:59:59.000Z

216

Infrared Cloud Imager Deployment at the North Slope of Alaska During Early 2002  

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

Infrared Cloud Imager Deployment Infrared Cloud Imager Deployment at the North Slope of Alaska During Early 2002 J. A. Shaw and B. Thurairajah Department of Electrical and Computer Engineering Montana State University Bozeman, Montana E. Edqvist National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado K. Mizutani Communications Research Laboratory Koganei, Tokyo, Japan Introduction Starting in February 2002, we deployed a new cloud-radiation sensor called the infrared cloud imager (ICI) at the North Slope of Alaska (NSA) site near Barrow, Alaska (71.32 N, 156.62 W). ICI records radiometrically calibrated images of the thermal infrared sky radiance in the 8µm to 14 µm wavelength band, from which spatial cloud statistics and spatially resolved cloud radiance can be determined.

217

Atmospheric Radiation Measurement Program facilities newsletter, July 2001.  

Science Conference Proceedings (OSTI)

Global Warming and Methane--Global warming, an increase in Earth's near-surface temperature, is believed to result from the buildup of what scientists refer to as ''greenhouse gases.'' These gases include water vapor, carbon dioxide, methane, nitrous oxide, ozone, perfluorocarbons, hydrofluoro-carbons, and sulfur hexafluoride. Greenhouse gases can absorb outgoing infrared (heat) radiation and re-emit it back to Earth, warming the surface. Thus, these gases act like the glass of a greenhouse enclosure, trapping infrared radiation inside and warming the space. One of the more important greenhouse gases is the naturally occurring hydrocarbon methane. Methane, a primary component of natural gas, is the second most important contributor to the greenhouse effect (after carbon dioxide). Natural sources of methane include wetlands, fossil sources, termites, oceans, fresh-waters, and non-wetland soils. Methane is also produced by human-related (or anthropogenic) activities such as fossil fuel production, coal mining, rice cultivation, biomass burning, water treatment facilities, waste management operations and landfills, and domesticated livestock operations (Figure 1). These anthropogenic activities account for approximately 70% of the methane emissions to the atmosphere. Methane is removed naturally from the atmosphere in three ways. These methods, commonly referred to as sinks, are oxidation by chemical reaction with tropospheric hydroxyl ion, oxidation within the stratosphere, and microbial uptake by soils. In spite of their important role in removing excess methane from the atmosphere, the sinks cannot keep up with global methane production. Methane concentrations in the atmosphere have increased by 145% since 1800. Increases in atmospheric methane roughly parallel world population growth, pointing to anthropogenic sources as the cause (Figure 2). Increases in the methane concentration reduce Earth's natural cooling efficiency by trapping more of the outgoing terrestrial infrared radiation, increasing the near-surface temperature.

Holdridge, D. J.

2001-07-23T23:59:59.000Z

218

Simulation of Atmospheric Variability  

Science Conference Proceedings (OSTI)

A spectral atmospheric circulation model is time-integrated for approximately 18 years. The model has a global computational domain and realistic geography and topography. The model undergoes an annual cycle as daily values of seasonally varying ...

Syukuro Manabe; Douglas G. Hahn

1981-11-01T23:59:59.000Z

219

Atmospheric Laser Communication  

Science Conference Proceedings (OSTI)

Atmospheric laser communication, often referred to as free-space optics (FSO) or free-space laser (FSL) communication, is similar to fiber optic cable in terms of carrier wavelength and bandwidth capability, but data are transmitted directly ...

Kenneth W. Fischer*Michael R. Witiw; Jeffrey A. Baars+; T. R. Oke

2004-05-01T23:59:59.000Z

220

Atmospheric Available Energy  

Science Conference Proceedings (OSTI)

The total potential energy of the atmosphere is the sum of its internal and gravitational energies. The portion of this total energy available to be converted into kinetic energy is determined relative to an isothermal, hydrostatic, equilibrium ...

Peter R. Bannon

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Atmospheric optical calibration system  

DOE Patents (OSTI)

An atmospheric optical calibration system is provided to compare actual atmospheric optical conditions to standard atmospheric optical conditions on the basis of aerosol optical depth, relative air mass, and diffuse horizontal skylight to global horizontal photon flux ratio. An indicator can show the extent to which the actual conditions vary from standard conditions. Aerosol scattering and absorption properties, diffuse horizontal skylight to global horizontal photon flux ratio, and precipitable water vapor determined on a real-time basis for optical and pressure measurements are also used to generate a computer spectral model and for correcting actual performance response of a photovoltaic device to standard atmospheric optical condition response on a real-time basis as the device is being tested in actual outdoor conditions.

Hulstrom, Roland L. (Bloomfield, CO); Cannon, Theodore W. (Golden, CO)

1988-01-01T23:59:59.000Z

222

Atmospheric optical calibration system  

DOE Patents (OSTI)

An atmospheric optical calibration system is provided to compare actual atmospheric optical conditions to standard atmospheric optical conditions on the basis of aerosol optical depth, relative air mass, and diffuse horizontal skylight to global horizontal photon flux ratio. An indicator can show the extent to which the actual conditions vary from standard conditions. Aerosol scattering and absorption properties, diffuse horizontal skylight to global horizontal photon flux ratio, and precipitable water vapor determined on a real-time basis for optical and pressure measurements are also used to generate a computer spectral model and for correcting actual performance response of a photovoltaic device to standard atmospheric optical condition response on a real-time basis as the device is being tested in actual outdoor conditions. 7 figs.

Hulstrom, R.L.; Cannon, T.W.

1988-10-25T23:59:59.000Z

223

FORMATION OF ORGANIC MOLECULES AND WATER IN WARM DISK ATMOSPHERES  

Science Conference Proceedings (OSTI)

Observations from Spitzer and ground-based infrared spectroscopy reveal significant diversity in the molecular emission from the inner few AU of T Tauri disks. We explore theoretically the possible origin of this diversity by expanding on our earlier thermal-chemical model of disk atmospheres. We consider how variations in grain settling, X-ray irradiation, accretion-related mechanical heating, and the oxygen-to-carbon ratio can affect the thermal and chemical properties of the atmosphere at 0.25-40 AU. We find that these model parameters can account for many properties of the detected molecular emission. The column density of the warm (200-2000 K) molecular atmosphere is sensitive to grain settling and the efficiency of accretion-related heating, which may account, at least in part, for the large range in molecular emission fluxes that have been observed. The dependence of the atmospheric properties on the model parameters may also help to explain trends that have been reported in the literature between molecular emission strength and mid-infrared color, stellar accretion rate, and disk mass. We discuss whether some of the differences between our model results and the observations (e.g., for water) indicate a role for vertical transport and freezeout in the disk midplane. We also discuss how planetesimal formation in the outer disk (beyond the snowline) may imprint a chemical signature on the inner few AU of the disk and speculate on possible observational tracers of this process.

Najita, Joan R. [National Optical Astronomy Observatory, 950 N. Cherry Avenue, Tucson, AZ 85719 (United States); Adamkovics, Mate; Glassgold, Alfred E. [Astronomy Department, University of California, Berkeley, CA 94720 (United States)

2011-12-20T23:59:59.000Z

224

ATMOSPHERIC RETRIEVAL FOR SUPER-EARTHS: UNIQUELY CONSTRAINING THE ATMOSPHERIC COMPOSITION WITH TRANSMISSION SPECTROSCOPY  

SciTech Connect

We present a retrieval method based on Bayesian analysis to infer the atmospheric compositions and surface or cloud-top pressures from transmission spectra of exoplanets with general compositions. In this study, we identify what can unambiguously be determined about the atmospheres of exoplanets from their transmission spectra by applying the retrieval method to synthetic observations of the super-Earth GJ 1214b. Our approach to inferring constraints on atmospheric parameters is to compute their joint and marginal posterior probability distributions using the Markov Chain Monte Carlo technique in a parallel tempering scheme. A new atmospheric parameterization is introduced that is applicable to general atmospheres in which the main constituent is not known a priori and clouds may be present. Our main finding is that a unique constraint of the mixing ratios of the absorbers and two spectrally inactive gases (such as N{sub 2} and primordial H{sub 2}+ He) is possible if the observations are sufficient to quantify both (1) the broadband transit depths in at least one absorption feature for each absorber and (2) the slope and strength of the molecular Rayleigh scattering signature. A second finding is that the surface pressure or cloud-top pressure can be quantified if a surface or cloud deck is present at low optical depth. A third finding is that the mean molecular mass can be constrained by measuring either the Rayleigh scattering slope or the shapes of the absorption features, thus enabling one to distinguish between cloudy hydrogen-rich atmospheres and high mean molecular mass atmospheres. We conclude, however, that without the signature of molecular Rayleigh scattering-even with robustly detected infrared absorption features (>10{sigma})-there is no reliable way to tell from the transmission spectrum whether the absorber is a main constituent of the atmosphere or just a minor species with a mixing ratio of X{sub abs} < 0.1%. The retrieval method leads us to a conceptual picture of which details in transmission spectra are essential for unique characterizations of well-mixed exoplanet atmospheres.

Benneke, Bjoern; Seager, Sara, E-mail: bbenneke@mit.edu [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States)

2012-07-10T23:59:59.000Z

225

Wood Inspection by Infrared Thermography  

E-Print Network (OSTI)

Wood is used everywhere and for everything. With times, this material presents many adulterations, witch degrade his physical properties. This work present a study of infrared thermography NDT for wood decay detection. The study is based on the difference of moisture content between sound wood and decay. In the first part, moisture content influence on response signal is determine. The second part define the limits of infrared thermography for wood decay detection. Results show that this method could be used, but with many cautions on depth and size of wood defects.

A. Wyckhuyse; X. Maldague; X. Maldague Corresponding

2002-01-01T23:59:59.000Z

226

Real time infrared aerosol analyzer  

DOE Patents (OSTI)

Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.

Johnson, Stanley A. (Countryside, IL); Reedy, Gerald T. (Bourbonnais, IL); Kumar, Romesh (Naperville, IL)

1990-01-01T23:59:59.000Z

227

THERMALLY DRIVEN ATMOSPHERIC ESCAPE  

Science Conference Proceedings (OSTI)

Accurately determining the escape rate from a planet's atmosphere is critical for determining its evolution. A large amount of Cassini data is now available for Titan's upper atmosphere and a wealth of data is expected within the next decade on escape from Pluto, Mars, and extra-solar planets. Escape can be driven by upward thermal conduction of energy deposited well below the exobase, as well as by nonthermal processes produced by energy deposited in the exobase region. Recent applications of a model for escape driven by upward thermal conduction, called the slow hydrodynamic escape model, have resulted in surprisingly large loss rates for the atmosphere of Titan, Saturn's largest moon. Based on a molecular kinetic simulation of the exobase region, these rates appear to be orders of magnitude too large. Therefore, the slow hydrodynamic model is evaluated here. It is shown that such a model cannot give a reliable description of the atmospheric temperature profile unless it is coupled to a molecular kinetic description of the exobase region. Therefore, the present escape rates for Titan and Pluto must be re-evaluated using the atmospheric model described here.

Johnson, Robert E., E-mail: rej@virginia.ed [Engineering Physics, Thornton Hall B102, University of Virginia, Charlottesville, VA 22902 (United States); Physics Department, New York University, New York, NY 10003 (United States)

2010-06-20T23:59:59.000Z

228

Atmospheric Carbon Dioxide Record from Mauna Loa  

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

SIO Air Sampling Network » Mauna Loa SIO Air Sampling Network » Mauna Loa Atmospheric Carbon Dioxide Record from Mauna Loa DOI: 10.3334/CDIAC/atg.035 graphics Graphics data Data Investigators R.F. Keeling, S.C. Piper, A.F. Bollenbacher and J.S. Walker Carbon Dioxide Research Group Scripps Institution of Oceanography University of California La Jolla, California 92093-0444, U.S.A. Period of Record 1958-2008 Methods Air samples at Mauna Loa are collected continuously from air intakes at the top of four 7-m towers and one 27-m tower. Four air samples are collected each hour for the purpose of determining the CO2 concentration. Determinations of CO2 are made by using a Siemens Ultramat 3 nondispersive infrared gas analyzer with a water vapor freeze trap. This analyzer registers the concentration of CO2 in a stream of air flowing at ~0.5

229

Intercomparison of NDSC Ground-Based Solar FTIR Measurements of Atmospheric Gases at Lauder, New Zealand  

Science Conference Proceedings (OSTI)

A formal intercomparison of atmospheric total column measurements of N2O, N2, CH4, O3, HCl, HNO3, and HF by two ground-based solar Fourier transform infrared (FTIR) spectrometers conducted as part of the Network for the Detection of Stratospheric ...

D. W. T. Griffith; N. B. Jones; B. McNamara; C. Paton Walsh; W. Bell; C. Bernardo

2003-08-01T23:59:59.000Z

230

Parameterizations for Water Vapor IR Radiative Transfer in Both the Middle and Lower Atmospheres  

Science Conference Proceedings (OSTI)

Water vapor contributes a maximum of 1°C/day to the middle atmospheric thermal infrared (IR) cooling. This magnitude is small but not negligible. Because of the small amount of mass involved and the extremely narrow molecular absorption lines at ...

Ming-Dah Chou; William L. Ridgway; Michael M-H. Yan

1995-04-01T23:59:59.000Z

231

ARM - Measurement - Atmospheric pressure  

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

pressure pressure 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 : Atmospheric pressure The pressure exerted by the atmosphere as a consequence of gravitational attraction exerted upon the "column" of air lying directly above the point in question. Categories Atmospheric State 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 SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

232

ARM - Measurement - Atmospheric temperature  

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

temperature 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 : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State 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 SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

233

Article Atmospheric Science  

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

© The Author(s) 2012. This article is published with open access at Springerlink.com csb.scichina.com www.springer.com/scp © The Author(s) 2012. This article is published with open access at Springerlink.com csb.scichina.com www.springer.com/scp *Corresponding author (email: luchunsong110@gmail.com) Article Atmospheric Science February 2013 Vol.58 No.4-5: 545  551 doi: 10.1007/s11434-012-5556-6 A method for distinguishing and linking turbulent entrainment mixing and collision-coalescence in stratocumulus clouds LU ChunSong 1,2* , LIU YanGang 2 & NIU ShengJie 1 1 Key Laboratory for Atmospheric Physics and Environment of China Meteorological Administration, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China; 2 Atmospheric Sciences Division, Brookhaven National Laboratory, New York 11973, USA

234

ARM - Measurement - Atmospheric moisture  

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

moisture moisture 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 : Atmospheric moisture The moisture content of the air as indicated by several measurements including relative humidity, specific humidity, dewpoint, vapor pressure, water vapor mixing ratio, and water vapor density; note that precipitable water is a separate type. Categories Atmospheric State 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

235

BNL | Atmospheric Systems Research  

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

Atmospheric System Research is a DOE observation-based research program Atmospheric System Research is a DOE observation-based research program created to advance process-level understanding of the key interactions among aerosols, clouds, precipitation, radiation, dynamics, and thermodynamics, with the ultimate goal of reducing the uncertainty in global and regional climate simulations and projections. General areas of research at BNL under this program include studies of aerosol and cloud lifecycles, and cloud-aerosol-precipitation interactions. Contact Robert McGraw, 631.344.3086 aerosols Aerosol Life Cycle The strategic focus of the Aerosol Life Cycle research is observation-based process science-examining the properties and evolution of atmospheric aerosols. Observations come from both long-term studies conducted by the

236

Infrared Dry-peeling Technology for Tomatoes  

E-Print Network (OSTI)

This research will use infrared heating technology for peeling tomatoes. Infrared dry peeling, a device District: 8 Senate District: 5 Application: Nationwide Amount: $324,250 Term: November 1, 2010

237

Infrared Thermography Guide (Revision 3)  

Science Conference Proceedings (OSTI)

Costly equipment outages can be reduced by implementing a comprehensive predictive maintenance program. Infrared thermography (IR), a fundamental component of such programs, uses nonintrusive techniques to monitor the operating condition of equipment and components. This revised report provides updated information to assist utilities in implementing an effective IR program.

2002-05-30T23:59:59.000Z

238

Industrial Use of Infrared Inspections  

E-Print Network (OSTI)

Infrared is and has been an established technology in the military and aerospace fields. However, only relatively recently has this technology found a "use" in the industrial sector. Many reasons exist why the technology has not been used, but in the final analysis it comes down to the fact that the industrial management responsible for the operations and production budgets did not, and in many cases, still does not understand the economic benefits to the company that infrared industrial inspections can bring about. Over the last 2-3 years a number of articles have appeared in various industrial publications concerning infrared surveys. However, all of the articles have dealt with the technical aspects of infrared inspections, with the economics either completely neglected or mentioned only in passing. I believe that in the real industrial world it is the economic benefits of a technology that allow the product of that technology to reach the market and become a success, and not the fact that a technology is useful per se. In this presentation, I shall be focusing primarily on the major economic aspects of the surveys and what the end results really represent in terms of economic benefits. Once the economic benefits of these inspections are clearly understood, it will be readily apparent why the industrial use of these inspections is developing rapidly.

Duch, A. A.

1979-01-01T23:59:59.000Z

239

Infrared emitting device and method  

DOE Patents (OSTI)

An infrared emitting device and method. The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns.

Kurtz, Steven R. (Albuquerque, NM); Biefeld, Robert M. (Albuquerque, NM); Dawson, L. Ralph (Albuquerque, NM); Howard, Arnold J. (Albuquerque, NM); Baucom, Kevin C. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

240

Water vapour in the atmosphere of a transiting extrasolar planet  

E-Print Network (OSTI)

Water is predicted to be among, if not the most abundant molecular species after hydrogen in the atmospheres of close-in extrasolar giant planets (hot-Jupiters) Several attempts have been made to detect water on an exoplanet, but have failed to find compelling evidence for it or led to claims that should be taken with caution. Here we report an analysis of recent observations of the hot-Jupiter HD189733b taken during the transit, where the planet passed in front of its parent star. We find that absorption by water vapour is the most likely cause of the wavelength-dependent variations in the effective radius of the planet at the infrared wavelengths 3.6, 5.8 and 8 microns. The larger effective radius observed at visible wavelengths may be due to either star variability or the presence of clouds/hazes. We explain the most recent thermal infrared observations of the planet during secondary transit behind the star, reporting a non-detection of water on HD189733b, as being a consequence of the nearly isothermal vertical profile of the planet.s atmosphere. Our results show that water is detectable on extrasolar planets using the primary transit technique and that the infrared should be a better wavelength region than the visible, for such searches.

Giovanna Tinetti; Alfred Vidal-Madjar; Mao-Chang Liang; Jean-Philippe Beaulieu; Yuk Yung; Sean Carey; Robert J. Barber; Jonathan Tennyson; Ignasi Ribas; Nicole Allard; Gilda E. Ballester; David K. Sing; Franck Selsis

2007-07-20T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Infrared Thermography Measurements of Window Thermal Test Specimen...  

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

Infrared Thermography Measurements of Window Thermal Test Specimen: Surface Temperatures Title Infrared Thermography Measurements of Window Thermal Test Specimen: Surface...

242

Precomputed atmospheric scattering  

Science Conference Proceedings (OSTI)

We present a new and accurate method to render the atmosphere in real time from any viewpoint from ground level to outer space, while taking Rayleigh and Mie multiple scattering into account. Our method reproduces many effects of the scattering of light, ...

Eric Bruneton; Fabrice Neyret

2008-06-01T23:59:59.000Z

243

ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement  

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

An Integrated Column Description An Integrated Column Description of the Atmosphere An Integrated Column Description of the Atmosphere Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Pacific Northwest National Laboratory Pacific Northwest National Laboratory The "other" Washington ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Credits to Credits to * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Outline Outline * A little philosophy

244

About ÂŤEffectiveÂŽ Height of the Aerosol Atmosphere in Visible and IR Wavelength Range  

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

"Effective" Height of the Aerosol Atmosphere in "Effective" Height of the Aerosol Atmosphere in Visible and IR Wavelength Range V. N. Uzhegov, D. M. Kabanov, M. V. Panchenko, Yu. A. Pkhalagov, and S. M. Sakerin Institute of Atmospheric Optics Tomsk, Russia Introduction Aerosol component of the atmosphere is one of the important factors affecting the radiation budget of the space - atmosphere - underlying surface system in visible and infrared (IR) wavelength ranges. It is extremely important to take into account the contribution of this component into the extinction of solar radiation under cloudless sky conditions. Sometimes it is important to know not only the total value of the aerosol component of extinction, but also to have the possibility to estimate the "effective" height of

245

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

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

Infrared Land Surface Emissivity in the Vicinity Infrared Land Surface Emissivity in the Vicinity of the ARM SGP Central Facility R. O. Knuteson, R. G. Dedecker, W. F. Feltz, B. J. Osbourne, H. E. Revercomb, and D. C. Tobin Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin Introduction The University of Wisconsin Space Science and Engineering Center (UW-SSEC) has developed, under National Aeronautics and Space Administration (NASA) funding, a model for the infrared land surface emissivity (LSE) in the vicinity of the U.S. Department of Energy's (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) Central Facility (CF) in North Central Oklahoma. The UW-Madison LSE model is part of the ARM best

246

Definition: Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys Jump to: navigation, search Dictionary.png Near Infrared Surveys Near infrared surveys refer to multi- and hyperspectral data collected in the region just outside wavelengths detectable by the human eye. Near infrared wavelengths are generally considered to be between approximately 0.75-1.4 micrometers. View on Wikipedia Wikipedia Definition Infrared (IR) light is electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometres (nm) to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz, and includes most of the thermal radiation emitted by objects near room temperature. Infrared light is emitted or absorbed by molecules

247

Hydrostatic Adjustment in Nonisothermal Atmospheres  

Science Conference Proceedings (OSTI)

The author examines hydrostatic adjustment due to heating in two nonisothermal atmospheres. In the first case both the temperature and lapse rate decrease with height; in the second case the atmosphere consists of a troposphere with constant ...

Dean G. Duffy

2003-01-01T23:59:59.000Z

248

Efficient rendering of atmospheric phenomena  

Science Conference Proceedings (OSTI)

Rendering of atmospheric bodies involves modeling the complex interaction of light throughout the highly scattering medium of water and air particles. Scattering by these particles creates many well-known atmospheric optical phenomena including rainbows, ...

Kirk Riley; David S. Ebert; Martin Kraus; Jerry Tessendorf; Charles Hansen

2004-06-01T23:59:59.000Z

249

Coherent infrared imaging camera (CIRIC)  

SciTech Connect

New developments in 2-D, wide-bandwidth HgCdTe (MCT) and GaAs quantum-well infrared photodetectors (QWIP) coupled with Monolithic Microwave Integrated Circuit (MMIC) technology are now making focal plane array coherent infrared (IR) cameras viable. Unlike conventional IR cameras which provide only thermal data about a scene or target, a coherent camera based on optical heterodyne interferometry will also provide spectral and range information. Each pixel of the camera, consisting of a single photo-sensitive heterodyne mixer followed by an intermediate frequency amplifier and illuminated by a separate local oscillator beam, constitutes a complete optical heterodyne receiver. Applications of coherent IR cameras are numerous and include target surveillance, range detection, chemical plume evolution, monitoring stack plume emissions, and wind shear detection.

Hutchinson, D.P.; Simpson, M.L.; Bennett, C.A.; Richards, R.K.; Emery, M.S.; Crutcher, R.I.; Sitter, D.N. Jr.; Wachter, E.A.; Huston, M.A.

1995-07-01T23:59:59.000Z

250

Multi-channel infrared thermometer  

DOE Patents (OSTI)

A device for measuring the two-dimensional temperature profile of a surface comprises imaging optics for generating an image of the light radiating from the surface; an infrared detector array having a plurality of detectors; and a light pipe array positioned between the imaging optics and the detector array for sampling, transmitting, and distributing the image over the detector surfaces. The light pipe array includes one light pipe for each detector in the detector array.

Ulrickson, Michael A. (East Windsor, NJ)

1986-01-01T23:59:59.000Z

251

Ferroelectric infrared detector and method  

DOE Patents (OSTI)

An apparatus and method are provided for sensing infrared radiation. The apparatus includes a sensor element that is positioned in a magnetic field during operation to ensure a .lamda. shaped relationship between specific heat and temperature adjacent the Curie temperature of the ferroelectric material comprising the sensor element. The apparatus is operated by inducing a magnetic field on the ferroelectric material to reduce surface charge on the element during its operation.

Lashley, Jason Charles (Sante Fe, NM); Opeil, Cyril P. (Chestnut Hill, MA); Smith, James Lawrence (Los Alamos, NM)

2010-03-30T23:59:59.000Z

252

Infrared emitting device and method  

DOE Patents (OSTI)

The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns. 8 figs.

Kurtz, S.R.; Biefeld, R.M.; Dawson, L.R.; Howard, A.J.; Baucom, K.C.

1997-04-29T23:59:59.000Z

253

ARM - Measurement - Atmospheric turbulence  

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

turbulence turbulence 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 : Atmospheric turbulence High frequency velocity fluctuations that lead to turbulent transport of momentum, heat, mositure, and passive scalars, and often expressed in terms of variances and covariances. Categories Atmospheric State, Surface Properties 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 CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

254

Differential atmospheric tritium sampler  

DOE Patents (OSTI)

An atmospheric tritium sampler is provided which uses a carrier gas comprised of hydrogen gas and a diluting gas, mixed in a nonexplosive concentration. Sample air and carrier gas are drawn into and mixed in a manifold. A regulator meters the carrier gas flow to the manifold. The air sample/carrier gas mixture is pulled through a first moisture trap which adsorbs water from the air sample. The mixture then passes through a combustion chamber where hydrogen gas in the form of H.sub.2 or HT is combusted into water. The manufactured water is transported by the air stream to a second moisture trap where it is adsorbed. The air is then discharged back into the atmosphere by means of a pump.

Griesbach, Otto A. (Langhorne, PA); Stencel, Joseph R. (Skillman, NJ)

1990-01-01T23:59:59.000Z

255

Atmospheric Release Advisory Capability  

SciTech Connect

The Atmospheric Release Advisory Capability (ARAC) project is a Department of Energy (DOE) sponsored real-time emergency response service available for use by both federal and state agencies in case of a potential or actual atmospheric release of nuclear material. The project, initiated in 1972, is currently evolving from the research and development phase to full operation. Plans are underway to expand the existing capability to continuous operation by 1984 and to establish a National ARAC Center (NARAC) by 1988. This report describes the ARAC system, its utilization during the past two years, and plans for its expansion during the next five to six years. An integral part of this expansion is due to a very important and crucial effort sponsored by the Defense Nuclear Agency to extend the ARAC service to approximately 45 Department of Defense (DOD) sites throughout the continental US over the next three years.

Dickerson, M.H.; Gudiksen, P.H.; Sullivan, T.J.

1983-02-01T23:59:59.000Z

256

Remotely Controlled, Continuous Observations of Infrared Radiance with the CSIRO/ARM Mark II Radiometer at the SGP CART Site  

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

Remotely Controlled, Continuous Observations of Remotely Controlled, Continuous Observations of Infrared Radiance with the CSIRO/ARM Mark II Radiometer at the SGP CART Site C. M. R. Platt and R. T. Austin Department of Atmospheric Science Colorado State University Fort Collins, Colorado C. M. R. Platt and J. A. Bennett Commonwealth Scientific and Industrial Research Organization Atmospheric Research Aspendale, Victoria, Australia Abstract The Commonwealth Scientific and Industrial Research Organization/Atmospheric Radiation Measurement (CSIRO/ARM) Program Mark II infrared (IR) filter radiometer operated continuously at the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site for a period of five weeks. Data of high quality were obtained by remote operation and data transfer with no evidence of spurious

257

Atmospheric Mercury Research Update  

Science Conference Proceedings (OSTI)

This report is a summary and analysis of research findings on utility and environmental mercury from 1997 to 2003. The update categorizes and describes recent work on mercury in utility-burned coal and its route through power plants, the measures for its control, and its fate in the environment following emissions from utility stacks. This fate includes atmospheric chemistry and transport, deposition to land and water surfaces, aquatic cycling, the dynamics of mercury in freshwater fish food webs, and th...

2004-03-30T23:59:59.000Z

258

ORISE: Climate and Atmospheric Research  

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

Climate and Atmospheric Research Climate and Atmospheric Research Capabilities Overview U.S. Climate Reference Network U.S. Historical Climate Network Contact Us Oak Ridge Institute for Science Education Climate and Atmospheric Research The Oak Ridge Institute for Science and Education (ORISE) partners with the National Oceanic and Atmospheric Administration's Atmospheric Turbulence and Diffusion Division (ATDD) to conduct climate research focused on issues of national and global importance. Research is performed with personnel support from ORISE's Independent Environmental Assessment and Verification (IEAV) programs, as well as in collaboration with scientists and engineers from Oak Ridge National Laboratory (ORNL), and numerous other organizations, government agencies, universities and private research institutions.

259

Atmospheric attenuation of solar radiation  

DOE Green Energy (OSTI)

The attenuation of solar radiation by the atmosphere between the heliostat and receiver of a Central Receiver solar energy system has been computed for a number of atmospheric conditions and tower-heliostat distances. The most important atmospheric variable is found to be the atmospheric aerosol content. No dependence of atmospheric water vapor is found and only a weak dependence on solar zenith angle. For a 500 m heliostat-tower distance two to four percent reductions are expected under typical desert conditions (50 to 120 km visibility). The reduction is approximately linear with heliostat-tower distance. A representative value of the attenuation coefficient is 0.051 km/sup -1/.

Randall, C.M.

1977-05-18T23:59:59.000Z

260

A Simulated Future Atmospheric Observation Database Including ATOVS, ASCAT, and DWL  

Science Conference Proceedings (OSTI)

A database for study of the impact of Doppler wind lidar data on numerical weather prediction in Observation System Simulation Experiments was created. Five Doppler wind lidar scenarios, TIROS Operational Vertical Sounder, Advanced TIROS ...

Bernd Dieter Becker; Hervé Roquet; Ad Stoffelen

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

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

Science Conference Proceedings (OSTI)

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

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

2005-04-01T23:59:59.000Z

262

PNNL: FCSD: Atmospheric Sciences & Global Change: Programs &...  

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

Programs & Facilities Atmospheric Measurements Laboratory Atmospheric Radiation Measurement (ARM) Program and ARM Climate Research Facility ARM Aerial Facility Environmental...

263

PNNL: Atmospheric Sciences & Global Change - Frontiers in Global Change  

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

Frontiers in Global Change Frontiers in Global Change Dr. Thanos Nenes Dr. Thanos Nenes Aerosol-Cloud Interactions: The Elusive Component of Climate Change Dr. Thanos Nenes Professor & Georgia Power Faculty Scholar, School of Earth & Atmospheric Sciences, School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA Thursday, August 1, 2013 EMSL Auditorium 10:00AM The effect of human activities on climate is one of the most important issues facing society. Humans influence climate in many ways. Emissions of greenhouse gases (GHGs) tend to warm climate, by reducing the amount of infrared radiation that is emitted to space. Increased levels of suspended atmospheric particles ("aerosols") exert a net cooling effect by directly scattering and absorption of solar radiation (the "aerosol direct climatic

264

Magnetic Scaling Laws for the Atmospheres of Hot Giant Exoplanets  

E-Print Network (OSTI)

We present scaling laws for advection, radiation, magnetic drag and ohmic dissipation in the atmospheres of hot giant exoplanets. In the limit of weak thermal ionization, ohmic dissipation increases with the planetary equilibrium temperature (T_eq >~ 1000 K) faster than the insolation power does, eventually reaching values >~ 1% of the insolation power, which may be sufficient to inflate the radii of hot Jupiters. At higher T_eq values still, magnetic drag rapidly brakes the atmospheric winds, which reduces the associated ohmic dissipation power. For example, for a planetary field strength B=10G, the fiducial scaling laws indicate that ohmic dissipation exceeds 1% of the insolation power over the equilibrium temperature range T_eq ~ 1300-2000 K, with a peak contribution at T_eq ~ 1600 K. Evidence for magnetically dragged winds at the planetary thermal photosphere could emerge in the form of reduced longitudinal offsets for the dayside infrared hotspot. This suggests the possibility of an anticorrelation betwe...

Menou, Kristen

2011-01-01T23:59:59.000Z

265

Passive infrared bullet detection and tracking  

DOE Patents (OSTI)

An apparatus and method for passively detecting a projectile such as, for example, a bullet using a passive infrared detector. A passive infrared detector is focused onto a region in which a projectile is expected to be located. Successive images of infrared radiation in the region are recorded. Background infrared radiation present in the region is suppressed such that second successive images of infrared radiation generated by the projectile as the projectile passes through the region are produced. A projectile path calculator determines the path and other aspects of the projectile by using the second successive images of infrared radiation generated by the projectile. The present invention, in certain embodiments, also determines the origin of the path of the projectile and takes a photograph of the area surrounding the origin and/or fires at least one projectile at the area surrounding the origin of the path of the projectile.

Karr, T.J.

1994-12-31T23:59:59.000Z

266

Passive infrared bullet detection and tracking  

DOE Patents (OSTI)

An apparatus and method for passively detecting a projectile such as, for example, a bullet using a passive infrared detector. A passive infrared detector is focused onto a region in which a projectile is expected to be located. Successive images of infrared radiation in the region are recorded. Background infrared radiation present in the region is suppressed such that second successive images of infrared radiation generated by the projectile as the projectile passes through the region are produced. A projectile path calculator determines the path and other aspects of the projectile by using the second successive images of infrared radiation generated by the projectile. The present invention, in certain embodiments, also determines the origin of the path of the projectile and takes a photograph of the area surrounding the origin and/or fires at least one projectile at the area surrounding the origin of the path of the projectile. 9 figs.

Karr, T.J.

1997-01-21T23:59:59.000Z

267

Passive infrared bullet detection and tracking  

DOE Patents (OSTI)

An apparatus and method for passively detecting a projectile such as, for example, a bullet using a passive infrared detector. A passive infrared detector is focused onto a region in which a projectile is expected to be located. Successive images of infrared radiation in the region are recorded. Background infrared radiation present in the region is suppressed such that second successive images of infrared radiation generated by the projectile as the projectile passes through the region are produced. A projectile path calculator determines the path and other aspects of the projectile by using the second successive images of infrared radiation generated by the projectile. The present invention, in certain embodiments, also determines the origin of the path of the projectile and takes a photograph of the area surrounding the origin and/or fires at least one projectile at the area surrounding the origin of the path of the projectile.

Karr, Thomas J. (Alamo, CA)

1997-01-01T23:59:59.000Z

268

Infra-red signature neutron detector  

SciTech Connect

A method of detecting an activator, the method including impinging with an activator a receptor material that includes a photoluminescent material that generates infrared radiation and generating a by-product of a nuclear reaction due to the activator impinging the receptor material. The method further includes generating light from the by-product via the Cherenkov effect, wherein the light activates the photoluminescent material so as to generate the infrared radiation. Identifying a characteristic of the activator based on the infrared radiation.

Bell, Zane William (Oak Ridge, TN); Boatner, Lynn Allen (Oak Ridge, TN)

2009-10-13T23:59:59.000Z

269

Modeling Infrared and Combination Infrared-Microwave Heating of Foods in an Oven .  

E-Print Network (OSTI)

??A quantitative, model-based understanding of heat exchange in infrared and combined infrared-microwave heating of food inside an oven is developed. The research is divided into… (more)

Frangipani Almeida, Marialuci

2004-01-01T23:59:59.000Z

270

Correcting Calibrated Infrared Sky Imagery for the Effect of an Infrared Window  

Science Conference Proceedings (OSTI)

A method is demonstrated for deriving a correction for the effects of an infrared window when used to weatherproof a radiometrically calibrated thermal infrared imager. The technique relies on initial calibration of two identical imagers without ...

Paul W. Nugent; Joseph A. Shaw; Nathan J. Pust; Sabino Piazzolla

2009-11-01T23:59:59.000Z

271

NIST Complete hemispherical infrared laser-based ...  

Science Conference Proceedings (OSTI)

... A custom instrument, the Complete Hemispherical infrared Laser-based Reflectometer ... using light input from a selection of lasers covering the ...

2010-10-05T23:59:59.000Z

272

Atmospheric Radiation Measurement Climate Research Facility (ACRF) Annual Report 2008  

SciTech Connect

The Importance of Clouds and Radiation for Climate Change: The Earth’s surface temperature is determined by the balance between incoming solar radiation and thermal (or infrared) radiation emitted by the Earth back to space. Changes in atmospheric composition, including greenhouse gases, clouds, and aerosols, can alter this balance and produce significant climate change. Global climate models (GCMs) are the primary tool for quantifying future climate change; however, there remain significant uncertainties in the GCM treatment of clouds, aerosol, and their effects on the Earth’s energy balance. In 1989, the U.S. Department of Energy (DOE) Office of Science created the Atmospheric Radiation Measurement (ARM) Program to address scientific uncertainties related to global climate change, with a specific focus on the crucial role of clouds and their influence on the transfer of radiation in the atmosphere. To reduce these scientific uncertainties, the ARM Program uses a unique twopronged approach: • The ARM Climate Research Facility, a scientific user facility for obtaining long-term measurements of radiative fluxes, cloud and aerosol properties, and related atmospheric characteristics in diverse climate regimes; and • The ARM Science Program, focused on the analysis of ACRF and other data to address climate science issues associated with clouds, aerosols, and radiation, and to improve GCMs. This report provides an overview of each of these components and a sample of achievements for each in fiscal year (FY) 2008.

LR Roeder

2008-12-01T23:59:59.000Z

273

An Accurate Radiative Heating and Cooling Algorithm for Use in a Dynamical Model of the Middle Atmosphere  

Science Conference Proceedings (OSTI)

An infrared radiative heating and cooling algorithm designed to be used with dynamical models of the middle atmosphere is described. A Curtis matrix is used to compute cooling by the 15 and 10 ?m bands of carbon dioxide. Escape of radiation to ...

W. M. Wehrbein; C. B. Leovy

1982-07-01T23:59:59.000Z

274

EMSL: Science: Atmospheric Aerosol Systems  

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

Atmospheric Aerosol Systems Atmospheric Aerosol Systems atmospheric logo Nighttime enhancement of nitrogen-containing organic compounds, or NOC Observed nighttime enhancement of nitrogen-containing organic compounds, or NOC, showed evidence of being formed by reactions that transform carbonyls into imines. The Atmospheric Aerosol Systems Science Theme focuses on understanding the chemistry, physics and molecular-scale dynamics of aerosols for model parameterization to improve the accuracy of climate model simulations and develop a predictive understanding of climate. By elucidating the role of natural and anthropogenic regional and global climate forcing mechanisms, EMSL can provide DOE and others with the ability to develop cost-effective strategies to monitor, control and mitigate them.

275

COBE Observations of the Cosmic Infrared Background  

E-Print Network (OSTI)

The Diffuse InfraRed Background Experiment on COBE measured the total infrared signal seen from space at a distance of 1 astronomical unit from the Sun. Using time variations as the Earth orbits the Sun, it is possible to remove most of the foreground signal produced by the interplanetary dust cloud [zodiacal light]. By correlating the DIRBE signal with the column density of atomic hydrogen measured using the 21 cm line, it is possible to remove most of the foreground signal produced by interstellar dust, although one must still be concerned by dust associated with H_2 (molecular gas) and H II (the warm ionized medium). DIRBE was not able to determine the CIRB in the 5-60 micron wavelength range, but did detect both a far infrared background and a near infrared background. The far infrared background has an integrated intensity of about 34 nW/m^2/sr, while the near infrared and optical extragalactic background has about 59 nW/m^2/sr. The Far InfraRed Absolute Spectrophotometer (FIRAS) on COBE has been used to constrain the long wavelength tail of the far infrared background but a wide range of intensities at 850 microns are compatible with the FIRAS data. Thus the fraction of the CIRB produced by SCUBA sources has large uncertainties in both the numerator and the denominator.

E. L. Wright

2003-06-03T23:59:59.000Z

276

ELSEVIER AtmosphericResearch 38 (1995) 207-235 ATMOSPHERIC  

E-Print Network (OSTI)

ELSEVIER AtmosphericResearch 38 (1995) 207-235 ATMOSPHERIC RESEARCH On the parameterization of ice and water substance mixing ratio fields were only strongly altered by turning off the ice phase of these schemes includes ice processes. But in mid- latitudes and also in tropics the ice phase is an important

Moelders, Nicole

277

Atmospheric Chemistry and Physics  

E-Print Network (OSTI)

Abstract. A 3-D chemistry-transport model has been applied to the Mexico City metropolitan area to investigate the origin of elevated levels of non-fossil (NF) carbonaceous aerosols observed in this highly urbanized region. High time resolution measurements of the fine aerosol concentration and composition, and 12 or 24 h integrated 14 C measurements of aerosol modern carbon have been performed in and near Mexico City during the March 2006 MILAGRO field experiment. The non-fossil carbon fraction (fNF), which is lower than the measured modern fraction (fM) due to the elevated 14 C in the atmosphere caused by nuclear bomb testing, is estimated from the measured fM and the source-dependent information on modern carbon enrichment. The fNF contained in PM1 total carbon analyzed by a US team (f TC

unknown authors

2010-01-01T23:59:59.000Z

278

Atmospheric Corrosion Test Sites  

Science Conference Proceedings (OSTI)

Table 27   Some marine-atmospheric corrosion test sites around the world...Zealand Phia Marine 0.2 0.12 15.8 2.4 � � � � Greece Rafina Marine 0.2 0.12 13.6 1.0 � � � � Rhodes Marine 0.2 0.12 14.3 1.5 � � � � Netherlands Schagen Marine 2.4 1.5 17.0 2.0 � � � � Spain Almeria � 0.035 0.022 22.4 1.6 � � � � Cartagena � 0.050 0.031 5.2 1.9 � � � � La Coruña � 0.160 0.1 26.2 1.4...

279

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

280

Definition: Multispectral Thermal Infrared | Open Energy Information  

Open Energy Info (EERE)

Infrared Infrared Jump to: navigation, search Dictionary.png Multispectral Thermal Infrared This wavelength range senses heat energy from the Earth's surface. It can be used to sense surface temperature, including anomalies associated with active geothermal or volcanic systems. Both multispectral and hyperspectral remote sensing observations are available. This range can also be used to map mineralogy associate with common rock-forming silicates.[1][2] View on Wikipedia Wikipedia Definition References ↑ http://en.wikipedia.org/wiki/Thermal_infrared_spectroscopy ↑ http://asterweb.jpl.nasa.gov/ Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Multispectral_Thermal_Infrared&oldid=601561

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Infrared emission from interplanetary dust  

Science Conference Proceedings (OSTI)

Standard models of the interplanetary dust emission fail to account satisfactorily for IR observations. A new model of the dust, based on very simple assumptions on the grain structure (spherical and homogeneous) and chemical composition (astronomical silicates, graphite, blackbodies) is developed. Updated values of the refractive indexes have been included in the analysis. The predictions of the model (absolute values of the fluxes, spectral shape, elongation dependence of the emission) have then been compared with all the available IR observations performed by the ARGO (balloon-borne experiment by University of Rome), AFGL and Zodiacal Infrared Project (ZIP) (rocket experiments by Air Force Geophysics Laboratory, Bedford, Mass.), and IRAS satellite. Good agreement is found when homogeneous data sets from single experiments (e.g., ZIP and ARGO) are considered separately. 19 references.

Temi, P.; De Bernardis, P.; Masi, S.; Moreno, G.; Salama, A.

1989-02-01T23:59:59.000Z

282

Imaging Atmospheric Cerenkov Telescopes: Techniques and Results  

E-Print Network (OSTI)

The hunt for cosmic TeV particle accelerators is prospering through Imaging Atmospheric Cerenkov Telescopes. We face challenges such as low light levels and MHz trigger rates, and the need to distinguish between particle air showers stemming from primary gamma rays and those due to the hadronic cosmic ray background. Our test beam is provided by the Crab Nebula, a steady accelerator of particles to energies beyond 20 TeV. Highly variable gamma-ray emission, coincident with flares at longer wavelengths, is revealing the particle acceleration mechanisms at work in the relativistic jets of Active Galaxies. These 200 GeV to 20 TeV photons propagating over cosmological distances allow us to place a limit on the infra-red background linked to galaxy formation and, some speculate, to the decay of massive relic neutrinos. Gamma rays produced in neutralino annihilation or the evaporation of primordial black holes may also be detectable. These phenomena and a zoo of astrophysical objects will be the targets of the next generation multi-national telescope facilities.

S. M. Bradbury

2001-01-30T23:59:59.000Z

283

Atmospheric Radiation Measurement (ARM) Climate Research Facility and Atmospheric  

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

Atmospheric Radiation Measurement (ARM) Atmospheric Radiation Measurement (ARM) Climate Research Facility and Atmospheric System Research (ASR) Science and Infrastructure Steering Committee CHARTER June 2012 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not

284

1  

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

Cloudy Assessment within an Atmospheric Infrared Cloudy Assessment within an Atmospheric Infrared Sounder Pixel by Combining Moderate Resolution Spectroradiometer and Atmospheric Radiation Measurement Program Ground-Based Lidar and Radar Measurements L. Adhikari and Z. Wang University of Wyoming Laramie, Wyoming D. Whiteman National Aeronautics and Space Administration - Goddard Space Flight Center Greenbelt, Maryland Introduction Water vapor is an important component of the atmosphere in terms of its effects on the global radiation budget through its interaction with both the terrestrial long wave radiation and short wave solar radiation through cloud formation. It is one of the most radiatively active constituent of the atmosphere, ranging from shortwave solar radiances through the broadband infrared (Soden and Bretherton 1993) to

285

Infrared absorption strengths of potential gaseous diffusion plant coolants and related reaction products  

SciTech Connect

The DOE gaseous diffusion plant complex makes extensive use of CFC-114 as a primary coolant. As this material is scheduled for production curtailment within the next few years, a search for substitutes is underway, and apparently workable alternatives have been found and are under testing. The presently favored substitutes, FC-c3l8 and FC-3110, satisfy ozone depletion and operational chemical compatibility concerns, but will be long-lived greenhouse gases, and thus may be regulated on that basis in the future. A further search is therefore underway for compounds with shorter atmospheric lifetimes which could otherwise satisfy operational physical and chemical requirements. A number of such candidates are in the process of being screened for chemical compatibility in a fluorinating environment. This document presents infrared spectral data developed and used in that study for candidates recently examined, and also for many of their fluorination reaction products. The data include gas-phase infrared spectra, quantitative peak intensities as a function of partial pressure, and integrated absorbance strength in the IR-transparent atmospheric window of interest to global warming modeling. Combining this last property with literature or estimated atmospheric lifetimes, rough estimates of global warming potential for these compounds are also presented.

Trowbridge, L.D.; Angel, E.C.

1993-05-01T23:59:59.000Z

286

Mountain Forces and the Atmospheric Energy Budget  

Science Conference Proceedings (OSTI)

Although mountains are generally thought to exert forces on the atmosphere, the related transfers of energy between earth and atmosphere are not represented in standard energy equations of the atmosphere. It is shown that the axial rotation of the ...

Joseph Egger

2011-11-01T23:59:59.000Z

287

Baiu rainband termination in atmospheric and atmosphere-ocean models  

Science Conference Proceedings (OSTI)

Baiu rainband is a summer rainband stretching from eastern China through Japan towards the Northwest Pacific. The climatological termination of the Baiu rainband is investigated using Japanese 25-year ReAnalysis (JRA25), a stand-alone atmospheric ...

Akira Kuwano-Yoshida; Bunmei Taguchi; Shang-Ping Xie

288

Krypton-85 in the atmosphere  

E-Print Network (OSTI)

Measurement results are presented on 85Kr content in the atmosphere over the European part of Russia in 1971-1995 based on the analysis of the commercial krypton, which is separated from air by industrial plants. Our results are by 15 per cent lower then 85Kr activites observed over West Europe. According our prediction by 2030 85Kr content in the atmosphere over Europe will amount to 1,5-3 Bq in m3 air. Average 85Kr release to the atmosphere from regeneration of spent nuclear fuel (SNF) is estimated, some 180 TBq per a ton SNF. It is advisable to recommence monitoring of 85Kr content within Russia.

A. T. Korsakov; E. G. Tertyshnik

2013-07-09T23:59:59.000Z

289

Krypton-85 in the atmosphere  

E-Print Network (OSTI)

Measurement results are presented on 85Kr content in the atmosphere over the European part of Russia in 1971-1995 based on the analysis of the commercial krypton, which is separated from air by industrial plants. Our results are by 15 per cent lower then 85Kr activites observed over West Europe. According our prediction by 2030 85Kr content in the atmosphere over Europe will amount to 1,5-3 Bq in m3 air. Average 85Kr release to the atmosphere from regeneration of spent nuclear fuel (SNF) is estimated, some 180 TBq per a ton SNF. It is advisable to recommence monitoring of 85Kr content within Russia.

Korsakov, A T

2013-01-01T23:59:59.000Z

290

Molecular Hydrogen in Infrared Cirrus  

E-Print Network (OSTI)

We combine data from our recent FUSE survey of interstellar molecular hydrogen absorption toward 50 high-latitude AGN with COBE-corrected IRAS 100 micron emission maps to study the correlation of infrared cirrus with H2. A plot of the H2 column density vs. IR cirrus intensity shows the same transition in molecular fraction, f_H2, as seen with total hydrogen column density, N_H. This transition is usually attributed to H2 self-shielding, and it suggests that many diffuse cirrus clouds contain H2 in significant fractions, f_H2 = 1-30%. These clouds cover approximately 50% of the northern sky at latitudes b > 30 degrees, at temperature-corrected 100 micron intensities D_100 > 1.5 MJy/sr. The sheetlike cirrus clouds, with hydrogen densities n_H > 30 cm^-3, may be compressed by dynamical processes at the disk-halo interface, and they are conducive to H2 formation on grain surfaces. Exploiting the correlation between N(H2) and 100 micron intensity, we estimate that cirrus clouds at b > 30 contain approximately 3000 M_sun in H2. Extrapolated over the inner Milky Way, the cirrus may contain 10^7 M_sun of H2 and 10^8 M_sun in total gas mass. If elevated to 100 pc, their gravitational potential energy is ~10^53 erg.

Kristen Gillmon; J. Michael Shull

2005-07-25T23:59:59.000Z

291

Nano-Mechanical Infrared Detectors  

SciTech Connect

Infrared radiation (IR) is electromagnetic radiation with wavelengths between 0.7 m and 100 m. It extends from visible light to THz waves. Because fundamentally different phenomena can be observed within the IR region, four sub-bands are usually distinguished: near-IR (NIR), mid-wave-IR (MWIR), long-wave-IR (LWIR) and very long-wave-IR (VLWIR). Although somewhat different definitions exist in literature, wavelengths from 0.7 m to 2.5 m belong to NIR, from 2.5 m to 8 m belong to MWIR, from 8 m to 14 m belong to LWIR and wavelengths above 14 m belong to VLWIR. The IR photon energies range from 1.77 eV for 0.7 m photons to 0.0124 eV for 100 m photons. The significance and practical applications of IR detectors are related to two distinct phenomena: emission of electromagnetic waves by all objects at T > 0 K and interaction of electromagnetic waves with vibrational modes of molecular bonds. Thermal imaging and molecular spectroscopy are, respectively, the two major fields that critically depend on the ability to detect IR radiation.

Grbovic, Dragoslav [ORNL; Lavrik, Nickolay V [ORNL; Rajic, Slobodan [ORNL; Hunter, Scott [Oak Ridge National Laboratory (ORNL); Hunt, Rodney Dale [ORNL; Datskos, Panos G [ORNL

2011-01-01T23:59:59.000Z

292

Ralph: A Visible/Infrared Imager for the New Horizons Pluto/Kuiper Belt Mission  

E-Print Network (OSTI)

The New Horizons instrument named Ralph is a visible/near infrared multi-spectral imager and a short wavelength infrared spectral imager. It is one of the core instruments on New Horizons, NASA's first mission to the Pluto/Charon system and the Kuiper Belt. Ralph combines panchromatic and color imaging capabilities with IR imaging spectroscopy. Its primary purpose is to map the surface geology and composition of these objects, but it will also be used for atmospheric studies and to map the surface temperature. It is a compact, low-mass (10.5 kg), power efficient (7.1 W peak), and robust instrument with good sensitivity and excellent imaging characteristics. Other than a door opened once in flight, it has no moving parts. These characteristics and its high degree of redundancy make Ralph ideally suited to this long-duration flyby reconnaissance mission.

Reuter, Dennis C; Scherrer, John; Jennings, Donald E; Baer, James; Hanley, John; Hardaway, Lisa; Lunsford, Allen; McMuldroch, Stuart; Moore, Jeffrey; Olkin, Cathy; Parizek, Robert; Reitsma, Harold; Sabatke, Derek; Spencer, John; Stone, John; Throop, Henry; Van Cleve, Jeffrey; Weigle, Gerald E; Young, Leslie A

2007-01-01T23:59:59.000Z

293

Ralph: A Visible/Infrared Imager for the New Horizons Pluto/Kuiper Belt Mission  

E-Print Network (OSTI)

The New Horizons instrument named Ralph is a visible/near infrared multi-spectral imager and a short wavelength infrared spectral imager. It is one of the core instruments on New Horizons, NASA's first mission to the Pluto/Charon system and the Kuiper Belt. Ralph combines panchromatic and color imaging capabilities with IR imaging spectroscopy. Its primary purpose is to map the surface geology and composition of these objects, but it will also be used for atmospheric studies and to map the surface temperature. It is a compact, low-mass (10.5 kg), power efficient (7.1 W peak), and robust instrument with good sensitivity and excellent imaging characteristics. Other than a door opened once in flight, it has no moving parts. These characteristics and its high degree of redundancy make Ralph ideally suited to this long-duration flyby reconnaissance mission.

Dennis C. Reuter; S. Alan Stern; John Scherrer; Donald E. Jennings; James Baer; John Hanley; Lisa Hardaway; Allen Lunsford; Stuart McMuldroch; Jeffrey Moore; Cathy Olkin; Robert Parizek; Harold Reitsma; Derek Sabatke; John Spencer; John Stone; Henry Throop; Jeffrey Van Cleve; Gerald E. Weigle; Leslie A. Young

2007-09-26T23:59:59.000Z

294

Uncooled infrared photon detector and multicolor infrared detection using microoptomechanical sensors  

DOE Patents (OSTI)

Systems and methods for infrared detection are described. An optomechanical photon detector includes a semiconductor material and is based on measurement of a photoinduced lattice strain. A multicolor infrared sensor includes a stack of frequency specific optomechanical detectors. The stack can include one, or more, of the optomechanical photon detectors that function based on the measurement of photoinduced lattice strain. The systems and methods provide advantages in that rapid, sensitive multicolor infrared imaging can be performed without the need for a cooling subsystem.

Datskos, Panagiotis G. (Knoxville, TN); Rajic, Solobodan (Knoxville, TN); Datskou, Irene C. (Knoxville, TN)

1999-01-01T23:59:59.000Z

295

Science and applications of infrared semiconductor nanocrystals  

E-Print Network (OSTI)

In this work we study several applications of semiconductor nanocrystals (NCs) with infrared band gaps. In the first half, we explore the physics of two systems with applications in NC based photovoltaics. The physics of ...

Geyer, Scott Mitchell

2010-01-01T23:59:59.000Z

296

High-Density-Infrared Transient Liquid Coatings  

Science Conference Proceedings (OSTI)

Infrared energy is the portion of the electromagnetic spectrum between 0.78 mm ..... that may bring to the market new materials that cannot be produced economically ... For more information, contact C.A. Blue, Oak Ridge National Laboratory, ...

297

Rapid infrared heating of a surface  

DOE Patents (OSTI)

High energy flux infrared heaters are used to treat an object having a surface section and a base section such that a desired characteristic of the surface section is physically, chemically, or phasically changed while the base section remains unchanged.

Sikka, Vinod K. (Oak Ridge, TN); Blue, Craig A. (Concord, TN); Ohriner, Evan Keith (Knoxville, TN)

2001-01-01T23:59:59.000Z

298

Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys (Redirected from Thermal And-Or Near Infrared) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Near Infrared Surveys Details Activities (18) Areas (14) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 450.0045,000 centUSD 0.45 kUSD 4.5e-4 MUSD 4.5e-7 TUSD / sq. mile Median Estimate (USD): 800.0080,000 centUSD 0.8 kUSD 8.0e-4 MUSD 8.0e-7 TUSD / sq. mile High-End Estimate (USD): 1,350.00135,000 centUSD 1.35 kUSD 0.00135 MUSD 1.35e-6 TUSD / sq. mile

299

Synchrotron Infrared Unveils a Mysterious Microbial Community  

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

Synchrotron Infrared Unveils a Synchrotron Infrared Unveils a Mysterious Microbial Community Synchrotron Infrared Unveils a Mysterious Microbial Community Print Tuesday, 22 January 2013 00:00 A cold sulfur spring in Germany is the only place where archaea are known to dominate bacteria in a microbial community. How this unique community thrives and the lessons it may hold for understanding global carbon and sulfur cycles are beginning to emerge from research by the University of Regensburg's Christine Moissl-Eichinger and her colleagues, including Advanced Light Source guest Alex Probst. Crucial microbial biochemistry was done at Berkeley Lab by Hoi-Ying Holman, director of the Berkeley Synchrotron Infrared Structural Biology facility, and her staff at the ALS, and by Phylochip inventors Todd DeSantis and Gary Anderson.

300

NIST Infrared laser gonioreflectometer instrument (ILGRI)  

Science Conference Proceedings (OSTI)

... stable CO 2 , near infrared diode, and continuously tunable OPO PPLN lasers) and a ... from 1 nW to 1 W. The addition of other laser wavelengths in ...

2010-10-05T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Rapid infrared heating of a surface  

DOE Patents (OSTI)

High energy flux infrared heaters are used to treat an object having a surface section and a base section such that a desired characteristic of the surface section is physically, chemically, or phasically changed while the base section remains unchanged.

Sikka, Vinod K. (Oak Ridge, TN); Blue, Craig A. (Concord, TN); Ohriner, Evan Keith (Knoxville, TN)

2002-01-01T23:59:59.000Z

302

Estimates for Infrared Transfer in Finite Clouds  

Science Conference Proceedings (OSTI)

Upper and lower bounds are computed for the infrared radiance within a cloud of finite size. The bounds are established by an iterative procedure, analogous to the iterative solution of the radiative transfer equation, except that at every ...

D. M. O'Brien

1986-02-01T23:59:59.000Z

303

Infrared Propagation Modeling beneath Marine Stratus Clouds  

Science Conference Proceedings (OSTI)

Airborne measurements of aerosol size distributions are used to determine the vertical profiles of infrared (IR) extinction and absorption coefficients and asymmetry factors in eight different maritime stratus cloud regimes during unstable ...

H. G. Hughes; C. R. Zeisse

2000-04-01T23:59:59.000Z

304

Low-Temperature Calibration of Infrared Thermometers  

Science Conference Proceedings (OSTI)

A method was developed for calibrating infrared thermometers to properly measure target temperatures ranging from ?70 to 0°C. Once calibrated for this range, the thermometer can then be used to measure the flux of thermal radiation from the sky. ...

B. A. Kimball; S. T. Mitchell

1984-12-01T23:59:59.000Z

305

Glossary Term - Composition of the Earth's Atmosphere  

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

the Earth's Atmosphere Source: Definition of the U.S. Standard Atmosphere (1976) CRC Handbook of Chemistry and Physics, 77th Edition Gas Formula Abundance percent by volume...

306

A Computational Thermodynamic Analysis of Atmospheric ...  

Science Conference Proceedings (OSTI)

Feb 1, 2001 ... The vacuum atmosphere is typically 0.1 atm. However, the vacuum atmosphere creates two major problems: air leakage and batch operation to ...

307

Infrared Issues in Graviton Higgs Theory  

E-Print Network (OSTI)

We investigate the one-loop infrared behaviour of the effective potential in minimally coupled graviton Higgs theory in Minkowski background. The gravitational analogue of one loop Coleman Weinberg effective potential turns out to be complex, the imaginary part indicating an infrared instability. This instability is traced to a tachyonic pole in the graviton propagator for constant Higgs fields. Physical implications of this behaviour are studied. We also discuss physical differences between gauge theories coupled to Higgs fields and graviton Higgs theory.

Srijit Bhattacharjee; Parthasarathi Majumdar

2013-01-30T23:59:59.000Z

308

Comparing Optical and Near Infrared Luminosity Functions  

E-Print Network (OSTI)

The Sloan Digital Sky Survey [SDSS] has measured an optical luminosity function for galaxies in 5 bands, finding 1.5 to 2.1 times more luminosity density than previous work. This note compares the SDSS luminosity density to two recent determinations of the near infrared luminosity function based on 2MASS data, and finds that an extrapolation of the SDSS results gives a 2.3 times greater near infrared luminosity density.

Edward L. Wright

2001-02-02T23:59:59.000Z

309

The Workshop in Atmospheric Predictability  

Science Conference Proceedings (OSTI)

A workshop on the subject of atmospheric predictability was held during 23-25 April 2001 at the Naval Postgraduate School in Monterey, California. Of primary concern was the nature of forecast uncertainty due to initial conditionuncertainty of ...

Ronald M. Errico; Rolf Langland; David P. Baumhefner

2002-09-01T23:59:59.000Z

310

(Chemistry of the global atmosphere)  

SciTech Connect

The traveler attended the conference The Chemistry of the Global Atmosphere,'' and presented a paper on the anthropogenic emission of carbon dioxide (CO{sub 2}) to the atmosphere. The conference included meetings of the International Global Atmospheric Chemistry (IGAC) programme, a core project of the International Geosphere/Biosphere Programme (IGBP) and the traveler participated in meetings on the IGAC project Development of Global Emissions Inventories'' and agreed to coordinate the working group on CO{sub 2}. Papers presented at the conference focused on the latest developments in analytical methods, modeling and understanding of atmospheric CO{sub 2}, CO, CH{sub 4}, N{sub 2}O, SO{sub 2}, NO{sub x}, NMHCs, CFCs, and aerosols.

Marland, G.

1990-09-27T23:59:59.000Z

311

Precursors to atmospheric blocking events  

E-Print Network (OSTI)

Atmospheric blocking events disturb synoptic-scale features from their normal eastward progression, causing anomalous weather conditions for the duration of the blocking event. The essence of blocking can be captured by ...

Marino, Garrett P

2009-01-01T23:59:59.000Z

312

Automated Measurements of Atmospheric Visibility  

Science Conference Proceedings (OSTI)

The concept of using a solid-state, linear-array imaging device coupled with computerized scene analysis and display to measure daytime atmospheric visibility is described. Computer software is implemented for routine conversion of observed ...

W. Viezee; W. E. Evans

1983-08-01T23:59:59.000Z

313

The Navy's Operational Atmospheric Analysis  

Science Conference Proceedings (OSTI)

In January of 1988, significant upgrades were made to the Navy Operational Global Atmospheric Prediction System (NOGAPS). Among these improvements was the implementation of a multivariate optimum interpolation analysis scheme. Since that time, ...

James S. Goerss; Patricia A. Phoebus

1992-06-01T23:59:59.000Z

314

Stochastic Simulation of Atmospheric Trajectories  

Science Conference Proceedings (OSTI)

Methods are presented for generating an ensemble of synthetic atmospheric trajectories. These include methods for a set of independent trajectories, and methods for a correlated set of sequential trajectories. The models incorporate first-order ...

Mitchell J. Small; Perry J. Samson

1983-02-01T23:59:59.000Z

315

Atmospheric Water Vapor over China  

Science Conference Proceedings (OSTI)

Chinese radiosonde data from 1970 to 1990 are relatively homogeneous in time and are used to examine the climatology, trends, and variability of China’s atmospheric water vapor content. The climatological distribution of precipitable water (PW) ...

Panmao Zhai; Robert E. Eskridge

1997-10-01T23:59:59.000Z

316

A Physical Formulation of Atmospheric Transmittances for the Massive Assimilation of Satellite Infrared Radiances  

Science Conference Proceedings (OSTI)

A continuous assimilation of high-density global satellite observations is required in order to improve numerical weather prediction analyses used to start forecasts. Until now, it was assumed that efficiency requirements imposed the use of ...

L. Garand; D. S. Turner; C. Chouinard; J. Hallé

1999-05-01T23:59:59.000Z

317

Fourier Transform Infrared Spectroscopic Analysis Of Plastic Capsule Materials Exposed To Deuterium-Tritium (DT) Gas  

DOE Green Energy (OSTI)

Planar samples of varying thicknesses of both CH and CD glow discharge polymer have been measured with Fourier transform infrared (FTIR) spectroscopy before and after exposure to deuterium-tritium (DT) gas at elevated temperature and pressure. Planar samples of polyimide films made from both hydrogenated and deuterated precursors have also been examined by FTIR before and after DT exposure. The post-exposure FTIR spectra demonstrated no measurable exchange of hydrogen with deuterium or tritium for either polymer. Evidence for oxidation of the glow discharge polymer due to atmospheric oxygen was the only chemical change indicated by the FTIR data.

Schoonover, J R; Steckle, Jr., W P; Elliot, N; Ebey, P S; Nobile, A; Nikroo, A; Cook, R C; Letts, S A

2005-06-16T23:59:59.000Z

318

Visible/Near-Infrared Hyperspectral Sensing of Solids under Controlled Environmental Conditions  

SciTech Connect

We describe the use of a wind tunnel for conducting controlled passive hyperspectral imaging experiments. Passive techniques are potentially useful for detecting explosives, solid-phase chemicals and other materials of interest from a distance so as to provide operator safety. The Pacific Northwest National Laboratory operates a wind tunnel facility that can generate and circulate artificial atmospheres to control lighting, humidity, temperature, aerosol burdens, and obscurants. We will present recent results describing optimized sensing of solids over tens of meters distance using both visible and near-infrared cameras, as well as the effects of certain environmental parameters on data retrieval.

Bernacki, Bruce E.; Anheier, Norman C.; Mendoza, Albert; Fritz, Brad G.; Johnson, Timothy J.

2011-06-01T23:59:59.000Z

319

Atmospheric Carbon Dioxide Record from In Situ Measurements at Baring Head  

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

Baring Head Baring Head Atmospheric Carbon Dioxide Record from In Situ Measurements at Baring Head graphics Graphics data Data Investigators M.R. Manning, A.J. Gomez, K.P. Pohl National Institute of Water and Atmospheric Research, Ltd., Climate Division, Gracefield Road, Gracefield, P.O. Box 31-311, Lower Hutt, New Zealand Period of Record 1970-93 Methods Determinations of atmospheric CO2 mixing ratios are made using a Siemens Ultramat-3 nondispersive infrared (NDIR) gas analyzer. The NDIR CO2 analyzer is connected via a gas manifold consisting of stainless steel tubing and computer-controlled solenoid switches to 12 gas cylinders and 2 sample air lines. The NDIR analyzer compares ambient air CO2 mixing ratios relative to known CO2 mixing ratios in tanks of compressed reference gases.

320

Atmospheric CO2 Concentrations from Aircraft for 1972-1981, CSIRO  

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

Atmospheric Trace Gases » CO2 » Concentrations from Aircraft for Atmospheric Trace Gases » CO2 » Concentrations from Aircraft for 1972-1981 Atmospheric CO2 Concentrations from Aircraft for 1972-1981, CSIRO Monitoring Program DOI: 10.3334/CDIAC/atg.ndp007 data Data (NDP-007) PDF PDF Investigators D. J. Beardsmore and G. I. Pearman Methods From 1972 through 1981, air samples were collected in glass flasks from aircraft at a variety of latitudes and altitudes over Australia, New Zealand, and Antarctica. The samples were analyzed for CO2 concentrations with nondispersive infrared gas analysis. The resulting data contain the sampling dates, type of aircraft, flight number, flask identification number, sampling time, geographic sector, distance in kilometers from the listed distance measuring equipment (DME) station, station number of the

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Definition: Forward-Looking Infrared | Open Energy Information  

Open Energy Info (EERE)

Forward-Looking Infrared Forward-Looking Infrared Jump to: navigation, search Dictionary.png Forward-Looking Infrared Forward Looking InfraRed (FLIR) cameras flown from fixed-wing aircraft measure the amount of energy radiated in the infrared (7.5 - 13 micrometer) to detect detailed information on the land surface temperature distribution that might indicate areas of geothermal activity.[1] View on Wikipedia Wikipedia Definition Forward looking infrared (FLIR) cameras, typically used on military and civilian aircraft, use an imaging technology that senses infrared radiation. The sensors installed in forward-looking infrared cameras-as well as those of other thermal imaging cameras-use detection of infrared radiation, typically emitted from a heat source, to create a "picture"

322

CDIAC Atmospheric Moisture Data Sets  

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

Atmospheric Moisture Atmospheric Moisture CDIAC Climate Holdings Containing Atmospheric Moisture Data Global Data Sets Data Set Name Investigators Data Type/Format Period of Record Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (CDIAC NDP-026C) C.J. Hahn, S.G. Warren, and R. Eastman Six-hourly synoptic observations of dew point depression (combined with air temperature) Land 1971-2009; Ocean 1952-2008 Regional Data Sets Data Set Name Investigators Data Type/Format Period of Record Six- and Three-Hourly Meteorological Observations from 223 Former U.S.S.R. Stations (CDIAC NDP-048) V. Razuvaev et al. Surface stations; 6- and 3-hourly observations of relative humidity, vapor pressure, humidity deficit, and dew point temperature Varies by station; through 2000

323

atmospheric pressure | OpenEI  

Open Energy Info (EERE)

pressure pressure Dataset Summary Description (Abstract):Atmospheric Pressure (kPa)NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly & Annual Average (July 1983 - June 2005)Parameter: Atmospheric Pressure (kPa)Internet: http://eosweb.larc.nasa.gov/sse/Note 1: SSE Methodology & Accuracy sections onlineNote 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated Unknown Keywords atmospheric pressure climate NASA SWERA UNEP Data text/csv icon Download Data (csv, 46 MiB)

324

CDIAC Atmospheric Pressure Data Sets  

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

Atmospheric Pressure Atmospheric Pressure CDIAC Climate Holdings Containing Atmospheric Pressure Data Global Data Sets Data Set Name Investigators Data Type/Format Period of Record Global Historical Climatology Network (GHCN); Vs. 1 (CDIAC NDP-041) R.S. Vose et al. Surface stations; monthly mean sea-level pressure Varies by station; through 1990 Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (CDIAC NDP-026C) C.J. Hahn, S.G. Warren, and R. Eastman Six-hourly synoptic observations of sea-level pressure Land 1971-2009; Ocean 1952-2008 Global Historical Climatology Network (GHCN); Vs. 2 (Note: the above link takes you to NOAA's National Climatic Data Center website.) R.S. Vose et al. Surface stations; monthly mean sea-level pressure Varies by station; some through most recent month

325

National Atmospheric Release Advisory Center  

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

NARAC TOC NARAC TOC The National Atmospheric Release Advisory Center, NARAC, provides tools and services to the Federal Government, that map the probable spread of hazardous material accidentally or intentionally released into the atmosphere. NARAC provides atmospheric plume predictions in time for an emergency manager to decide if taking protective action is necessary to protect the health and safety of people in affected areas. Located at the Lawrence Livermore National Laboratory, NARAC is a national support and resource center for planning, real-time assessment, emergency response, and detailed studies of incidents involving a wide variety of hazards, including nuclear, radiological, chemical, biological, and natural emissions. In an emergency situation (if lives are at risk), event-specific NARAC

326

ARM's Atmospheric Emitted Radiance Interferometer (AERI) Data  

DOE Data Explorer (OSTI)

The atmospheric emitted radiance interferometer (AERI) measures the absolute infrared spectral radiance (watts per square meter per steradian per wavenumber) of the sky directly above the instrument. The spectral measurement range of the instrument is 3300 to 520 wavenumbers (cm-1) or 3-19.2 microns for the normal-range instruments and 3300 to 400 cm-1 or 3-25 microns for the extended-range polar instruments. Spectral resolution is 1.0 cm-1. Instrument field-of-view is 1.3 degrees. A calibrated sky radiance spectrum is produced every 8 minutes in normal mode and every minute in rapid sampling mode. The actual sample scan time is 20-30 sec in rapid sampling mode with periodic gaps when the instrument is looking at the blackbodies. Rapid sampling will become available in all AERIs. Rapid sampling time will eventually be reduced to data every 20 seconds. The AERI data can be used for (1) evaluating line-by-line radiative transport codes, (2) detecting/quantifying cloud effects on ground-based measurements of infrared spectral radiance (and hence is valuable for cloud property retrievals), and (3) calculating vertical atmospheric profiles of temperature and water vapor and the detection of trace gases.[Copied from http://www.arm.gov/instruments/aeri]

The ARM Archive at Oak Ridge National Laboratory holds data collected from the AERI for three of the permanent ARM sites, North Slope Alaska (NSA), Southern Great Plains (SGP), and the Tropical Western Pacific (TWP), as well as from mobile facilities used during specific field campaigns. AERI data has been collected since 1995.

327

Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Near Infrared Surveys Details Activities (18) Areas (14) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 450.0045,000 centUSD 0.45 kUSD 4.5e-4 MUSD 4.5e-7 TUSD / sq. mile Median Estimate (USD): 800.0080,000 centUSD 0.8 kUSD 8.0e-4 MUSD 8.0e-7 TUSD / sq. mile High-End Estimate (USD): 1,350.00135,000 centUSD 1.35 kUSD 0.00135 MUSD 1.35e-6 TUSD / sq. mile Time Required Low-End Estimate: 6 weeks0.115 years

328

Probing Organic Transistors with Infrared Beams  

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

Probing Organic Transistors with Infrared Beams Print Probing Organic Transistors with Infrared Beams Print Silicon-based transistors are well-understood, basic components of contemporary electronic technology. In contrast, there is growing need for the development of electronic devices based on organic polymer materials. Organic field-effect transistors (FETs) are ideal for special applications that require large areas, light weight, and structural flexibility. They also have the advantage of being easy to mass-produce at very low cost. However, even though this class of devices is finding a growing number of applications, electronic processes in organic materials are still not well understood. A group of researchers from the University of California and the ALS has succeeded in probing the intrinsic electronic properties of the charge carriers in organic FETs using infrared spectromicroscopy. The results of their study could help in the future development of sensors, large-area displays, and other plastic electronic components.

329

Infrared sensing techniques for adaptive robotic welding  

SciTech Connect

The objective of this research is to investigate the feasibility of using infrared sensors to monitor the welding process. Data were gathered using an infrared camera which was trained on the molten metal pool during the welding operation. Several types of process perturbations which result in weld defects were then intentionally induced and the resulting thermal images monitored. Gas tungsten arc using ac and dc currents and gas metal arc welding processes were investigated using steel, aluminum and stainless steel plate materials. The thermal images obtained in the three materials and different welding processes revealed nearly identical patterns for the same induced process perturbation. Based upon these results, infrared thermography is a method which may be very applicable to automation of the welding process.

Lin, T.T.; Groom, K.; Madsen, N.H.; Chin, B.A.

1986-01-01T23:59:59.000Z

330

Infrared light sources with semimetal electron injection  

DOE Patents (OSTI)

An infrared light source is disclosed that comprises a layered semiconductor active region having a semimetal region and at least one quantum-well layer. The semimetal region, formed at an interface between a GaAsSb or GalnSb layer and an InAsSb layer, provides electrons and holes to the quantum-well layer to generate infrared light at a predetermined wavelength in the range of 2-6 .mu.m. Embodiments of the invention can be formed as electrically-activated light-emitting diodes (LEDs) or lasers, and as optically-pumped lasers. Since the active region is unipolar, multiple active regions can be stacked to form a broadband or multiple-wavelength infrared light source.

Kurtz, Steven R. (Albuquerque, NM); Biefeld, Robert M. (Albuquerque, NM); Allerman, Andrew A. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

331

HOT METHANE LINE LISTS FOR EXOPLANET AND BROWN DWARF ATMOSPHERES  

SciTech Connect

We present comprehensive experimental line lists of methane (CH{sub 4}) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for the temperatures 300-1400 Degree-Sign C at twelve 100 Degree-Sign C intervals spanning the 960-5000 cm{sup -1} (2.0-10.4 {mu}m) region of the infrared. This range encompasses the dyad, pentad, and octad regions, i.e., all fundamental vibrational modes along with a number of combination, overtone and hot bands. Using our CH{sub 4} spectra, we have estimated empirical lower state energies (E{sub low} in cm{sup -1}) and our values have been incorporated into the line lists along with line positions ({nu}-bar in cm{sup -1}) and calibrated line intensities (S' in cm molecule{sup -1}). We expect our hot CH{sub 4} line lists to find direct application in the modeling of planetary atmospheres and brown dwarfs.

Hargreaves, Robert J.; Bernath, Peter F. [Department of Chemistry, University of York, Heslington, York YO10 5DD (United Kingdom); Beale, Christopher A.; Michaux, Laurent; Irfan, Melis, E-mail: rjh135@york.ac.uk, E-mail: cbeale@odu.edu, E-mail: lm595@york.ac.uk, E-mail: melis.irfan@postgrad.manchester.ac.uk, E-mail: pbernath@odu.edu [Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)

2012-09-20T23:59:59.000Z

332

The FourStar Infrared Camera  

E-Print Network (OSTI)

The FourStar infrared camera is a 1.0-2.5 micron (JHKs) near infrared camera for the Magellan Baade 6.5m telescope at Las Campanas Observatory (Chile). It is being built by Carnegie Observatories and the Instrument Development Group at Johns Hopkins and is scheduled for completion in 2009. The instrument uses four Teledyne HAWAII-2RG arrays that produce a 10.9 x 10.9 arcmin field of view. The outstanding seeing at the Las Campanas site coupled with FourStar's high sensitivity and large field of view will enable many new survey and targeted science programs.

S. E. Persson; Robert Barkhouser; Christoph Birk; Randy Hammond; Albert Harding; E. R. Koch; J. L. Marshall; Patrick J. McCarthy; David Murphy; Joe Orndorff; Gregg Scharfstein; Stephen A. Shectman; Stephen Smee; Alan Uomoto

2008-07-24T23:59:59.000Z

333

Infrared Heating of Hydrogen Layers in Hohlraums  

DOE Green Energy (OSTI)

The authors report results of modeling and experiments on infrared heated deuterium-hydride (HD) layers in hohlraums. A 2 mm diameter, 40 {micro}m thick shell with 100-400 {micro}m thick HD ice inside a NIF scale-1 gold hohlraum with 1-3 {micro}m rms surface roughness is heated by pumping the HD vibrational bands. Models indicate control of the low-mode layer shape by adjusting the infrared distribution along the hohlraum walls. They have experimentally demonstrated control of the layer symmetry perpendicular to the hohlraum axis.

Kozioziemski, B J; McEachern, R L; London, R A; Bitter, D N

2001-08-15T23:59:59.000Z

334

A Fast Line-by-Line Method for Atmospheric Absorption Computations: The Automatized Atmospheric Absorption Atlas  

Science Conference Proceedings (OSTI)

A computationally fast line-by-line method for the determination of atmospheric absorption is described. This method is based on the creation of an Automatized Atmospheric Absorption Atlas (4A) covering all possible plausible atmospheric ...

N. A. Scott; A. Chedin

1981-07-01T23:59:59.000Z

335

Quality Assurance in Atmospheric Modeling  

Science Conference Proceedings (OSTI)

This paper summarizes a number of best practices associated with the use of numerical models of the atmosphere and is motivated by the rapid growth in the number of model users, who have a range of scientific and technical preparations. An underlying ...

Thomas T. Warner

2011-12-01T23:59:59.000Z

336

Geomagnetic Effects on Atmospheric Neutrinos  

E-Print Network (OSTI)

Geomagnetic effects distort the zenith angle distribution of sub--GeV and few--GeV atmospheric neutrinos, breaking the up--down symmetry that would be present in the absence of neutrino oscillations and without a geomagnetic field. The geomagnetic effects also produce a characteristic azimuthal dependence of the $\

Paolo Lipari; T. K. Gaisser; Todor Stanev

1998-03-09T23:59:59.000Z

337

Method and apparatus for simulating atmospheric absorption of solar energy due to water vapor and CO{sub 2}  

DOE Patents (OSTI)

A method and apparatus for improving the accuracy of the simulation of sunlight reaching the earth`s surface includes a relatively small heated chamber having an optical inlet and an optical outlet, the chamber having a cavity that can be filled with a heated stream of CO{sub 2} and water vapor. A simulated beam comprising infrared and near infrared light can be directed through the chamber cavity containing the CO{sub 2} and water vapor, whereby the spectral characteristics of the beam are altered so that the output beam from the chamber contains wavelength bands that accurately replicate atmospheric absorption of solar energy due to atmospheric CO{sub 2} and moisture. 8 figs.

Sopori, B.L.

1995-06-20T23:59:59.000Z

338

High-energy atmospheric neutrinos  

E-Print Network (OSTI)

High-energy neutrinos, arising from decays of mesons that were produced through the cosmic rays collisions with air nuclei, form unavoidable background noise in the astrophysical neutrino detection problem. The atmospheric neutrino flux above 1 PeV should be supposedly dominated by the contribution of charmed particle decays. These (prompt) neutrinos originated from decays of massive and shortlived particles, $D^\\pm$, $D^0$, $\\bar{D}{}^0$, $D_s^\\pm$, $\\Lambda^+_c$, form the most uncertain fraction of the high-energy atmospheric neutrino flux because of poor explored processes of the charm production. Besides, an ambiguity in high-energy behavior of pion and especially kaon production cross sections for nucleon-nucleus collisions may affect essentially the calculated neutrino flux. There is the energy region where above flux uncertainties superimpose. A new calculation presented here reveals sizable differences, up to the factor of 1.8 above 1 TeV, in muon neutrino flux predictions obtained with usage of known hadronic models, SIBYLL 2.1 and QGSJET-II. The atmospheric neutrino flux in the energy range $10-10^7$ GeV was computed within the 1D approach to solve nuclear cascade equations in the atmosphere, which takes into account non-scaling behavior of the inclusive cross-sections for the particle production, the rise of total inelastic hadron-nucleus cross-sections and nonpower-law character of the primary cosmic ray spectrum. This approach was recently tested in the atmospheric muon flux calculations [1]. The results of the neutrino flux calculations are compared with the Frejus, AMANDA-II and IceCube measurement data.

S. I. Sinegovsky; A. A. Kochanov; T. S. Sinegovskaya

2010-10-12T23:59:59.000Z

339

Noise reduction efforts for the ALS infrared beamlines  

E-Print Network (OSTI)

is being commissioned at the ALS that should help quietalso has links to the main ALS Infrared Website, where PDF’sNoise reduction efforts for the ALS infrared beamlines Tom

2003-01-01T23:59:59.000Z

340

Satellite Rainfall Estimation Using Combined Passive Microwave and Infrared Algorithms  

Science Conference Proceedings (OSTI)

The development of a combined infrared and passive microwave satellite rainfall estimation technique is outlined. Infrared data from geostationary satellites are combined with polar-orbiting passive microwave estimates to provide 30-min rainfall ...

Chris Kidd; Dominic R. Kniveton; Martin C. Todd; Tim J. Bellerby

2003-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Infrared Brightness Temperature of Mars, 1983-2103  

E-Print Network (OSTI)

The predicted infrared brightness temperature of Mars using the 1976 model of Wright is tabulated here for the period 1983 to 2103. This model was developed for far-infrared calibration, and is still being used for JCMT calibration.

E. L. Wright

2007-03-25T23:59:59.000Z

342

Infrared Quantum Dots** By Edward H. Sargent*  

E-Print Network (OSTI)

increasingly on mastery of the infrared spectral region. Fiber-optic communications systems rely on the low's progress in visible-light-emitting colloidal-quantum-dot synthesis, physical chemistry, and devices on applications and devices. The applications of interest surveyed include monolithic integration of fiber-optic

343

MOLECULAR GAS IN INFRARED ULTRALUMINOUS QSO HOSTS  

Science Conference Proceedings (OSTI)

We report CO detections in 17 out of 19 infrared ultraluminous QSO (IR QSO) hosts observed with the IRAM 30 m telescope. The cold molecular gas reservoir in these objects is in a range of (0.2-2.1) Multiplication-Sign 10{sup 10} M{sub Sun} (adopting a CO-to-H{sub 2} conversion factor {alpha}{sub CO} = 0.8 M{sub Sun} (K km s{sup -1} pc{sup 2}){sup -1}). We find that the molecular gas properties of IR QSOs, such as the molecular gas mass, star formation efficiency (L{sub FIR}/L'{sub CO}), and CO (1-0) line widths, are indistinguishable from those of local ultraluminous infrared galaxies (ULIRGs). A comparison of low- and high-redshift CO-detected QSOs reveals a tight correlation between L{sub FIR} and L'{sub CO(1-0)} for all QSOs. This suggests that, similar to ULIRGs, the far-infrared emissions of all QSOs are mainly from dust heated by star formation rather than by active galactic nuclei (AGNs), confirming similar findings from mid-infrared spectroscopic observations by Spitzer. A correlation between the AGN-associated bolometric luminosities and the CO line luminosities suggests that star formation and AGNs draw from the same reservoir of gas and there is a link between star formation on {approx}kpc scale and the central black hole accretion process on much smaller scales.

Xia, X. Y.; Hao, C.-N. [Tianjin Astrophysics Center, Tianjin Normal University, Tianjin 300387 (China); Gao, Y.; Tan, Q. H. [Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008 (China); Mao, S. [National Astronomical Observatories of China, 20A Datun Road, Chaoyang District, Beijing 100012 (China); Omont, A. [Institut d'Astrophysique de Paris, UMR7095, UPMC and CNRS, 98bis boulevard Arago, F-75014 Paris (France); Flaquer, B. O.; Leon, S. [Instituto de Radioastronomia Milimetrica (IRAM), Avenida Divina Pastora 7, Nucleo Central, 18012 Granada (Spain); Cox, P., E-mail: xyxia@bao.ac.cn [Institut de Radio Astronomie Millimetrique (IRAM), F-38406 St. Martin d'Heres (France)

2012-05-10T23:59:59.000Z

344

SiGeC Near Infrared Photodetectors  

E-Print Network (OSTI)

A near infrared waveguide photodetector in Si-based ternary Si?â??xâ??yGexCy alloy was demonstrated for 0.85~1.06 µm wavelength fiber-optic interconnection system applications. Two sets of detectors with active absorption ...

Li, Baojun

345

A Comparison of Infrared Light Emitting Diodes (IR-LED) versus Infrared  

E-Print Network (OSTI)

B. Characteristics of a typical IR LED analogous to the typeLight Emitting Diodes (IR-LED) versus Infrared Helium-Neon (light emitting diode (IR-LED) to quantitatively measure fuel

Girard, James W.; Bogin, Gregory E; Mack, John Hunter; Chen, J-Y; Dibble, Rober W

2005-01-01T23:59:59.000Z

346

The extended atmosphere and evolution of the RV Tau star R Scuti  

E-Print Network (OSTI)

We analyze ISO/SWS spectra of the RV Tau star R Scuti. The infrared spectra are dominated by H2O emission bands. The near- and mid-infrared excess is attributed to H2O; the dust contribution is less important. We also identify CO, SiO and CO2 bands. The various molecular emission bands originate from an extended atmosphere, an atmosphere above the photosphere. The extended atmosphere of R Sct is formed from matter which gradually have lifted up from the photosphere through the pulsations of the star. In contrast to the abundant molecules around the star, the silicate dust feature is weak and the dust mass-loss rate is only 10^{-11} solar mass per year. This implies that there might be a process to inhibit dust formation from molecules. RV Tau stars are commonly considered as post-AGB stars. While a detached dust envelope around R Sct is consistent with such an interpretation, we show that its period evolution is slower than expected. We argue that R Sct may be a thermal-pulsing AGB star, observed in a helium-burning phase.

M. Matsuura; I. Yamamura; A. A. Zijlstra; T. R. Bedding

2002-03-14T23:59:59.000Z

347

Metallic Mesh Filter Used for Electromagnetic Shielding of Infrared Window  

Science Conference Proceedings (OSTI)

In order to meet anti-electromagnetism interference performance requirements of infrared window, a metallic mesh coating must be used on the infrared window. From the diffraction theory of grating and the equivalent circuit method, simplified expressions ... Keywords: stealth technology, electro-optical countermeasure, transparent conductive coating, metallic mesh filter, infrared window

Jia-Li Song, Xiao-Guo Feng

2012-07-01T23:59:59.000Z

348

A multimedia museum guide system with instant infrared communication  

Science Conference Proceedings (OSTI)

In this paper, we describe a prototype of an multimedia guide system that use instant infrared communication to get the multimedia contents and play the contents based on the operation of the users. The portable guide device is conposed of an infrared ... Keywords: guide system, infrared, uubiquitous computing, wireless communication

Dawei Cai

2008-03-01T23:59:59.000Z

349

Generation of Turbulence by Atmospheric Gravity Waves  

Science Conference Proceedings (OSTI)

The standard current criterion for the generation of turbulence by atmospheric gravity waves and for the associated limitation on wave growth is based upon the standard criterion for static instability of the unperturbed atmosphere, namely, that ...

Colin O. Hines

1988-04-01T23:59:59.000Z

350

AMIP: The Atmospheric Model Intercomparison Project  

Science Conference Proceedings (OSTI)

The Atmospheric Model Intercomparison Project (AMIP) is an international effort to determine the systematic climate errors of atmospheric models under realistic conditions, and calls for the simulation of the climate of the decade 1979–1988 using ...

W. Lawrence Gates

1992-12-01T23:59:59.000Z

351

Retrieval of atmospheric properties of extrasolar planets  

E-Print Network (OSTI)

We present a new method to retrieve molecular abundances and temperature profiles from exoplanet atmosphere photometry and spectroscopy. Our method allows us to run millions of 1-D atmosphere models in order to cover the ...

Nikku, Madhusudhan, 1980-

2009-01-01T23:59:59.000Z

352

Interannual Variation of Global Atmospheric Angular Momentum  

Science Conference Proceedings (OSTI)

The relative atmospheric angular momentum (RAM) integrated over the globe is an explicit variable representing the state of the atmospheric general circulation. After removing the annual, semiannual, and higher-frequency components, the filtered ...

Tsing-Chang Chen; Joseph J. Tribbia; Ming-Cheng Yen

1996-10-01T23:59:59.000Z

353

Statistics Education in the Atmospheric Sciences  

Science Conference Proceedings (OSTI)

Analyses of atmospheric sciences data and models are heavily dependent upon statistical and probabilistic reasoning. Statistical methods have played an important role in establishing physical relationships of atmosphere-ocean-land interactions ...

Timothy J. Brown; L. Mark Berliner; Daniel S. Wilks; Michael B. Richman; Christopher K. Wilke

1999-10-01T23:59:59.000Z

354

Atmospheric Control on the Thermohaline Circulation  

Science Conference Proceedings (OSTI)

In an attempt to elucidate the role of atmospheric and oceanic processes in setting a vigorous ocean overturning circulation in the North Atlantic but not in the North Pacific, a comparison of the observed atmospheric circulation and net surface ...

Arnaud Czaja

2009-01-01T23:59:59.000Z

355

The Promise of GPS in Atmospheric Monitoring  

Science Conference Proceedings (OSTI)

This paper provides an overview of applications of the Global Positioning System (GPS) for active measurement of the Earth's atmosphere. Microwave radio signals transmitted by GPS satellites are delayed (refracted) by the atmosphere as they ...

Steven Businger; Steven R. Chiswell; Michael Bevis; Jingping Duan; Richard A. Anthes; Christian Rocken; Randolph H. Ware; Michael Exner; T. VanHove; Fredrick S. Solheim

1996-01-01T23:59:59.000Z

356

Testing and Evaluating Atmospheric Climate Models  

Science Conference Proceedings (OSTI)

Model validation is a crucial process that underpins model development and gives confidence to the results from running models. This article discusses a range of techniques for validating atmosphere models given that the atmosphere is chaotic and incompletely ...

Vicky Pope; Terry Davies

2002-09-01T23:59:59.000Z

357

Sulfuryl fluoride in the global atmosphere  

E-Print Network (OSTI)

The first calibrated high-frequency, high-precision, in situ atmospheric and archived air measurements of the fumigant sulfuryl fluoride (SO[subscript 2]F[subscript 2]) have been made as part of the Advanced Global Atmospheric ...

Muhle, J.

358

Dynamical Processes of Equatorial Atmospheric Angular Momentum  

Science Conference Proceedings (OSTI)

The dynamical processes that drive intraseasonal equatorial atmospheric angular momentum (EAAM) fluctuations are examined with the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis data. ...

Steven B. Feldstein

2006-02-01T23:59:59.000Z

359

VALDRIFT—A Valley Atmospheric Dispersion Model  

Science Conference Proceedings (OSTI)

VALDRIFT (valley drift) is a valley atmospheric transport, diffusion, and deposition model. The model is phenomenological—that is, the dominant meteorological processes governing the behavior of the valley atmosphere are formulated explicitly in ...

K. Jerry Allwine; Xindi Bian; C. David Whiteman; Harold W. Thistle

1997-08-01T23:59:59.000Z

360

A Spontaneously Generated Tropical Atmospheric General Circulation  

Science Conference Proceedings (OSTI)

A series of idealized atmospheric general circulation model (AGCM) experiments are presented. These experiments examine whether and how atmospheric deep moist convection, in the absence of meridional gradients in external forcing, interacts with ...

Ben P. Kirtman; Edwin K. Schneider

2000-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Atmospheric Turbidity in the Polar Regions  

Science Conference Proceedings (OSTI)

Analysis is presented of 800 measurements of atmospheric monochromatic aerosol optical depth made poleward of 65° latitude. The atmosphere of the southern polar region appears to be uncontaminated but is charged with a background aerosol having ...

Glenn E. Shaw

1982-08-01T23:59:59.000Z

362

Advanced Atmospheric Modeling for Emergency Response  

Science Conference Proceedings (OSTI)

Atmospheric transport and diffusion models are an important part of emergency response systems for industrial facilities that have the potential to release significant quantities of toxic or radioactive material into the atmosphere. An advanced ...

Jerome D. Fast; B. Lance O'steen; Robert P. Addis

1995-03-01T23:59:59.000Z

363

Quantitative determination of atmospheric hydroperoxyl radical  

SciTech Connect

A method for the quantitative determination of atmospheric hydroperoxyl radical comprising: (a) contacting a liquid phase atmospheric sample with a chemiluminescent compound which luminesces on contact with hydroperoxyl radical; (b) determining luminescence intensity from the liquid phase atmospheric sample; and (c) comparing said luminescence intensity from the liquid phase atmospheric sample to a standard luminescence intensity for hydroperoxyl radical. An apparatus for automating the method is also included.

Springston, Stephen R. (Upton, NY); Lloyd, Judith (Westbury, NY); Zheng, Jun (Stony Brook, NY)

2007-10-23T23:59:59.000Z

364

INHIBITION OF METHANE ATMOSPHERIC FLAMES BY ...  

Science Conference Proceedings (OSTI)

... atmospheric pressure was studied. The burner temperature was maintained at 65 “C by using a thermostat. The volumetric velocity ...

2011-10-20T23:59:59.000Z

365

North Carolina Refinery Operable Atmospheric Crude Oil ...  

U.S. Energy Information Administration (EIA)

North Carolina Refinery Operable Atmospheric Crude Oil Distillation Capacity as of January 1 (Barrels per Calendar Day)

366

Detecting atmospheric rivers in large climate datasets  

Science Conference Proceedings (OSTI)

Extreme precipitation events on the western coast of North America are often traced to an unusual weather phenomenon known as atmospheric rivers. Although these storms may provide a significant fraction of the total water to the highly managed western ... Keywords: atmospheric rivers, automatic detection of atmospheric rivers, connected component labeling, extreme climate events

Surendra Byna; Prabhat; Michael F. Wehner; Kesheng John Wu

2011-11-01T23:59:59.000Z

367

International RADAGAST Experiment in Niamey, Niger: Changes and Drivers of Atmospheric Radiation Balance  

Science Conference Proceedings (OSTI)

The Sahara desert is notorious as a source of massive dust storms. This dust dramatically influences the Earth-atmosphere energy budget through reflecting and absorbing the incoming sunlight. However, this budget is poorly understood, and in particular, we lack quantitative understanding of how the diurnal and seasonal variation of meteorological variables and aerosol properties influence the propagation of solar irradiance through the desert atmosphere. To improve our understanding of these influences, coincident and collocated observations of fluxes, measured from both space and the surface, are highly desirable. Recently, the unique capabilities of the African Monsoon Multidisciplinary Analysis (AMMA) Experiment, the Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF), the Geostationary Earth Radiation Budget (GERB) instrument, and the Spinning Enhanced Visible and Infrared Imager (SEVIRI) were combined effectively as part of a large international project: the Radiative Atmospheric Divergence using AMF, GERB data and AMMA Stations (RADAGAST), which took place in Niamey, Niger, in 2006. The RADAGAST objectives, instrumentation, and scientific background are presented in [1]. Initial results from RADAGAST documented the strong radiative impact of a major Saharan dust storm on the Earth’s radiation budget [2]. A special issue of the Journal of Geophysical Research will include a collection of papers with the more complete results from RADAGAST (e.g., [1,3], and references therein). In particular, a year-long time series from RADAGAST are used to investigate (i) the factors that control the radiative fluxes and the divergence of radiation across the atmosphere [3-5], (ii) seasonal changes in the surface energy balance and associated variations in atmospheric constituents (water vapor, clouds, aerosols) [6], and (iii) sensitivity of microphysical, chemical and optical properties of aerosols to their sources and the atmospheric conditions [7]. Here we show retrievals of the aerosol properties from spectrally resolved solar measurements, the simulated and observed radiative fluxes at the surface, and outline factors that control the magnitude and variability of aerosol and radiative properties [8].

Kassianov, Evgueni I.; McFarlane, Sally A.; Barnard, James C.; Flynn, Connor J.; Slingo, A.; Bharmal, N.; Robinson, G. J.; Turner, David D.; Miller, Mark; Ackerman, Thomas P.; Miller, R.

2009-03-11T23:59:59.000Z

368

3D metamaterials for the thermal infrared.  

Science Conference Proceedings (OSTI)

Metamaterials form a new class of artificial electromagnetic materials that provides the device designer with the ability to manipulate the flow of electromagnetic energy in ways that are not achievable with naturally occurring materials. However, progress toward practical implementation of metamaterials, particularly at infrared and visible frequencies, has been hampered by a combination of absorptive losses; the narrow band nature of the resonant metamaterial response; and the difficulty in fabricating fully 3-dimensional structures. They describe the progress of a recently initiated program at Sandia National Laboratories directed toward the development of practical 3D metamaterials operating in the thermal infrared. They discuss their analysis of fundamental loss limits for different classes of metamaterials. In addition, they discuss new design approaches that they are pursuing which reduce the reliance on metallic structures in an effort to minimize ohmic losses.

Sinclair, Michael B.; Brener, Igal; Wendt, Joel Robert; Burckel, David Bruce; Ten Eyck, Gregory A.

2010-06-01T23:59:59.000Z

369

THE INFRARED COLORS OF THE SUN  

Science Conference Proceedings (OSTI)

Solar infrared colors provide powerful constraints on the stellar effective temperature scale, but they must be measured with both accuracy and precision in order to do so. We fulfill this requirement by using line-depth ratios to derive in a model-independent way the infrared colors of the Sun, and we use the latter to test the zero point of the Casagrande et al. effective temperature scale, confirming its accuracy. Solar colors in the widely used Two Micron All Sky Survey (2MASS) JHK{sub s} and WISE W1-4 systems are provided: (V - J){sub Sun} = 1.198, (V - H){sub Sun} = 1.484, (V - K{sub s} ){sub Sun} = 1.560, (J - H){sub Sun} = 0.286, (J - K{sub s} ){sub Sun} = 0.362, (H - K{sub s} ){sub Sun} = 0.076, (V - W1){sub Sun} = 1.608, (V - W2){sub Sun} = 1.563, (V - W3){sub Sun} = 1.552, and (V - W4){sub Sun} = 1.604. A cross-check of the effective temperatures derived implementing 2MASS or WISE magnitudes in the infrared flux method confirms that the absolute calibration of the two systems agrees within the errors, possibly suggesting a 1% offset between the two, thus validating extant near- and mid-infrared absolute calibrations. While 2MASS magnitudes are usually well suited to derive T{sub eff}, we find that a number of bright, solar-like stars exhibit anomalous WISE colors. In most cases, this effect is spurious and can be attributed to lower-quality measurements, although for a couple of objects (3% {+-} 2% of the total sample) it might be real, and may hint at the presence of warm/hot debris disks.

Casagrande, L.; Asplund, M. [Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, Australian National University, ACT 2611 (Australia); Ramirez, I. [McDonald Observatory and Department of Astronomy, University of Texas at Austin, 1 University Station, C1400 Austin, TX 78712-0259 (United States); Melendez, J., E-mail: luca@mso.anu.edu.au [Departamento de Astronomia do IAG/USP, Universidade de Sao Paulo, Rua do Matao 1226, Sao Paulo, 05508-900 SP (Brazil)

2012-12-10T23:59:59.000Z

370

Composition and Reactions of Atmospheric Aerosol Particles  

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

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

371

Composition and Reactions of Atmospheric Aerosol Particles  

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

Composition and Reactions of Composition and Reactions of Atmospheric Aerosol Particles Composition and Reactions of Atmospheric Aerosol Particles Print Wednesday, 29 June 2005 00:00 Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

372

Composition and Reactions of Atmospheric Aerosol Particles  

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

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

373

Acoustic Waves in the Turbulent Atmosphere: A Review  

Science Conference Proceedings (OSTI)

The subject of atmospheric acoustics and its role in atmospheric research and in development of modern methods of ground-based remote sensing of the atmosphere are outlined. A historical overview of investigations of the effect of atmospheric ...

M. A. Kallistratova

2002-08-01T23:59:59.000Z

374

Probing Organic Transistors with Infrared Beams  

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

Probing Organic Transistors with Probing Organic Transistors with Infrared Beams Probing Organic Transistors with Infrared Beams Print Wednesday, 26 July 2006 00:00 Silicon-based transistors are well-understood, basic components of contemporary electronic technology. In contrast, there is growing need for the development of electronic devices based on organic polymer materials. Organic field-effect transistors (FETs) are ideal for special applications that require large areas, light weight, and structural flexibility. They also have the advantage of being easy to mass-produce at very low cost. However, even though this class of devices is finding a growing number of applications, electronic processes in organic materials are still not well understood. A group of researchers from the University of California and the ALS has succeeded in probing the intrinsic electronic properties of the charge carriers in organic FETs using infrared spectromicroscopy. The results of their study could help in the future development of sensors, large-area displays, and other plastic electronic components.

375

Infrared Sky Brightness Monitors for Antarctica  

E-Print Network (OSTI)

. Two sky brightness monitorsone for the near-infrared and one for the mid-infraredhave been developed for site survey work in Antarctica. The instruments, which we refer to as the NISM (Near-Infrared Sky Monitor) and the MISM (Mid-Infrared Sky Monitor), are part of a suite of instruments being deployed in the Automated Astrophysical Site-Testing Observatory (AASTO). The chief design constraints include reliable, autonomous operation, low power consumption, and of course the ability to operate under conditions of extreme cold. The instruments are currently operational at the Amundsen-Scott South Pole Station, prior to deployment at remote, unattended sites on the high antarctic plateau. 1. INTRODUCTION The antarctic plateau is recognized as having the potential to provide some of the best astronomical observing conditions on earth (see, e.g., Burton et al. 1994). Almost all the site testing to date has been carried out at the South Pole, where it has already been demonstrated t...

Storey Ashley Boccas; J. W. V. Storey; M. C. B. Ashley; M. Boccas; M. A. Phillips; A. E. T. Schinckel

1999-01-01T23:59:59.000Z

376

Cirrus Cloud Properties Derived from High Spectral Resolution Infrared Spectrometry during FIRE II. Part III: Ground-Based HIS Results  

Science Conference Proceedings (OSTI)

During FIRE II, cirrus clouds were observed in the wavelength range 3–19, µm with two High Resolution Interferometer Sounders as described in the Part I companion paper. One, known as AC-HIS, was mounted on the NASA ER-2 aircraft in order to look ...

A. D. Collard; S. A. Ackerman; W. L. Smith; X. Ma; H. E. Revercomb; R. O. Knuteson; S-C. Lee

1995-12-01T23:59:59.000Z

377

High-energy atmospheric neutrinos  

E-Print Network (OSTI)

High-energy neutrinos, arising from decays of mesons that were produced through the cosmic rays collisions with air nuclei, form unavoidable background noise in the astrophysical neutrino detection problem. The atmospheric neutrino flux above 1 PeV should be supposedly dominated by the contribution of charmed particle decays. These (prompt) neutrinos originated from decays of massive and shortlived particles, $D^\\pm$, $D^0$, $\\bar{D}{}^0$, $D_s^\\pm$, $\\Lambda^+_c$, form the most uncertain fraction of the high-energy atmospheric neutrino flux because of poor explored processes of the charm production. Besides, an ambiguity in high-energy behavior of pion and especially kaon production cross sections for nucleon-nucleus collisions may affect essentially the calculated neutrino flux. There is the energy region where above flux uncertainties superimpose. A new calculation presented here reveals sizable differences, up to the factor of 1.8 above 1 TeV, in muon neutrino flux predictions obtained with usage of known...

Sinegovsky, S I; Sinegovskaya, T S

2010-01-01T23:59:59.000Z

378

Recent Progress in Retrieving Air Temperature Profiles and Air-Sea Temperature Differences from Infrared and Microwave Scan...  

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

Recent Progress in Retrieving Air Temperature Profiles Recent Progress in Retrieving Air Temperature Profiles and Air-Sea Temperature Differences from Infrared and Microwave Scanning Radiometer Data D. Cimini University of L'Aquila L'Aquila, Italy J. A. Shaw Department of Electrical and Computer Engineering Montana State University Bozeman, Montana E. R. Westwater Cooperative Institute for Research in the Environmental Sciences University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado Introduction A system of two scanning radiometers has been developed by National Oceanic and Atmospheric Administration (NOAA) Environmental Technology Laboratory (ETL) and deployed on the NOAA Ron H. Brown (RHB) Research Vessel (RV) during the Nauru99 cruise in the Tropical Western Pacific,

379

Atmospheric neutrino flux at INO site  

Science Conference Proceedings (OSTI)

To illustrate the calculation of the atmospheric neutrino flux, we briefly explain our calculation scheme and important components, such as primary cosmic ray spectra, interaction model, and geomagnetic model. Then, we calculate the atmospheric neutrino flux at INO site in our calculation scheme. We compare the calculated atmospheric neutrino fluxes predicted at INO with those at other major neutrino detector sites, especially that at SK site.

Honda, Morihiro [Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8582 (Japan)

2011-11-23T23:59:59.000Z

380

Infrared Images of Shock-Heated Tin  

Science Conference Proceedings (OSTI)

High-resolution, gated infrared images were taken of tin samples shock heated to just below the 505 K melting point. Sample surfaces were either polished or diamond-turned, with grain sizes ranging from about 0.05 to 10 mm. A high explosive in contact with a 2-mm-thick tin sample induced a peak sample stress of 18 GPa. Interferometer data from similarly-driven tin shots indicate that immediately after shock breakout the samples spall near the free (imaged) surface with a scab thickness of about 0.1 mm.

Craig W. McCluskey; Mark D. Wilke; William D. Turley; Gerald D. Stevens; Lynn R. Veeser; Michael Grover

2004-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Earth and Atmospheric Sciences | More Science | ORNL  

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

Nuclear Forensics Climate & Environment Sensors and Measurements Chemical & Engineering Materials Computational Earth Science Systems Modeling Geographic Information Science and Technology Materials Science and Engineering Mathematics Physics More Science Home | Science & Discovery | More Science | Earth and Atmospheric Sciences SHARE Earth and Atmospheric Sciences At ORNL, we combine our capabilities in atmospheric science, computational science, and biological and environmental systems science to focus in the cross-disciplinary field of climate change science. We use computer models to improve climate change predications and to measure the impact of global warming on the cycling of chemicals in earth systems. Our Climate Change Science Institute uses models to explore connections among atmosphere,

382

Atmospheric carbon dioxide and the greenhouse effect  

SciTech Connect

This document contains a non-technical review of the problems associated with atmospheric carbon dioxide and the resulting greenhouse effect. (TEM)

Firestine, M.W. (ed.)

1989-05-01T23:59:59.000Z

383

NREL: Process Development and Integration Laboratory - Atmospheric  

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

Atmospheric Processing Platform Capabilities Atmospheric Processing Platform Capabilities The Atmospheric Processing platform in the Process Development and Integration Laboratory offers powerful capabilities with integrated tools for depositing, processing, and characterizing photovoltaic materials and devices. In particular, this platform focuses on different methods to deposit ("write") materials onto a variety of substrates and then further process into optoelectronic materials using rapid thermal processing. You can read more on the rationale for developing this platform and its capabilities. Contact Maikel van Hest for more details on these capabilities. The Atmospheric Processing platform will allow deposition in any sequence and is applicable to activities in all Technology Roadmaps, which include

384

Mesoscale Coupled Ocean-Atmosphere Interaction  

E-Print Network (OSTI)

small-scale features in ocean winds. Science, 303, Chelton,of the regional coupled ocean-atmosphere model RCAO. Borealstress dependence on ocean surface velocity: implications

Seo, Hyodae

2007-01-01T23:59:59.000Z

385

Mesoscale coupled ocean-atmosphere interaction  

E-Print Network (OSTI)

small-scale features in ocean winds. Science, 303, Chelton,of the regional coupled ocean-atmosphere model RCAO. Borealstress dependence on ocean surface velocity: implications

Seo, Hyodae

2007-01-01T23:59:59.000Z

386

FOAM:The Fast Ocean Atmosphere Model  

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

Models Performance User Resources Publications History Developer's Page FOAM The Fast Ocean Atmosphere Model cup2.jpeg (48474 bytes) Image made by Johan Kellum with Vis5D...

387

12.815 Atmospheric Radiation, Fall 2005  

E-Print Network (OSTI)

Introduction to the physics of atmospheric radiation and remote sensing including use of computer codes. Radiative transfer equation including emission and scattering, spectroscopy, Mie theory, and numerical solutions. ...

Prinn, Ronald G.

388

Atmospheric Radiation Measurement Convective and Orographically...  

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

Induced Precipitation Study The U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility is providing the ARM Mobile Facility...

389

Atmospheric Radiation Measurement Program Climate Research Facility...  

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

2 Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report October 1-December 31, 2010 DISCLAIMER This report was prepared as an account of...

390

Atmospheric Radiation Measurement Program Climate Research Facility...  

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

9 Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report April 1-June 30, 2011 DISCLAIMER This report was prepared as an account of work...

391

Jefferson Lab Science Series - Investigating Earth's Atmosphere  

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

Byron Meadows - NASALangley Research Center May 14, 1991 Demonstrations of weather forecasting tools and techniques for experiments in the atmosphere and of lasers used to...

392

Total Atmospheric Crude Oil Distillation Capacity Former ...  

U.S. Energy Information Administration (EIA)

Former Corporation/Refiner Total Atmospheric Crude Oil Distillation Capacity (bbl/cd)a New Corporation/Refiner Date of Sale Table 14. Refinery Sales During 2005

393

Rapid Characterization of Drill Core and Cutting Mineralogy using Infrared  

Open Energy Info (EERE)

Rapid Characterization of Drill Core and Cutting Mineralogy using Infrared Rapid Characterization of Drill Core and Cutting Mineralogy using Infrared Spectroscopy Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Rapid Characterization of Drill Core and Cutting Mineralogy using Infrared Spectroscopy Abstract Infrared spectroscopy is particularly good at identifying awide variety of hydrothermally altered minerals with no samplepreparation, and is especially helpful in discrimination amongclay minerals. We have performed several promising pilot studieson geothermal drill core and cuttings that suggest the efficiencyof the technique to sample continuously and provide alterationlogs similar to geophysical logs. We have successfully identifiedlayered silicates, zeolites, opal, calcite, and iron oxides and

394

Testing and Deployment of an Infrared Thermometer Network at...  

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

four user- definable field-of-view retrievals centered on zenith * Ferroelectric thermal infrared detector does not need cryogenic cooling * Detector is resistant to...

395

Cesiated Carbon Nanoflakes Field Emitter Array Infrared Imager  

Cesiated Carbon Nanoflakes Field Emitter Array Infrared Imager ... The field emission current of each cesiated carbon nanoflake structure is modulated by the

396

First Principles Simulations of the Infrared Spectrum of Liquid...  

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

infrared spectra. These important findings suggest that through the use of high-performance computing, we can improve our predictive power of aqueous environments. Prof. Galli...

397

a prospective for new mid-infrared medical endoscopy  

Science Conference Proceedings (OSTI)

It is shown that chalcogenide glass fiberoptics could underpin new mid-infrared medical endoscopic systems for real-time molecular sensing, imaging and ...

398

Thermal And-Or Near Infrared At Yellowstone Region (Hellman ...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Yellowstone Region (Hellman & Ramsey, 2004) Exploration...

399

Application Of High-Resolution Thermal Infrared Sensors For Geothermal...  

Open Energy Info (EERE)

Of High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference...

400

Infrared Imagery Applied to A Large Buoyant Plume  

Science Conference Proceedings (OSTI)

The possibility of applying infrared imagery to the study of a large, hot plume materialized by carbon particles resulting from the incomplete combustion of fuel oil is investigated.

J-M. Brustet; B. Benech; P. Waldteufel

1981-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

High-Temperature Reactor for Diffuse Reflectance Infrared ...  

High-Temperature Reactor for Diffuse Reflectance Infrared Fourier-Transform Spectroscopy Note: The technology described above is an early stage ...

402

Posters Preliminary Analysis of Ground-Based Microwave and Infrared...  

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

Analysis of Ground-Based Microwave and Infrared Radiance Observations During the Pilot Radiation OBservation Experiment E. R. Westwater, Y. Han, J. H. Churnside, and J. B....

403

Near Infrared Heating and Sintering; A Versatile Tool to Enable ...  

Science Conference Proceedings (OSTI)

A single heating technique (near infrared (NIR)) can bring down oven residence times to seconds. Five examples in relation to HOPV production are: (1) TiO2 ...

404

Laboratory Procedures for using Infrared Thermography to Validate...  

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

925 Laboratory Procedures for using Infrared Thermography to Validate Heat Transfer Models Daniel Trler, Brent T. Griffith, and Dariush K. Arasteh Lawrence Berkeley National...

405

Assessing Cloud Spatial and Vertical Distribution with Infrared...  

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

Cloud Spatial and Vertical Distribution with Infrared Cloud Analyzer I. Genkova and C. N. Long Pacific Northwest National Laboratory Richland, Washington T. Besnard ATMOS SARL Le...

406

Internal Versus SST-Forced Atmospheric Variability as Simulated by an Atmospheric General Circulation Model  

Science Conference Proceedings (OSTI)

The variability of atmospheric flow is analyzed by separating it into an internal part due to atmospheric dynamics only and an external (or forced) part due to the variability of sea surface temperature forcing. The two modes of variability are ...

Ali Harzallah; Robert Sadourny

1995-03-01T23:59:59.000Z

407

Transient Response of a Global Ocean-Atmosphere Model to a Doubling of Atmospheric Carbon Dioxide  

Science Conference Proceedings (OSTI)

The transient response of climate to an instantaneous increase in the atmospheric concentration of carbon dioxide has been investigated by a general circulation model of the coupled ocean-atmosphere-land system with global geography and annual ...

Syukuro Manabe; Kirk Bryan; Michael J. Spelman

1990-05-01T23:59:59.000Z

408

Measurements of Atmospheric Methane and 13C/12C of Atmospheric...  

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

Methane and 13C12C, Flask Air Samples Measurements of Atmospheric Methane and 13C12C of Atmospheric Methane from Flask Air Samples (1999) data Data Investigators Paul Quay and...

409

Response of the Middle Atmosphere to CO2 Doubling: Results from the Canadian Middle Atmosphere Model  

Science Conference Proceedings (OSTI)

The Canadian Middle Atmosphere Model (CMAM) has been used to examine the middle atmosphere response to CO2 doubling. The radiative-photochemical response induced by doubling CO2 alone and the response produced by changes in prescribed SSTs are ...

V. I. Fomichev; A. I. Jonsson; J. de Grandpré; S. R. Beagley; C. McLandress; K. Semeniuk; T. G. Shepherd

2007-04-01T23:59:59.000Z

410

Infrared Thermography in High Level Waste  

Science Conference Proceedings (OSTI)

The Savannah River Site is a Department of Energy, government-owned, company-operated industrial complex built in the 1950s to produce materials used in nuclear weapons. Five reactors were built to support the production of nuclear weapons material. Irradiated materials were moved from the reactors to one of the two chemical separation plants. In these facilities, known as ''canyons,'' the irradiated fuel and target assemblies were chemically processed to separate useful products from waste. Unfortunately, the by-product waste of nuclear material production was a highly radioactive liquid that had to be stored and maintained. In 1993 a strategy was developed to implement predictive maintenance technologies in the Liquid Waste Disposition Project Division responsible for processing the liquid waste. Responsibilities include the processing and treatment of 51 underground tanks designed to hold 750,000 to1,300,000 gallons of liquid waste and operation of a facility that vitrifies highly radioactive liquid waste into glass logs. Electrical and mechanical equipment monitored at these facilities is very similar to that found in non-nuclear industrial plants. Annual inspections are performed on electrical components, roof systems, and mechanical equipment. Troubleshooting and post installation and post-maintenance infrared inspections are performed as needed. In conclusion, regardless of the industry, the use of infrared thermography has proven to be an efficient and effective method of inspection to help improve plant safety and reliability through early detection of equipment problems.

GLEATON, DAVIDT.

2004-08-24T23:59:59.000Z

411

THE DISCOVERY OF Y DWARFS USING DATA FROM THE WIDE-FIELD INFRARED SURVEY EXPLORER (WISE)  

SciTech Connect

We present the discovery of seven ultracool brown dwarfs identified with the Wide-field Infrared Survey Explorer (WISE). Near-infrared spectroscopy reveals deep absorption bands of H{sub 2}O and CH{sub 4} that indicate all seven of the brown dwarfs have spectral types later than UGPS J072227.51-054031.2, the latest-type T dwarf currently known. The spectrum of WISEP J182831.08+265037.8 is distinct in that the heights of the J- and H-band peaks are approximately equal in units of f{sub {lambda}}, so we identify it as the archetypal member of the Y spectral class. The spectra of at least two of the other brown dwarfs exhibit absorption on the blue wing of the H-band peak that we tentatively ascribe to NH{sub 3}. These spectral morphological changes provide a clear transition between the T dwarfs and the Y dwarfs. In order to produce a smooth near-infrared spectral sequence across the T/Y dwarf transition, we have reclassified UGPS 0722-05 as the T9 spectral standard and tentatively assign WISEP J173835.52+273258.9 as the Y0 spectral standard. In total, six of the seven new brown dwarfs are classified as Y dwarfs: four are classified as Y0, one is classified as Y0 (pec?), and WISEP J1828+2650 is classified as >Y0. We have also compared the spectra to the model atmospheres of Marley and Saumon and infer that the brown dwarfs have effective temperatures ranging from 300 K to 500 K, making them the coldest spectroscopically confirmed brown dwarfs known to date.

Cushing, Michael C.; Mainzer, A.; Eisenhardt, Peter R. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, MS 321-520, Pasadena, CA 91109 (United States); Kirkpatrick, J. Davy; Gelino, Christopher R.; Griffith, Roger L.; Marsh, Kenneth A.; Beichman, Charles A. [Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States); Skrutskie, Michael F. [Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States); Burgasser, Adam J. [Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA 92093 (United States); Prato, Lisa A. [Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001 (United States); Simcoe, Robert A. [Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 37, Cambridge, MA 02139 (United States); Marley, Mark S.; Freedman, Richard S. [NASA Ames Research Center, MS 254-3, Moffett Field, CA 94035 (United States); Saumon, D. [Los Alamos National Laboratory, MS F663, Los Alamos, NM 87545 (United States); Wright, Edward L., E-mail: michael.cushing@gmail.com [Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095 (United States)

2011-12-10T23:59:59.000Z

412

Spitzer IRAC mid-infrared photometry of 500-750 brown dwarf  

SciTech Connect

Mid-infrared data, including Spitzer warm-IRAC [3.6] and [4.5] photometry, is critical for understanding the cold population of brown dwarfs now being found, objects which have more in common with planets than stars. As effective temperature (T{sub eff}) drops from 800K to 400K, the fraction of flux emitted beyond 3 {mu}m increases rapidly, from about 40% to > 75%. This rapid increase makes a color like H-[4.5] a very sensitive temperature indicator, and it can be combined with a gravity- and metallicity-sensitive color like H-K to constrain all three of these fundamental properties, which in turn gives us mass and age for these slowly cooling objects. Determination of mid-infrared color trends also allows better exploitation of the WISE mission by the community. We use new Spitzer Cycle 6 IRAC photometry, together with published data, to present trends of color with type for L0 to T10 dwarfs. We also use the atmospheric and evolutionary models of Saumon and Marley to investigate the masses and ages of 13 very late-type T dwarfs, which have H-[4.5] > 3.2 and T{sub eff} {approx} 500K to 750K.

Saumon, Didier [Los Alamos National Laboratory; Leggett, Sandy K [GEMINI OBSERVATORY; Albert, Loic [CFH TELESCOPE; Artigau, Etienne [U OF MONTREAL; Burningham, Ben [HERTFORDSHIRE U; Delfosse, Xavier [OBS. GRENOBLE; Delorme, Philippe [ST. ANDREWS U.; Forveille, Thierry [OBS. GRENOBLE; Lucas, Philip W [HERTFORDSHIRE U; Marley, Mark S [NASA AMES; Pinfield, David J [HERTFORDSHIRE U.; Reyle, Celine [OBS. BESANCON; Smart, Richard L [OSS. ASTRON, TORINO; Warren, Stephen J [IMPERIAL COLLEGE LONDON

2010-10-26T23:59:59.000Z

413

Advances in large-area Hg1-xCdxTe photovoltaic detectors for remote-sensing applications  

Science Conference Proceedings (OSTI)

State-of-the-art large-area photovoltaic (PV) detectors fabricated in HgCdTe grown by molecular beam epitaxy (MBE) have been demonstrated for the Crosstrack Infrared Sounder (CrIS) instrument. Large-area devices (1 mm in diameter) yielded excellent electrical ... Keywords: HgCdTe, crosstrack infrared sounder, molecular beam epitaxy (MBE), photovoltaic detectors, remote sensing

P. S. Wijewarnasuriya; M. Zandian; J. Phillips; D. Edwall; R. E. Dewames; G. Hildebrandt; J. Bajaj; J. M. Arias; A. I. D'Souza; F. Moore

2002-07-01T23:59:59.000Z

414

Human effects on the global atmosphere  

SciTech Connect

This review considers whether human activities can significantly change important functions of the global atmosphere by altering the amount or distribution of certain trace species. It deals with three specific topics: stratopheric ozone, the role of species other than carbon dioxide on the greenhouse effect, and certain recently recognized atmospheric consequences of a large scale nuclear war. 64 references, 10 figures, 2 tables.

Johnston, H.S.

1984-01-01T23:59:59.000Z

415

Overwater Atmospheric Diffusion: Measurements and Parameterization  

Science Conference Proceedings (OSTI)

A series of ten atmospheric tracer experiments provided 62 hours of overwater atmospheric dispersion data. Sulfur hexafluoride (SF6) was released as the tracer gas at a height of 13 m from a ship positioned about 7 km off the central California ...

Walter F. Dabberdt

1986-08-01T23:59:59.000Z

416

Measurements of Atmospheric Nanoparticles (1875–1980)  

Science Conference Proceedings (OSTI)

The atmosphere contains a large variety of particles, ranging in size from near molecular (~1 nm) to larger than 10,000 nm. The total number concentration N of particles is dominated by nanoparticles ? 100 nm in diameter. Discovery of atmospheric ...

Volker Mohnen; George M. Hidy

2010-11-01T23:59:59.000Z

417

Earth's early atmosphere  

SciTech Connect

Ideas about atmospheric composition and climate on the early Earth have evolved considerably over the last 30 years, but many uncertainties still remain. It is generally agreed that the atmosphere contained little or no free oxygen initially and that oxygen concentrations increased markely near 2.0 billion years ago, but the precise timing of and reasons for its rise remain unexplained. Likewise, it is usually conceded that the atmospheric greenhouse effect must have been higher in the past to offset reduced solar luminosity, but the levels of atmospheric carbon cioxide and other greenhouse gases required remain speculative. A better understanding of past atmospheric evolution is important to understanding the evolution of life and to predicting whether Earth-like planets might exist elsewhere in the galaxy.

Kasting, J.F. (Pennsylvania State Univ., University Park (United States))

1993-02-12T23:59:59.000Z

418

Near-infrared spectroscopic tissue imaging for medical applications  

DOE Patents (OSTI)

Near infrared imaging using elastic light scattering and tissue autofluorescence are explored for medical applications. The approach involves imaging using cross-polarized elastic light scattering and tissue autofluorescence in the Near Infra-Red (NIR) coupled with image processing and inter-image operations to differentiate human tissue components.

Demos; Stavros (Livermore, CA), Staggs; Michael C. (Tracy, CA)

2006-03-21T23:59:59.000Z

419

Near-infrared spectroscopic tissue imaging for medical applications  

DOE Patents (OSTI)

Near infrared imaging using elastic light scattering and tissue autofluorescence are explored for medical applications. The approach involves imaging using cross-polarized elastic light scattering and tissue autofluorescence in the Near Infra-Red (NIR) coupled with image processing and inter-image operations to differentiate human tissue components.

Demos, Stavros (Livermore, CA); Staggs, Michael C. (Tracy, CA)

2006-12-12T23:59:59.000Z

420

Apparatus and method for transient thermal infrared spectrometry  

DOE Patents (OSTI)

A method and apparatus for enabling analysis of a material (16, 42) by applying a cooling medium (20, 54) to cool a thin surface layer portion of the material and to transiently generate a temperature differential between the thin surface layer portion and the lower portion of the material sufficient to alter the thermal infrared emission spectrum of the material from the black-body thermal infrared emission spectrum of the material. The altered thermal infrared emission spectrum of the material is detected by a spectrometer/detector (28, 50) while the altered thermal infrared emission spectrum is sufficiently free of self-absorption by the material of the emitted infrared radiation. The detection is effected prior to the temperature differential propagating into the lower portion of the material to an extent such that the altered thermal infrared emission spectrum is no longer sufficiently free of self-absorption by the material of emitted infrared radiation, so that the detected altered thermal infrared emission spectrum is indicative of the characteristics relating to the molecular composition of the material.

McClelland, John F. (Ames, IA); Jones, Roger W. (Ames, IA)

1991-12-03T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

OIL SPILL SENSOR USING MULTISPECTRAL INFRARED IMAGING VIA 1 MINIMIZATION  

E-Print Network (OSTI)

OIL SPILL SENSOR USING MULTISPECTRAL INFRARED IMAGING VIA 1 MINIMIZATION Yingying Li , Wei Computational and Applied Mathematics, Rice University ABSTRACT Early detection of oil spill events is the key in detecting the early onset of a small-scale oil spill event. Based on an infrared oil-water contrast model

Yin, Wotao

422

Guideline for Developing and Managing an Infrared Thermography (IRT) Program  

Science Conference Proceedings (OSTI)

The Guideline for Developing and Managing an Infrared Thermography Program is an extension of a number of reports addressing the use and benefits of infrared thermography (IRT) as a diagnostic tool. This document expands on more of the technology's intricacies, as well as defining procedures for setting up a comprehensive IRT program.

2001-09-27T23:59:59.000Z

423

Infrared NDT methods applied to solar cell and panel characterization  

DOE Green Energy (OSTI)

Infrared nondestructive testing (NDT) methods are described that have a good potential for providing valuable data concerning solar cell or panel characteristics without requiring contact with the photovoltaic device. Preliminary tests with cells and panels were conducted and the infrared NDT results are presented and discussed. (MHR)

Green, D. R.; Olsen, L. C.

1978-10-20T23:59:59.000Z

424

Minutiae feature analysis for infrared hand vein pattern biometrics  

Science Conference Proceedings (OSTI)

This paper proposes a novel technique to analyze the infrared vein patterns in the back of the hand for biometric purposes. The technique utilizes the minutiae features extracted from the vein patterns for recognition, which include bifurcation points ... Keywords: Biometrics, Infrared, Minutiae, Vein pattern

Lingyu Wang; Graham Leedham; David Siu-Yeung Cho

2008-03-01T23:59:59.000Z

425

Compound parabolic concentrators for narrowband wireless infrared receivers  

E-Print Network (OSTI)

Compound parabolic concentrators for narrowband wireless infrared receivers Keang-Po Ho Joseph M and hollow compound parabolic concentrators (CPCs), for use in free-space infrared communication receivers terms: compound parabolic concentrators (CPCs); optical bandpass fil- ters; Monte Carlo ray tracing

Kahn, Joseph M.

426

Hybrid Infrared and Visible Light Projection for Location Tracking  

E-Print Network (OSTI)

-output light emitting diodes. Figure 5. Inside our projector: A) LED light source B) culminating lens C) DMD for application content. In [4], Nii et al. created an infrared projector prototype using discrete light emitting diodes (LEDs). The projection lens focused directly onto the LED array creating a low resolution infrared

Olsen Jr., Dan R.

427

Infrared and Visible Satellite Rain Estimation. Part II: A Cloud Definition Approach  

Science Conference Proceedings (OSTI)

This study examines the relationships between satellite infrared clouds and rainfall, and infrared-threshold visible clouds and rainfall. Clouds are defined by the outline of the 253 K isotherm. Cloud infrared area was highly correlated with rain ...

Andrew J. Negri; Robert F. Adler

1987-11-01T23:59:59.000Z

428

Geothermal Reconnaissance From Quantitative Analysis Of Thermal Infrared  

Open Energy Info (EERE)

Geothermal Reconnaissance From Quantitative Analysis Of Thermal Infrared Geothermal Reconnaissance From Quantitative Analysis Of Thermal Infrared Imagery Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Reference Material: Geothermal Reconnaissance From Quantitative Analysis Of Thermal Infrared Imagery Details Activities (1) Areas (1) Regions (0) Abstract: Unavailable Author(s): K. Watson Published: Proceedings of the ninth international symposium on remote sensing of environment, April 15-19, p. 1919-1932., 1974 Document Number: Unavailable DOI: Unavailable Thermal And-Or Near Infrared At Raft River Geothermal Area (1974-1976) Raft River Geothermal Area Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Reconnaissance_From_Quantitative_Analysis_Of_Thermal_Infrared_Imagery&oldid=387504" Category:

429

Geothermal Exploration with Visible through Long Wave Infrared Imaging  

Open Energy Info (EERE)

with Visible through Long Wave Infrared Imaging with Visible through Long Wave Infrared Imaging Spectrometers Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal Exploration with Visible through Long Wave Infrared Imaging Spectrometers Abstract Surface minerals of active geothermal systems have been mapped using visible-short wave infrared and mid wave and long wave imaging spectrometers separately. May and June 2008, the Prospectir sensor and SEBASS (Spatially Enhanced Broadband Array Spectrograph System) were located on together on a roll compensated mount viewing through the same camera port in a Twin Otter. These two imaging spectrometers have similar Instantaneous Fields of View (IFOV) and together collect over 600 channels of spectral information from the visible to the long wave infrared.

430

INFRARED ABSORPTION SPECTROSCOPY AND CHEMICAL KINETICS OF FREE RADICALS  

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

mNAL PERFORMANCE REPORT mNAL PERFORMANCE REPORT for INFRARED ABSORPTION SPECTROSCOPY AND CHEMICAL KINETICS OF FREE RADICALS DE-FG05-85ER13439 1-AUG-1985 to 31-JUL-1994 Robert F. Curl and Graham P. Glass Principal Investigators Introduction This research was directed at the detection, monitoring, and study (by infrared absorption spectroscopy) of the chemical kinetic behavior of small free radical species thought to be important intermediates in combustion. The work typically progressed from the detection and analysis of the infrared spectrum of combustion radical to the utilization of the infrared spectrum thus obtained in the investigation of chemical kinetics of the radical species. The methodology employed was infrared kinetic spectroscopy. In this technique the radical is produced by UV flash photolysis using an excimer laser and then

431

Oil and gas exploration system and method for detecting trace amounts of hydrocarbon gases in the atmosphere  

DOE Patents (OSTI)

An oil and gas exploration system and method for land and airborne operations, the system and method used for locating subsurface hydrocarbon deposits based upon a remote detection of trace amounts of gases in the atmosphere. The detection of one or more target gases in the atmosphere is used to indicate a possible subsurface oil and gas deposit. By mapping a plurality of gas targets over a selected survey area, the survey area can be analyzed for measurable concentration anomalies. The anomalies are interpreted along with other exploration data to evaluate the value of an underground deposit. The system includes a differential absorption lidar (DIAL) system with a spectroscopic grade laser light and a light detector. The laser light is continuously tunable in a mid-infrared range, 2 to 5 micrometers, for choosing appropriate wavelengths to measure different gases and avoid absorption bands of interference gases. The laser light has sufficient optical energy to measure atmospheric concentrations of a gas over a path as long as a mile and greater. The detection of the gas is based on optical absorption measurements at specific wavelengths in the open atmosphere. Light that is detected using the light detector contains an absorption signature acquired as the light travels through the atmosphere from the laser source and back to the light detector. The absorption signature of each gas is processed and then analyzed to determine if a potential anomaly exists.

Wamsley, Paula R. (Littleton, CO); Weimer, Carl S. (Littleton, CO); Nelson, Loren D. (Evergreen, CO); O' Brien, Martin J. (Pine, CO)

2003-01-01T23:59:59.000Z

432

Automated Spot Weld Inspection using Infrared Thermography  

Science Conference Proceedings (OSTI)

An automated non-contact and non-destructive resistance spot weld inspection system based on infrared (IR) thermography was developed for post-weld applications. During inspection, a weld coupon was heated up by an auxiliary induction heating device from one side of the weld, while the resulting thermal waves on the other side were observed by an IR camera. The IR images were analyzed to extract a thermal signature based on normalized heating time, which was then quantitatively correlated to the spot weld nugget size. The use of normalized instead of absolute IR intensity was found to be useful in minimizing the sensitivity to the unknown surface conditions and environment interference. Application of the IR-based inspection system to different advanced high strength steels, thickness gauges and coatings were discussed.

Chen, Jian [ORNL; Zhang, Wei [ORNL; Yu, Zhenzhen [ORNL; Feng, Zhili [ORNL

2012-01-01T23:59:59.000Z

433

Pigments which reflect infrared radiation from fire  

DOE Patents (OSTI)

Conventional paints transmit or absorb most of the intense infrared (IR) radiation emitted by fire, causing them to contribute to the spread of fire. The present invention comprises a fire retardant paint additive that reflects the thermal IR radiation emitted by fire in the 1 to 20 micrometer ({micro}m) wavelength range. The important spectral ranges for fire control are typically about 1 to about 8 {micro}m or, for cool smoky fires, about 2 {micro}m to about 16 {micro}m. The improved inventive coatings reflect adverse electromagnetic energy and slow the spread of fire. Specific IR reflective pigments include titanium dioxide (rutile) and red iron oxide pigments with diameters of about 1 {micro}m to about 2 {micro}m and thin leafing aluminum flake pigments. 4 figs.

Berdahl, P.H.

1998-09-22T23:59:59.000Z

434

Tunable infrared source employing Raman mixing  

SciTech Connect

A tunable source of infrared radiation is obtained by irradiating an assemblage of Raman active gaseous atoms or molecules with a high intensity pumping beam of coherent radiation at a pump frequency .omega..sub.p to stimulate the generation of Stokes wave energy at a Stokes frequency .omega..sub.s and to stimulate the Raman resonant mode at the Raman mode frequency .omega..sub.R within the irradiated assemblage where the pump frequency .omega..sub.p minus the Stokes frequency .omega..sub.s is equal to the Raman mode frequency .omega..sub.R. The stimulated assemblage is irradiated with a tunable source of coherent radiation at a frequency .omega..sub.i to generate the output infrared radiation of the frequency .omega..sub.0 which is related to the Raman mode frequency .omega..sub.R and the input wave .omega..sub.i by the relation .omega..sub.0 =.omega..sub.i .+-..omega..sub.R. In one embodiment the interaction between the pump wave energy .omega..sub.p and the tunable input wave energy .omega..sub.i is collinear and the ratio of the phase velocity mismatch factor .DELTA.k to the electric field exponential gain coefficient T is within the range of 0.1 to 5. In another embodiment the pump wave energy .omega..sub.p and the tunable input wave energy .omega..sub.i have velocity vectors k.sub.p and k.sub.i which cross at an angle to each other to compensate for phase velocity mismatches in the medium. In another embodiment, the Stokes wave energy .omega..sub.s is generated by pump energy .omega..sub.p in a first Raman cell and .omega..sub.s, .omega..sub.i and .omega..sub.p are combined in a second Raman mixing cell to produce the output at .omega..sub.i.

Byer, Robert L. (Stanford, CA); Herbst, Richard L. (Menlo Park, CA)

1980-01-01T23:59:59.000Z

435

ARM - Publications: Science Team Meeting Documents: Seasonal Dependance of  

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

Seasonal Dependance of the Infrared Land Surface Emissivity in the Vicinity Seasonal Dependance of the Infrared Land Surface Emissivity in the Vicinity of the ARM SGP Central Facility Knuteson, Robert University Of Wisconsin Feltz, Wayne University of Wisconsin Revercomb, Henry University Of Wisconsin-Madison Tobin, David University of Wisconsin-Madison Satellite observations have been used to derive a seasonal dependance of the infrared land surface emissivity in the vicinity of the ARM Southern Great Plains (SGP) Central Facility site. In particular, the observations of the Atmospheric InfraRed Sounder (AIRS) on the NASA EOS Aqua platform have been used over the two year period from Sept 2002 to Sept 2004 to derive spectra of IR land surface emissivity across the IR window regions. These satellite observations have been used to empirically fit the

436

ARM - Publications: Science Team Meeting Documents: AIRS retrievals of  

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

AIRS retrievals of atmospheric profiles of temperature and humidity - AIRS retrievals of atmospheric profiles of temperature and humidity - comparisons with radiosondes and ship-based remote sensing during AEROSE Minnett, Peter University of Miami Szczodrak, Malgorzata University of Miami Feltz, Wayne University of Wisconsin Nalli, Nicholas NOAA/NESDIS The World Meteorological Organization (WMO) has determined that significantly improving weather forecasting would require global temperature and moisture soundings with at least the accuracy of the current radiosondes. The Atmospheric Infrared Sounder (AIRS) on board of the NASA EOS Aqua satellite, launched in 2002, is designed to provide high-accuracy atmospheric profiles of temperature and humidity. The validation of the AIRS atmospheric profile retrieval scheme is a continuing

437

Synoptic Reorganization of Atmospheric Flow during the Last Glacial Maximum  

Science Conference Proceedings (OSTI)

A coupled global atmosphere–ocean model of intermediate complexity is used to study the influence of glacial boundary conditions on the atmospheric circulation during the Last Glacial Maximum in a systematical manner. A web of atmospheric ...

Flávio Justino; Axel Timmermann; Ute Merkel; Enio P. Souza

2005-08-01T23:59:59.000Z

438

The NCAR Atmosphere-Surface Turbulent Exchange Research (ASTER) Facility  

Science Conference Proceedings (OSTI)

The Atmosphere-Surface Turbulent Exchange Research (ASTER) facility developed at the National Center for Atmospheric Research (NCAR) will support observational research on the structure of the atmospheric surface layer. ASTER will provide state-...

J. A. Businger; W. F. Dabberdt; A. C. Delany; T. W. Horst; C. L. Martin; S. P. Oncley; S. R. Semmer

1990-07-01T23:59:59.000Z

439

Estimating the Meridional Energy Transports in the Atmosphere and Ocean  

Science Conference Proceedings (OSTI)

The poleward energy transports in the atmosphere–ocean system are estimated for the annual mean and the four seasons based on satellite measurements of the net radiation balance at the top of the atmosphere, atmospheric transports of energy at ...

B. C. Carissimo; A. H. Oort; T. H. Vonder Haar

1985-01-01T23:59:59.000Z

440

Biogenic Hydrocarbons in the Atmospheric Boundary Layer: A Review  

Science Conference Proceedings (OSTI)

Nonmethane hydrocarbons are ubiquitous trace atmospheric constituents yet they control the oxidation capacity of the atmosphere. Both anthropogenic and biogenic processes contribute to the release of hydrocarbons to the atmosphere. In this ...

J. D. Fuentes; L. Gu; M. Lerdau; R. Atkinson; D. Baldocchi; J. W. Bottenheim; P. Ciccioli; B. Lamb; C. Geron; A. Guenther; T. D. Sharkey; W. Stockwell

2000-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Vacillations in a Coupled Ocean–Atmosphere Model  

Science Conference Proceedings (OSTI)

Results are presented from a 35-year integration of a coupled ocean-atmosphere model. Both ocean and atmosphere are two-level, nonlinear primitive equations models. The global atmospheric model is forced by a steady, zonally symmetric Newtonian ...

Paul S. Schopf; Max J. Suarez

1988-02-01T23:59:59.000Z

442

Rainfall and Radiative Heating Rates from TOGA COARE Atmospheric Budgets  

Science Conference Proceedings (OSTI)

Atmospheric heat and moisture budgets are used to determine rainfall and radiative heating rates over the western Pacific warm pool during the Tropical Ocean Global Atmosphere Coupled Ocean–Atmosphere Response Experiment (TOGA COARE). Results are ...

Richard H. Johnson; Paul E. Ciesielski

2000-05-01T23:59:59.000Z

443

Including Atmospheric Layers in Vegetation and Urban Offline Surface Schemes  

Science Conference Proceedings (OSTI)

A formulation to include prognostic atmospheric layers in offline surface schemes is derived from atmospheric equations. Whereas multilayer schemes developed previously need a complex coupling between atmospheric-model levels and surface-scheme ...

Valéry Masson; Yann Seity

2009-07-01T23:59:59.000Z

444

Homoclinic Dynamics: A Scenario for Atmospheric Ultralow-Frequency Variability  

Science Conference Proceedings (OSTI)

In this paper, a link will be established between atmospheric ultralow-frequency variability (ULFV) and the occurrence of homoclinic dynamics in models of large-scale atmospheric flow. It is known that uncoupled atmosphere models possess ...

Daan T. Crommelin

2002-05-01T23:59:59.000Z

445

Identifying Cloud-Uncontaminated AIRS Spectra from Cloudy FOV Based on Cloud-Top Pressure and Weighting Functions  

Science Conference Proceedings (OSTI)

An effort is made to increase the number of Advanced Infrared Sounder (AIRS) cloud-uncontaminated infrared data for regional mesoscale data assimilation and short-term quantitative precipitation forecast (QPF) applications. The cloud-top pressure ...

M. Carrier; X. Zou; William M. Lapenta

2007-06-01T23:59:59.000Z

446

Atmospheric Circulation Response to an Instantaneous Doubling of Carbon Dioxide. Part II: Atmospheric Transient Adjustment and Its Dynamics  

Science Conference Proceedings (OSTI)

The dynamical mechanisms underlying the transient circulation adjustment in the extratropical atmosphere after the instantaneous doubling of carbon dioxide are investigated using the National Center for Atmospheric Research Community Atmosphere ...

Yutian Wu; Richard Seager; Tiffany A. Shaw; Mingfang Ting; Naomi Naik

2013-02-01T23:59:59.000Z

447

Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon...  

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

Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon Dioxide and Carbon-13 in Methane Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon Dioxide and...

448

A U. S. Department of Energy User Facility Atmospheric Radiation  

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

S. Department of Energy User Facility Atmospheric Radiation Measurement Climate Research Facility U.S. Department of Energy Atmospheric Radiation Measurement Program DOESC-ARM...

449

ATMOSPHERIC AEROSOL RESEARCH ANNUAL REPORT 1975-76  

E-Print Network (OSTI)

this room ATMOSPHERIC AEROSOL RESEARCH -RECEIVED •I.AWSSKCEDIVISION ATMOSPHERIC AEROSOL RESEARCH ANNUAL REPORTMass and Composition of Aerosol as a Function of Time,

Novakov, T.

2010-01-01T23:59:59.000Z

450

ATMOSPHERIC AEROSOL RESEARCH, ANNUAL REPORT 1976-77  

E-Print Network (OSTI)

DIVISION ATMOSPHERIC AEROSOL RESEARCH ANNUAL REPORTLow-Z Elements in Atmospheric Aerosol Particles by Nuclearof sulfur dioxide by aerosols of manganese sulfate," Ind.

Novakov, T.

2010-01-01T23:59:59.000Z

451

Comparison between Model Simulations and Measurements of Hyperspectral Far- infrared Radiation from FIRST during the RHUBC-II Campaign  

E-Print Network (OSTI)

Surface downward far-infrared (far-IR) spectra were collected from NASA’s Far-Infrared Spectroscopy of the Troposphere (FIRST) instrument from August to October 2009 at an altitude of 5.4 km near the summit of Cerro Toco, Chile. This region is known for its dry, cold, and dominantly clear atmosphere, which is optimal for studying the effects, that water vapor and cirrus clouds have on the far-IR. Comparisons with Line-By-Line Discrete Ordinants Radiative Transfer model, LBLDIS, show that FIRST observes the very fine spectral structure in the far-IR with differences as small as +/- 0.7% for both clear-sky and cloudy-sky simulations. Clear sky model analysis demonstrated the greatest sensitivity to atmospheric conditions is between 300 and 500 cm-1. The cloudy-sky simulations demonstrated that the far-IR radiation has minimal sensitivity to cloud particle effective radius, yet is very sensitive to cloud optical thickness at wavenumbers between 400 - 600 cm-1. In fact, cirrus optical thickness found to be inferred from the brightness temperature differences at 250 and 559.5 cm-1. Aerosols proved to reduce downwelling radiance by half that a clear-sky would emit, but had little effect on the total far-IR radiative forcing. Furthermore, these far-IR measurements open a new window to understanding the radiative impacts of various atmospheric constituents such as water vapor and clouds, and to understanding and modeling the Earth’s climate and energy budget.

Baugher, Elizabeth

2011-12-01T23:59:59.000Z

452

Shortwave Transport in the Cloudy Atmosphere  

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

Shortwave Transport in the Cloudy Atmosphere Shortwave Transport in the Cloudy Atmosphere by Anomalous/Lévy Diffusion: New Diagnostics Using FORTÉ Lightning Data A. B. Davis Los Alamos National Laboratory Space & Remote Sensing Sciences Group Los Alamos, New Mexico D. M. Suszcynsky Los Alamos National Laboratory Space & Atmospheric Sciences Group Los Alamos, New Mexico A. Marshak National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland Introduction Anomalous photon diffusion can be described as an ad hoc modification of the popular 2-stream approximation, specifically the δ-Eddington/diffusion version, for monochromatic radiative transfer in a scattering plane-parallel atmosphere. In the physical picture that describes the standard diffusion (hence

453

Atmospheric considerations for central receiver power plants  

DOE Green Energy (OSTI)

This report documents the results of a study of the effects of atmospheric attenuation, turbulent scattering, and the use of cooling towers on the performance of solar thermal central receiver power plants.

Henderson, R.G.; Pitter, R.L.

1979-06-01T23:59:59.000Z

454

Spectral Preconditioners for Nonhydrostatic Atmospheric Models  

Science Conference Proceedings (OSTI)

The elliptic problems in semi-implicit nonhydrostatic atmospheric models are difficult. Typically, they are poorly conditioned, nonseparable, contain cross-derivative terms, and are often nonsymmetric. Here, the resulting linear system is solved ...

Stephen J. Thomas; Joshua P. Hacker; Piotr K. Smolarkiewicz; Roland B. Stull

2003-10-01T23:59:59.000Z

455

Toward a Fully Lagrangian Atmospheric Modeling System  

Science Conference Proceedings (OSTI)

An improved treatment of advection is essential for atmospheric transport and chemistry models. Eulerian treatments are generally plagued with instabilities, unrealistic negative constituent values, diffusion, and dispersion errors. A higher-...

Jahrul M. Alam; John C. Lin

2008-12-01T23:59:59.000Z

456

Filtering of Gravity Modes in Atmospheric Models  

Science Conference Proceedings (OSTI)

The impact of gravity modes in atmospheric model predictions is assessed quantitatively by comparing integrations with a normal mode initialized primitive equation model and its corresponding pseudogeostrophic form to document some generally ...

F. Baer; J. J. Tribbia

1984-05-01T23:59:59.000Z

457

Stochastic Dynamics of the Midlatitude Atmospheric Jet  

Science Conference Proceedings (OSTI)

The innate tendency of the background straining field of the midlatitude atmospheric jet to preferentially amplify a subset of disturbances produces a characteristic response to stochastic perturbation whether the perturbations are internally ...

Brian F. Farrell; Peteros J. Ioannou

1995-05-01T23:59:59.000Z

458

Removal of Atmospheric Effects prom AVHRR Albedos  

Science Conference Proceedings (OSTI)

Based on numerical simulations, coefficients are determined to be used in a linear relationship between clear-sky planetary albedo and surface albedo. Thew coefficients are given as functions of solar zenith angle and atmospheric parameters for ...

Peter Koepke

1989-12-01T23:59:59.000Z

459

HYPERsensarium : an archive of atmospheric conditions  

E-Print Network (OSTI)

HYPERsensarium proposes a tangible interface of atmospheres for public experience through an archive of historical and projected weathers. While architecture's purpose has long been to act as the technical boundary between ...

Shaw, Kelly E. (Kelly Evelyn)

2013-01-01T23:59:59.000Z

460

Exploring Atmospheric Aerosols by Twilight Photometry  

Science Conference Proceedings (OSTI)

The instrument twilight photometer was designed, developed, and installed at the Indian Institute of Tropical Meteorology (IITM), Pune, India (18°43?N, 73°51?E), to monitor the vertical distribution of atmospheric aerosols. The instrument, based ...

B. Padma Kumari; S. H. Kulkarni; D. B. Jadhav; A. L. Londhe; H. K. Trimbake

2008-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Carbon Dioxide Variability and Atmospheric Circulation  

Science Conference Proceedings (OSTI)

Hourly values of the concentration of atmospheric carbon dioxide at Mauna Loa Observatory (MLO) formed the basis for an investigation of concentration fluctuations on daily to monthly time scales. In agreement with earlier studies we found no ...

James C. Sadler; Colin S. Ramage; Arnold M. Hori

1982-06-01T23:59:59.000Z

462

Potential Vorticity in a Moist Atmosphere  

Science Conference Proceedings (OSTI)

The potential vorticity principle for a nonhydrostatic, moist, precipitating atmosphere is derived. An appropriate generalization of the well-known (dry) Ertel potential vorticity is found to be P = ??1(2? + × u)?·???, where ? is the total ...

Wayne H. Schubert; Scott A. Hausman; Matthew Garcia; Katsuyuki V. Ooyama; Hung-Chi Kuo

2001-11-01T23:59:59.000Z

463

Nonlinear Atmospheric Adjustment to Thermal Forcing  

Science Conference Proceedings (OSTI)

A nonlinear, numerical model of a compressible atmosphere is used to simulate the hydrostatic and geostrophic adjustment to a localized prescribed heating applied over five minutes with a size characteristic of an isolated, deep, cumulus cloud. ...

Paul F. Fanelli; Peter R. Bannon

2005-12-01T23:59:59.000Z

464

Effect of Nonlinearity on Atmospheric Gravity Waves  

Science Conference Proceedings (OSTI)

The weakly nonlinear limit of two-dimensional gravity waves in an incompressible, inviscid and stably stratified atmosphere is studied. The three-wave resonant interaction theory indicates an energy cascade from a vertically propagating wave (...

Mostafa M. Ibrahim

1987-02-01T23:59:59.000Z

465

Shear Excitation of Atmospheric Gravity Waves  

Science Conference Proceedings (OSTI)

Unstable Velocity shears are a Common source of vertically propagating gravity waves in the atmosphere. However, the growth rates of unstable modes predicted by linear theory cannot always amount for their observed importance.

David C. Fritts

1982-09-01T23:59:59.000Z

466

Dynamic Stabilization of Atmospheric Single Column Models  

Science Conference Proceedings (OSTI)

Single column models (SCMs) provide an economical framework for assessing the sensitivity of atmospheric temperature and humidity to natural and imposed perturbations, and also for developing improved representations of diabatic processes in ...

John W. Bergman; Prashant D. Sardeshmukh

2004-03-01T23:59:59.000Z

467

Intraseasonal Variability in a Dry Atmospheric Model  

Science Conference Proceedings (OSTI)

A long integration of a primitive equation dry atmospheric model with time-independent forcing under boreal winter conditions is analyzed. A variety of techniques such as time filtering, space–time spectral analysis, and lag regressions are used ...

Hai Lin; Gilbert Brunet; Jacques Derome

2007-07-01T23:59:59.000Z

468

The Atmospheric Mesoscale Dispersion Modeling System  

Science Conference Proceedings (OSTI)

The mesoscale dispersion modeling system (MDMS) described herein is under development as a simulation tool to investigate atmospheric flow and pollution dispersion over complex terrain for domains up to several hundred kilometers. The system ...

Marek Uliasz

1993-01-01T23:59:59.000Z

469

Atmospheric Entropy. Part I: Climate Dissipation Structure  

Science Conference Proceedings (OSTI)

Atmospheric entropy and its association with climate dissipation are investigated. The balance equation for entropy is derived through the mean and transient thermal and moisture equations. The entropy production contains the internal and external ...

Jiangnan Li; Petr Chylek

2012-05-01T23:59:59.000Z

470

Atmospheric Turbidity over Central North Carolina  

Science Conference Proceedings (OSTI)

Some 8500 observations of atmospheric turbidity, taken at Raleigh, North Carolina from July 1969 to July 1975 are analyzed for within-day and day-to-day variations and their dependence on meteorological parameters. The annual average turbidity of ...

James T. Peterson; Edwin C. Flowers; Guillermo J. Berri; Cheryl L. Reynolds; John H. Rudisill

1981-03-01T23:59:59.000Z

471

Meteorological Tracer Techniques for Parameterizing Atmospheric Dispersion  

Science Conference Proceedings (OSTI)

Although tracer materials have been used in atmospheric dispersion studies for decades, basic information about meteorological tracer techniques is scattered among a number of different sources. This paper attempts to pull together this ...

Warren B. Johnson

1983-05-01T23:59:59.000Z

472

Linear Baroclinic Instability in the Martian Atmosphere  

Science Conference Proceedings (OSTI)

The linear baroclinic instability of zonal-mean flows like those in the wintertime Martian atmosphere under both relatively nondusty and highly dusty conditions is examined using a spherical quasi-geostrophic model. The basic states are idealized,...

Jeffrey R. Barnes

1984-05-01T23:59:59.000Z

473

State-Space Modeling for Atmospheric Pollution  

Science Conference Proceedings (OSTI)

Two different aspect concerning the state-space modeling for atmospheric pollution are dealt with separately in this paper: (i) the treatment of the advection-diffusion equation and (ii) the use of time series analysis.

E. Hernández; F. Martín; F. Valero

1991-06-01T23:59:59.000Z

474

Resonant Planetary Waves in a Spherical Atmosphere  

Science Conference Proceedings (OSTI)

A global model of planetary wave propagation in a spherical atmosphere is used to examine the spectrum of free or resonant planetary waves of the solstitial stratosphere. These free modes are located by forcing the model with a weak periodic ...

Mark R. Schoeberl; John H. E. Clark

1980-01-01T23:59:59.000Z

475

The Flywheel Effect in the Middle Atmosphere  

Science Conference Proceedings (OSTI)

Because of the requirement of geostrophic balance, mechanical inertia can affect the thermal response of the atmosphere to transient heating. We examine some very simple linear models of this “flywheel effect,” and discuss their possible ...

Roelof K. Snieder; Stephen B. Fels

1988-12-01T23:59:59.000Z

476

Atmosphere–Ocean Modeling Exploiting Fluid Isomorphisms  

Science Conference Proceedings (OSTI)

Mathematical isomorphisms between the hydrostatic equations that govern the evolution of a compressible atmosphere and an incompressible ocean are described and exploited to guide the design of a hydrodynamical kernel for simulation of either ...

John Marshall; Alistair Adcroft; Jean-Michel Campin; Chris Hill; Andy White

2004-12-01T23:59:59.000Z

477

Basic Meteorological Observations for Schools: Atmospheric Pressure  

Science Conference Proceedings (OSTI)

This article addresses measurement of atmospheric surface pressure using economical instruments. It is intended to provide members of the Society with a ready reference to respond to inquiries from earth and physical science teachers at the ...

John T. Snow; Michelle E. Akridge; Shawn B. Harley

1992-06-01T23:59:59.000Z

478

A Comprehensive Ocean-Atmosphere Data Set  

Science Conference Proceedings (OSTI)

Development is described of a Comprehensive Ocean-Atmosphere Data Set (COADS)—the result of a cooperative project to collect global weather observations taken near the ocean's surface since 1854, primarily from merchant ships, into a compact and ...

Scott D. Woodruff; Ralph J. Slutz; Roy L. Jenne; Peter M. Steurer

1987-10-01T23:59:59.000Z

479

Effects of Atmospheric Turbulence on Ballistic Testing  

Science Conference Proceedings (OSTI)

The effects of atmospheric turbulence on munition target scatter are determined from numerical simulations of ballistic trajectories through many realizations of realistic simulated turbulent wind fields. A technique is evaluated for correcting ...

Rod Frehlich; Robert Sharman; Charles Clough; Michael Padovani; Kelly Fling; Ward Boughers; W. Scott Walton

2008-05-01T23:59:59.000Z

480

Mars Atmosphere Pressure Periodicities from Viking Observations  

Science Conference Proceedings (OSTI)

The first martian year of pressure data taken by the Viking landers on Mars is subjected to power spectrum analysis. The analysis suggests that strong periodicities are present in the martian atmosphere, especially at the high-latitude (48°N) ...

R. D. Sharman; J. A. Ryan

1980-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric infrared sounder" 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

Pierre Auger Atmosphere-Monitoring Lidar System  

E-Print Network (OSTI)

The fluorescence-detection techniques of cosmic-ray air-shower experiments require precise knowledge of atmospheric properties to reconstruct air-shower energies. Up to now, the atmosphere in desert-like areas was assumed to be stable enough so that occasional calibration of atmospheric attenuation would suffice to reconstruct shower profiles. However, serious difficulties have been reported in recent fluorescence-detector experiments causing systematic errors in cosmic ray spectra at extreme energies. Therefore, a scanning backscatter lidar system has been constructed for the Pierre Auger Observatory in Malargue, Argentina, where on-line atmospheric monitoring will be performed. One lidar system is already deployed at the Los Leones fluorescence detector site and the second one is currently (April 2003) under construction at the Coihueco site. Next to the established ones, a novel analysis method with assumption on horizontal invariance, using multi-angle measurements is shown to unambiguously measure optical depth, as well as absorption and backscatter coefficient.

A. Filipcic; M. Horvat; D. Veberic; D. Zavrtanik; M. Zavrtanik; M. Chiosso; R. Mussa; G. Sequeiros; M. A. Mostafa; M. D. Roberts

2003-05-21T23:59:59.000Z

482

Profiling atmospheric aerosols | Argonne National Laboratory  

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

a number of instruments that use low power lasers (the instrument is called Micropulse Lidar, MPL) to measure the turbidity of the atmosphere above the ground. For the first time,...

483

Reducing the atmospheric impact of wet slaking  

SciTech Connect

Means of reducing the atmospheric emissions due to the wet slaking of coke are considered. One option, investigated here, is to remove residual active silt and organic compounds from the biologically purified wastewater sent for slaking, by coagulation and flocculation.

B.D. Zubitskii; G.V. Ushakov; B.G. Tryasunov; A.G.Ushakov [Kuznetsk Basin State Technical University, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

484

Lookup tables to compute high energy cosmic ray induced atmospheric ionization and changes in atmospheric chemistry  

E-Print Network (OSTI)

A variety of events such as gamma-ray bursts and supernovae may expose the Earth to an increased flux of high-energy cosmic rays, with potentially important effects on the biosphere. Existing atmospheric chemistry software does not have the capability of incorporating the effects of substantial cosmic ray flux above 10 GeV . An atmospheric code, the NASA-Goddard Space Flight Center two-dimensional (latitude, altitude) time-dependent atmospheric model (NGSFC), is used to study atmospheric chemistry changes. Using CORSIKA, we have created tables that can be used to compute high energy cosmic ray (10 GeV - 1 PeV) induced atmospheric ionization and also, with the use of the NGSFC code, can be used to simulate the resulting atmospheric chemistry changes. We discuss the tables, their uses, weaknesses, and strengths.

Dimitra Atri; Adrian L. Melott; Brian C. Thomas

2008-04-20T23:59:59.000Z

485

Quantum light in the turbulent atmosphere  

E-Print Network (OSTI)

Nonclassical properties of light propagating through the turbulent atmosphere are studied. We demonstrate by numerical simulation that the probability distribution of the transmission coefficient, which characterizes the effects of the atmosphere on the quantum state of light, can be reconstructed by homodyne detection. Nonclassical photon-statistics and, more generally, nonclassical Glauber-Sudarshan functions appear to be more robust against turbulence for weak light fields rather than for bright ones.

A. A. Semenov; W. Vogel

2009-02-24T23:59:59.000Z

486

Visible/infrared radiometric calibration station  

Science Conference Proceedings (OSTI)

We have begun construction of a visible/infrared radiometric calibration station that will allow for absolute calibration of optical and IR remote sensing instruments with clear apertures less than 16 inches in diameter in a vacuum environment. The calibration station broadband sources will be calibrated at the National Institute of Standards and Technology (NIST) and allow for traceable absolute radiometric calibration to within {plus_minus}3% in the visible and near IR (0.4--2.5 {mu}m), and less than {plus_minus}1% in the infrared, up to 12 {mu}m. Capabilities for placing diffraction limited images or for sensor full-field flooding will exist. The facility will also include the calibration of polarization and spectral effects, spatial resolution, field of view performance, and wavefront characterization. The configuration of the vacuum calibration station consists of an off-axis 21 inch, f/3.2, parabolic collimator with a scanning fold flat in collimated space. The sources are placed, via mechanisms to be described, at the focal plane of the off-axis parabola. Vacuum system pressure will be in the 10{sup {minus}6} Torr range. The broadband white-light source is a custom design by LANL with guidance from Labsphere Inc. The continuous operating radiance of the integrating sphere will be from 0.0--0.006 W/cm{sup 2}/Sr/{mu}m (upper level quoted for {approximately}500 nm wavelength). The blackbody source is also custom designed at LANL with guidance from NIST. The blackbody temperature will be controllable between 250--350{degrees}K. Both of the above sources have 4.1 inch apertures with estimated radiometric instability at less than 1%. The designs of each of these units will be described. The monochromator and interferometer light sources are outside the vacuum, but all optical relay and beam shaping optics are enclosed within the vacuum calibration station. These sources are described, as well as the methodology for alignment and characterization.

Byrd, D.A.; Maier, W.B. II; Bender, S.C.; Holland, R.F.; Michaud, F.D.; Luettgen, A.L.; Christensen, R.W. [Los Alamos National Lab., NM (United States); O`Brian, T.R. [National Inst. of Standards and Technology (NML), Gaithersburg, MD (United States). Radiometric Physics Div.

1994-07-01T23:59:59.000Z

487

Atmospheric Neutrinos in the MINOS Far Detector  

Science Conference Proceedings (OSTI)

The phenomenon of flavour oscillations of neutrinos created in the atmosphere was first reported by the Super-Kamiokande collaboration in 1998 and since then has been confirmed by Soudan 2 and MACRO. The MINOS Far Detector is the first magnetized neutrino detector able to study atmospheric neutrino oscillations. Although it was designed to detect neutrinos from the NuMI beam, it provides a unique opportunity to measure the oscillation parameters for neutrinos and anti-neutrinos independently. The MINOS Far Detector was completed in August 2003 and since then has collected 2.52 kton-years of atmospheric data. Atmospheric neutrino interactions contained within the volume of the detector are separated from the dominant background from cosmic ray muons. Thirty seven events are selected with an estimated background contamination of less than 10%. Using the detector's magnetic field, 17 neutrino events and 6 anti-neutrino events are identified, 14 events have ambiguous charge. The neutrino oscillation parameters for {nu}{sub {mu}} and {bar {nu}}{sub {mu}} are studied using a maximum likelihood analysis. The measurement does not place constraining limits on the neutrino oscillation parameters due to the limited statistics of the data set analysed. However, this thesis represents the first observation of charge separated atmospheric neutrino interactions. It also details the techniques developed to perform atmospheric neutrino analyses in the MINOS Far Detector.

Howcroft, Caius L.F.; /Cambridge U.

2004-12-01T23:59:59.000Z

488

The Birth and Life of Our Atmosphere  

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

Birth and Life of Our Atmosphere Birth and Life of Our Atmosphere Nature Bulletin No. 554-A February 15, 1975 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation THE BIRTH AND LIFE OF OUR ATMOSPHERE In Bulletin No. 542-A we described the atmosphere that surrounds the earth, held there by the pull of gravity, including the canopy of air immediately above us. That canopy is responsible for our weather and climates, shields us from the killing rays of the sun, and furnishes substances necessary for all life: oxygen, nitrogen, carbon dioxide, and water vapor. Astronomers believe that none of the other planets -- excepting Mars, perhaps -- has an atmosphere anything like ours. The principal elements, free nitrogen (78 percent) and free oxygen (21 percent), apparently are rare in the universe. On the other hand, the earth's atmosphere contains only traces of free hydrogen and helium -- the two lightest gases -- whereas they are by far the most common elements elsewhere in the universe.

489

The Infrared Spectral Energy Distribution of Normal Star-Forming Galaxies: Calibration at Far-Infrared and Submillimeter Wavelengths  

E-Print Network (OSTI)

New far-infrared and submillimeter data are used to solidify and to extend to long wavelengths the empirical calibration of the infrared spectral energy distribution (SED) of normal star-forming galaxies. As was found by Dale et al. (2001), a single parameter family, characterized by f_nu(60 microns)/f_nu(100 microns), is adequate to describe the range of normal galaxy spectral energy distributions observed by IRAS and ISO from 3 to 100 microns. However, predictions based on the first generation models at longer wavelengths (122 to 850 microns) are increasingly overluminous compared to the data for smaller f_nu(60 microns)/f_nu(100 microns), or alternatively, for weaker global interstellar radiation fields. After slightly modifying the far-infrared/submillimeter dust emissivity in those models as a function of the radiation field intensity to better match the long wavelength data, a suite of SEDs from 3 microns to 20 cm in wavelength is presented. Results from relevant applications are also discussed, including submillimeter-based photometric redshift indicators, the infrared energy budget and simple formulae for recovering the bolometric infrared luminosity, and dust mass estimates in galaxies. Regarding the latter, since galaxy infrared SEDs are not well-described by single blackbody curves, the usual methods of estimating dust masses can be grossly inadequate. The improved model presented herein is used to provide a more accurate relation between infrared luminosity and dust mass.

Daniel A. Dale; George Helou

2002-05-06T23:59:59.000Z

490

Probing brain oxygenation with near infrared spectroscopy  

E-Print Network (OSTI)

The fundamentals of near infrared spectroscopy (NIRS) are reviewed. This technique allows to measure the oxygenation of the brain tissue. The particular problems involved in detecting regional brain oxygenation (rSO2) are discussed. The dominant chromophore (light absorber) in tissue is water. Only in the NIR light region of 650-1000 nm, the overall absorption is sufficiently low, and the NIR light can be detected across a thick layer of tissues, among them the skin, the scull and the brain. In this region, there are many absorbing light chromophores, but only three are important as far as the oxygenation is concerned. They are the hemoglobin (HbO2), the deoxy-hemoglobin (Hb) and cytochrome oxidase (CtOx). In the last 20 years there was an enormous growth in the instrumentation and applications of NIRS. . The devices that were used in our experiments were : Somanetics's INVOS Brain Oximeter (IBO) and Toomim's HEG spectrophotometer. The performances of both devices were compared including their merits and draw...

Gersten, Alexander; Raz, Amir; Fried, Robert

2011-01-01T23:59:59.000Z

491

Quantitative infrared analysis of hydrogen fluoride  

SciTech Connect

This work was performed at the Portsmouth Gaseous Diffusion Plant where hydrogen fluoride is produced upon the hydrolysis of UF{sub 6}. This poses a problem for in this setting and a method for determining the mole percent concentration was desired. HF has been considered to be a non-ideal gas for many years. D. F. Smith utilized complex equations in his HF studies in the 1950s. We have evaluated HF behavior as a function of pressure from three different perspectives. (1) Absorbance at 3877 cm{sup -1} as a function of pressure for 100% HF. (2) Absorbance at 3877 cm{sup -1} as a function of increasing partial pressure HF. Total pressure = 300 mm HgA maintained with nitrogen. (3) Absorbance at 3877 cm{sup -1} for constant partial pressure HF. Total pressure is increased to greater than 800 mm HgA with nitrogen. These experiments have shown that at partial pressures up to 35mm HgA, HIF follows the ideal gas law. The absorbance at 3877 cm{sup -1} can be quantitatively analyzed via infrared methods.

Manuta, D.M.

1997-04-01T23:59:59.000Z

492

Infrared Thermographic Study of Laser Ignition  

SciTech Connect

Pyrotechnic ignition has been studied in the past by making a limited number of discrete temperature-time observations during ignition. Present-day infrared scanning techniques make it possible to record thermal profiles, during ignition, with high spacial and temporal resolution. Data thus obtained can be used with existing theory to characterize pyrotechnic materials and to develop more precise kinetic models of the ignition process. Ignition has been studied theoretically and experimentally using various thermal methods. It has been shown that the whole process can, ideally, be divided into two stages. In the first stage, the sample pellet behaves like an inert body heated by an external heat source. The second stage is governed by the chemical reaction in the heated volume produced during the first stage. High speed thermographic recording of the temperature distribution in the test sample during laser ignition makes it possible to calculate the heat content at any instant. Thus, one can actually observe laser heating and the onset of self-sustained combustion in the pellet. The experimental apparatus used to make these observations is described. The temperature distributions recorded are shown to be in good agreement with those predicted by heat transfer theory. Heat content values calculated from the observed temperature distributions are used to calculate thermal and kinetic parameters for several samples. These values are found to be in reasonable agreement with theory.

Mohler, Jonathan H.; Chow, Charles T. S.

1986-07-01T23:59:59.000Z

493

Geothermal Exploration in Eastern California Using Aster Thermal Infrared  

Open Energy Info (EERE)

in Eastern California Using Aster Thermal Infrared in Eastern California Using Aster Thermal Infrared Data Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geothermal Exploration in Eastern California Using Aster Thermal Infrared Data Abstract Remote sensing is a cost-effective tool that can be used to cover large areas for the purpose of geothermal exploration. A particular application is the use of satellite thermal infrared (TIR) imagery from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument aboard an orbiting satellite. It can be used to search remotely for elevated surface temperatures, which may be associated with geothermal resources. The study region is in the central part of eastern California, with emphasis on the Coso geothermal field. Nighttime scenes are most

494

The Multi-Channel Infrared Sea Truth Radiometric Calibrator (MISTRC)  

Science Conference Proceedings (OSTI)

A new multichannel infrared sea truth radiometer has been designed and built to improve validation of satellite-determined sea surface temperature. Horizontal grid polarized filters installed on the shortwave channels are very effective in ...

M. J. Suarez; W. J. Emery; G. A. Wick

1997-04-01T23:59:59.000Z

495

Cirrus Infrared Parameters and Shortwave Reflectance Relations from Observations  

Science Conference Proceedings (OSTI)

A summary of experimental observations and analysis of cirrus from high-altitude aircraft remote sensing is presented. The vertical distribution of cirrus optical and infrared cross-section parameters and the relative effective emittance and ...

James D. Spinhirne; William D. Hart; Dennis L. Hlavka

1996-05-01T23:59:59.000Z

496

Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal...  

Open Energy Info (EERE)

Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal Region, New Zealand - M A Mongillo, Geothermics, 23(5-6), 1994, Pp 511-526 Jump to: navigation, search...

497

Infrared Thermal Imagery of Cloud Base in Tornadic Supercells  

Science Conference Proceedings (OSTI)

During the spring seasons of 2003 and 2004, an infrared thermal camera was deployed in and around supercell thunderstorms in an attempt to retrieve the temperature at the cloud base of a mesocyclone prior to tornadogenesis. The motivation for ...

Robin L. Tanamachi; Howard B. Bluestein; Stephen S. Moore; Robert P. Madding

2006-11-01T23:59:59.000Z

498

Estimating Tropical Cyclone Intensity from Infrared Image Data  

Science Conference Proceedings (OSTI)

This paper describes results from a near-real-time objective technique for estimating the intensity of tropical cyclones from satellite infrared imagery in the North Atlantic Ocean basin. The technique quantifies the level of organization or ...

Miguel F. Pińeros; Elizabeth A. Ritchie; J. Scott Tyo

2011-10-01T23:59:59.000Z

499

Real-time scene simulator for thermal infrared localization  

Science Conference Proceedings (OSTI)

Exploiting the natural thermal infrared radiation of humans is a promising approach for an accurate, comfortable and inexpensive indoor localization system. However, different sources of disturbance make the development challenging. In order to provide ...

Daniel Hauschildt; Jürgen Kemper; Nicolaj Kirchhof; Benedict Juretko; Holger Linde

2010-12-01T23:59:59.000Z

500

Infrared Thermography (IRT) Anomalies Manual (Revision 1 - 2001)  

Science Conference Proceedings (OSTI)

This manual provides both an overview of the basic concepts of infrared thermography (IRT) technology and an examination of applications of the technology for equipment used to produce and deliver electric power.

2001-12-14T23:59:59.000Z