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1

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

2

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.

3

Meteorological Applications of Temperature and Water Vapor Retrievals from the Ground-Based Atmospheric Emitted Radiance Interferometer (AERI)  

Science Conference Proceedings (OSTI)

The Atmospheric Emitted Radiance Interferometer (AERI) is a well-calibrated ground-based instrument that measures high-resolution atmospheric emitted radiances from the atmosphere. The spectral resolution of the instrument is better than one ...

Wayne F. Feltz; William L. Smith; Robert O. Knuteson; Henry E. Revercomb; Harold M. Woolf; H. Ben Howell

1998-09-01T23:59:59.000Z

4

Near-Continuous Profiling of Temperature, Moisture, and Atmospheric Stability Using the Atmospheric Emitted Radiance Interferometer (AERI)  

Science Conference Proceedings (OSTI)

The Department of Energy Atmospheric Radiation Measurement Program (ARM) has funded the development and installation of five ground-based atmospheric emitted radiance interferometer (AERI) systems at the Southern Great Plains (SGP) site. The ...

W. F. Feltz; W. L. Smith; H. B. Howell; R. O. Knuteson; H. Woolf; H. E. Revercomb

2003-05-01T23:59:59.000Z

5

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

6

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 DOEÆs 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.

7

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

8

Time series analysis of AERI radiances for GCM testing and improvement  

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

Time series analysis of AERI radiances for GCM testing and improvement Time series analysis of AERI radiances for GCM testing and improvement Dykema, John Harvard University Leroy, Stephen Harvard University Anderson, James Harvard University Tobin, David University of Wisconsin-Madison Knuteson, Robert University Of Wisconsin Revercomb, Henry University of Wisconsin-Madison Category: Radiation High resolution infrared radiances measured by the Atmospheric Emitted Radiance Interferometer (AERI) contained detailed information about the structure and dynamics of temperature, water vapor, and clouds below 3 km. Infrared radiances also contain the signature of radiative forcing by well-mixed gases that constitutes the greenhouse effect. Direct comparison of these radiance observations to similar radiances calculated from output

9

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

10

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

11

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

12

Improvement of AERI T/q Retrievals and Their Validation at Anmyeon-Do, South Korea  

Science Conference Proceedings (OSTI)

An Atmospheric Emitted Radiance Interferometer (AERI), which measures downwelling radiances, has been in operation at Anmyeon-do, South Korea, since June 2010. Temperature and moisture (T/q) profiles with high temporal and vertical resolution can ...

Shin-Hoo Kang; Tae-Young Goo; Mi-Lim Ou

2013-07-01T23:59:59.000Z

13

The Status and Future of AERIs in ARM  

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

Status and Future of AERIs Status and Future of AERIs in ARM Dave Turner Space Science and Engineering Center University of Wisconsin - Madison Longwave/Microwave Focus Group 11 March 2008 ARM STM, Norfolk, VA Background * Spectrally resolved IR radiances were considered key component of ARM's observational strategy * Stringent requirements placed on absolute radiometric accuracy (1% ambient radiance), spectral accuracy, noise level, and operability * Instrument development was successful! * ARM has 8 AERI systems: * 11 Million calibrated sky spectra have been collected by ARM AERIs (up to Dec 2007) * SGP-01 * SGP-E14 * AMF-M1 * NSA-C1 (ER) * TWP-C2 * TWP-C3 * Spare (NR) * Spare (ER) AERI Interferometer Assembly AERI Interferometer Assembly Bomem Interferometer ABB HBB Optics Optics Bench Bench Shock

14

ARM - Datastreams - aeri01summary  

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

summary summary Documentation Data Quality Plots Citation DOI: 10.5439/1025141 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AERI01SUMMARY Atmospheric Emitted Radiance Interferometer (AERI) 01: summary data Active Dates 1995.07.22 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Ambient blackbody temperature - apex K ABBapexTemp ( time ) Ambient blackbody temperature K ABBbottomTemp ( time ) Ambient blackbody temperature - rim top K ABBtopTemp ( time )

15

Posters Atmospheric Emitted Radiance Interferometer: Status and Water Vapor Continuum Results  

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

9 9 Posters Atmospheric Emitted Radiance Interferometer: Status and Water Vapor Continuum Results H. E. Revercomb, R. O. Knuteson, W. L. Smith, F. A. Best, and R. G. Dedecker University of Wisconsin Madison, Wisconsin H. B. Howell National Oceanic and Atmospheric Administration Systems Design and Applications Branch Madison, Wisconsin Introduction Accurate and spectrally detailed observations of the thermal emission from radiatively important atmospheric gases, aerosols, and clouds are now being provided to the Atmospheric Radiation Measurement (ARM) data base by the Atmospheric Emitted Radiance Interferometer (AERI) prototype at the Southern Great Plains Cloud and Radiation Testbed (CART) site. Spectra over the range from 520 to 3000 cm -1 (3 to 19 microns) with a resolution of 0.5 cm

16

Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA  

Science Conference Proceedings (OSTI)

A new technique for ascertaining the thermodynamic cloud phase from high-spectral-resolution ground-based infrared measurements made by the Atmospheric Emitted Radiance Interferometer (AERI) is presented. This technique takes advantage of the ...

D. D. Turner; S. A. Ackerman; B. A. Baum; H. E. Revercomb; P. Yang

2003-06-01T23:59:59.000Z

17

Rapid Scan AERI Observations: Benefits and Analysis  

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

Rapid Scan AERI Observations: Benefits and Analysis Rapid Scan AERI Observations: Benefits and Analysis W. F. Feltz, D. D. Turner, R. O. Knuteson, and R. G. Dedecker Space Science and Engineering Center Cooperative Institute of Mesoscale Meteorological Studies University of Wisconsin-Madison Madison, Wisconsin D. D. Turner Pacific Northwest National Laboratory Richland, Washington Introduction The U.S. Department of Energy's (DOE's) Atmospheric Radiation Measurement (ARM) Program has funded the development of the atmospheric emitted radiance interferometer (AERI). This has led to a hardened, autonomous system that measures downwelling infrared (IR) radiance at high-spectral resolution. Seven AERI systems have been deployed around the world as part of the ARM Program. The initial goal of these instruments was to characterize the clear-sky IR emission from the atmosphere,

18

ARM - Publications: Science Team Meeting Documents: AERI Thermodynamic  

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

AERI Thermodynamic Profiling VAP Improvements and Status AERI Thermodynamic Profiling VAP Improvements and Status Feltz, Wayne University of Wisconsin Howell, Ben University of Wisconsin-Madison Turner, David Pacific Northwest National Laboratory Mahon, Rick Pacific Northwest National Laboratory Knuteson, Robert University Of Wisconsin The Atmospheric Emitted Radiance Interferometer (AERI) was one of the primary instruments developed under the DOE ARM instrument development program (IDP) to be deployed to the Climate Research Facility (CRF) Southern Great Plains (SGP) central site near Lamont, Oklahoma. A prototype AERI was deployed in March 1993 where it collected data until the first AERI operational instrument replaced it in July 1999. The ARM archive contains AERI data from the ARM CART SGP central facility site from January

19

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

20

ARM - VAP Product - aeri01prof3feltz  

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

Productsaeriprofaeri01prof3feltz Productsaeriprofaeri01prof3feltz Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027271 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : AERI01PROF3FELTZ Profiles of temperature and water vapor physically retrieved from the AERI spectra Active Dates 2002.04.18 - 2014.01.06 Originating VAP Process AERI Profiles of Water Vapor and Temperature : AERIPROF Description The primary purpose of the "aeriprof3feltz" value-added product (VAP) is to retrieve high temporal resolution temperature (T) and water vapor (q) profiles from Atmospheric Emitted Radiance Interferometer (AERI) observations. Traditionally, temperature and moisture profiles are measured

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


21

ARM - Measurement - Longwave spectral radiance  

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

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

22

Using a Neural Network to Determine the Hatch Status of the AERI at the ARM North Slope of Alaska Site  

SciTech Connect

The fore-optics of the Atmospheric Emitted Radiance Interferometer (AERI) are protected by an automated hatch to prevent precipitation from fouling the instrument's scene mirror (Knuteson et al. 2004). Limit switches connected with the hatch controller provide a signal of the hatch state: open, closed, undetermined (typically associated with the hatch being between fully open or fully closed during the instrument's sky view period), or an error condition. The instrument then records the state of the hatch with the radiance data so that samples taken when the hatch is not open can be removed from any subsequent analysis. However, the hatch controller suffered a multi-year failure for the AERI located at the ARM North Slope of Alaska (NSA) Central Facility in Barrow, Alaska, from July 2006-February 2008. The failure resulted in misreporting the state of the hatch in the 'hatchOpen' field within the AERI data files. With this error there is no simple solution to translate what was reported back to the correct hatch status, thereby making it difficult for an analysis to determine when the AERI was actually viewing the sky. As only the data collected when the hatch is fully open are scientifically useful, an algorithm was developed to determine whether the hatch was open or closed based on spectral radiance data from the AERI. Determining if the hatch is open or closed in a scene with low clouds is non-trivial, as low opaque clouds may look very similar spectrally as the closed hatch. This algorithm used a backpropagation neural network; these types of neural networks have been used with increasing frequency in atmospheric science applications.

Zwink, AB; Turner, DD

2012-03-19T23:59:59.000Z

23

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

SciTech Connect

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

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

2001-06-04T23:59:59.000Z

24

ARM - PI Product - NSA AERI Hatch Correction Data Set  

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

ProductsNSA AERI Hatch Correction Data Set Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : NSA AERI Hatch Correction...

25

ARM - PI Product - Raman lidar/AERI PBL Height Product  

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

ProductsRaman lidarAERI PBL Height Product Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Raman lidarAERI PBL...

26

Tropospheric and Lower Stratospheric Ozone Profiles From AERI-X Emission Spectra  

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

Tropospheric and Lower Stratospheric Ozone Profiles Tropospheric and Lower Stratospheric Ozone Profiles From AERI-X Emission Spectra P. F. Fogal and F. J. Murcray Department of Physics and Astronomy University of Denver Denver, Colorado Introduction The University of Denver Atmospheric Emission Radiometric Interferometer-Extended (AERI-X) has been in regular operation at the Southern Great Plains (SGP) Atmospheric Radiation Measurements (ARM) Program site, conditions permitting, since the mid-1990s. We present here the analysis of several spectra from May 10, 1999, and demonstrate the ability to retrieve the tropospheric ozone profile at the ARM site. While the presence of ozone in the stratosphere is of vital importance for several reasons, in the troposphere, ozone is a pollutant and a powerful oxidizer. For these reasons, it is

27

ARM - Publications: Science Team Meeting Documents: New AERI...  

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

Deployments and the Status of AERI Engineering Changes Dedecker, Ralph University of Wisconsin Knuteson, Robert University Of Wisconsin Revercomb, Henry University Of...

28

ARM - Field Campaign - AERI-ER Intercomparison IOP  

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

govCampaignsAERI-ER Intercomparison IOP govCampaignsAERI-ER Intercomparison IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : AERI-ER Intercomparison IOP 2004.01.12 - 2006.06.29 Lead Scientist : David Turner Data Availability Data were collected and submitted to the ARM Archive for IOPs. For data sets, see below. Summary There were three, potentially four, phases to this experiment. The length of time required for each phase was the time needed to ensure at least one severe clear period, which occur relatively frequently in January and February on the North Slope. The phases were: 1) Run the two systems side-by-side in their nominal modes to ensure that the calibration is reproducible. 2) Adjust the set-point of the hot blackbody on the second system from 60

29

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

Science Conference Proceedings (OSTI)

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

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

2004-11-01T23:59:59.000Z

30

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

31

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

32

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

33

radiance | OpenEI  

Open Energy Info (EERE)

radiance radiance Dataset Summary Description Freedom Field is a not-for-profit organization formed to facilitate development and commercialization of renewable energy solutions. The organization has installed a variety of renewable energy generating technologies at their facility (located at Rock River Water Reclamation in Rockford, IL), with the intention of serving as a demonstration facility. The facility monitors data (at 5-minute intervals) from a weather station, 12.4 kW of PV panels (56 220-watt panels), a 10kW wind turbine (HAWT), a 1.2 kW wind turbine (VAWT), an absorption cooling system, and biogas burners. Source Freedom Field Date Released July 19th, 2011 (3 years ago) Date Updated Unknown Keywords biogas monitoring data PV radiance solar temperature

34

Underwater Radiance Distributions Measured with Miniaturized Multispectral Radiance Cameras  

Science Conference Proceedings (OSTI)

Miniaturized radiance cameras measuring underwater multispectral radiances in all directions at high-radiometric accuracy (CE600) are presented. The camera design is described, as well as the main steps of its optical and radiometric ...

David Antoine; André Morel; Edouard Leymarie; Amel Houyou; Bernard Gentili; Stéphane Victori; Jean-Pierre Buis; Nicolas Buis; Sylvain Meunier; Marius Canini; Didier Crozel; Bertrand Fougnie; Patrice Henry

2013-01-01T23:59:59.000Z

35

The underwater radiance distribution problem  

E-Print Network (OSTI)

THE UNDERWATER RADIANCE DISTRIBUTION PROBLEM S. Q. DuntleyFunction of Depth in an Underwater Environment," which firsta Function of Depth in an Underwater Environment," which has

Duntley, Seibert Q

1959-01-01T23:59:59.000Z

36

X:\ARM_19~1\P245-258.WPD  

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

Atmospheric Emitted Radiance Interferometer (AERI): Atmospheric Emitted Radiance Interferometer (AERI): Status and the Aerosol Explanation for Extra Window Region Emissions H. E. Revercomb, R. O. Knuteson, F. A. Best, T. P. Dirkx, R. G. Dedecker, R. Garcia, B. A. Whitney, and W. L. Smith University of Wisconsin Madison, Wisconsin H. B. Howell NOAA Systems Design and Applications Branch Boulder, Colorado Introduction High spectral resolution observations of downwelling emission from 3 to l9 microns have been made by the Atmospheric Emitted Radiance Interferometer (AERI) Prototype at the Southern Great Plains (SGP) Cloud and Radiative Testbed (CART) site for over two years. The spectral data set from AERI provides a basis for improving clear sky radiative transfer; determining the radiative impact of clouds, including the derivation of cloud

37

ARM - Datastreams - aerich1  

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

Datastreamsaerich1 Datastreamsaerich1 Documentation Data Quality Plots Citation DOI: 10.5439/1025143 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AERICH1 Atmospheric Emitted Radiance Interferometer (AERI): channel 1 data Active Dates 1994.01.10 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable AERI instrument unit serial number unitless AERI_unit_number AERI instrument unit serial number unitless AERIunitNumber ( time ) Observation Altitude m Altitude ( time )

38

Radiance Covariance and Climate Models  

Science Conference Proceedings (OSTI)

Spectral empirical orthogonal functions (EOFs) derived from the covariance of satellite radiance spectra may be interpreted in terms of the vertical distribution of the covariance of temperature, water vapor, and clouds. This has been done for ...

Robert Haskins; Richard Goody; Luke Chen

1999-05-01T23:59:59.000Z

39

Validation of ERBS Scanner Radiances  

Science Conference Proceedings (OSTI)

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

Richard N. Green; Lee M. Avis

1996-08-01T23:59:59.000Z

40

Section 23  

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

3 3 Atmospheric Emitted Radiance Interferometer Temperature and Water Vapor Retrievals: Southern Great Plains Cloud and Radiation Testbed Seasonal Statistical Analysis, Monthly Climatic Means for Model Integration, and Future GOES/AERI Retrievals W. F. Feltz, W. L. Smith, R. O. Knuteson, H. E. Revercomb, H. Woolf H. B. Howell and S. Ho Cooperative Institute for Meteorological Satellite Studies Space Science and Engineering Center, University of Wisconsin-Madison Madison, Wisconsin Introduction The Atmospheric Emitted Radiance Interferometer (AERI) (Revercomb et al. 1993) is providing radiances to routinely produce temperature and water vapor retrievals in the first three kilometers of the Earth's atmosphere at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP)

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Radiance: Synthetic Imaging System | Open Energy Information  

Open Energy Info (EERE)

Radiance: Synthetic Imaging System Radiance: Synthetic Imaging System Jump to: navigation, search Tool Summary Name: RADIANCE Agency/Company /Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Buildings Resource Type: Software/modeling tools User Interface: Desktop Application Website: radsite.lbl.gov/radiance/ Cost: Free References: Radiance[1] Logo: RADIANCE RADIANCE is a highly accurate ray-tracing software system for UNIX computers that is licensed at no cost in source form. Radiance was developed with primary support from the U.S. Department Of Energy and additional support from the Swiss Federal Government. Radiance is a suite of programs for the analysis and visualization of lighting in design. Input files specify the scene geometry, materials, luminaires,time, date

42

ARM - Measurement - Shortwave narrowband radiance  

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

narrowband radiance narrowband radiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave narrowband radiance A measure of the intrinsic radiant energy flux intensity, at wavelengths between 0.4 and 4 {mu}, emitted by a radiator in a given direction, expressed in units of energy per unit time per unit solid angle. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CSPHOT : Cimel Sunphotometer SWS : Shortwave Spectroradiometer

43

Radiance Solar | Open Energy Information  

Open Energy Info (EERE)

Radiance Solar Radiance Solar Jump to: navigation, search Name Radiance Solar Place Atlanta, Georgia Zip 30318 Product Commercial and residential PV installer based in Atlanta. Coordinates 33.748315°, -84.391109° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.748315,"lon":-84.391109,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

44

Microsoft Word - knuteson-ro.doc  

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

10 Years of AERI Data from the DOE ARM 10 Years of AERI Data from the DOE ARM Southern Great Plains Site R. O. Knuteson, F. A. Best, R. G. Dedecker, W. F. Feltz, H. E. Revercomb, and D. C. Tobin University of Wisconsin-Madison Space Science and Engineering Center Madison, Wisconsin Introduction As of January 2004, the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) data archive contained a 10 year record of downwelling infrared (IR) spectral emission measurements at the surface from the atmospheric emitted radiance interferometer (AERI) instrument. The authors have generated a monthly "climatology" of AERI spectral radiances for the 120 months from January 1994 through December 2003 for the DOE ARM Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) central facility (CF) in North Central Oklahoma. This AERI climatology

45

Section 22  

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

Atmospheric Emitted Radiance Interferometer Status Atmospheric Emitted Radiance Interferometer Status and Quality Measurement Experiment Results R. O. Knuteson, F. A. Best, H. E. Revercomb and B. A. Whitney Space Science and Engineering Center University of Wisconsin - Madison Madison, Wisconsin Instrument Status The atmospheric emitted radiance interferometer (AERI) central facility instrument at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site has been operational since July 1995. This instrument, identified by the serial number AERI-01, is the first of a series of operational instruments designed and built at the University of Wisconsin Space Science and Engineering Center for the Department of Energy (DOE) ARM program under contract to Pacific Northwest National Laboratory. The AERI-01

46

ARM - Datastreams - aerich2  

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

Datastreamsaerich2 Datastreamsaerich2 Documentation Data Quality Plots Citation DOI: 10.5439/1025144 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AERICH2 Atmospheric Emitted Radiance Interferometer (AERI): channel 2 data Active Dates 1994.01.10 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable AERI instrument unit serial number unitless AERIunitNumber ( time ) Observation Altitude m Altitude ( time ) Temperature of the AERI blackbody support structure K BBsupportStructureTemp ( time )

47

Building Energy Software Tools Directory: Radiance  

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

Radiance Radiance Radiance logo. Advanced lighting simulation and rendering package; calculates spectral radiance values (illuminance & color) and spectral irradiance (illuminance & color) for interior and exterior spaces considering electric lighting, daylight and interreflection. Used by architects and designers to predict illumination, visual quality and appearance of design spaces. Used by researchers to evaluate new lighting and daylighting technologies and study visual comfort and similar quantities related to the visual environment. Keywords lighting, daylighting, rendering Validation/Testing N/A Expertise Required High level of computer literacy required; 4 days training, minimum. Users Over 200. Audience Daylighting, lighting, and architectural designers.

48

NIST Lunar spectral irradiance and radiance (LUSI)  

Science Conference Proceedings (OSTI)

... However, a spectrally resolved model that allows trending at the 0.1 % level ... of the lunar irradiance and radiance at reflected solar wavelengths. ...

2013-04-11T23:59:59.000Z

49

Global illumination with radiance regression functions  

Science Conference Proceedings (OSTI)

We present radiance regression functions for fast rendering of global illumination in scenes with dynamic local light sources. A radiance regression function (RRF) represents a non-linear mapping from local and contextual attributes of surface points, ... Keywords: global illumination, neural network, non-linear regression, real time rendering

Peiran Ren; Jiaping Wang; Minmin Gong; Stephen Lin; Xin Tong; Baining Guo

2013-07-01T23:59:59.000Z

50

ARM - Publications: Science Team Meeting Documents  

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

Evidence for Aerosol Effects on AERI Clear-Sky Radiance at the SGP Evidence for Aerosol Effects on AERI Clear-Sky Radiance at the SGP Ma, Y., and Ellingson, R.G., University of Maryland Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting The Atmospheric Emitted Radiance Interferometer (AERI) Line-by-Line Radiative Transfer Model (LBLRTM) Quality Measurement Experiment (QME) 10-micron window residuals have been examined relative to the Multifilter Rotating Shadowband Radiometer (MFRSR) 0.87-micron optical depth for clear-sky periods during 1997-98. The analysis shows an increasing aerosol influence on the downwelling radiance with aerosol optical depth for columnar water totals below about 3 cm. Above 3 cm, the residuals become negatively correlated with both aerosol optical depth and precipitable water. This change in the characteristics suggests that the current LBLRTM

51

Fizeau plasma interferometer  

SciTech Connect

This paper describes a technique by which the sensitivity of plasma interferometers can be increased. Stabilization and fractional fringe measurement techniques have improved to the point where additional optical sensitivity could be useful. (MOW)

Frank, A.M.

1980-01-01T23:59:59.000Z

52

Dual surface interferometer  

DOE Patents (OSTI)

A double-pass interferometer is provided which allows direct measurement of relative displacement between opposed surfaces. A conventional plane mirror interferometer may be modified by replacing the beam-measuring path cube-corner reflector with an additional quarterwave plate. The beam path is altered to extend to an opposed plane mirrored surface and the reflected beam is placed in interference with a retained reference beam split from dual-beam source and retroreflected by a reference cube-corner reflector mounted stationary with the interferometer housing. This permits direct measurement of opposed mirror surfaces by laser interferometry while doubling the resolution as with a conventional double-pass plane mirror laser interferometer system.

Pardue, R.M.; Williams, R.R.

1980-09-12T23:59:59.000Z

53

Dual surface interferometer  

DOE Patents (OSTI)

A double-pass interferometer is provided which allows direct measurement of relative displacement between opposed surfaces. A conventional plane mirror interferometer may be modified by replacing the beam-measuring path cube-corner reflector with an additional quarter-wave plate. The beam path is altered to extend to an opposed plane mirrored surface and the reflected beam is placed in interference with a retained reference beam split from dual-beam source and retroreflected by a reference cube-corner reflector mounted stationary with the interferometer housing. This permits direct measurement of opposed mirror surfaces by laser interferometry while doubling the resolution as with a conventional double-pass plane mirror laser interferometer system.

Pardue, Robert M. (Knoxville, TN); Williams, Richard R. (Oak Ridge, TN)

1982-01-01T23:59:59.000Z

54

Update of Radiance Calibrations for ISCCP  

Science Conference Proceedings (OSTI)

Since July 1983 ISCCP has collected, normalized, and calibrated radiance data (visible and thermal infrared) from the imaging radiometers on the National Oceanic and Atmospheric Administration polar orbiters and from the geostationary satellites ...

Christopher L. Brest; William B. Rossow; Miriam D. Roiter

1997-10-01T23:59:59.000Z

55

Diagnosing Convective Instability from GOES-8 Radiances  

Science Conference Proceedings (OSTI)

Statistical algorithms are developed to diagnose the vertical change in equivalent potential temperature (??e) between 920 and 620 hPa from GOES-8 radiance data. The models are prepared using a training dataset of radiosonde releases from 10 ...

P. Anil Rao; Henry E. Fuelberg

1997-04-01T23:59:59.000Z

56

Infrared Radiance Modeling by Optimal Spectral Sampling  

Science Conference Proceedings (OSTI)

This paper describes a rapid and accurate technique for the numerical modeling of band transmittances and radiances in media with nonhomogeneous thermodynamic properties (i.e., temperature and pressure), containing a mixture of absorbing gases ...

Jean-Luc Moncet; Gennady Uymin; Alan E. Lipton; Hilary E. Snell

2008-12-01T23:59:59.000Z

57

Microsoft Word - best-fa.doc  

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

Catastrophic Failures and a Robust Fix of the Atmospheric Catastrophic Failures and a Robust Fix of the Atmospheric Emitted Radiance Interferometer (AERI) Detector Dewars F. A. Best, D. P. Adler,N. N. Ciganovich, R. G. Dedecker, R. O. Knuteson, and H. E. Revercomb University of Wisconsin - Madison Madison, Wisconsin Introduction The Atmospheric Emitted Radiance Interferometer (AERI) is a ground-based infrared spectroradiometer that was developed at the University of Wisconsin Space Science and Engineering Center (SSEC) for the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) program to measure the downwelling infrared emission from CO 2 , H 2 O, and clouds. Nine continuously operating AERIs are deployed throughout the world, including Lamont, Oklahoma; Barrow, Alaska; Madison, Wisconsin;

58

A Parameterization of Broadband Conversion Factors for METEOSAT Visible Radiances  

Science Conference Proceedings (OSTI)

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

J. Stum; B. Pinty; D. Ramond

1985-12-01T23:59:59.000Z

59

Evaluation of a New Operational Technique for Producing Clear Radiances  

Science Conference Proceedings (OSTI)

To produce atmospheric temperature profiles from measurements of infrared data, it is necessary to obtain infrared radiances for clear areas. Clear radiances are obtained either by identifying spots that are completely clear or by extracting ...

L. M. McMillin; C. Dean

1982-07-01T23:59:59.000Z

60

Angular Distributions of Downward Longwave Radiance and Their Meteorological Applications  

Science Conference Proceedings (OSTI)

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

Charles A. Coombes; Anthony W. Harrison

1986-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Interferometers as Holographic Clocks  

E-Print Network (OSTI)

A new fundamental limit is postulated on measurement of time in holographic theories where light sheets carry degrees of freedom that saturate the entropy limit of black hole event horizons. Holographic clock operators are associated with null displacements and spatial orientations. Null fields preserve clock phase along their propagation direction, and clock phase is invariant on null sheets, but time measurements in different directions do not commute. This hypothesis is shown to lead to spatially coherent holographic noise in relative phases of null fields propagating in different directions. Current technology allows Michelson interferometers to achieve the Planck-scale holographic noise limit in differential phase measurements. Cross-correlations of holographic phase noise between interferometers are calculated, depending on their separation and alignment.

Hogan, Craig J

2010-01-01T23:59:59.000Z

62

Microphysical Properties of Single and Mixed-Phase Arctic Clouds Derived from AERI Observations  

SciTech Connect

A novel new approach to retrieve cloud microphysical properties from mixed-phase clouds is presented. This algorithm retrieves cloud optical depth, ice fraction, and the effective size of the water and ice particles from ground-based, high-resolution infrared radiance observations. The theoretical basis is that the absorption coefficient of ice is stronger than that of liquid water from 10-13 mm, whereas liquid water is more absorbing than ice from 16-25 um. However, due to strong absorption in the rotational water vapor absorption band, the 16-25 um spectral region becomes opaque for significant water vapor burdens (i.e., for precipitable water vapor amounts over approximately 1 cm). The Arctic is characterized by its dry and cold atmosphere, as well as a preponderance of mixed-phase clouds, and thus this approach is applicable to Arctic clouds. Since this approach uses infrared observations, cloud properties are retrieved at night and during the long polar wintertime period. The analysis of the cloud properties retrieved during a 7 month period during the Surface Heat Budget of the Arctic (SHEBA) experiment demonstrates many interesting features. These results show a dependence of the optical depth on cloud phase, differences in the mode radius of the water droplets in liquid-only and mid-phase clouds, a lack of temperature dependence in the ice fraction for temperatures above 240 K, seasonal trends in the optical depth with the clouds being thinner in winter and becoming more optically thick in the late spring, and a seasonal trend in the effective size of the water droplets in liquid-only and mixed-phase clouds that is most likely related to aerosol concentration.

Turner, David D.

2003-06-01T23:59:59.000Z

63

Holographic Noise in Interferometers  

E-Print Network (OSTI)

Arguments based on general principles of quantum mechanics suggest that a minimum length or time associated with Planck-scale unification may entail a new kind of observable uncertainty in the transverse position of macroscopically separated bodies. Transverse positions vary randomly about classical geodesics in space and time by about the geometric mean of the Planck scale and separation, on a timescale corresponding to their separation. An effective theory based on a Planck information flux limit, and normalized by the black hole entropy formula, is developed to predict measurable correlations, such as the statistical properties of noise in interferometer signals. A connection with holographic unification is illustrated by representing Matrix theory position operators with a Schr\\"odinger wave equation, interpreted as a paraxial wave equation with a Planck frequency carrier. Solutions of this equation are used to derive formulas for the spectrum of beamsplitter position fluctuations and equivalent strain noise in a Michelson interferometer, determined by the Planck time, with no other parameters. The spectral amplitude of equivalent strain derived here is a factor of \\sqrt{\\pi} smaller than previously published estimates. Signals in two nearly-collocated interferometers are predicted to be highly correlated, a feature that may provide convincing evidence for or against this interpretation of holography.

Craig J. Hogan

2009-05-29T23:59:59.000Z

64

Research Highlight  

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

Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Properties Journal Reference: Turner, D.D., S.A. Ackerman, B.A. Baum, H.E. Revercomb, and P. Yang, 2003: "Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA," Journal of Applied Meteorology 42(6):701-715. The SHEBA experiment in Barrow, Alaska used data collected by the ground-based radiation observations from the Atmospheric Emitted Radiance Interferometer (AERI). (Photo Credit: SHEBA Project Office) Key Contributors: S.A. Ackerman, B.A. Baum, H.E. Revercomb, P. Yang, In the frigid environs of the Acrtic, ARM scientists at the North Slope of

65

1  

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

ARM AERI with Trent FTS Spectra for the ARM AERI with Trent FTS Spectra for the Measurement of Greenhouse Radiative Fluxes W. F. J. Evans and E. Puckrin Trent University Peterborough, Ontario T. P. Ackerman Pacific Northwest National Laboratory Richland, Washington Introduction For the past several years, measurements of the atmospheric thermal infrared spectra have been made at the mid-latitude site of Trent University in Peterborough, Ontario, at a high resolution of 0.25 cm -1 . These measurements are similar to those conducted with the Atmospheric Emitted Radiance Interferometer (AERI) instrument at the Atmospheric Radiation Measurement (ARM) Program sites, which has a lower resolution of 1 cm -1 . We compare the ARM AERI spectra with those measured at Trent University for clear-sky conditions, and use the same analysis techniques on both spectra to derive

66

Knuteson-RO  

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

AERIs for ARM: Accuracy and Applications AERIs for ARM: Accuracy and Applications R. O. Knuteson, F. A. Best, R. G. Dedecker, D. H. DeSlover, T. P. Dirkx, W. F. Feltz, R. K. Garcia, H. B. Howell, H. E. Revercomb, and D. C. Tobin University of Wisconsin - Madison Cooperative Institute for Meteorological Satellite Studies Madison, Wisconsin Introduction Measurements from the atmospheric emitted radiance interferometer (AERI) are used within the Atmospheric Radiation Measurement (ARM) Program to improve our understanding of the atmospheric processes important for atmospheric radiation. One of the earliest ARM goals was the collection of high spectral resolution emission data for validation of radiative transfer model (RTM) calculations in the infrared (IR). Over the years, the list of applications of AERI data have grown to include remote

67

Section 11  

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

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

68

shippert-98.pdf  

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

87 87 Spectral Cloud Emissivities from LBLRTM/AERI QME T. R. Shippert Pacific Northwest National Laboratory Richland, Washington S. A. Clough and P. D. Brown Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts W. L. Smith NASA-Langley Research Center Hampton, Virginia R. O. Knuteson and S. A. Ackerman University of Wisconsin Madison, Wisconsin Introduction Using spectral radiance measurements from the atmospheric emitted radiance interferometer (AERI) and calculations from the Line-by-Line Radiative Transfer Model (LBLRTM), cloud emissivities can be derived in the window region from 700 cm -1 to 1250 cm -1 . The AERI/LBLRTM Quality Measurement Experiment (QME) (Brown 1998) is currently designed to run under clear-sky conditions; the LBLRTM does not calculate the effects of

69

Holographic Noise in Interferometers  

E-Print Network (OSTI)

General arguments based on black hole physics suggest the possibility of a new kind of indeterminacy in the relative position of bodies in spacetime, corresponding to the diffraction limit of Planck wavelength radiation. Suitably designed instruments should display a new phenomenon, a randomly varying shear in relative position, with a flat power spectral density at low frequencies given approximately by the Planck time, and with no other parameters. An effective theory is presented to connect fundamental theory with macroscopic phenomena, such as the statistical properties of noise in signals of interferometers. A theory of spacetime wavefunctions based on the paraxial wave equation with a carrier wave at the Planck frequency, or equivalently a Schrodinger wave equation, is motivated by a particular interpretation of Matrix theory in the macroscopic limit. A model based on gaussian-beam solutions of this equation is used to derive formulas in the time and frequency domain for autocorrelation of beamsplitter ...

Hogan, Craig J

2009-01-01T23:59:59.000Z

70

The Fizeau Interferometer Testbed  

E-Print Network (OSTI)

The Fizeau Interferometer Testbed (FIT) is a collaborative effort between NASA's Goddard Space Flight Center, the Naval Research Laboratory, Sigma Space Corporation, and the University of Maryland. The testbed will be used to explore the principles of and the requirements for the full, as well as the pathfinder, Stellar Imager mission concept. It has a long term goal of demonstrating closed-loop control of a sparse array of numerous articulated mirrors to keep optical beams in phase and optimize interferometric synthesis imaging. In this paper we present the optical and data acquisition system design of the testbed, and discuss the wavefront sensing and control algorithms to be used. Currently we have completed the initial design and hardware procurement for the FIT. The assembly and testing of the Testbed will be underway at Goddard's Instrument Development Lab in the coming months.

Xiaolei Zhang; Kenneth G. Carpenter; Richard G. Lyon; Hubert Huet; Joe Marzouk; Gregory Solyar

2002-12-19T23:59:59.000Z

71

Acceleration of Radiance for Lighting Simulation by using Parallel...  

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

Conference Location Sydney, Australia Abstract This study attempted to accelerate annual daylighting simulations for fenestration systems in Radiance ray-tracing program. The...

72

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

Science Conference Proceedings (OSTI)

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

Xianglei Huang; Norman G. Loeb; Huiwen Chuang

2012-03-01T23:59:59.000Z

73

feltz-99.PDF  

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

+ GOES Retrievals at the SGP ARM Site: SCM Data + GOES Retrievals at the SGP ARM Site: SCM Data Assimilation and Convective Forecasting Utility W. F. Feltz, R. O. Knuteson, H. E. Revercomb, and H. B. Howell University of Wisconsin-Madison Cooperative Institute for Meteorological Satellite Studies Madison, Wisconsin Introduction Four additional Atmospheric Emitted Radiance Interferometer (AERI) systems have been deployed at the U.S. Department of Energy's (DOE's) Atmospheric Radiation Measurement (ARM) Southern Great Plains Cloud And Radiation Testbed (SGP CART) site boundary facilities. The AERI + GOES (Geostationary Operational Environmental Satellite) temperature and water vapor retrieval product is now operational at Pacific Northwest National Laboratory (PNNL) allowing continuous monitoring of

74

Compact portable diffraction moire interferometer  

DOE Patents (OSTI)

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observation means including film and video cameras may be used to view and record the resultant fringe patterns.

Deason, Vance A. (Shelley, ID); Ward, Michael B. (Idaho Falls, ID)

1989-01-01T23:59:59.000Z

75

Compact portable diffraction moire interferometer  

DOE Patents (OSTI)

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observations means including film and video cameras may be used to view and record the resultant fringe patterns. 7 figs.

Deason, V.A.; Ward, M.B.

1988-05-23T23:59:59.000Z

76

Surface profiling interferometer  

DOE Patents (OSTI)

The design of a long-trace surface profiler for the non-contact measurement of surface profile, slope error and curvature on cylindrical synchrotron radiation (SR) mirrors. The optical system is based upon the concept of a pencil-beam interferometer with an inherent large depth-of-field. The key feature of the optical system is the zero-path-difference beam splitter, which separates the laser beam into two colinear, variable-separation probe beams. A linear array detector is used to record the interference fringe in the image, and analysis of the fringe location as a function of scan position allows one to reconstruct the surface profile. The optical head is mounted on an air bearing slide with the capability to measure long aspheric optics, typical of those encountered in SR applications. A novel feature of the optical system is the use of a transverse "outrigger" beam which provides information on the relative alignment of the scan axis to the cylinder optic symmetry axis.

Takacs, Peter Z. (P.O. Box 385, Upton, NY 11973); Qian, Shi-Nan (Hefei Synchrotron Radiation Laboratory, University of Science and, Hefei, Anhui, CN)

1989-01-01T23:59:59.000Z

77

Very high radiance edge-emitting LED  

SciTech Connect

A new light-emitting diode (LED) whose radiance is 1000 W/cm/sup 2/sr, an order of magnitude higher than any previous LED, is described. The LED is an (AlGa)As double-heterojunction edge-emitting structure. This structure acts as a waveguide for the internally generated light, and with appropriate Al concentration difference at the heterojunctions (..delta..x approximately equal to 0.3) and active region width (approximately 500 A), the radiation pattern perpendicular to the junction can be less than 30/sup 0/ (FWHM). For fiber-optic communications this LED is capable of coupling 850 ..mu..w, at a coupling loss of only -10 dB into a 0.14-numerical-aperture (NA), 90-..mu..m-diam low-loss fiber. The LED is capable of being directly modulated at 250 MHz and has a spectral width of less than 300 A.

Ettenberg, M.; Kressel, H.; Wittke, J.P.

1976-06-01T23:59:59.000Z

78

Absolute spectral radiance responsivity calibration of sun photometers  

SciTech Connect

Sun photometers are designed to measure direct solar irradiance and diffused sky radiance for the purpose of atmospheric parameters characterization. A sun photometer is usually calibrated by using a lamp-illuminated integrating sphere source for its band-averaged radiance responsivity, which normally has an uncertainty of 3%-5% at present. Considering the calibration coefficients may also change with time, a regular high precision calibration is important to maintain data quality. In this paper, a tunable-laser-based facility for spectral radiance responsivity calibration has been developed at the Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences. A reference standard radiance radiometer, calibrated against cryogenic radiometer, is used to determine the radiance from a laser-illuminated integrating sphere source. Spectral radiance responsivity of CIMEL CE318-2 sun photometer is calibrated using this new calibration system with a combined standard uncertainty of about 0.8%. As a validation, the derived band-averaged radiance responsivity are compared to that from a Goddard Space Flight Center lamp-based sphere calibration and good agreements (difference <1.4%) are found from 675 to 1020 nm bands.

Xu Qiuyun; Zheng Xiaobing; Zhang Wei; Wang Xianhua; Li Jianjun; Li Xin [Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei 230031 (China); Li Zhengqiang [Laboratoire d'Optique Atmospherique, Universite Lille 1, Villeneuve d'Ascq 59655 (France) and State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101 (China)

2010-03-15T23:59:59.000Z

79

ARM - Datastreams - aeriengineer  

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

Datastreamsaeriengineer Datastreamsaeriengineer Documentation Data Quality Plots Citation DOI: 10.5439/1025145 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AERIENGINEER Atmospheric Emitted Radiance Interferometer (AERI): engineering data Active Dates 1997.10.21 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Ambient blackbody temperature - apex K ABBapexTemp ( time ) Ambient Blackbody apex temperature weight /1 ABBapexTempWeight ( time ) Ambient blackbody temperature K ABBbottomTemp ( time )

80

Vision Office Products  

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

1.1 1.1 The History of the University of Wisconsin Atmospheric Emitted Radiance Interferometer (AERI) Prototype During the Period April 1994 Through July 1995 June 1999 (Manuscript received November 1995, in final form December 1995) R. Knuteson B. Whitney H. Revercomb F. Best Prepared by the Space Science and Engineering Center, University of Wisconsin - Madison Work supported by the U.S. Department of Energy, Office of Energy Research, Office of Health and Environmental Research Knuteson et al., June 1999, ARM TR-001.1 iii Abstract This document describes reprocessing of data collected with the University of Wisconsin (UW) Atmospheric Emitted Radiance Interferometer (AERI) prototype at the U.S. Department of Energy

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

ARM - Instrument - aeri  

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ARIES Observatory, Nainital, Uttarkhand, India PVC M1 Browse Data Highland Center, Cape Cod MA; AMF 1 PYE M1 Browse Data Point Reyes, CA Contact(s) Jonathan Gero 608-265-2335...

82

Vertical Covariance Localization for Satellite Radiances in Ensemble Kalman Filters  

Science Conference Proceedings (OSTI)

A widely used observation space covariance localization method is shown to adversely affect satellite radiance assimilation in ensemble Kalman filters (EnKFs) when compared to model space covariance localization. The two principal problems are ...

William F. Campbell; Craig H. Bishop; Daniel Hodyss

2010-01-01T23:59:59.000Z

83

Global, Seasonal Surface Variations from Satellite Radiance Measurements  

Science Conference Proceedings (OSTI)

Global, daily, visible, and infrared radiance measurements from the NOAA-5 Scanning Radiometer (SR) are analyzed for the months of January, April, July, and October 1977 to infer surface radiative properties A radiative transfer model that ...

William B. Rossow; Christopher L. Brest; Leonid C. Garder

1989-03-01T23:59:59.000Z

84

Determination of Moisture From NOAA Polar Orbiting Satellite Sounding Radiances  

Science Conference Proceedings (OSTI)

A method is presented for deducing lower troposphere moisture fields from radiances measured by the operational polar orbiting NOAA satellites. Statistical evaluation of the technique demonstrates the viability of the approach. A case study with ...

Christopher M. Hayden; William L. Smith; Harold M. Woolf

1981-04-01T23:59:59.000Z

85

Establishing the Moon as a Spectral Radiance Standard  

Science Conference Proceedings (OSTI)

A new automated observatory dedicated to the radiometry of the moon has been constructed to provide new radiance information for calibration of earth-orbiting imaging instruments, particularly Earth Observing System instruments. Instrumentation ...

Hugh H. Kieffer; Robert L. Wildey

1996-04-01T23:59:59.000Z

86

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

87

Determination of Total Ozone Amount from TIROS Radiance Measurements  

Science Conference Proceedings (OSTI)

Total ozone amounts are determined from atmospheric radiances measured by the TIROS Operational Vertical Sounder (TOVS). The retrieval procedure is one of linear regression where total ozone amounts derived from Dobson spectrophotometer ...

Walter G. Planet; David S. Crosby; James H. Lienesch; Michael L. Hill

1984-02-01T23:59:59.000Z

88

Acceleration of the matrix multiplication of Radiance three phase  

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Acceleration of the matrix multiplication of Radiance three phase Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer Title Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer Publication Type Journal Article LBNL Report Number LBNL-6461E Year of Publication 2013 Authors Zuo, Wangda, Andrew McNeil, Michael Wetter, and Eleanor S. Lee Journal Journal of Building Performance Simulation Keywords daylighting simulation, graphics processing unit, multicore central processing unit, OpenCL, parallel computing Abstract Building designers are increasingly relying on complex fenestration systems to reduce energy consumed for lighting and HVAC in low energy buildings. Radiance, a lighting simulation program, has been used to conduct daylighting simulations for complex fenestration systems. Depending on the configurations, the simulation can take hours or even days using a personal computer. This paper describes how to accelerate the matrix multiplication portion of a Radiance three-phase daylight simulation by conducting parallel computing on heterogeneous hardware of a personal computer. The algorithm was optimized and the computational part was implemented in parallel using OpenCL. The speed of new approach was evaluated using various daylighting simulation cases on a multicore central processing unit and a graphics processing unit. Based on the measurements and analysis of the time usage for the Radiance daylighting simulation, further speedups can be achieved by using fast I/O devices and storing the data in a binary format.

89

Interferometer for the measurement of plasma density  

SciTech Connect

An interferometer which combines the advantages of a coupled cavity interferometer requiring alignment of only one light beam, and a quadrature interferometer which has the ability to track multi-fringe phase excursions unambiguously. The device utilizes a Bragg cell for generating a signal which is electronically analyzed to unambiguously determine phase modulation which is proportional to the path integral of the plasma density.

Jacobson, Abram R. (Los Alamos, NM)

1980-01-01T23:59:59.000Z

90

Comparing the Vertical Structures of Weighting Functions and Adjoint Sensitivity of Radiance and Verifying Mesoscale Forecasts Using AIRS Radiance Observations  

Science Conference Proceedings (OSTI)

An adjoint sensitivity analysis is conducted using the adjoint of the hyperspectral radiative transfer model (RTM) that simulates the radiance spectrum from the Advanced Infrared Sounder (AIRS). It is shown, both theoretically and numerically, ...

Matthew J. Carrier; Xiaolei Zou; William M. Lapenta

2008-04-01T23:59:59.000Z

91

ARM - Publications: Science Team Meeting Documents  

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AERI-Lidar Retrievals of Ice Cloud Physical Properties, Including the First AERI-Lidar Retrievals of Ice Cloud Physical Properties, Including the First Estimates of Photon Tunneling Contributions to Absorption Mitchell, D.L.(a) and DeSlover, D.H.(b), Desert Research Institute (a), Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin (b) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting The Atmospheric Emitted Radiance Interferometer (AERI) and the High Spectral Resolution Lidar (HSRL) have been used to determine the spectral dependence of alpha in the window region (8.5-12.5 micron wavelength), where alpha is the ratio of optical depth at a visible wavelength to infrared absorption optical depth for a cirrus cloud. Using alpha and cloud emissivity measurements, it is generally possible to retrieve effective

92

Solar Stray Light Effects in Meteosat Radiances Observed and Quantified Using Operational Data Monitoring at ECMWF  

Science Conference Proceedings (OSTI)

Radiances in the water vapor (WV) and infrared channels of the Meteorological Satellite (Meteosat)-5 and -7 are being continuously monitored in the form of clear-sky radiances using the operational European Centre for Medium-Range Weather ...

Christina Köpken

2004-01-01T23:59:59.000Z

93

An All-Weather Observational Operator for Radiance Data Assimilation with Mesoscale Forecast Models  

Science Conference Proceedings (OSTI)

Assimilating satellite radiance data under all weather conditions remains an outstanding problem in numerical weather prediction. This study develops an observational operator for use in radiance assimilation under both clear and cloudy ...

Thomas J. Greenwald; Rolf Hertenstein; Tomislava Vuki?evi?

2002-07-01T23:59:59.000Z

94

Determination of Unfiltered Radiances from the Clouds and the Earth’s Radiant Energy System Instrument  

Science Conference Proceedings (OSTI)

A new method for determining unfiltered shortwave (SW), longwave (LW), and window radiances from filtered radiances measured by the Clouds and the Earth’s Radiant Energy System (CERES) satellite instrument is presented. The method uses ...

Norman G. Loeb; Kory J. Priestley; David P. Kratz; Erika B. Geier; Richard N. Green; Bruce A. Wielicki; Patricia O’Rawe Hinton; Sandra K. Nolan

2001-04-01T23:59:59.000Z

95

Radiometric and Geometric Calibration of a Visible Spectral Electro-Optic “Fisheye” Camera Radiance Distribution System  

Science Conference Proceedings (OSTI)

Camera systems which measure a complete hemispherical field (“fisheye” lens systems), can be applied to the measurement of the radiance, but accurate radiometric and geometric calibrations are required to obtain absolute radiance data. The ...

Kenneth J. Voss; Giuseppe Zibordi

1989-08-01T23:59:59.000Z

96

A multipulsed dynamic moire interferometer  

DOE Patents (OSTI)

An improved dynamic moire interferometer is described that is comprised of a lasing medium providing a plurality of beams of coherent light, a multiple q-switch producing multiple trains of 100,000 or more pulses per second, a combining means collimating multiple trains of pulses into substantially a single train and directing beams to specimen gratings affixed to a test material, and a controller, triggering and sequencing the emission of the pulses with the occurrence and recording of a dynamic loading event. 5 figs.

Deason, V.A.

1989-06-10T23:59:59.000Z

97

knuteson-99.PDF  

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Observations at the ARM SGP, NSA, Observations at the ARM SGP, NSA, and TWP CART Sites R. O. Knuteson, H. E. Revercomb, F. A. Best, R. G. Dedecker, R. G. Garcia, H. B. Howell, D. C. Tobin, and V. P. Walden Space Science and Engineering Center University of Wisconsin Madison, Wisconsin Introduction A total of eight Atmospheric Emitted Radiance Interferometer (AERI) systems, developed at the University of Wisconsin-Madison Space Science and Engineering Center (UW-SSEC) for the measurement of the downwelling infrared radiance spectrum, have now been deployed at the Atmospheric Radiation Measurement (ARM) Program's Southern Great Plains (SGP), Tropical Western Pacific (TWP), and North Slope of Alaska (NSA) Cloud And Radiation Testbed (CART) sites (Revercomb 1993). In this paper we will review the status and recent results obtained from these AERI

98

Interferometer Techniques for Gravitational-Wave Detection  

E-Print Network (OSTI)

Several km-scale gravitational-wave detectors have been constructed world wide. These instruments combine a number of advanced technologies to push the limits of precision length measurement. The core devices are laser interferometers of a new kind; developed from the classical Michelson topology these interferometers integrate additional optical elements, which significantly change the properties of the optical system. Much of the design and analysis of these laser interferometers can be performed using well-known classical optical techniques, however, the complex optical layouts provide a new challenge. In this review we give a textbook-style introduction to the optical science required for the understanding of modern gravitational wave detectors, as well as other high-precision laser interferometers. In addition, we provide a number of examples for a freely available interferometer simulation software and encourage the reader to use these examples to gain hands-on experience with the discussed optical methods.

Andreas Freise; Kenneth Strain

2009-09-21T23:59:59.000Z

99

CIMEL Measurements of Zenith Radiances at the ARM SGP Site  

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CIMEL Measurements of Zenith Radiances CIMEL Measurements of Zenith Radiances at the ARM SGP Site W. J. Wiscombe National Aeronautics and Space Administration Goddard Space Flight Center Climate and Radiation Branch Greenbelt, Maryland A. Marshak and K. Evans Joint Center for Earth Systems Technology University of Maryland Baltimore, Maryland Y. Knyazikhin Department of Geography Boston University Boston, Massachusetts H. W. Barker Environment Canada Downsview, Ontario, Canada C. F. Pavloski Department of Meteorology Pennsylvania State University University Park, Pennsylvania A. B. Davis Los Alamos National Laboratory Space and Remote Sensing Sciences Los Alamos, New Mexico M. Miller Brookhaven National Laboratory Upton, New York Introduction The objective of our study is to exploit the sharp spectral contrast in vegetated surface reflectance across

100

ARM - Field Campaign - Absolute Solar Transmittance Interferometer...  

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

govCampaignsAbsolute Solar Transmittance Interferometer (ASTI) Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Absolute...

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

turner-98.pdf  

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3 3 Long-Term Analyses of Observed and Line-by-Line Calculations of Longwave Surface Spectral Radiance and the Effect of Scaling the Water Vapor Profile D. D. Turner and T. R. Shippert Pacific Northwest National Laboratory Richland, Washington P. D. Brown and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts R. O. Knuteson and H. E. Revercomb University of Wisconsin Madison, Wisconsin W. L. Smith NASA-Langley Research Center Hampton, Virginia Abstract A Quality Measurement Experiment (QME) comparing longwave radiance at the surface observed by the atmospheric emitted radiance interferometer (AERI) instru- ment with calculated radiance from the line-by-line radiative transfer model (LBLRTM) has generated almost 4 years of data and statistics. These statistics have been used to assess

102

Furnace control apparatus using polarizing interferometer  

DOE Patents (OSTI)

A system for non-destructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading.

Schultz, Thomas J. (Maumee, OH); Kotidis, Petros A. (Waban, MA); Woodroffe, Jaime A. (North Reading, MA); Rostler, Peter S. (Newton, MA)

1995-01-01T23:59:59.000Z

103

Process control system using polarizing interferometer  

DOE Patents (OSTI)

A system for nondestructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading. 38 figures.

Schultz, T.J.; Kotidis, P.A.; Woodroffe, J.A.; Rostler, P.S.

1994-02-15T23:59:59.000Z

104

Furnace control apparatus using polarizing interferometer  

DOE Patents (OSTI)

A system for nondestructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading. 38 figures.

Schultz, T.J.; Kotidis, P.A.; Woodroffe, J.A.; Rostler, P.S.

1995-03-28T23:59:59.000Z

105

Process control system using polarizing interferometer  

DOE Patents (OSTI)

A system for non-destructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading.

Schultz, Thomas J. (Maumee, OH); Kotidis, Petros A. (Waban, MA); Woodroffe, Jaime A. (North Reading, MA); Rostler, Peter S. (Newton, MA)

1994-01-01T23:59:59.000Z

106

GPU-based Calculation for Scattering Characteristics of Complex Targets from Background Radiance in Infrared Spectrum  

Science Conference Proceedings (OSTI)

Scattering characteristic of complex targets from sky and ground background radiance plays an important role in engineering fields. Firstly, a 5-parameter BRDF (Bidirectional Reflectance Distributional Function) model is introduced. Then MODTRAN is used ... Keywords: scattering characteristic, background radiance, BRDF, GPU, CUDA, optimization

Xing Guo, Zhensen Wu, Longxiang Linghu, Yufeng Yang, Yunhua Cao, Jiaji Wu

2012-12-01T23:59:59.000Z

107

Evaluation of a Strategy for the Assimilation of Satellite Radiance Observations with the Local Ensemble Transform Kalman Filter  

Science Conference Proceedings (OSTI)

This paper evaluates a strategy for the assimilation of satellite radiance observations with the local ensemble transform Kalman filter (LETKF) data assimilation scheme. The assimilation strategy includes a mechanism to select the radiance ...

José A. Aravéquia; Istvan Szunyogh; Elana J. Fertig; Eugenia Kalnay; David Kuhl; Eric J. Kostelich

2011-06-01T23:59:59.000Z

108

Adaptive DFT-based interferometer fringe tracking  

Science Conference Proceedings (OSTI)

An automatic interferometer fringe tracking system has been developed, implemented, and tested at the Infrared Optical Telescope Array (IOTA) Observatory at Mount Hopkins, Arizona. The system can minimize the optical path differences (OPDs) for all three ... Keywords: DFT, IOTA, fringe tracking, interferometry, real time

Edward Wilson; Ettore Pedretti; Jesse Bregman; Robert W. Mah; Wesley A. Traub

2005-01-01T23:59:59.000Z

109

Precomputed local radiance transfer for real-time lighting design  

E-Print Network (OSTI)

This paper introduces a new method for real-time relighting of scenes illuminated by local light sources. We extend previous work on precomputed radiance transfer for distant lighting to local lighting by introducing the concept of unstructured light clouds. The unstructured light cloud enables a compact representation of local lights in the model and real-time rendering of complex models with full global illumination due to local light sources. We use simplification of lights, and clustered PCA to obtain a compressed representation. When storing only the indirect component of the illumination, we are able to get high quality with only 8– 16 lighting coefficients per vertex. Our results demonstrate real-time rendering of scenes with moving lights, dynamic cameras, glossy materials and global illumination.

Anders Wang Kristensen

2005-01-01T23:59:59.000Z

110

fogal-99  

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

Temperature and Water Vapor Profile Retrievals from Temperature and Water Vapor Profile Retrievals from AERI-X High Spectral Resolution Emission Spectra P. F. Fogal, F. J. Murcray, and R. Blatherwick Department of Physics and Astronomy University of Denver Denver, Colorado Introduction The University of Denver Atmospheric Emission Radiance Interferometer-Extended (AERI-X) produces calibrated 0.1 cm -1 resolution spectra of the downwelling infrared emission of the atmosphere. These spectra are used to retrieve temperature and water vapor profiles for the lower part of the atmosphere with the optimal estimation spectral fitting routine known as SEASCRAPE (Sequential Evaluation Algorithm for Simultaneous and Concurrent Retrieval of Atmospheric Parameter Estimates). SEASCRAPE Details SEASCRAPE was originally developed at the National Aeronautics and Space Administration's

111

deslover-99.PDF  

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

Cloud Optical Depth Retrieval Cloud Optical Depth Retrieval From MPL-Measured Cloud Boundaries D. H. DeSlover University of Wisconsin-Madison Cooperative Institute for Meteorological Satellite Studies Madison, Wisconsin W. L. Smith National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction The ability to derive cloud microphysical properties from Atmospheric Emitted Radiance Interferometer (AERI) data has improved with the recent addition of cloud boundaries that are determined from the Cloud and Radiation Testbed (CART) Micropulse Lidar (MPL) measurements. A series of 18 microwindows were chosen to measure cloud emission within the infrared atmospheric window (8 micron to 12 micron) from the AERI data. These spectral regions represent the least contaminated

112

Super-radiance in the sodium resonance lines from sodium iodide arc lamps  

Science Conference Proceedings (OSTI)

Super-radiance observed within the centers of the sodium resonance D lines emitted by arc lamps containing sodium iodide as additive in a high-pressure mercury plasma environment was studied by high-resolution emission spectroscopy. The spectral radiance of these self-reversed lines including super-radiance was simulated by considering a local enhancement of the source function due to the presence of an additional source of radiation near the arc wall. Causes of this hitherto unrecognized source of radiation are given.

Karabourniotis, D. [Department of Physics, Institute of Plasma Physics, University of Crete, 71003 Heraklion (Greece); Drakakis, E. [Department of Electrical Engineering, Technological Educational Institute, Heraklion (Greece)

2010-08-09T23:59:59.000Z

113

Phase-shifting point diffraction interferometer  

DOE Patents (OSTI)

Disclosed is a point diffraction interferometer for evaluating the quality of a test optic. In operation, the point diffraction interferometer includes a source of radiation, the test optic, a beam divider, a reference wave pinhole located at an image plane downstream from the test optic, and a detector for detecting an interference pattern produced between a reference wave emitted by the pinhole and a test wave emitted from the test optic. The beam divider produces separate reference and test beams which focus at different laterally separated positions on the image plane. The reference wave pinhole is placed at a region of high intensity (e.g., the focal point) for the reference beam. This allows reference wave to be produced at a relatively high intensity. Also, the beam divider may include elements for phase shifting one or both of the reference and test beams.

Medecki, Hector (Berkeley, CA)

1998-01-01T23:59:59.000Z

114

Phase-shifting point diffraction interferometer  

DOE Patents (OSTI)

Disclosed is a point diffraction interferometer for evaluating the quality of a test optic. In operation, the point diffraction interferometer includes a source of radiation, the test optic, a beam divider, a reference wave pinhole located at an image plane downstream from the test optic, and a detector for detecting an interference pattern produced between a reference wave emitted by the pinhole and a test wave emitted from the test optic. The beam divider produces separate reference and test beams which focus at different laterally separated positions on the image plane. The reference wave pinhole is placed at a region of high intensity (e.g., the focal point) for the reference beam. This allows reference wave to be produced at a relatively high intensity. Also, the beam divider may include elements for phase shifting one or both of the reference and test beams. 8 figs.

Medecki, H.

1998-11-10T23:59:59.000Z

115

Interferometers as Probes of Planckian Quantum Geometry  

E-Print Network (OSTI)

A theory of position of massive bodies is proposed that results in an observable quantum behavior of geometry at the Planck scale, $t_P$. Departures from classical world lines in flat spacetime are described by Planckian noncommuting operators for position in different directions, as defined by interactions with null waves. The resulting evolution of position wavefunctions in two dimensions displays a new kind of directionally-coherent quantum noise of transverse position. The amplitude of the effect in physical units is predicted with no parameters, by equating the number of degrees of freedom of position wavefunctions on a 2D spacelike surface with the entropy density of a black hole event horizon of the same area. In a region of size $L$, the effect resembles spatially and directionally coherent random transverse shear deformations on timescale $\\approx L/c$ with typical amplitude $\\approx \\sqrt{ct_PL}$. This quantum-geometrical "holographic noise" in position is not describable as fluctuations of a quantized metric, or as any kind of fluctuation, dispersion or propagation effect in quantum fields. In a Michelson interferometer the effect appears as noise that resembles a random Planckian walk of the beamsplitter for durations up to the light crossing time. Signal spectra and correlation functions in interferometers are derived, and predicted to be comparable with the sensitivities of current and planned experiments. It is proposed that nearly co-located Michelson interferometers of laboratory scale, cross-correlated at high frequency, can test the Planckian noise prediction with current technology.

Craig J. Hogan

2010-02-25T23:59:59.000Z

116

ARM - Site Instruments  

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

Central FacilityInstruments Central FacilityInstruments SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts Instruments : Central Facility [ Single installation ] ACSM Aerosol Chemical Speciation Monitor Aerosols Browse Data [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Plots Browse Data [ Single installation ] BRS Broadband Radiometer Station Radiometric Browse Plots Browse Data [ Single installation ] BSRN Baseline Solar Radiation Network

117

ARM - Instrument Location Table  

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

govInstrumentsLocation Table govInstrumentsLocation Table Instruments Location Table Contacts Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument Locations Site abbreviations explained in the key. Instrument Name Abbreviation NSA SGP TWP AMF C1 C2 EF BF CF EF IF C1 C2 C3 EF IF Aerosol Chemical Speciation Monitor ACSM Atmospheric Emitted Radiance Interferometer AERI Aethalometer AETH Ameriflux Measurement Component AMC Aerosol Observing System AOS Meteorological Measurements associated with the Aerosol Observing System AOSMET Broadband Radiometer Station BRS

118

ARM - Site Instruments  

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

Darwin SiteInstruments Darwin SiteInstruments TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Central Facility, Darwin, Australia [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] CSPHOT Cimel Sunphotometer Aerosols, Radiometric Browse Data [ Single installation ] DISDROMETER Impact Disdrometer Surface Meteorology Browse Plots Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Browse Data [ Single installation ] GNDRAD Ground Radiometers on Stand for Upwelling Radiation Radiometric Browse Plots

119

ARM - Site Instruments  

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

PlainsInstruments PlainsInstruments SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts Instruments : Southern Great Plains [ Single installation ] ACSM Aerosol Chemical Speciation Monitor Aerosols Browse Data [ Installed at 5 facilities ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Plots Browse Data [ Single installation ] BRS Broadband Radiometer Station Radiometric Browse Plots Browse Data [ Single installation ] BSRN Baseline Solar Radiation Network

120

ACARS Aerodynamic (Research Incorporated) Communication and Recording System  

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

ix ix Acrononyms and Abbreviations Acronyms and Abbreviations ACARS Aerodynamic (Research Incorporated) Communication and Recording System ACSYS Arctic Climate System Study AER Atmospheric Environmental Research, Inc. AERI Atmospheric Emitted Radiance Interferometer AFOSR Air Force Office of Scientific Research AGARD Advisory Group for Aerospace Research and Development ALFA AER Local Forecast and Assimilation (model) AMIP Atmospheric Model Intercomparison Project ARCS Atmosphere Radiation and Cloud Stations ARCSS Arctic System Science (NSF) ARCSYM Arctic Regional Climate System Model ARINC Aerodynamic Research Incorporated Communication ARM Atmospheric Radiation Measurement program AS anvil stratus ASTER Atmosphere-Surface Turbulent Exchange Research ASTEX Altantic Stratocumulus Transition EXperiment

Note: This page contains sample records for the topic "radiance interferometer aeri" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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121

ARM - Site Instruments  

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

PacificInstruments PacificInstruments TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Tropical Western Pacific [ Installed at 3 facilities ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Installed at 2 facilities ] CSAPR C-Band ARM Precipitation Radar Cloud Properties Browse Data [ Installed at 3 facilities ] CSPHOT Cimel Sunphotometer Aerosols, Radiometric Browse Data [ Single installation ] DISDROMETER Impact Disdrometer Surface Meteorology Browse Plots Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Browse Data [ Installed at 3 facilities ]

122

ARM - Site Instruments  

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

Point Reyes National Seashore, Point Reyes National Seashore, CaliforniaInstruments Point Reyes Deployment AMF Home Point Reyes Home Data Plots and Baseline Instruments Experiment Planning MASRAD Proposal Abstract and Related Campaigns Outreach Posters Climate Research at Point Reyes National Seashore (horizontal) Climate Research at Point Reyes National Seashore (vertical) News Campaign Images Instruments : Point Reyes CA, USA [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Data [ Single installation ] CCN Cloud Condensation Nuclei Particle Counter Aerosols Browse Data [ Single installation ] ECOR Eddy Correlation Flux Measurement System Surface/Subsurface Properties Browse Plots

123

ARM - Site Instruments  

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

Oliktok Point, Oliktok Point, AlaskaInstruments Oliktok Deployment AMF Home Oliktok Home Deployment Operations Baseline Instruments and Data Plots at the Archive Outreach News & Press New Sites Fact Sheet (PDF, 1.6MB) Images Contacts Fred Helsel, AMF Operations Lynne Roeder, Media Contact Hans Verlinde, Principal Investigator Instruments : Oliktok Point, Alaska [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Not Online [ Single installation ] CSAPR C-Band ARM Precipitation Radar Cloud Properties Not Online [ Single installation ] CSPHOT Cimel Sunphotometer Aerosols Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Not Online [ Single installation ] ECOR Eddy Correlation Flux Measurement System Surface/Subsurface Properties Not Online [ Single installation ]

124

1  

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

Instrument Cross-Comparisons and Automated Quality Instrument Cross-Comparisons and Automated Quality Control of Atmospheric Radiation Measurement Data S. Moore and G. Hughes ATK Mission Research Santa Barbara, California Introduction Within the Atmospheric Radiation Measurement (ARM) instrument network, several different systems often measure the same quantity at the same site. For example, several ARM instruments measure time- series profiles of the atmosphere that were previously available only from balloon-borne radiosonde systems. These instruments include the Radar Wind Profilers (RWP) with Radio-Acoustic Sounding Systems (RASS), the Atmospheric Emitted Radiance Interferometer (AERI), the Microwave Radiometer Profiler (MWRP), and the Raman Lidar (RL). ARM researchers have described methods for direct

125

Evaluating Global Aerosol Models and Aerosol and Water Vapor Properties Near Clouds  

Science Conference Proceedings (OSTI)

Project goals: (1) Use the routine surface and airborne measurements at the ARM SGP site, and the routine surface measurements at the NSA site, to continue our evaluations of model aerosol simulations; (2) Determine the degree to which the Raman lidar measurements of water vapor and aerosol scattering and extinction can be used to remotely characterize the aerosol humidification factor; (3) Use the high temporal resolution CARL data to examine how aerosol properties vary near clouds; and (4) Use the high temporal resolution CARL and Atmospheric Emitted Radiance Interferometer (AERI) data to quantify entrainment in optically thin continental cumulus clouds.

Richard A. Ferrare; David D. Turner

2011-09-01T23:59:59.000Z

126

ARM - Site Instruments  

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

AlaskaInstruments AlaskaInstruments NSA Related Links Facilities and Instruments Barrow Atqasuk ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Images Information for Guest Scientists Contacts Instruments : North Slope Alaska [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AMC Ameriflux Measurement Component Radiometric, Surface/Subsurface Properties Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Data [ Single installation ] CCN Cloud Condensation Nuclei Particle Counter Aerosols Browse Data [ Single installation ] CLAP Continuous Light Absorption Photometer Aerosols Browse Data [ Single installation ] CPC Condensation Particle Counter Aerosols Browse Data

127

Section 18  

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

1 1 Atmospheric Emitted Radiance Interferometer Temperature and Water Vapor Retrievals: Improvements Using an Integrated Profile Retrieval Approach W. Feltz, W. L. Smith, R. O. Knuteson, and B. Howell University of Wisconsin-Madison Madison, Wisconsin Introduction A major focus of the U. S. Department of Energy (DOE) Atmospheric Radiation Measurement Program (ARM) is to best characterize the thermodynamic state of the atmosphere using a suite of in situ and remote sensing instrumentation. The goal is to take advantage of each property measured by the instruments to provide a clear picture of atmospheric state. An Atmospheric Emitted Radiance Interferometer (AERI) has now been operating nearly continuously since December 1993, obtaining high-resolution infrared atmospheric spectra.

128

Section 26  

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

5 5 Atmospheric Radiation Measurement Science Applications of Atmospheric Emitted Radiance Interferometer Measurements W. L. Smith, S. A. Ackerman, D. H. DeSlover, W. F. Feltz, S. Ho, R. O. Knuteson and H. E. Revercomb Cooperative Institute for Meteorological Satellite Studies Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin S. A. Clough Atmospheric Environmental Research, Inc. Cambridge, Massachusetts Atmospheric Emitted Radiance Interferometer (AERI) data systems may not be available (e.g., the boundary sites of the are being used to study meteorological processes in the Southern Great Plains [SGP] CART). This technique Planetary Boundary Layer (PBL), the quasi-continuous sound associates temperature and water vapor structure in an

129

Radiance: Science and Stagecraft Come Together via Alan Alda and Marie  

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

Radiance: Science and Stagecraft Come Together via Alan Alda and Radiance: Science and Stagecraft Come Together via Alan Alda and Marie Curie Radiance: Science and Stagecraft Come Together via Alan Alda and Marie Curie May 27, 2011 - 1:30pm Addthis Alan Alda | Photo Courtesy of www.alanalda.com Alan Alda | Photo Courtesy of www.alanalda.com Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science They might appear to have little in common. She received two Nobel Prizes. He won six Emmys. She was born in Poland and made her name in Paris. He was born in New York City, and made his fame in Hollywood. Despite their differences, Marie Curie and Alan Alda will be coming together on opening night of the upcoming World Science Festival, through a special reading of his first play, Radiance: The Passion of Marie Curie.

130

Radiance: Science and Stagecraft Come Together via Alan Alda and Marie  

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

Radiance: Science and Stagecraft Come Together via Alan Alda and Radiance: Science and Stagecraft Come Together via Alan Alda and Marie Curie Radiance: Science and Stagecraft Come Together via Alan Alda and Marie Curie May 27, 2011 - 1:30pm Addthis Alan Alda | Photo Courtesy of www.alanalda.com Alan Alda | Photo Courtesy of www.alanalda.com Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science They might appear to have little in common. She received two Nobel Prizes. He won six Emmys. She was born in Poland and made her name in Paris. He was born in New York City, and made his fame in Hollywood. Despite their differences, Marie Curie and Alan Alda will be coming together on opening night of the upcoming World Science Festival, through a special reading of his first play, Radiance: The Passion of Marie Curie.

131

Interchannel Error Correlation Associated with AIRS Radiance Observations: Inference and Impact in Data Assimilation  

Science Conference Proceedings (OSTI)

The interchannel observation error correlation (IOEC) associated with radiance observations is currently assumed to be zero in meteorological data assimilation systems. This assumption may lead to suboptimal analyses. Here, the IOEC is inferred ...

Louis Garand; Sylvain Heilliette; Mark Buehner

2007-06-01T23:59:59.000Z

132

Normalization and Calibration of Geostationary Satellite Radiances for the international Satellite Cloud Climatology Project  

Science Conference Proceedings (OSTI)

Procedures are described for normalizing the radiometric calibration of image radiances obtained from the suite of geostationary weather satellites that contributed data to the international Satellite Cloud Climatology Project. The key step is ...

Yves Desormeaux; William B. Rossow; Christopher L. Brest; G. Garrett Campbell

1993-06-01T23:59:59.000Z

133

Impact Study of AMSR-E Radiances in the NCEP Global Data Assimilation System  

Science Conference Proceedings (OSTI)

The impact of radiance observations from the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) was investigated in the National Centers for Environmental Prediction (NCEP) Global Data Assimilation System (GDAS). The GDAS ...

Masahiro Kazumori; Quanhua Liu; Russ Treadon; John C. Derber

2008-02-01T23:59:59.000Z

134

An Evaluation of Above- and In-Water Methods for Determining Water-Leaving Radiances  

Science Conference Proceedings (OSTI)

A high-quality dataset collected at an oceanographic tower was used to compare water-leaving radiances derived from simultaneous above- and in-water optical measurements. The former involved two different above-water systems and four different ...

Stanford B. Hooker; Gordana Lazin; Giuseppe Zibordi; Scott McLean

2002-04-01T23:59:59.000Z

135

Global Observations of Upper-Tropospheric Water Vapor Derived from TOVS Radiance Data  

Science Conference Proceedings (OSTI)

This paper describes a physically based method for the retrieval of upper-tropospheric humidity (UTH) and upper-tropospheric column water vapor (UTCWV) based an the use of radiance data collected by the TIROS Operational Vertical Sounder (TOVS), ...

Graeme L. Stephens; Darren L. Jackson; Ian Wittmeyer

1996-02-01T23:59:59.000Z

136

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

137

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

138

Dual-Regression Retrieval Algorithm for Real-Time Processing of Satellite Ultraspectral Radiances  

Science Conference Proceedings (OSTI)

A fast physically based dual-regression (DR) method is developed to produce, in real time, accurate profile and surface- and cloud-property retrievals from satellite ultraspectral radiances observed for both clear- and cloudy-sky conditions. The ...

William L. Smith Sr.; Elisabeth Weisz; Stanislav V. Kireev; Daniel K. Zhou; Zhenglong Li; Eva E. Borbas

2012-08-01T23:59:59.000Z

139

Assessing NOAA-16 HIRS Radiance Accuracy Using Simultaneous Nadir Overpass Observations from AIRS  

Science Conference Proceedings (OSTI)

The High-Resolution Infrared Radiation Sounder (HIRS) has been carried on NOAA satellites for more than two decades, and the HIRS data have been widely used for geophysical retrievals, climate studies, and radiance assimilation for numerical ...

Likun Wang; Changyong Cao; Pubu Ciren

2007-09-01T23:59:59.000Z

140

Global, Seasonal Cloud Variations from Satellite Radiance Measurements. Part I: Sensitivity of Analysis  

Science Conference Proceedings (OSTI)

Global, daily, visible and infrared radiance measurements from the NOAA-5 Scanning Radiometer (SR) are analyzed for the months of January, April, July and October 1977 to infer cloud and surface radiative properties. In this first paper in a ...

William B. Rossow; Leonid C. Garder; Andrew A. Lacis

1989-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

A Technique for Estimating Outgoing Longwave Radiation from HIRS Radiance Observations  

Science Conference Proceedings (OSTI)

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

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

1989-08-01T23:59:59.000Z

142

Global, Seasonal Cloud Variations from Satellite Radiance Measurements. Part II. Cloud Properties and Radiative Effects  

Science Conference Proceedings (OSTI)

Global, daily, visible and infrared radiance measurements from the NOAA-5 Scanning Radiometer (SR) are analyzed for the months of January, April, July and October 1977 to infer cloud and surface radiative properties and their effects on the Earth ...

William B. Rossow; Andrew A. Lacis

1990-11-01T23:59:59.000Z

143

A Method for Combining Radiances and Wind Shear to Define the Temperature Structure of the Atmosphere  

Science Conference Proceedings (OSTI)

The retrieval of temperature from satellite-observed radiances has traditionally been addressed as a one-dimensional or columnar problem which uses a guess profile of temperature. In this study, the traditional approach is augmented by ...

John Lewis; Christopher Hayden; John Derber

1989-06-01T23:59:59.000Z

144

Evaluating Added Benefits of Assimilating GOES Imager Radiance Data in GSI for Coastal QPFs  

Science Conference Proceedings (OSTI)

The Geostationary Operational Environmental Satellites (GOES) provide high-resolution, temporally continuous imager radiance data over the West Coast (GOES-West currently known as GOES-11) and East Coast (GOES-East currently GOES-12) of the United ...

Zhengkun Qin; Xiaolei Zou; Fuzhong Weng

2013-01-01T23:59:59.000Z

145

Satellite Radiance Assimilation in the JMA Operational Mesoscale 4D-Var System  

Science Conference Proceedings (OSTI)

The direct radiance assimilation scheme used in the Japan Meteorological Agency (JMA) global analysis system is applied to the JMA mesoscale 4-dimensional variational (4D-Var) system with two modifications. First, the data thinning distance is ...

Masahiro Kazumori

146

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

147

Using Sun Glint to Check the Relative Calibration of Reflected Spectral Radiances  

Science Conference Proceedings (OSTI)

Observations of sunlight reflected from regions of sun glint are used to check the relative calibration of spectral radiances obtained with imaging radiometers. Reflectances at different wavelengths for sun-glint regions are linearly related. ...

Gunnar Luderer; James A. Coakley Jr.; William R. Tahnk

2005-10-01T23:59:59.000Z

148

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

Science Conference Proceedings (OSTI)

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

George Ohring; Arnold Gruber; Robert Ellingson

1984-03-01T23:59:59.000Z

149

Clear-Sky Window Channel Radiances: A Comparison between Observations and the ECMWF Model  

Science Conference Proceedings (OSTI)

A comparison of clear-sky radiances of the Meteosat window channel with the European Centre for Medium-Range Weather Forecasts (ECMWF) model results is presented, aiming to assess both the model's performance and the quality of the observations. ...

Isabel F. Trigo; Pedro Viterbo

2003-10-01T23:59:59.000Z

150

Direct Insertion of MODIS Radiances in a Global Aerosol Transport Model  

Science Conference Proceedings (OSTI)

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

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

2007-03-01T23:59:59.000Z

151

Development of a GOES-R Advanced Baseline Imager Solar Channel Radiance Simulator for Ice Clouds  

Science Conference Proceedings (OSTI)

This paper describes the development of an ice cloud radiance simulator for the anticipated Geostationary Operational Environmental Satellite R (GOES-R) Advanced Baseline Imager (ABI) solar channels. The simulator is based on the discrete ...

Shouguo Ding; Ping Yang; Bryan A. Baum; Andrew Heidinger; Thomas Greenwald

2013-04-01T23:59:59.000Z

152

clough-99.PDF  

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

Effect on the Calculated Spectral Surface Radiances Effect on the Calculated Spectral Surface Radiances Due to MWR Scaling of Sonde Water Vapor Profiles S. A. Clough and P. D. Brown Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts J. C. Liljegren The Center for Non-Destructive Evaluation Applied Sciences Complex II Ames, Iowa D. D. Turner and T. R. Shippert Pacific Northwest National Laboratory Richland, Washington D. C. Tobin, H. E. Revercomb, and R. O. Knuteson Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin Introduction The accuracy limitation of the Atmospheric Emitted Radiance Interferometer/Line-by-Line Radiative Transfer Model (AERI/LBLRTM) Quality Measurement Experiment (QME) is principally attributable to uncertainties in the measurement of atmospheric water vapor. The QME is a closure experiment on

153

Beam shuttering interferometer and method - Energy Innovation Portal  

Hydropower, Wave and Tidal; ... inexpensive means to shutter each independent beam of the interferometer in order to facilitate the data acquisition requirements for ...

154

Mach-Zehnder interferometer based all optical flip-flop  

E-Print Network (OSTI)

For the first time an all optical flip-flop is demonstrated based on two coupled Mach-Zehnder interferometers which contain semiconductor optical amplifiers in their arms. The flip-flop operation is discussed and it is demonstrated using commercially available fiber pigtailed devices. Being based on Mach-Zehnder interferometers, the flip-flop has potential for very high speed operation.

Martin T. Hill; H. De Waardt; G. D. Khoe; H. J. S. Dorren

2000-01-01T23:59:59.000Z

155

ACCELERATION OF RADIANCE FOR LIGHTING SIMULATION BY USING PARALLEL COMPUTING WITH OPENCL  

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

ACCELERATION OF RADIANCE FOR LIGHTING SIMULATION BY USING ACCELERATION OF RADIANCE FOR LIGHTING SIMULATION BY USING PARALLEL COMPUTING WITH OPENCL Wangda Zuo, Andrew McNeil, Michael Wetter, Eleanor Lee Building Technologies Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA ABSTRACT We report on the acceleration of annual daylighting simulations for fenestration systems in the Radiance ray-tracing program. The algorithm was optimized to reduce both the redundant data input/output operations and the floating-point operations. To further accelerate the simulation speed, the calculation for matrix multiplications was implemented using parallel computing on a graphics processing unit. We used OpenCL, which is a cross- platform parallel programming language. Numerical

156

Polarized radiance fields under a dynamic ocean surface: a three-dimensional radiative transfer solution  

Science Conference Proceedings (OSTI)

The hybrid matrix operator, Monte Carlo (HMOMC) method previously reported [Appl. Opt.47, 1063-1071 (2008)APOPAI0003-693510.1364/AO.47.001063] is improved by neglecting higher-order terms in the coupling of the matrix operators and by introducing a dual grid scheme. The computational efficiency for solving the vector radiative transfer equation in a full 3D coupled atmosphere-surface-ocean system is substantially improved, and, thus, large-scale simulations of the radiance distribution become feasible. The improved method is applied to the computation of the polarized radiance field under realistic surface waves simulated by the power spectral density method. To the authors' best knowledge, this is the first time that the polarized radiance field under a dynamic ocean surface and the underwater image of an object above such an ocean surface have been reported.

You Yu; Zhai Pengwang; Kattawar, George W.; Yang Ping

2009-06-01T23:59:59.000Z

157

Probabilistic image reconstruction for radio interferometers  

E-Print Network (OSTI)

We present a novel, general-purpose method for deconvolving and denoising images from gridded radio interferometric visibilities using Bayesian inference based on a Gaussian process model. The method automatically takes into account incomplete coverage of the uv-plane and mode coupling due to the beam. Our method uses Gibbs sampling to efficiently explore the full posterior distribution of the underlying signal image given the data. We use a set of widely diverse mock images with a realistic interferometer setup and level of noise to assess the method. Compared to results from a proxy for the CLEAN method we find that in terms of RMS error and signal-to-noise ratio our approach performs better than traditional deconvolution techniques, regardless of the structure of the source image in our test suite. Our implementation scales as O(np log np), provides full statistical and uncertainty information of the reconstructed image, requires no supervision, and provides a robust, consistent framework for incorporating...

Sutter, P M; McEwen, Jason D; Bunn, Emory F; Karakci, Ata; Korotkov, Andrei; Timbie, Peter; Tucker, Gregory S; Zhang, Le

2013-01-01T23:59:59.000Z

158

EIT Based Gas Detector Design by Using Michelson Interferometer  

Science Conference Proceedings (OSTI)

Electromagnetically induced transparency (EIT) is one of the interesting phenomena of light-matter interaction which modifies matter properties for propagation of light. In other words, we can change the absorption and refractive index (RI) in neighborhood of the resonant frequency using EIT. In this paper, we have doped 3-level quantum dots in one of the Michelson Interferometer's mirror and used EIT to change its RI. So, a controllable phase difference between lights in two arms of interferometer is created. Long response time is the main drawback of Michelson interferometer based sensor, which is resolved by this technique.

Abbasian, K.; Rostami, A. [School of Engineering Emerging-Technologies, University of Tabriz, Tabriz 51666 (Iran, Islamic Republic of); Abdollahi, M. H. [Tabriz Oil Refining Company, Tabriz-Azarshahr freeway, Sardorud forked road, Tabriz (Iran, Islamic Republic of)

2011-12-26T23:59:59.000Z

159

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

160

Immersion Factor of In-Water Radiance Sensors: Assessment for a Class of Radiometers  

Science Conference Proceedings (OSTI)

The spectral immersion factor of in-water radiance sensors If quantifies the effects of changes in the sensor's response when operated in water versus in air. The values of If are currently computed with a relationship derived from a basic sensor ...

Giuseppe Zibordi

2006-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Monitoring of IR Clear-Sky Radiances over Oceans for SST (MICROS)  

Science Conference Proceedings (OSTI)

Monitoring of IR Clear-Sky Radiances over Oceans for SST (MICROS) is a Web-based tool to monitor “model minus observation” (M ? O) biases in clear-sky brightness temperatures (BTs) and sea surface temperatures (SSTs) produced by the Advanced Clear-...

Xingming Liang; Alexander Ignatov

2011-10-01T23:59:59.000Z

162

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

163

Autonomous Above-Water Radiance Measurements from an Offshore Platform: A Field Assessment Experiment  

Science Conference Proceedings (OSTI)

An autonomous system for making above-water radiance measurements has been produced by adding a new measurement scenario to a CIMEL CE-318 sun photometer. The new system, called the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Photometer ...

G. Zibordi; S. B. Hooker; J. F. Berthon; D. D'Alimonte

2002-05-01T23:59:59.000Z

164

Platform and Environmental Effects on Above-Water Determinations of Water-Leaving Radiances  

Science Conference Proceedings (OSTI)

A comparison of above- and in-water spectral measurements in Case-1 conditions showed the uncertainty in above-water determinations of water-leaving radiances depended on the pointing angle of the above-water instruments with respect to the side ...

Stanford B. Hooker; André Morel

2003-01-01T23:59:59.000Z

165

On the design of lithographic interferometers and their application  

E-Print Network (OSTI)

Interference lithography is presented as an ideal technique for fabricating large-area periodic structures with sub-100nm dimensions. A variety of interferometer designs are discussed and implemented, each of which emphasizes ...

Walsh, Michael E. (Michael Edward), 1975-

2004-01-01T23:59:59.000Z

166

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

167

Practical speed meter designs for QND gravitational-wave interferometers  

E-Print Network (OSTI)

In the quest to develop viable designs for third-generation optical interferometric gravitational-wave detectors (e.g., LIGO-III and EURO), one strategy is to monitor the relative momentum or speed of the test-mass mirrors, rather than monitoring their relative position. A previous paper analyzed a straightforward but impractical design for a {\\it speed-meter interferometer} that accomplishes this. This paper describes some practical variants of speed-meter interferometers. Like the original interferometric speed meter, these designs {\\it in principle} can beat the gravitational-wave standard quantum limit (SQL) by an arbitrarily large amount, over an arbitrarily wide range of frequencies. These variants essentially consist of a Michelson interferometer plus an extra "sloshing" cavity that sends the signal back into the interferometer with opposite phase shift, thereby cancelling the position information and leaving a net phase shift proportional to the relative velocity. {\\it In practice}, the sensitivity of...

Purdue, P; Purdue, Patricia; Chen, Yanbei

2002-01-01T23:59:59.000Z

168

Process of preparing metal parts to be heated by means of infrared radiance  

DOE Patents (OSTI)

A method for preparing metal for heating by infrared radiance to enable uniform and consistent heating. The surface of one or more metal parts, such as aluminum or aluminum alloy parts, is treated to alter the surface finish to affect the reflectivity of the surface. The surface reflectivity is evaluated, such as by taking measurements at one or more points on the surface, to determine if a desired reflectivity has been achieved. The treating and measuring are performed until the measuring indicates that the desired reflectivity has been achieved. Once the treating has altered the surface finish to achieve the desired reflectivity, the metal part may then be exposed to infrared radiance to heat the metal part to a desired temperature, and that heating will be substantially consistent throughout by virtue of the desired reflectivity.

Mayer, Howard Robinson (Cincinnati, OH); Blue, Craig A. (Knoxville, TN)

2009-06-09T23:59:59.000Z

169

Detection of Cloud-Top Height from Backscattered Radiances within the Oxygen A Band. Part 1: Theoretical Study  

Science Conference Proceedings (OSTI)

A series of radiative transfer calculations were performed to study the possibility of determining cloud-top pressure (height) from backscattered solar radiances within the oxygen A-band absorption. For the development of a cloud-top pressure ...

J. Fischer; H. Grassl

1991-09-01T23:59:59.000Z

170

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

171

Spatial Patterns of Climate Variability in Upper-Tropospheric Water Vapor Radiances from Satellite Data and Climate Model Simulations  

Science Conference Proceedings (OSTI)

The use of multivariate fingerprints and spatial pattern correlation in the detection and attribution of climate change has concentrated on radiosonde temperature fields. However, the large body of radiance data from satellite-borne instruments ...

A. J. Geer; J. E. Harries; H. E. Brindley

1999-07-01T23:59:59.000Z

172

A Model for Solar Spectral Irradiance and Radiance at the Bottom and Top of a Cloudless Atmosphere  

Science Conference Proceedings (OSTI)

A simple model is presented that, in a cloud-free atmosphere, calculates solar spectral direct and diffuse irradiance and directional radiance at the surface, spectral absorption within the atmosphere and the upward reflected spectral irradiance ...

C. G. Justus; M. V. Paris

1985-03-01T23:59:59.000Z

173

Toward an Integrated Land–Ocean Surface Skin Temperature Analysis from the Variational Assimilation of Infrared Radiances  

Science Conference Proceedings (OSTI)

Geostationary Operational Environmental Satellite (GOES)-East and -West window channel radiances are directly assimilated using a 1D variational technique, providing surface skin temperature (Ts) estimates over all surface types (land, water, or ...

Louis Garand

2003-05-01T23:59:59.000Z

174

Retrieval of Atmospheric Profiles from Satellite Radiance Data by Typical Shape Function Maximum a Posteriori Simultaneous Retrieval Estimators  

Science Conference Proceedings (OSTI)

The retrieval of vertical profiles of temperature and water vapor from atmospheric radiances is an ill-posed, nonlinear inversion problem. A linear retrieval estimator must be cast in a form which both minimizes the effects of unmodeled nonlinear ...

Michael J. Uddstrom

1988-05-01T23:59:59.000Z

175

Polarizing optical interferometer having a dual use optical element  

DOE Patents (OSTI)

A system for nondestructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading. 38 figures.

Kotidis, P.A.; Woodroffe, J.A.; Rostler, P.S.

1995-04-04T23:59:59.000Z

176

Polarizing optical interferometer having a dual use optical element  

DOE Patents (OSTI)

A system for non-destructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading.

Kotidis, Petros A. (Waban, MA); Woodroffe, Jaime A. (North Reading, MA); Rostler, Peter S. (Newton, MA)

1995-01-01T23:59:59.000Z

177

Six-channel adaptive fibre-optic interferometer  

SciTech Connect

We have proposed and analysed a scheme for the multiplexing of orthogonal dynamic holograms in photorefractive crystals which ensures almost zero cross talk between the holographic channels upon phase demodulation. A six-channel adaptive fibre-optic interferometer was built, and the detection limit for small phase fluctuations in the channels of the interferometer was determined to be 2.1 Multiplication-Sign 10{sup -8} rad W{sup 1/2} Hz{sup -1/2}. The channel multiplexing capacity of the interferometer was estimated. The formation of 70 channels such that their optical fields completely overlap in the crystal reduces the relative detection limit in the working channel by just 10 %. We found conditions under which the maximum cross talk between the channels was within the intrinsic noise level in the channels (-47 dB).

Romashko, R V; Bezruk, M N; Kamshilin, A A; Kulchin, Yurii N

2012-06-30T23:59:59.000Z

178

High data-rate atom interferometer for measuring acceleration  

Science Conference Proceedings (OSTI)

We demonstrate a high data-rate light-pulse atom interferometer for measuring acceleration. The device is optimized to operate at rates between 50 Hz to 330 Hz with sensitivities of 0.57{mu}g/{radical}(Hz) to 36.7{mu}g/{radical}(Hz), respectively. Our method offers a dramatic increase in data rate and demonstrates a path to applications in highly dynamic environments. The performance of the device can largely be attributed to the high recapture efficiency of atoms from one interferometer measurement cycle to another.

McGuinness, Hayden J. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Rakholia, Akash V.; Biedermann, Grant W. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Center for Quantum Information and Control (CQuIC), Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico, 87131 (United States)

2012-01-02T23:59:59.000Z

179

Rational choices for the wavelengths of a two color interferometer  

Science Conference Proceedings (OSTI)

If in a two color interferometer for plasma density measurements, the two wavelengths are chosen to have a ratio that is a rational number, and if the signals from each of the wavelengths are multiplied in frequency by the appropriate integer of the rational number and then heterodyned together, the resultant signal will have all effects of component motion nulled out. A phase measurement of this signal will have only plasma density information in it. With CO{sub 2} lasers, it is possible to find suitable wavelength pairs which are close enough to rational numbers to produce an improvement of about 100 in density resolution, compared to standard two color interferometers.

Jobes, F.C.

1995-07-01T23:59:59.000Z

180

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

Note: This page contains sample records for the topic "radiance interferometer aeri" 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.
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to obtain the most current and comprehensive results.


181

A novel white-light scanning interferometer for absolute nano-scale gap thickness measurement  

E-Print Network (OSTI)

This paper presents a special configuration of white-light scanning interferometer, in which the measured gap is not located in any interference arm of the interferometer, but acts as an amplitude-and-phase modulator of ...

Xu, Zhiguang

182

Tunable single-photon frequency conversion in a Sagnac interferometer  

E-Print Network (OSTI)

We study the single-photon frequency conversion of a five-level emitter coupled to a Sagnac interferometer. We show that the unity conversion efficiency can be achieved either in resonance or off-resonance case under the ideal condition. In particular, the frequency of the output photon can be controlled by the frequencies and Rabi frequencies of the external driving fields.

Wei-Bin Yan; Jin-Feng Huang; Heng Fan

2013-08-01T23:59:59.000Z

183

Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance  

SciTech Connect

We describe two methods which rely on bidirectional scattering distribution functions (BSDFs) to model the daylighting performance of complex fenestration systems (CFS), enabling greater flexibility and accuracy in evaluating arbitrary assemblies of glazing, shading, and other optically-complex coplanar window systems. Two tools within Radiance enable a) efficient annual performance evaluations of CFS, and b) accurate renderings of CFS despite the loss of spatial resolution associated with low-resolution BSDF datasets for inhomogeneous systems. Validation, accuracy, and limitations of the methods are discussed.

Ward, Gregory; Mistrick, Ph.D., Richard; Lee, Eleanor; McNeil, Andrew; Jonsson, Ph.D., Jacob

2011-01-21T23:59:59.000Z

184

Acceleration of Radiance for Lighting Simulation by Using Parallel Computing with OpenCL  

Science Conference Proceedings (OSTI)

We report on the acceleration of annual daylighting simulations for fenestration systems in the Radiance ray-tracing program. The algorithm was optimized to reduce both the redundant data input/output operations and the floating-point operations. To further accelerate the simulation speed, the calculation for matrix multiplications was implemented using parallel computing on a graphics processing unit. We used OpenCL, which is a cross-platform parallel programming language. Numerical experiments show that the combination of the above measures can speed up the annual daylighting simulations 101.7 times or 28.6 times when the sky vector has 146 or 2306 elements, respectively.

Zuo, Wangda; McNeil, Andrew; Wetter, Michael; Lee, Eleanor

2011-09-06T23:59:59.000Z

185

Radiance Temperature  

Science Conference Proceedings (OSTI)

... Temperature using Detectors Calibrated for Absolute Spectral Power Response, HW ... A Third Generation Water Bath Based Blackbody Source, JB ...

2013-06-27T23:59:59.000Z

186

A model for the directional distribution of the diffuse sky radiance with an application to a CPC collector  

SciTech Connect

The development of a new, semi-empirical model for the directional distribution of the diffuse radiance is reported. The proposed regression-type model, with the form of its base functions obtained from physical principles, is based on a combination of the purely physical reasoning approach and the purely empirical approach. Direct multiple-scattering calculations are circumvented through the use of the method of successive orders of scattering. The model is calibrated for the mean diffuse radiance estimated under all sky conditions reported in a large and comprehensive diffuse radiance data set. It is found that only a small increase in accuracy is gained by including higher orders of scattering, and this increase does not justify the complexity of the resulting model. Therefore, the single scattering approximation is recommended. The use of the model is illustrated in a typical application, in which the fraction of diffuse radiation intercepted by the receive of a compound parabolic concentrator is computed.

Siala, F.M.F. (Center for Solar Energy Studies, Tripoli (Libya)); Hooper, F.C. (Univ. of Toronto, Ontario (Canada))

1990-01-01T23:59:59.000Z

187

A Fiber Interferometer for the Magnetized Shock Experiment  

SciTech Connect

The Magnetized Shock Experiment (MSX) at Los Alamos National Laboratory requires remote diagnostics of plasma density. Laser interferometry can be used to determine the line-integrated density of the plasma. A multi-chord heterodyne fiber optic Mach-Zehnder interferometer is being assembled and integrated into the experiment. The advantage of the fiber coupling is that many different view chords can be easily obtained by simply moving transmit and receive fiber couplers. Several such fiber sets will be implemented to provide a time history of line-averaged density for several chords at once. The multiple chord data can then be Abel inverted to provide radially resolved spatial profiles of density. We describe the design and execution of this multiple fiber interferometer.

Yoo, Christian [Los Alamos National Laboratory

2012-08-30T23:59:59.000Z

188

Phase-shifting point diffraction interferometer mask designs  

DOE Patents (OSTI)

In a phase-shifting point diffraction interferometer, different image-plane mask designs can improve the operation of the interferometer. By keeping the test beam window of the mask small compared to the separation distance between the beams, the problem of energy from the reference beam leaking through the test beam window is reduced. By rotating the grating and mask 45.degree., only a single one-dimensional translation stage is required for phase-shifting. By keeping two reference pinholes in the same orientation about the test beam window, only a single grating orientation, and thus a single one-dimensional translation stage, is required. The use of a two-dimensional grating allows for a multiplicity of pinholes to be used about the pattern of diffracted orders of the grating at the mask. Orientation marks on the mask can be used to orient the device and indicate the position of the reference pinholes.

Goldberg, Kenneth Alan (Berkeley, CA)

2001-01-01T23:59:59.000Z

189

Phase-shifting point diffraction interferometer grating designs  

DOE Patents (OSTI)

In a phase-shifting point diffraction interferometer, by sending the zeroth-order diffraction to the reference pinhole of the mask and the first-order diffraction to the test beam window of the mask, the test and reference beam intensities can be balanced and the fringe contrast improved. Additionally, using a duty cycle of the diffraction grating other than 50%, the fringe contrast can also be improved.

Naulleau, Patrick (Oakland, CA); Goldberg, Kenneth Alan (Berkeley, CA); Tejnil, Edita (San Carlos, CA)

2001-01-01T23:59:59.000Z

190

Practical speed meter designs for QND gravitational-wave interferometers  

E-Print Network (OSTI)

In the quest to develop viable designs for third-generation optical interferometric gravitational-wave detectors (e.g., LIGO-III and EURO), one strategy is to monitor the relative momentum or speed of the test-mass mirrors, rather than monitoring their relative position. A previous paper analyzed a straightforward but impractical design for a {\\it speed-meter interferometer} that accomplishes this. This paper describes some practical variants of speed-meter interferometers. Like the original interferometric speed meter, these designs {\\it in principle} can beat the gravitational-wave standard quantum limit (SQL) by an arbitrarily large amount, over an arbitrarily wide range of frequencies. These variants essentially consist of a Michelson interferometer plus an extra "sloshing" cavity that sends the signal back into the interferometer with opposite phase shift, thereby cancelling the position information and leaving a net phase shift proportional to the relative velocity. {\\it In practice}, the sensitivity of these variants will be limited by the maximum light power $W_{\\rm circ}$ circulating in the arm cavities that the mirrors can support and by the leakage of vacuum into the optical train at dissipation points. In the absence of dissipation and with a squeezed vacuum of power squeeze factor ~ 0.1 inserted into the output port so as to keep the circulating power down, the SQL can be beat by a factor 10 in power at all frequencies below some chosen $f_{\\rm opt}\\simeq 100$ Hz, with $W_{\\rm circ}\\simeq 800$ kW. Estimates are given of the amount by which vacuum leakage at dissipation points will debilitate this sensitivity; these losses are 10% or less over most of the frequency range of interest.

Patricia Purdue; Yanbei Chen

2002-08-17T23:59:59.000Z

191

Improved ARM-SGP TOA OLR Fluxes from GOES-8 IR Radiances Based on CERES Data  

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

ARM-SGP TOA OLR Fluxes from GOES-8 IR ARM-SGP TOA OLR Fluxes from GOES-8 IR Radiances Based on CERES Data D. R. Doelling and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction The radiation budget at the top of the atmosphere (TOA) is a quantity of fundamental importance to the Atmospheric Radiation Measurement (ARM) Program. Thus, it is necessary to measure the radiation budget components, broadband shortwave albedo and outgoing longwave radiation (OLR), as accurately as possible. Measurement of OLR over the ARM surface sites has only been possible since the advent of Clouds and the Earth's Radiant Energy System (CERES; Wielicki et al. 1998) in 1998. Prior to

192

Optimization of displacement-measuring quadrature interferometers considering the real properties of optical components  

SciTech Connect

We present the influence of alignment and the real properties of optical components on the performance of a two-detector homodyne displacement-measuring quadrature laser interferometer. An experimental method, based on the optimization of visibility and sensitivity, was established and theoretically described to assess the performance and stability of the interferometer. We show that the optimal performance of such interferometers is achieved with the iterative alignment procedure described.

Pozar, Tomaz; Gregorcic, Peter; Mozina, Janez

2011-03-20T23:59:59.000Z

193

Hand held phase-shifting diffraction moire interferometer  

DOE Patents (OSTI)

An interferometer in which a coherent beam of light is generated within a remote case and transmitted to a hand held unit tethered to said remote case, said hand held unit having optical elements for directing a pair of mutually coherent collimated laser beams at a diffraction grating. Data from the secondary or diffracted beams are then transmitted to a separate video and data acquisition system for recording and analysis for load induced deformation or for identification purposes. Means are also provided for shifting the phase of one incident beam relative to the other incident beam and being controlled from within said remote case.

Deason, Vance A. (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID)

1994-01-01T23:59:59.000Z

194

Lithium atom interferometer using laser diffraction : description and experiments  

E-Print Network (OSTI)

We have built and operated an atom interferometer of the Mach-Zehnder type. The atomic wave is a supersonic beam of lithium seeded in argon and the mirrors and beam-splitters for the atomic wave are based on elastic Bragg diffraction on laser standing waves at 671 nm. We give here a detailed description of our experimental setup and of the procedures used to align its components. We then present experimental signals, exhibiting atomic interference effects with a very high visibility, up to 84.5 %. We describe a series of experiments testing the sensitivity of the fringe visibility to the main alignment defects and to the magnetic field gradient.

Alain Miffre; Marion Jacquey; Matthias Büchner; Gérard Trenec; Jacques Vigue

2004-10-22T23:59:59.000Z

195

Hand held phase-shifting diffraction Moire interferometer  

DOE Patents (OSTI)

An interferometer is described in which a coherent beam of light is generated within a remote case and transmitted to a hand held unit tethered to said remote case, said hand held unit having optical elements for directing a pair of mutually coherent collimated laser beams at a diffraction grating. Data from the secondary or diffracted beams are then transmitted to a separate video and data acquisition system for recording and analysis for load induced deformation or for identification purposes. Means are also provided for shifting the phase of one incident beam relative to the other incident beam and being controlled from within said remote case. 4 figs.

Deason, V.A.; Ward, M.B.

1994-09-20T23:59:59.000Z

196

ARM - Publications: Science Team Meeting Documents  

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

Infrared Interferometric Measurements of the Air-Sea Temperature Difference Infrared Interferometric Measurements of the Air-Sea Temperature Difference Minnett, P.J., Rosenstiel School of Marine and Atmospheric Science, University of Miami Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Marine Atmosphere Emitted Radiance Interferometers (M-AERI) have been mounted on several research ships on cruises in the world?s oceans, several in the areas of the ARM TWP and NSA-AAO sites. Accurate measurements of the skin sea-surface temperature and near-surface air temperatures are derived from the infrared spectral measurements, which, unlike conventional measurements of air-sea temperature difference, have a common calibration. This removes the largest source of uncertainty in the measurement of air-sea temperature differences, and thereby a major uncertainty in

197

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

198

1  

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

and Visualization of AERIPLUS Temperature and Visualization of AERIPLUS Temperature and Moisture Profiles for Assimilation into ARM Single-Column Models W. F. Feltz, R. O. Knuteson, H. B. Howell, B. Hibbard, T. Rink, and T. Whittaker Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin D. D. Turner Pacific Northwest National Laboratory Richland, Washington S. Xie and R. T. Cederwall Lawrence Livermore National Laboratory Livermore, California Introduction Using remotely sensed temperature, moisture, and wind data to initialize and drive Single-Column Models (SCM) is an important goal of the Atmospheric Radiation Measurement (ARM) Program. Since December 1998, five atmospheric emitted radiance interferometer (AERI) (Revercomb et al. 1993) systems have been running nearly continuously at the central and boundary facilities at the Southern

199

Section 56  

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

0.5° 0.5° C 0° C Session Papers 237 Enhancement of Atmospheric Radiation Measurement Surface Meteorological Observations During the Fall 1996 Water Vapor Intensive Observation Period S. J. Richardson and M. E. Splitt Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma Abstract This work describes in situ moisture sensor comparisons performed in conjunction with the first Water Vapor (WV) Intensive Observation Period (IOP) conducted at the Atmos- pheric Radiation Measurement (ARM) Program Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site during September of 1996. Numerous remote sensing instruments (e.g., two Raman Lidar, two Atmospheric Emitted Radiance Interferometers [AERI], and a suite of 13 microwave radiometers) were assembled at the CART site

200

brown-98.pdf  

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

High Resolution Validation in the Shortwave: High Resolution Validation in the Shortwave: ASTI/LBLRTM QME P. D. Brown, S. A. Clough, and E. J. Mlawer Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts T. R. Shippert Pacific Northwest National Laboratory Richland, Washington F. J. Murcray Denver University Denver, Colorado Introduction To assess our modeling capability in the shortwave and to resolve issues including those described by Cess et al. (1995) and others (Li and Moreau 1996; Arking 1996), a Quality Measurement Experiment (QME) has been initiated that extends the approach of the longwave AERI/LBLRTM (atmospheric emitted radiance interferometer/line by line radiative transfer model) QME (Brown et al. 1998) to shorter wavelengths. This shortwave QME for the clear sky focuses upon three components: 1) the ability to accurately

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

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

202

ARM - Site Instruments  

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

FacilitiesAMF Deployment, Ganges Valley, FacilitiesAMF Deployment, Ganges Valley, IndiaInstruments Ganges Valley Deployment AMF Home Ganges Valley Home Data Plots and Baseline Instruments Campaign Images WRF Model Simulations for GVAX Experiment Planning GVAX Full Proposal Abstract and Related Campaigns Science Plan Outreach GVAX Backgrounder (PDF, 1.4MB) News Education Flyer (PDF, 2.1MB) AMF Poster, 2011 Images Contacts V. Rao Kotamarthi Instruments : Ganges Valley, India [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Data [ Single installation ] CCN Cloud Condensation Nuclei Particle Counter Aerosols Browse Data [ Single installation ] CLAP Continuous Light Absorption Photometer Aerosols Browse Data

203

ARM - Publications: Science Team Meeting Documents: Measurements of  

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

Measurements of atmospheric water vapor over the oceans Measurements of atmospheric water vapor over the oceans Szczodrak, Malgorzata University of Miami Minnett, Peter University of Miami Feltz, Wayne University of Wisconsin Atmospheric water vapor is an important part of the Earth's hydrological cycle and plays a crucial role in many aspects of the climate system. The main source of the atmospheric moisture are the oceans, but the information we have about the distribution of atmospheric water vapor over the oceans is based on a relatively sparse distribution of radiosonde profiles, or on satellite-based measurements from microwave radiometers. The Marine-Atmosphere Emitted Radiance Interferometer (M-AERI) is a sea-going instrument that measures spectra of atmospheric infrared emission with ~10 minute temporal resolution. These spectra can be used to retrieve profiles

204

Section 111  

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

W/m W/m 2 Session Papers 499 The Status of Quality Measurement Experiments in the Microwave, Longwave, and Shortwave P. D. Brown and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts D. D. Turner and T. R. Shippert Pacific Northwest National Laboratory Richland, Washington R. O. Knuteson, H. E. Revercomb and W. L. Smith University of Wisconsin Madison, Wisconsin Introduction Spectral analyses from the Atmospheric Emitted Radiance Interferometer/Line-by-Line Radiative Transfer Model (AERI/LBLRTM) Quality Measurement Experiment (QME) have proven critical in the assessment of clear sky radiative transfer modeling capability for general circulation models (GCMs). The QME provides a mechanism for the assessment of the three critical components of the longwave spectral

205

* 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

206

1  

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

Sensitivity of Convective Indices to Humidity Adjustments Sensitivity of Convective Indices to Humidity Adjustments M. E. Splitt University of Utah Salt Lake City, Utah R. A. Peppler Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma K. M. Kuhlman University of North Carolina Asheville, North Carolina Introduction Modification of Atmospheric Radiation Measurement (ARM) Program Balloon-borne Sounding System (BBSS) data streams has been conducted as part of instantaneous radiative Flux (IRF) Working Group efforts to improve the comparison between Atmospheric Emitted Radiance Interferometer (AERI) spectral infrared radiation measurements and line-by-line radiative transfer model estimates (Turner et al. 1998). The focus for the modification of BBSS data has been on its humidity measurements. The

207

Charge Detection in a Closed-Loop Aharonov-Bohm Interferometer  

E-Print Network (OSTI)

We report on a study of complementarity in a two-terminal "closed-loop" Aharonov-Bohm interferometer. In this interferometer, the simple picture of two-path interference cannot be applied. We introduce a nearby quantum point contact to detect the electron in a quantum dot inserted in the interferometer. We found that charge detection reduces but does not completely suppress the interference even in the limit of perfect detection. We attribute this phenomenon to the unique nature of the closed-loop interferometer. That is, the closed-loop interferometer cannot be simply regarded as a two-path interferometer because of multiple reflections of electrons. As a result, there exist indistinguishable paths of the electron in the interferometer and the interference survives even in the limit of perfect charge detection. This implies that charge detection is not equivalent to path detection in a closed-loop interferometer. We also discuss the phase rigidity of the transmission probability for a two-terminal conductor in the presence of a detector.

Gyong Luck Khym; Kicheon Kang

2006-06-14T23:59:59.000Z

208

Analysis of spatial mode sensitivity of gravitational wave interferometer and targeted search for gravitational radiation from the Crab pulsar  

E-Print Network (OSTI)

Over the last several years the Laser Interferometer Gravitational Wave Observatory (LIGO) has been making steady progress in improving the sensitivities of its three interferometers, two in Hanford, Washington, and one ...

Betzwieser, Joseph (Joseph Charles)

2008-01-01T23:59:59.000Z

209

Evaluating Water Vapor in the NCAR CAM3 Climate Model with RRTMG/McICA using Modeled and Observed AIRS Spectral Radiances  

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

Water Vapor in the NCAR CAM3 Climate Model with Water Vapor in the NCAR CAM3 Climate Model with RRTMG/McICA using Modeled and Observed AIRS Spectral Radiances Michael J. Iacono, Atmospheric and Environmental Research, Inc., 131 Hartwell Avenue, Lexington, MA 02421 USA 1. Overview Objectives: * Evaluate water vapor and temperature simulation in two versions of CAM3 by comparing modeled and observed cloud-cleared AIRS spectral radiances. * Use spectral differences to verify comparisons between modeled water vapor and temperature and observed fields retrieved from AIRS radiances. Models: OSS: Optimal Spectral Sampling model developed at AER was used to simulate clear sky AIRS radiance spectra in CAM3. RRTMG/McICA: ARM-supported LW and SW radiative transfer model developed at AER for application to GCMs. RRTMG has been fully

210

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

Science Conference Proceedings (OSTI)

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

Fuzhong Weng; Tong Zhu; Banghua Yan

2007-11-01T23:59:59.000Z

211

Impact of Assimilating AMSU-A Radiances on Forecasts of 2008 Atlantic Tropical Cyclones Initialized with a Limited-Area Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

The impact of assimilating radiance observations from the Advanced Microwave Sounding Unit-A (AMSU-A) on forecasts of several tropical cyclones (TCs) was studied using the Weather Research and Forecasting Model (WRF) and a limited-area ensemble ...

Zhiquan Liu; Craig S. Schwartz; Chris Snyder; So-Young Ha

2012-12-01T23:59:59.000Z

212

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

213

Top-of-Atmosphere Radiance-to-Flux Conversion in the SW Domain for the ScaRaB-3 Instrument on Megha-Tropiques  

Science Conference Proceedings (OSTI)

The earth radiation budget (ERB) is the difference between the solar absorbed flux and the terrestrial emitted flux. These fluxes are calculated from satellite measurements of outgoing shortwave (SW) and longwave (LW) radiances using empirical or ...

Michel Viollier; Carsten Standfuss; Olivier Chomette; Arnaud Quesney

2009-10-01T23:59:59.000Z

214

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

Science Conference Proceedings (OSTI)

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

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

1989-08-01T23:59:59.000Z

215

Identification of errors in the electron density measurements of a tangential interferometer/polarimeter system during a tokamak discharge  

Science Conference Proceedings (OSTI)

A new method for the comparative verification of electron density measurements obtained with a tangential interferometer and a polarimeter during a discharge is proposed. The possible errors associated with the interferometer and polarimeter are classified by the time required for their identification. Based on the characteristics of the errors, the fringe shift error of the interferometer and the low-frequency noise of the polarimeter were identified and corrected for the JT-60U tangential interferometer/polarimeter system.

Arakawa, H.; Kawano, Y.; Itami, K. [Japan Atomic Energy Agency, 801-1, Mukoyama, Naka 311-0193 (Japan)

2012-10-15T23:59:59.000Z

216

Influence of sky radiance measurement errors on inversion-retrieved aerosol properties  

SciTech Connect

Remote sensing of the atmospheric aerosol is a well-established technique that is currently used for routine monitoring of this atmospheric component, both from ground-based and satellite. The AERONET program, initiated in the 90's, is the most extended network and the data provided are currently used by a wide community of users for aerosol characterization, satellite and model validation and synergetic use with other instrumentation (lidar, in-situ, etc.). Aerosol properties are derived within the network from measurements made by ground-based Sun-sky scanning radiometers. Sky radiances are acquired in two geometries: almucantar and principal plane. Discrepancies in the products obtained following both geometries have been observed and the main aim of this work is to determine if they could be justified by measurement errors. Three systematic errors have been analyzed in order to quantify the effects on the inversion-derived aerosol properties: calibration, pointing accuracy and finite field of view. Simulations have shown that typical uncertainty in the analyzed quantities (5% in calibration, 0.2 Degree-Sign in pointing and 1.2 Degree-Sign field of view) yields to errors in the retrieved parameters that vary depending on the aerosol type and geometry. While calibration and pointing errors have relevant impact on the products, the finite field of view does not produce notable differences.

Torres, B.; Toledano, C.; Cachorro, V. E.; Bennouna, Y. S.; Fuertes, D.; Gonzalez, R.; Frutos, A. M. de [Atmospheric Optics Group (GOA), University of Valladolid, Valladolid (Spain); Berjon, A. J. [Izana Atmospheric Research Center, Meteorological State Agency of Spain (AEMET), Sta. Cruz de Tenerife (Spain); Dubovik, O.; Goloub, P.; Podvin, T.; Blarel, L. [Laboratory of Atmospheric Optics, Universite Lille 1, Villeneuve d'Ascq (France)

2013-05-10T23:59:59.000Z

217

Quantum Limits of Interferometer Topologies for Gravitational Radiation Detection  

E-Print Network (OSTI)

In order to expand the astrophysical reach of gravitational wave detectors, several interferometer topologies have been proposed to evade the thermodynamic and quantum mechanical limits in future detectors. In this work, we make a systematic comparison among them by considering their sensitivities and complexities. We numerically optimize their sensitivities by introducing a cost function that tries to maximize the broadband improvement over the sensitivity of current detectors. We find that frequency-dependent squeezed-light injection with a hundred-meter scale filter cavity yields a good broadband sensitivity, with low complexity, and good robustness against optical loss. This study gives us a guideline for the near-term experimental research programs in enhancing the performance of future gravitational-wave detectors.

Haixing Miao; Huan Yang; Rana X Adhikari; Yanbei Chen

2013-05-17T23:59:59.000Z

218

One millimeter wave interferometer for the measurement of line integral electron density on TFTR  

SciTech Connect

A two-pass interferometer at 285 GHz has been developed to measure the line-integrated electron density on the horizontal midplane of the Toroidal Fusion Test Reactor (TFTR). Presently, the interferometer employs a 2 MW solid state source to supply the launch wave, a 2 mm klystron oscillator, and a harmonic mixer to provide a superheterodyne front end. The transmission system consists of 25 meters of C-band rectangular waveguide, adjustable miter bends, and a spherical mirror in the vacuum vessel with a total round trip transmission loss of 21 dB. The interferometer signal-to-noise ratio is greater than or equal to 50 dB. Utilization of a feed-forward tracking system provides long-term stable operation. The interferometer routinely provides real time feedback control for the gas injection system and a permissive for neutral beam operation.

Efthimion, P.C.; Taylor, G.; Ernst, W.; Goldman, M.; McCarthy, M.; Anderson, H.; Luhmann, N.C.

1985-03-01T23:59:59.000Z

219

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

220

An Evaluation of High-Resolution Interferometer Soundings and Their Use in Mesoscale Analyses  

Science Conference Proceedings (OSTI)

An aircraft prototype of the High-Resolution Interferometer Sounder (HIS) was flown over Tennesse and northern Alabama during summer 1986. HIS temperature and dewpoint soundings were examined on two flight days to determine their error ...

John T. Bradshaw; Henry E. Fuelberg

1993-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Laboratory Calibration in Distilled Water and Seawater of an Oceanographic Multichannel Interferometer-Refractometer  

Science Conference Proceedings (OSTI)

This paper begins by presenting the history and relevance of the index of refraction as a parameter in physical oceanography, the principle of operation and construction of a Russian interferometer-refractometer, the prior results of the use of ...

G. A. Seaver; V. L. Vlasov; A. G. Kostianoy

1997-04-01T23:59:59.000Z

222

White-light scanning interferometer for absolute nano-scale gap thickness measurement  

E-Print Network (OSTI)

A special configuration of white-light scanning interferometer is described for measuring the absolute air gap thickness between two planar plates brought into close proximity. The measured gap is not located in any ...

Xu, Zhiguang

223

Non-contact measurements of ultrasonic waves on paper webs using a photorefractive interferometer  

DOE Patents (OSTI)

An apparatus and method for non-contact measurement of ultrasonic waves on moving paper webs employs a photorefractive interferometer. The photorefractive interferometer employs an optical head in which the incident beam and reflected beam are coaxial, thus enabling detection of both in-plane and out-of-plane waves with a single apparatus. The incident beam and reference beams are focused into a line enabling greater power to be used without damaging the paper.

Brodeur, Pierre H. (Smyrna, GA); Lafond, Emmanuel F. (Atlanta, GA)

2000-01-01T23:59:59.000Z

224

Simultaneous measurement of gravity acceleration and gravity gradient with an atom interferometer  

SciTech Connect

We demonstrate a method to measure the gravitational acceleration with a dual cloud atom interferometer; the use of simultaneous atom interferometers reduces the effect of seismic noise on the gravity measurement. At the same time, the apparatus is capable of accurate measurements of the vertical gravity gradient. The ability to determine the gravity acceleration and gravity gradient simultaneously and with the same instrument opens interesting perspectives in geophysical applications.

Sorrentino, F.; Lien, Y.-H.; Rosi, G.; Tino, G. M. [Dipartimento di Fisica e Astronomia and LENS, Universita di Firenze, INFN Sezione di Firenze, via Sansone 1, I-50019 Sesto Fiorentino (Italy); Bertoldi, A. [Laboratoire Charles Fabry de l'Institut d'Optique, CNRS and Universite Paris-Sud Campus Polytechnique, RD 128, F-91127 Palaiseau cedex (France); Bodart, Q. [Dipartimento di Fisica e Astronomia and LENS, Universita di Firenze, INFN Sezione di Firenze, via Sansone 1, I-50019 Sesto Fiorentino (Italy); European Space Agency, Research and Scientific Support Department, Keplerlaan 1, 2201 AZ Noordwijk (Netherlands); Cacciapuoti, L. [European Space Agency, Research and Scientific Support Department, Keplerlaan 1, 2201 AZ Noordwijk (Netherlands); Angelis, M. de [Istituto di Fisica Applicata 'Nello Carrara' CNR, via Madonna del Piano 10, I-50019 Sesto Fiorentino (Italy); Prevedelli, M. [Dipartimento di Fisica dell'Universita di Bologna, Via Irnerio 46, I-40126, Bologna (Italy)

2012-09-10T23:59:59.000Z

225

A new method for determining the plasma electron density using three-color interferometer  

Science Conference Proceedings (OSTI)

A new method for determining the plasma electron density using the fractional fringes on three-color interferometer is proposed. Integrated phase shift on each interferometer is derived without using the temporal history of the fractional fringes. The dependence on the fringe resolution and the electrical noise are simulated on the wavelengths of CO{sub 2} laser. Short-time integrations of the fractional fringes enhance the reliability of this method.

Arakawa, Hiroyuki; Kawano, Yasunori; Itami, Kiyoshi [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka-shi, Ibaraki 311-0193 (Japan)

2012-06-15T23:59:59.000Z

226

Theory of a one-dimensional double-X atom interferometer  

E-Print Network (OSTI)

The dynamics of an atom waveguide X-junction beam splitter becomes truly 1D in a regime of low temperatures and densities and large positive scattering lengths where the transverse mode becomes frozen and the many-body Schrodinger dynamics becomes exactly soluble via a generalized Fermi-Bose mapping theorem. We analyze the interferometric response of a double-X interferometer of this type due to potential differences between the interferometer arms.

Marvin D. Girardeau; Kunal K. Das; Ewan M. Wright

2002-03-08T23:59:59.000Z

227

LCLS X-ray mirror measurements using a large aperture visible light interferometer  

Science Conference Proceedings (OSTI)

Synchrotron or FEL X-ray mirrors are required to deliver an X-ray beam from its source to an experiment location, without contributing significantly to wave front distortion. Accurate mirror figure measurements are required prior to installation to meet this intent. This paper describes how a 300 mm aperture phasing interferometer was calibrated to LCLS) at Stanford Linear Accelerator Center. Measuring focus mirrors with an interferometer requires additional calibration, because high fringe density introduces systematic errors from the interferometer's imaging optics. This paper describes how these errors can be measured and corrected. The calibration approaches described here apply equally well to interferometers larger than 300 mm aperture, which are becoming more common in optics laboratories. The objective of this effort was to install LCLS flats with < 10 nm of spherical curvature, and < 2 nm rms a-sphere. The objective was met by measuring the mirrors after fabrication, coating and mounting, using a 300 mm aperture phasing interferometer calibrated to an accuracy < 1 nm. The key to calibrating the interferometer accurately was to sample the error using independent geometries that are available. The results of those measurements helped identify and reduce calibration error sources. The approach used to measure flats applies equally well to focus mirrors, provided an additional calibration is performed to measure the error introduced by fringe density. This calibration has been performed on the 300 mm aperture interferometer, and the measurement correction was evaluated for a typical focus mirror. The 300 mm aperture limitation requires stitching figure measurements together for many X-ray mirrors of interest, introducing another possible error source. Stitching is eliminated by applying the calibrations described above to larger aperture instruments. The authors are presently extending this work to a 600 mm instrument. Instruments with 900 mm aperture are now becoming available, which would accommodate the largest mirrors of interest.

McCarville, T; Soufli, R; Pivovaroff, M

2011-03-02T23:59:59.000Z

228

Security of high-dimensional quantum key distribution protocols using Franson interferometers  

E-Print Network (OSTI)

Franson interferometers are increasingly being proposed as a means of securing high-dimensional energy-time entanglement-based quantum key distribution (QKD) systems. Heuristic arguments have been proposed that purport to demonstrate the security of these schemes. We show, however, that such systems are vulnerable to attacks that localize the photons to several temporally separate locations. This demonstrates that a single pair of Franson interferometers is not a practical approach to securing high-dimensional energy-time entanglement based QKD. This observations leads us to investigate the security of modified Franson-based-protocols, where Alice and Bob have two or more Franson interferometers. We show that such setups can improve the sensitivity against attacks that localize the photons to multiple temporal locations. While our results do not constituting a full security proof, they do show that a single pair of Franson interferometers is not secure and that multiple such interferometers could be a promising candidate for experimentally realizable high-dimensional QKD.

Thomas Brougham; Stephen M. Barnett; Kevin T. McCusker; Paul G. Kwiat; Daniel J. Gauthier

2013-05-20T23:59:59.000Z

229

Method and apparatus for measuring surface movement of an object using a polarizing interferometer  

DOE Patents (OSTI)

A system for non-destructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading. 38 figs.

Schultz, T.J.; Kotidis, P.A.; Woodroffe, J.A.; Rostler, P.S.

1995-05-09T23:59:59.000Z

230

Using MetOp-A AVHRR Clear-Sky Measurements to Cloud-Clear MetOp-A IASI Column Radiances  

Science Conference Proceedings (OSTI)

High spatial resolution measurements from the Advanced Very High Resolution Radiometer (AVHRR) on the Meteorological Operation (MetOp)-A satellite that are collocated to the footprints from the Infrared Atmospheric Sounding Interferometer (IASI) ...

Eric S. Maddy; Thomas S. King; Haibing Sun; Walter W. Wolf; Christopher D. Barnet; Andrew Heidinger; Zhaohui Cheng; Mitchell D. Goldberg; Antonia Gambacorta; Chen Zhang; Kexin Zhang

2011-09-01T23:59:59.000Z

231

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

232

Automatic Mirror Alignment for VIRGO: First experimental demonstration of the Anderson technique on a large-scale interferometer  

E-Print Network (OSTI)

The French-Italian interferometric gravitational wave detector VIRGO is currently being commissioned. Its principal instrument is a Michelson laser interferometer with 3 km long optical cavities in the arms and a power-recycling mirror. The interferometer resides in an ultra-high vacuum system and the mirrors are suspended from multistage pendulums for seismic isolation. This type of laser interferometer reaches its maximum sensitivity only when the optical setup is held actively very accurately at a defined operating point: control systems using the precise interferometer signals stabilise the longitudinal and angular positions of the optical component. This paper gives an overview of the control system for the angular degrees of freedom; we present the current status of the system and report the first experimental demonstration of the Anderson technique on a large-scale interferometer.

A. Freise; for the VIRGO Collaboration

2004-11-24T23:59:59.000Z

233

A 145-GHz Interferometer for Measuring the Anisotropy of the Cosmic Microwave  

E-Print Network (OSTI)

alternative to a day in the machine shop making something that looks beautiful. Joe Fowler and I seemed and Sideband Separation (Fowler 2001). Figure 2.3 shows the important components of an interferometer: two. We drop it and find that r() is indeed proportional to r VAVBei , as advertised (Fowler 2001

234

Active laser frequency stabilization and resolution enhancement of interferometers for the measurement of gravitational waves in space  

E-Print Network (OSTI)

Laser frequency stabilization is notably one of the major challenges on the way to a space-borne gravitational wave observatory. The proposed Laser Interferometer Space Antenna (LISA) is presently under development in an ESA, NASA collaboration. We present a novel method for active laser stabilization and phase noise suppression in such a gravitational wave detector. The proposed approach is a further evolution of the "arm locking" method, which in essence consists of using an interferometer arm as an optical cavity, exploiting the extreme long-run stability of the cavity size in the frequency band of interest. We extend this method by using the natural interferometer arm length differences and existing interferometer signals as additional information sources for the reconstruction and active suppression of the quasi-periodic laser frequency noise, enhancing the resolution power of space-borne gravitational wave detectors.

Markus Herz

2005-06-27T23:59:59.000Z

235

Mirror thermal noise in laser interferometer gravitational wave detectors operating at room and cryogenic temperature  

E-Print Network (OSTI)

Mirror thermal noise is and will remain one of the main limitations to the sensitivity of gravitational wave detectors based on laser interferometers. We report about projected mirror thermal noise due to losses in the mirror coatings and substrates. The evaluation includes all kind of thermal noises presently known. Several of the envisaged substrate and coating materials are considered. The results for mirrors operated at room temperature and at cryogenic temperature are reported.

Janyce Franc; Nazario Morgado; Raffaele Flaminio; Ronny Nawrodt; Iain Martin; Liam Cunningham; Alan Cumming; Sheila Rowan; James Hough

2009-12-01T23:59:59.000Z

236

Imaging simulations of selected science with the Magdalena Ridge Observatory Interferometer  

E-Print Network (OSTI)

Cavendish Laboratory, J.J.Thomson Avenue, Cambridge, UK, CB3 0HE; cHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts, USA 02138 dMax Planck Institute for Astrophysics, Karl-Schwarzschild-Strass-1, Garching, Germany, 85741; e... resolution demonstrated here is likely to be a transformational step in contemporary astrophysics. REFERENCES [1] Creech-Eakman, M. et al., “Magdalena Ridge Observatory Interferometer: advancing to first light and new science”, Proceedings SPIE, 7734, 5...

Creech-Eakman, Michelle; Young, John; Haniff, Christopher; Buscher, David; Elvis, Martin; Chiavassa, Andrea; Schartmann, Marc

237

Bunch length measurement at the Fermilab A0 photoinjector using a Martin-Puplett interferometer  

Science Conference Proceedings (OSTI)

We present preliminary measurements of the electron bunch lengths at the Fermilab A0 Photoinjector using a Martin-Puplett interferometer on loan from DESY. The photoinjector provides a relatively wide range of bunch lengths through laser pulse width adjustment and compression of the beam using a magnetic chicane. We present comparisons of data with simulations that account for diffraction distortions in the signal and discuss future plans for improving the measurement.

Thurman-Keup, Randy; Fliller, Raymond Patrick; Kazakevich, Grigory; /Fermilab

2008-05-01T23:59:59.000Z

238

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

239

The 7-channel FIR HCN Interferometer on J-TEXT Tokamak  

E-Print Network (OSTI)

A seven-channel far-infrared hydrogen cyanide (HCN) laser interferometer has been established aiming to provide the line integrated plasma density for the J-TEXT experimental scenarios. A continuous wave glow discharge HCN laser designed with a cavity length 3.4 m is used as the laser source with a wavelength of 337 {\\mu}m and an output power up to 100 mW. The system is configured as a Mach-Zehnder type interferometer. Phase modulation is achieved by a rotating grating, with a modulation frequency of 10 kHz which corresponds to the temporal resolution of 0.1 ms. The beat signal is detected by TGS detector. The phase shift induced by the plasma is derived by the comparator with a phase sensitivity of 0.06 fringe. The experimental results measured by the J-TEXT interferometer are presented in details. In addition, the inversed electron density profile done by a conventional approach is also given. The kinematic viscosity of dimethyl silicone and vibration control is key issues for the system performance. The laser power stability under different kinematic viscosity of silicone oil is presented. A visible improvement of measured result on vibration reduction is shown in the paper.

Wei Chen; L. Gao; J. Chen; Q. Li; Z. J. Wang; G. Zhuang

2011-11-24T23:59:59.000Z

240

First results from the J-TEXT high-resolution three-wave polarimeter-interferometer  

Science Conference Proceedings (OSTI)

A laser-based far-infrared polarimeter-interferometer system utilizing the three-wave technique has been implemented on the J-TEXT tokamak. The polarimeter determines the Faraday effect by measuring the phase difference between two collinear, counter-rotating, circularly polarized laser beams. The first results of the polarimeter-interferometer designed for J-TEXT have been obtained in the most recent J-TEXT experimental campaign. Simultaneous polarimetric and interferometric measurement is achieved, with phase resolution up to 0.1 Degree-Sign , at bandwidth of 50 kHz. The temporal resolution, which is dependent on the laser's frequency offset, is {approx}1 {mu}s. Continual spatial measurement covering 45 cm (80% of the plasma cross-section) is realized by utilizing 1D parabolic beam expansion optics. Three initial test chords are installed and future plans call for expansion up to 30 chords with 1.5 cm chord spacing, providing high spatial resolution for measurement of electron density and current density profiles. Reliability of both polarimetric and interferometric measurement is confirmed by comparison with computation and data from a hydrocyanic acid (HCN) interferometer. With the high temporal and phase resolution, perturbations associated with the sawtooth cycle and MHD activity have been observed.

Chen, J.; Zhuang, G.; Wang, Z. J.; Gao, L.; Li, Q.; Chen, W. [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 (China); Brower, D. L.; Ding, W. X. [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States)

2012-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Research Highlight  

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

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

242

Michelson interferometer design for Linac Coherent Light Source (LCLS) applications in the 15 Anstrom to 1.5 Anstrom wavelength range  

E-Print Network (OSTI)

Michelson interferometer design for Linac Coherent Light Source (LCLS) applications in the 15 Anstrom to 1.5 Anstrom wavelength range

Tatchy, R

1999-01-01T23:59:59.000Z

243

Radiance Temperature Calibrations  

Science Conference Proceedings (OSTI)

... Argon Supply and Alarm 55 "C Chilled Water/Cold Water Switch Digital Voltmeter Gold-filled Crucible Heat Pipe Furnace Personal Computer ...

2010-08-19T23:59:59.000Z

244

A Fabry-Perot interferometer for sub-meV x-ray energy resolution  

Science Conference Proceedings (OSTI)

The optical theory of Fabry-Perot interferometers (FPIs) for x rays using dynamically diffracting thin perfect crystals as reflectors is developed. Application to a device using high diffraction orders in silicon crystals of thickness of the order of 100 {mu}m or more shows that energy resolutions of the order of a tenth of a meV are achievable. The effect that various features, such as gap and mirror thickness, lattice mismatches, etc., have on the FPI resonances is studied. {copyright} {ital 1996 American Institute of Physics.}

Caticha, A.; Aliberti, K. [Department of Physics, The University at Albany-SUNY, Albany, NY 12222 (United States)] [Department of Physics, The University at Albany-SUNY, Albany, NY 12222 (United States); Caticha-Ellis, S. [Departamento de Materiais, Faculdade de Engenharia Mecanica, Universidade Estadual de Campinas, Campinas, S.P. 13083-970 (Brazil)] [Departamento de Materiais, Faculdade de Engenharia Mecanica, Universidade Estadual de Campinas, Campinas, S.P. 13083-970 (Brazil)

1996-09-01T23:59:59.000Z

245

Recent progress of the HCN interferometer on J-TEXT tokamak  

Science Conference Proceedings (OSTI)

A multichannel far-infrared HCN laser interferometer has been developed to measure plasma electron density for the J-TEXT tokamak. Initial operation of a seven chords system with 7 cm spacing and a 0.1 ms temporal resolution is described. Density modulation experiments in J-TEXT show that it is possible to obtain information on particle transport by precise measurement of the density perturbation amplitude and phase spatial variation. An optical configuration upgrade has been implemented in order to improve phase resolution.

Gao, L.; Zhuang, G.; Wang Zhijiang; Chen, W.; Chen, J.; Li, Q.; Liu, Y. [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 (China)

2012-10-15T23:59:59.000Z

246

Surpassing the standard quantum limit in an atom interferometer with four-mode entanglement produced from four-wave mixing  

Science Conference Proceedings (OSTI)

We theoretically investigate a scheme for atom interferometry that surpasses the standard quantum limit. A four-wave mixing scheme similar to the recent experiment performed by Pertot et al.[Phys. Rev. Lett. 104, 200402 (2010)] is used to generate subshotnoise correlations between two modes. These two modes are then interfered with the remaining two modes in such a way as to surpass the standard quantum limit, whilst utilizing all of the available atoms. Our scheme can be viewed as using two correlated interferometers. That is, the signal from each interferometer when looked at individually is classical, but there are correlations between the two interferometers that allow for the standard quantum limit to be surpassed.

Haine, S. A. [Australian Research Council Centre of Excellence for Quantum-Atom Optics, University of Queensland, Brisbane, 4072 (Australia); Ferris, A. J. [University of Sherbrooke (Canada)

2011-10-15T23:59:59.000Z

247

Stable single-photon interference in a 1 km fiber-optical Mach-Zehnder interferometer with continuous phase adjustment  

E-Print Network (OSTI)

We experimentally demonstrate stable and user-adjustable single-photon interference in a 1 km long fiber- optical Mach-Zehnder interferometer, using an active phase control system with the feedback provided by a classical laser. We are able to continuously tune the single-photon phase difference between the interferometer arms using a phase modulator, which is synchronized with the gate window of the single-photon detectors. The phase control system employs a piezoelectric fiber stretcher to stabilize the phase drift in the interferometer. A single-photon net visibility of 0.97 is obtained, yielding future possibilities for experimental realizations of quantum repeaters in optical fibers, and violation of Bell's inequalities using genuine energy-time entanglement

Xavier, G B

2011-01-01T23:59:59.000Z

248

Stable single-photon interference in a 1 km fiber-optical Mach-Zehnder interferometer with continuous phase adjustment  

E-Print Network (OSTI)

We experimentally demonstrate stable and user-adjustable single-photon interference in a 1 km long fiber- optical Mach-Zehnder interferometer, using an active phase control system with the feedback provided by a classical laser. We are able to continuously tune the single-photon phase difference between the interferometer arms using a phase modulator, which is synchronized with the gate window of the single-photon detectors. The phase control system employs a piezoelectric fiber stretcher to stabilize the phase drift in the interferometer. A single-photon net visibility of 0.97 is obtained, yielding future possibilities for experimental realizations of quantum repeaters in optical fibers, and violation of Bell's inequalities using genuine energy-time entanglement

G. B. Xavier; J. P. von der Weid

2011-04-14T23:59:59.000Z

249

Optical layout for a 10m Fabry-Pérot Michelson interferometer with tunable stability  

E-Print Network (OSTI)

The sensitivity of high-precision interferometric measurements can be limited by Brownian noise within dielectric mirror coatings. This occurs, for instance, in the optical resonators of gravitational wave detectors where the noise can be reduced by increasing the laser beam size. However, the stability of the resonator and its optical performance often impose a limit on the maximally feasible beam size. In this article we describe the optical design of a 10\\,m Fabry-P\\'erot Michelson interferometer with tunable stability. Our design will allow us to carry out initial commissioning with arm cavities of high stability, while afterwards the arm cavity length can be increased stepwise towards the final, marginally stable configuration. Requiring only minimal hardware changes, with respect to a comparable "static" layout, the proposed technique will not only enable us to explore the stability limits of an optical resonator with realistic mirrors exhibiting inevitable surface imperfections, but also the opportunity to measure coating Brownian noise at frequencies as low as a few hundred Hertz. A detailed optical design of the tunable interferometer is presented and requirements for the optical elements are derived from robustness evaluations.

Christian Gräf; Stefan Hild; Harald Lück; Benno Willke; Kenneth A. Strain; Stefan Goßler; Karsten Danzmann

2011-12-08T23:59:59.000Z

250

Measuring the foaminess of space-time with gravity-wave interferometers  

E-Print Network (OSTI)

By analyzing a gedanken experiment designed to measure the distance $l$ between two spatially separated points, we find that this distance cannot be measured with uncertainty less than $(ll_P^2)^{1/3}$, considerably larger than the Planck scale $l_P$ (or the string scale in string theories), the conventional wisdom uncertainty in distance measurements. This limitation to space-time measurements is interpreted as resulting from quantum fluctuations of space-time itself. Thus, at very short distance scales, space-time is "foamy." This intrinsic foaminess of space-time provides another source of noise in the interferometers. The LIGO/VIRGO and LISA generations of gravity-wave interferometers, through future refinements, are expected to reach displacement noise levels low enough to test our proposed degree of foaminess in the structure of space-time. We also point out a simple connection to the holographic principle which asserts that the number of degrees of freedom of a region of space is bounded by the area of the region in Planck units.

Y. Jack Ng; H. van Dam

1999-06-01T23:59:59.000Z

251

Quantum information technology with Sagnac interferometer: Interaction-free measurement, quantum key distribution and quantum secret sharing  

E-Print Network (OSTI)

The interferometry of single-photon pulses has been used to implement quantum technology systems, like quantum key distribution, interaction-free measurement and some other quantum communication protocols. In most of these implementations, Mach-Zehnder, Michelson and Fabry-Perot interferometers are the most used. In this work we present optical setups for interaction-free measurement, quantum key distribution and quantum secret sharing using the Sagnac interferometer. The proposed setups are described as well the quantum protocols using them are explained.

Wellington Alves de Brito; Rubens Viana Ramos

2007-06-08T23:59:59.000Z

252

At-wavelength characterization of refractive x-ray lenses using a two-dimensional grating interferometer  

SciTech Connect

We report on the application of a two-dimensional hard x-ray grating interferometer to x-ray optics metrology. The interferometer is sensitive to refraction angles in two perpendicular directions with a precision of 10 nrad. It is used to observe the wavefront changes induced by a single parabolic beryllium focusing lens of large radius of curvature. The lens shape is reconstructed and its residual aberrations are analyzed. Its profile differs from an ideal parabolic shape by less than 2 {mu}m or {lambda}/50 at {lambda} = 0.54 A wavelength.

Rutishauser, Simon; David, Christian [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Zanette, Irene [European Synchrotron Radiation Facility, 38043 Grenoble (France); Weitkamp, Timm [Synchrotron Soleil, 91192 Gif-sur-Yvette (France); Donath, Tilman [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Dectris Ltd., 5400 Baden (Switzerland)

2011-11-28T23:59:59.000Z

253

A line-imaging velocity interferometer technique for shock diagnostics without x-ray preheat limitation  

Science Conference Proceedings (OSTI)

A study was conducted with a line-imaging velocity interferometer on sandwich targets at the Shen Guang-III prototype laser facility in China, with the goal of eliminating the preheat effect. A sandwich target structure was used to reduce the x-ray preheat limitation (radiation temperature {approx}170 eV) in a radiative drive shock experiment. With a thick ablator, the preheat effect appeared before the shock arrived at the window. After adding a shield layer of high-Z material on the ablator, x-rays which penetrated the ablator were so weak that the blank-out effect could not be measured. This experiment indicates that the sandwich target may provide a valuable technique in experiments such as equation of state and shock timing for inertial confinement fusion studies.

Wang Feng; Peng Xiaoshi; Liu Shenye; Xu Tao; Mei Lusheng; Jiang Xiaohua; Ding Yongkun [Research Center of Laser Fusion, CAEP, P.O. Box 919-986, Mianyang 621900 (China)

2011-10-15T23:59:59.000Z

254

In-line Mach-Zehnder interferometer composed of microtaper and long-period grating in all-solid photonic bandgap fiber  

Science Conference Proceedings (OSTI)

We report a compact in-line Mach-Zehnder interferometer combining a microtaper with a long-period grating (LPG) in a section of all-solid photonic bandgap fiber. Theoretical and experimental investigations reveal that the interferometer works from the interference between the fundamental core mode and the LP{sub 01} cladding supermodes. The mechanism underlying the mode coupling caused by the microtaper can be attributed to a bandgap-shifting as the fiber diameter is abruptly scaled down. In addition, the interferometer designed to strengthen the coupling ratio of the long-period grating has a promising practical application in the simultaneous measurement of curvature and temperature.

Wu Zhifang [Key Laboratory of Optical Information and Technology, Ministry of Education and Institute of Modern Optics, Nankai University, Tianjin 300071 (China); OPTIMUS, School of Electrical and Electronics Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 637553 (Singapore); Liu Yange; Wang Zhi; Han Tingting; Li Shuo [Key Laboratory of Optical Information and Technology, Ministry of Education and Institute of Modern Optics, Nankai University, Tianjin 300071 (China); Jiang Meng; Ping Shum, Perry [OPTIMUS, School of Electrical and Electronics Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 637553 (Singapore); CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, 50 Nanyang Drive, Border X Block, Level 6, Singapore 637553 (Singapore); Quyen Dinh, Xuan [CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, 50 Nanyang Drive, Border X Block, Level 6, Singapore 637553 (Singapore); Thales Solutions Asia Pte Ltd, R and T Department, 28 Changi North Rise, Singapore 498755 (Singapore)

2012-10-01T23:59:59.000Z

255

Retrieval of Tropospheric Carbon Monoxide Profiles from High-Resolution Interferometer Observations: A New Digital Gas Correlation (DGC)Method and Applications  

Science Conference Proceedings (OSTI)

Global tropospheric carbon monoxide (CO) distributions can be retrieved from observations by spaceborne gas correlation radiometers and high-resolution interferometers. The Measurement of Pollution in the Troposphere (MOPITT) is a gas correlation ...

Jinxue Wang; John C. Gille; Paul L. Bailey; Liwen Pan; David Edwards; James R. Drummond

1999-01-01T23:59:59.000Z

256

Fabrication and characterization of analyzer gratings with high aspect ratios for phase contrast imaging using a Talbot interferometer  

Science Conference Proceedings (OSTI)

In recent years, X-ray imaging based on the differential phase contrast gained more and more attention to be used in X-ray imaging. Among other techniques like crystal-based diffraction and propagation methods, the grating based Talbot interferometry offers an approach measuring phase modulations of X-rays while passing low absorbing objects. The Talbot interferometer yields for highly efficient X-ray imaging signals for hard X-rays with energies above 10 keV. One factor with high impact on the imaging performance of such grating interferometers is the gratings quality. We introduce a fabrication process allowing both, the fabrication of phase modulating and analyzer gratings with high aspect ratios, up to 100. Structural deviations from the optimal geometry of the gratings are investigated and their influence on the obtained image quality is discussed.

Kenntner, Johannes; Altapova, Venera; Grund, Thomas; Pantenburg, Franz Josef; Meiser, Jan; Baumbach, Tilo; Mohr, Juergen [Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76021 Karlsruhe (Germany); Karlsruhe Institute of Technology (KIT), Laboratory for Application of Synchrotron Radiation, 76128 Karlsruhe (Germany); Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76021 Karlsruhe (Germany); Karlsruhe Institute of Technology (KIT), Laboratory for Application of Synchrotron Radiation, 76128 Karlsruhe (Germany); Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76021 Karlsruhe (Germany)

2012-05-17T23:59:59.000Z

257

Optimal combination of signals from co-located gravitational wave interferometers for use in searches for a stochastic background  

E-Print Network (OSTI)

This article derives an optimal (i.e., unbiased, minimum variance) estimator for the pseudo-detector strain for a pair of co-located gravitational wave interferometers (such as the pair of LIGO interferometers at its Hanford Observatory), allowing for possible instrumental correlations between the two detectors. The technique is robust and does not involve any assumptions or approximations regarding the relative strength of gravitational wave signals in the detector pair with respect to other sources of correlated instrumental or environmental noise. An expression is given for the effective power spectral density of the combined noise in the pseudo-detector. This can then be introduced into the standard optimal Wiener filter used to cross-correlate detector data streams in order to obtain an optimal estimate of the stochastic gravitational wave background. In addition, a dual to the optimal estimate of strain is derived. This dual is constructed to contain no gravitational wave signature and can thus be used ...

Lazzarini, A; Fritschel, P; McHugh, M; Regimbau, T; Reilly, K; Romano, J D; Whelan, J T; Whitcomb, S; Whiting, B F

2004-01-01T23:59:59.000Z

258

Fringe jump analysis and electronic corrections for the Tore Supra far infrared interferometer  

SciTech Connect

On the Tore Supra tokamak, the ten-channel far infrared interferometer consists of a double color (119 and 195 {mu}m) system with two detectors for each channel to measure the plasma density. The phase measurement is obtained by combining a 100 kHz shifted reference beam with the probing beam that has crossed the plasma. The achieved precision--a few percent of a fringe--is very good compared with the expected variations due to plasma, which are on the order of several fringes. However, the counting of the fringe variations can be affected when the signal is perturbed by electromagnetic interferences or when it deviates in the presence of strong plasma refraction changes occurring during ICRH breakdowns, pellet injections, or disruptions. This induces a strong decrease in the reliability of the measurement, which is an important concern when the diagnostic is used for density control. We describe in this paper the renewing of the electronics that has been achieved to reduce and correct the number of the so-called fringe jumps. A new zero crossing method for phase measurement is used, together with a field programable gate array semiconductor integration, to measure the phase and activate the algorithm of corrections every 10 {mu}s. Comparisons between a numerical oscilloscope analysis and the corrected acquired data in the case of laboratory amplitude modulation tests and in the case of real plasma perturbations are also discussed.

Gil, C.; Barbuti, A.; Elbeze, D.; Pastor, P.; Philip, J.; Toulouse, L. [CEA, IRFM, F-13108 Saint Paul Lez Durance (France)

2008-10-15T23:59:59.000Z

259

One-photon interferometer for realizing optimal unambiguous discrimination among quantum subsets  

Science Conference Proceedings (OSTI)

With the quantum state filtering as a known example, it has been shown that the unambiguous discrimination between subsets of nonorthogonal quantum states is possible with a certain possibility of success. In present work, besides reconsidering the known case of quantum state filtering, we also ask what happens if parts of the states are shared by both the subsets or if there are more than two subsets. The procedure, which is designed to find the optimal way for quantum set discrimination, contains two steps. For each case, we at first construct a one-photon interferometer (OPI) to realize the unambiguous discrimination in an enlarged Hilbert space according to the Neumark's theorem. The awards from the OPI are double: an optical experiment and the operators in terms of positive operator-valued measures. Then, with the operators from its corresponding OPI and the given a priori probability for each state, we are able to find out the optimal operators which can discriminate the subsets in an optimal way. It is shown that the OPIs, which have been discussed in present work, can be constructed by taking the quantum state filtering as their elementary process. This fact indicates that the problem of quantum set discrimination can be reduced to the known problem of quantum state filtering.

Wu Xiaohua; Yu Shaolan; Zhou Tao [Department of Physics, Sichuan University, Chengdu 610064 (China)

2009-05-15T23:59:59.000Z

260

Observations of the pulsation of the Cepheid l Car with the Sydney University Stellar Interferometer  

E-Print Network (OSTI)

Observations of the southern Cepheid l Car to yield the mean angular diameter and angular pulsation amplitude have been made with the Sydney University Stellar Interferometer (SUSI) at a wavelength of 696 nm. The resulting mean limb-darkened angular diameter is 2.990+-0.017 mas (i.e. +-0.6 per cent) with a maximum-to-minimum amplitude of 0.560+-0.018 mas corresponding to 18.7+-0.6 per cent in the mean stellar diameter. Careful attention has been paid to uncertainties, including those in measurements, in the adopted calibrator angular diameters, in the projected values of visibility squared at zero baseline, and to systematic effects. No evidence was found for a circumstellar envelope at 696 nm. The interferometric results have been combined with radial displacements of the stellar atmosphere derived from selected radial velocity data taken from the literature to determine the distance and mean diameter of l Car. The distance is determined to be 525+-26 pc and the mean radius 169+-8R{solar). Comparison with pu...

Davis, J; Robertson, J G; Ireland, M J; North, J R; Tango, W J; Tuthill, P G

2008-01-01T23:59:59.000Z

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261

Research Highlight  

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

Development and Recent Evaluation of the MT_CKD Model of Continuum Development and Recent Evaluation of the MT_CKD Model of Continuum Absorption Download a printable PDF Submitter: Mlawer, E. J., Atmospheric & Environmental Research, Inc. Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle Journal Reference: Mlawer EJ, VH Payne, J Moncet, JS Delamere, MJ Alvarado, and DD Tobin. 2012. "Development and recent evaluation of the MT_CKD model of continuum absorption." Philosophical Transactions of The Royal Society A, 370, doi: 10.1098/rsta.2011.0295. For seven AERI cases with 4-6 cm PWV: (a) average AERI radiances (black) and corresponding calculations using radiation code with previous version of MT_CKD continuum model (red); (b) residuals between AERI and calculations with older model; (c) residuals after the CO2 continuum in

262

ARM - Publications: Science Team Meeting Documents  

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

New Meteorological Applications Using AERI Thermodynamic Profiling New Meteorological Applications Using AERI Thermodynamic Profiling Feltz, W.F.(a), Howell, H.B.(a), Knuteson, R.O.(a), Mecikalski, J.(b), Bedka, K.(a), Tanamachi, R.L.(c), and Posselt, D.(d), University of Wisconsin SSEC/CIMSS (a), University of Alabama - Huntsville (b), University of Oklahoma (c), Colorado State University (d) The DOE ARM program has supported the development of a robust and operational thermodynamic retrieval algorithm using AERI high spectral resolution infrared radiances. These retrievals of temperature and water vapor have been used for a number of ARM research projects including planetary boundary layer (PBL) large eddy simulation, NWP validation, PBL height estimation, and for investigating the utility of driving SCM/CRM models continuously at the SGP site. New AERIplus retrieval meteorological

263

Use of the ARM Measurement of Spectral Zenith Radiance For Better Understanding Of 3D Cloud-Radiation Processes and Aerosol-Cloud Interaction  

Science Conference Proceedings (OSTI)

Our proposal focuses on cloud-radiation processes in a general 3D cloud situation, with particular emphasis on cloud optical depth and effective particle size. We also focus on zenith radiance measurements, both active and passive. The proposal has three main parts. Part One exploits the �¢����solar-background�¢��� mode of ARM lidars to allow them to retrieve cloud optical depth not just for thin clouds but for all clouds. This also enables the study of aerosol cloud interactions with a single instrument. Part Two exploits the large number of new wavelengths offered by ARM�¢����s zenith-pointing ShortWave Spectrometer (SWS), especially during CLASIC, to develop better retrievals not only of cloud optical depth but also of cloud particle size. We also propose to take advantage of the SWS�¢���� 1 Hz sampling to study the �¢����twilight zone�¢��� around clouds where strong aerosol-cloud interactions are taking place. Part Three involves continuing our cloud optical depth and cloud fraction retrieval research with ARM�¢����s 2NFOV instrument by, first, analyzing its data from the AMF-COPS/CLOWD deployment, and second, making our algorithms part of ARM�¢����s operational data processing.

D. Jui-Yuan Chiu

2010-10-19T23:59:59.000Z

264

Research Highlight  

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

AERI-ER at the SHEBA Ice Station: Far Infrared H2O Continuum AERI-ER at the SHEBA Ice Station: Far Infrared H2O Continuum Submitter: Revercomb, H. E., University of Wisconsin, Madison Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Tobin, D.C., F.A. Best, P.D. Brown, S.A. Clough, R.G. Dedecker, R.G. Ellingson, R.K. Garcia, H.B. Howell, R.O. Knuteson, E.J. Mlawer, H.E. Revercomb, J.F. Short, P.F.W. van Delst, and V.P. Walden, 1999. "Downwelling spectral radiance observations at the SHEBA ice station: Water vapor continuum measurements from 17 to 26μm," JGR 104(D2): 2081-2092 Figure 1. Comparison of clear sky downwelling radiance spectra measured with the University of Wisconsin AERI system at the SGP CART site near Lamont, Oklahoma and with the extended range AERI at the SHEBA Ice Station,

265

Detecting Free-Mass Common-Mode Motion Induced by Incident Gravitational Waves: Testing General Relativity and Source Direction via Fox-Smith and Michelson Interferometers  

E-Print Network (OSTI)

In this paper we show that information on both the differential and common mode free-mass response to a gravitational wave can provide important information on discriminating the direction of the gravitational wave source and between different theories of gravitation. The conventional Michelson interferometer scheme only measures the differential free-mass response. By changing the orientation of the beam splitter, it is possible to configure the detector so it is sensitive to the common-mode of the free-mass motion. The proposed interferometer is an adaptation of the Fox-Smith interferometer. A major limitation to the new scheme is its enhanced sensitivity to laser frequency fluctuations over the conventional, and we propose a method of canceling these fluctuations. The configuration could be used in parallel to the conventional differential detection scheme with a significant sensitivity and bandwidth.

Michael Edmund Tobar; Toshikazu Suzuki; Kazuaki Kuroda

2009-03-29T23:59:59.000Z

266

New quantum gravity effect, dark energy, accelerating universe, black hole and experimental scheme using superfluid Helium and atom interferometer  

E-Print Network (OSTI)

Considerable attention has been focused on Verlinde's recent work, claiming that Newton's gravity is not a fundamental force. In a recent work (arXiv:1012.5858), we give further the logic basis and basic clues to derive the Newton's gravity, inertia law and Einstein's weak equivalence principle. In this work, we show that if the gravity is not a fundamental force, in special case, it could be repulsive when quantum wavepacket effect is considered. This quantum gravity effect leads to several physical effects: (1) It is consistent with the universe with accelerating expansion, if the gravity and quantum effect of the fluctuating 'vacuum' (dark energy) is considered. The role of the cosmological constant is naturally interpreted when the gravity and quantum effect of the whole 'vacuum' background is considered. (2) It leads to new idea about black hole information paradox, no-hair theorem and Hawking radiation. (3) With a sphere full of superfluid Helium, we propose a feasible experimental scheme to test our idea with an atom interferometer placed in the sphere. Our calculations show that the accuracy Delta g/g below 10^(-8) could be used to test our idea, which satisfies the present experimental technique of atom interferometer.

Hongwei Xiong

2011-01-03T23:59:59.000Z

267

Optimal combination of signals from co-located gravitational wave interferometers for use in searches for a stochastic background  

E-Print Network (OSTI)

This article derives an optimal (i.e., unbiased, minimum variance) estimator for the pseudo-detector strain for a pair of co-located gravitational wave interferometers (such as the pair of LIGO interferometers at its Hanford Observatory), allowing for possible instrumental correlations between the two detectors. The technique is robust and does not involve any assumptions or approximations regarding the relative strength of gravitational wave signals in the detector pair with respect to other sources of correlated instrumental or environmental noise. An expression is given for the effective power spectral density of the combined noise in the pseudo-detector. This can then be introduced into the standard optimal Wiener filter used to cross-correlate detector data streams in order to obtain an optimal estimate of the stochastic gravitational wave background. In addition, a dual to the optimal estimate of strain is derived. This dual is constructed to contain no gravitational wave signature and can thus be used as on "off-source" measurement to test algorithms used in the "on-source" observation.

A. Lazzarini; S. Bose; P. Fritschel; M. McHugh; T. Regimbau; K. Reilly; J. D. Romano; J. T. Whelan; S. Whitcomb; B. F. Whiting

2004-03-23T23:59:59.000Z

268

EQUAL OPTICAL PATH BEAM SPLITTERS BY USE OF AMPLITUDE-SPLITTING AND WAVEFRONT-SPLITTING METHODS FOR PENCIL BEAM INTERFEROMETER.  

Science Conference Proceedings (OSTI)

A beam splitter to create two separated parallel beams is a critical unit of a pencil beam interferometer, for example the long trace profiler (LTP). The operating principle of the beam splitter can be based upon either amplitude-splitting (AS) or wavefront-splitting (WS). For precision measurements with the LTP, an equal optical path system with two parallel beams is desired. Frequency drift of the light source in a non-equal optical path system will cause the interference fringes to drift. An equal optical path prism beam splitter with an amplitude-splitting (AS-EBS) beam splitter and a phase shift beam splitter with a wavefront-splitting (WS-PSBS) are introduced. These beam splitters are well suited to the stability requirement for a pencil beam interferometer due to the characteristics of monolithic structure and equal optical path. Several techniques to produce WS-PSBS by hand are presented. In addition, the WS-PSBS using double thin plates, made from microscope cover plates, has great advantages of economy, convenience, availability and ease of adjustment over other beam splitting methods. Comparison of stability measurements made with the AS-EBS, WS-PSBS, and other beam splitters is presented.

QIAN,S.TAKACS,P.

2003-08-03T23:59:59.000Z

269

Calibration of Radiances from Space  

Science Conference Proceedings (OSTI)

The authors compare the performance of broadband radiometers with spectrally dispersed measurements. Spectrally dispersed radiometers may be more accurately calibrated than is possible with broadband filter instruments. They also have a larger ...

Richard Goody; Robert Haskins

1998-04-01T23:59:59.000Z

270

An AC phase measuring interferometer for measuring dn/dT of fused silica and calcium fluoride at 193 nm  

Science Conference Proceedings (OSTI)

A novel method for the measurement of the change in index of refraction vs. temperature (dn/dT) of fused silica and calcium fluoride at the 193 nm wavelength has been developed in support of thermal modeling efforts for the development of 193 nm-based photolithographic exposure tools. The method, based upon grating lateral shear interferometry, uses a transmissive linear grating to divide a 193 nm laser beam into several beam paths by diffraction which propagate through separate identical material samples. One diffracted order passing through one sample overlaps the undiffracted beam from a second sample and forms interference fringes dependent upon the optical path difference between the two samples. Optical phase delay due to an index change from heating one of the samples causes the interference fringes to change sinusoidally with phase. The interferometer also makes use of AC phase measurement techniques through lateral translation of the grating. Results for several samples of fused silica and calcium fluoride are demonstrated.

Shagam, R.N.

1998-09-01T23:59:59.000Z

271

Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz  

E-Print Network (OSTI)

A stochastic background of gravitational waves is expected to arise from a superposition of many incoherent sources of gravitational waves, of either cosmological or astrophysical origin. This background is a target for the current generation of ground-based detectors. In this article we present the first joint search for a stochastic background using data from the LIGO and Virgo interferometers. In a frequency band of 600-1000 Hz, we obtained a 95% upper limit on the amplitude of $\\Omega_{\\rm GW}(f) = \\Omega_3 (f/900 \\mathrm{Hz})^3$, of $\\Omega_3 < 0.33$, assuming a value of the Hubble parameter of $h_{100}=0.72$. These new limits are a factor of seven better than the previous best in this frequency band.

J. Abadie; B. P. Abbott; R. Abbott; T. D. Abbott; M. Abernathy; T. Accadia; F. Acernese; C. Adams; R. Adhikari; C. Affeldt; M. Agathos; K. Agatsuma; P. Ajith; B. Allen; E. Amador Ceron; D. Amariutei; S. B. Anderson; W. G. Anderson; K. Arai; M. A. Arain; M. C. Araya; S. M. Aston; P. Astone; D. Atkinson; P. Aufmuth; C. Aulbert; B. E. Aylott; S. Babak; P. Baker; G. Ballardin; S. Ballmer; J. C. B. Barayoga; D. Barker; F. Barone; B. Barr; L. Barsotti; M. Barsuglia; M. A. Barton; I. Bartos; R. Bassiri; M. Bastarrika; A. Basti; J. Batch; J. Bauchrowitz; Th. S. Bauer; M. Bebronne; D. Beck; B. Behnke; M. Bejger; M. G. Beker; A. S. Bell; A. Belletoile; I. Belopolski; M. Benacquista; J. M. Berliner; A. Bertolini; J. Betzwieser; N. Beveridge; P. T. Beyersdorf; I. A. Bilenko; G. Billingsley; J. Birch; R. Biswas; M. Bitossi; M. A. Bizouard; E. Black; J. K. Blackburn; L. Blackburn; D. Blair; B. Bland; M. Blom; O. Bock; T. P. Bodiya; C. Bogan; R. Bondarescu; F. Bondu; L. Bonelli; R. Bonnand; R. Bork; M. Born; V. Boschi; S. Bose; L. Bosi; B. Bouhou; S. Braccini; C. Bradaschia; P. R. Brady; V. B. Braginsky; M. Branchesi; J. E. Brau; J. Breyer; T. Briant; D. O. Bridges; A. Brillet; M. Brinkmann; V. Brisson; M. Britzger; A. F. Brooks; D. A. Brown; T. Bulik; H. J. Bulten; A. Buonanno; J. Burguet--Castell; D. Buskulic; C. Buy; R. L. Byer; L. Cadonati; G. Cagnoli; E. Calloni; J. B. Camp; P. Campsie; J. Cannizzo; K. Cannon; B. Canuel; J. Cao; C. D. Capano; F. Carbognani; L. Carbone; S. Caride; S. Caudill; M. Cavaglià; F. Cavalier; R. Cavalieri; G. Cella; C. Cepeda; E. Cesarini; O. Chaibi; T. Chalermsongsak; P. Charlton; E. Chassande-Mottin; S. Chelkowski; W. Chen; X. Chen; Y. Chen; A. Chincarini; A. Chiummo; H. Cho; J. Chow; N. Christensen; S. S. Y. Chua; C. T. Y. Chung; S. Chung; G. Ciani; D. E. Clark; J. Clark; J. H. Clayton; F. Cleva; E. Coccia; P. -F. Cohadon; C. N. Colacino; J. Colas; A. Colla; M. Colombini; A. Conte; R. Conte; D. Cook; T. R. Corbitt; M. Cordier; N. Cornish; A. Corsi; C. A. Costa; M. Coughlin; J. -P. Coulon; P. Couvares; D. M. Coward; M. Cowart; D. C. Coyne; J. D. E. Creighton; T. D. Creighton; A. M. Cruise; A. Cumming; L. Cunningham; E. Cuoco; R. M. Cutler; K. Dahl; S. L. Danilishin; R. Dannenberg; S. D'Antonio; K. Danzmann; V. Dattilo; B. Daudert; H. Daveloza; M. Davier; E. J. Daw; R. Day; T. Dayanga; R. De Rosa; D. DeBra; G. Debreczeni; W. Del Pozzo; M. del Prete; T. Dent; V. Dergachev; R. DeRosa; R. DeSalvo; S. Dhurandhar; L. Di Fiore; A. Di Lieto; I. Di Palma; M. Di Paolo Emilio; A. Di Virgilio; M. Díaz; A. Dietz; F. Donovan; K. L. Dooley; M. Drago; R. W. P. Drever; J. C. Driggers; Z. Du; J. -C. Dumas; T. Eberle; M. Edgar; M. Edwards; A. Effler; P. Ehrens; G. Endr\\Hoczi; R. Engel; T. Etzel; K. Evans; M. Evans; T. Evans; M. Factourovich; V. Fafone; S. Fairhurst; Y. Fan; B. F. Farr; D. Fazi; H. Fehrmann; D. Feldbaum; F. Feroz; I. Ferrante; F. Fidecaro; L. S. Finn; I. Fiori; R. P. Fisher; R. Flaminio; M. Flanigan; S. Foley; E. Forsi; L. A. Forte; N. Fotopoulos; J. -D. Fournier; J. Franc; S. Frasca; F. Frasconi; M. Frede; M. Frei; Z. Frei; A. Freise; R. Frey; T. T. Fricke; D. Friedrich; P. Fritschel; V. V. Frolov; M. -K. Fujimoto; P. J. Fulda; M. Fyffe; J. Gair; M. Galimberti; L. Gammaitoni; J. Garcia; F. Garufi; M. E. Gáspár; G. Gemme; R. Geng; E. Genin; A. Gennai; L. Á. Gergely; S. Ghosh; J. A. Giaime; S. Giampanis; K. D. Giardina; A. Giazotto; S. Gil; C. Gill; J. Gleason; E. Goetz; L. M. Goggin; G. González; M. L. Gorodetsky; S. Goßler; R. Gouaty; C. Graef; P. B. Graff; M. Granata; A. Grant; S. Gras; C. Gray; N. Gray; R. J. S. Greenhalgh; A. M. Gretarsson; C. Greverie; R. Grosso; H. Grote; S. Grunewald; G. M. Guidi; R. Gupta; E. K. Gustafson; R. Gustafson; T. Ha; J. M. Hallam; D. Hammer; G. Hammond; J. Hanks; C. Hanna; J. Hanson; J. Harms; G. M. Harry; I. W. Harry; E. D. Harstad; M. T. Hartman; K. Haughian; K. Hayama; J. -F. Hayau; J. Heefner; A. Heidmann; M. C. Heintze; H. Heitmann; P. Hello; M. A. Hendry; I. S. Heng; A. W. Heptonstall; V. Herrera; M. Hewitson; S. Hild; D. Hoak; K. A. Hodge; K. Holt; M. Holtrop; T. Hong; S. Hooper; D. J. Hosken; J. Hough; E. J. Howell; B. Hughey; S. Husa; S. H. Huttner; R. Inta; T. Isogai; A. Ivanov; K. Izumi; M. Jacobson; E. James; Y. J. Jang; P. Jaranowski; E. Jesse; W. W. Johnson; D. I. Jones; G. Jones; R. Jones; L. Ju; P. Kalmus; V. Kalogera; S. Kandhasamy; G. Kang; J. B. Kanner; R. Kasturi; E. Katsavounidis; W. Katzman; H. Kaufer; K. Kawabe; S. Kawamura; F. Kawazoe; D. Kelley; W. Kells; D. G. Keppel; Z. Keresztes; A. Khalaidovski; F. Y. Khalili; E. A. Khazanov; B. Kim; C. Kim; H. Kim; K. Kim; N. Kim; Y. -M. Kim; P. J. King; D. L. Kinzel; J. S. Kissel; S. Klimenko; K. Kokeyama; V. Kondrashov; S. Koranda; W. Z. Korth; I. Kowalska; D. Kozak; O. Kranz; V. Kringel; S. Krishnamurthy; B. Krishnan; A. Królak; G. Kuehn; R. Kumar; P. Kwee; P. K. Lam

2011-12-21T23:59:59.000Z

272

Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz  

E-Print Network (OSTI)

A stochastic background of gravitational waves is expected to arise from a superposition of many incoherent sources of gravitational waves, of either cosmological or astrophysical origin. This background is a target for the current generation of ground-based detectors. In this article we present the first joint search for a stochastic background using data from the LIGO and Virgo interferometers. In a frequency band of 600-1000 Hz, we obtained a 95% upper limit on the amplitude of $\\Omega_{\\rm GW}(f) = \\Omega_3 (f/900 \\mathrm{Hz})^3$, of $\\Omega_3 < 0.33$, assuming a value of the Hubble parameter of $h_{100}=0.72$. These new limits are a factor of seven better than the previous best in this frequency band.

Abadie, J; Abbott, R; Abbott, T D; Abernathy, M; Accadia, T; Acernese, F; Adams, C; Adhikari, R; Affeldt, C; Agathos, M; Agatsuma, K; Ajith, P; Allen, B; Ceron, E Amador; Amariutei, D; Anderson, S B; Anderson, W G; Arai, K; Arain, M A; Araya, M C; Aston, S M; Astone, P; Atkinson, D; Aufmuth, P; Aulbert, C; Aylott, B E; Babak, S; Baker, P; Ballardin, G; Ballmer, S; Baragoya, J C B; Barker, D; Barone, F; Barr, B; Barsotti, L; Barsuglia, M; Barton, M A; Bartos, I; Bassiri, R; Bastarrika, M; Basti, A; Batch, J; Bauchrowitz, J; Bauer, Th S; Bebronne, M; Beck, D; Behnke, B; Bejger, M; Beker, M G; Bell, A S; Belletoile, A; Belopolski, I; Benacquista, M; Berliner, J M; Bertolini, A; Betzwieser, J; Beveridge, N; Beyersdorf, P T; Bilenko, I A; Billingsley, G; Birch, J; Biswas, R; Bitossi, M; Bizouard, M A; Black, E; Blackburn, J K; Blackburn, L; Blair, D; Bland, B; Blom, M; Bock, O; Bodiya, T P; Bogan, C; Bondarescu, R; Bondu, F; Bonelli, L; Bonnand, R; Bork, R; Born, M; Boschi, V; Bose, S; Bosi, L; Bouhou, B; Braccini, S; Bradaschia, C; Brady, P R; Braginsky, V B; Branchesi, M; Brau, J E; Breyer, J; Briant, T; Bridges, D O; Brillet, A; Brinkmann, M; Brisson, V; Britzger, M; Brooks, A F; Brown, D A; Bulik, T; Bulten, H J; Buonanno, A; Burguet--Castell, J; Buskulic, D; Buy, C; Byer, R L; Cadonati, L; Cagnoli, G; Calloni, E; Camp, J B; Campsie, P; Cannizzo, J; Cannon, K; Canuel, B; Cao, J; Capano, C D; Carbognani, F; Carbone, L; Caride, S; Caudill, S; Cavaglià, M; Cavalier, F; Cavalieri, R; Cella, G; Cepeda, C; Cesarini, E; Chaibi, O; Chalermsongsak, T; Charlton, P; Chassande-Mottin, E; Chelkowski, S; Chen, W; Chen, X; Chen, Y; Chincarini, A; Chiummo, A; Cho, H; Chow, J; Christensen, N; Chua, S S Y; Chung, C T Y; Chung, S; Ciani, G; Clark, D E; Clark, J; Clayton, J H; Cleva, F; Coccia, E; Cohadon, P -F; Colacino, C N; Colas, J; Colla, A; Colombini, M; Conte, A; Conte, R; Cook, D; Corbitt, T R; Cordier, M; Cornish, N; Corsi, A; Costa, C A; Coughlin, M; Coulon, J -P; Couvares, P; Coward, D M; Cowart, M; Coyne, D C; Creighton, J D E; Creighton, T D; Cruise, A M; Cumming, A; Cunningham, L; Cuoco, E; Cutler, R M; Dahl, K; Danilishin, S L; Dannenberg, R; D'Antonio, S; Danzmann, K; Dattilo, V; Daudert, B; Daveloza, H; Davier, M; Daw, E J; Day, R; Dayanga, T; De Rosa, R; DeBra, D; Debreczeni, G; Del Pozzo, W; del Prete, M; Dent, T; Dergachev, V; DeRosa, R; DeSalvo, R; Dhurandhar, S; Di Fiore, L; Di Lieto, A; Di Palma, I; Emilio, M Di Paolo; Di Virgilio, A; Díaz, M; Dietz, A; Donovan, F; Dooley, K L; Drago, M; Drever, R W P; Driggers, J C; Du, Z; Dumas, J -C; Eberle, T; Edgar, M; Edwards, M; Effler, A; Ehrens, P; Endr?czi, G; Engel, R; Etzel, T; Evans, K; Evans, M; Evans, T; Factourovich, M; Fafone, V; Fairhurst, S; Fan, Y; Farr, B F; Fazi, D; Fehrmann, H; Feldbaum, D; Feroz, F; Ferrante, I; Fidecaro, F; Finn, L S; Fiori, I; Fisher, R P; Flaminio, R; Flanigan, M; Foley, S; Forsi, E; Forte, L A; Fotopoulos, N; Fournier, J -D; Franc, J; Frasca, S; Frasconi, F; Frede, M; Frei, M; Frei, Z; Freise, A; Frey, R; Fricke, T T; Friedrich, D; Fritschel, P; Frolov, V V; Fujimoto, M -K; Fulda, P J; Fyffe, M; Gair, J; Galimberti, M; Gammaitoni, L; Garcia, J; Garufi, F; Gáspár, M E; Gemme, G; Geng, R; Genin, E; Gennai, A; Gergely, L Á; Ghosh, S; Giaime, J A; Giampanis, S; Giardina, K D; Giazotto, A; Gil, S; Gill, C; Gleason, J; Goetz, E; Goggin, L M; González, G; Gorodetsky, M L; Goßler, S; Gouaty, R; Graef, C; Graff, P B; Granata, M; Grant, A; Gras, S; Gray, C; Gray, N; Greenhalgh, R J S; Gretarsson, A M; Greverie, C; Grosso, R; Grote, H; Grunewald, S; Guidi, G M; Gupta, R; Gustafson, E K; Gustafson, R; Ha, T; Hallam, J M; Hammer, D; Hammond, G; Hanks, J; Hanna, C; Hanson, J; Harms, J; Harry, G M; Harry, I W; Harstad, E D; Hartman, M T; Haughian, K; Hayama, K; Hayau, J -F; Heefner, J; Heidmann, A; Heintze, M C; Heitmann, H; Hello, P; Hendry, M A; Heng, I S; Heptonstall, A W; Herrera, V; Hewitson, M; Hild, S; Hoak, D; Hodge, K A; Holt, K; Holtrop, M; Hong, T; Hooper, S; Hosken, D J; Hough, J; Howell, E J; Hughey, B; Husa, S; Huttner, S H; Inta, R; Isogai, T; Ivanov, A; Izumi, K; Jacobson, M; James, E; Jang, Y J; Jaranowski, P; Jesse, E; Johnson, W W; Jones, D I; Jones, G; Jones, R; Ju, L; Kalmus, P; Kalogera, V; Kandhasamy, S; Kang, G; Kanner, J B; Kasturi, R; Katsavounidis, E; Katzman, W; Kaufer, H; Kawabe, K; Kawamura, S; Kawazoe, F; Kelley, D; Kells, W; Keppel, D G; Keresztes, Z; Khalaidovski, A; Khalili, F Y; Khazanov, E A; Kim, B; Kim, C; Kim, H; Kim, K; Kim, N; Kim, Y -M; King, P J; Kinzel, D L; Kissel, J S; Klimenko, S; Kokeyama, K; Kondrashov, V; Koranda, S; Korth, W Z; Kowalska, I; Kozak, D; Kranz, O; Kringel, V; Krishnamurthy, S; Krishnan, B; Królak, A; Kuehn, G; Kumar, R; Kwee, P; Lam, P K; Landry, M; Lantz, B; Lastzka, N; Lawrie, C; Lazzarini, A; Leaci, P; Lee, C H; Lee, H K; Lee, H M; Leong, J R; Leonor, I; Leroy, N; Letendre, N

2011-01-01T23:59:59.000Z

273

Demonstration of a real-time interferometer as a bunch-length monitor in a high-current electron beam accelerator  

SciTech Connect

A real-time interferometer (RTI) has been developed to monitor the bunch length of an electron beam in an accelerator. The RTI employs spatial autocorrelation, reflective optics, and a fast response pyro-detector array to obtain a real-time autocorrelation trace of the coherent radiation from an electron beam thus providing the possibility of online bunch-length diagnostics. A complete RTI system has been commissioned at the A0 photoinjector facility to measure sub-mm bunches at 13 MeV. Bunch length variation (FWHM) between 0.8 ps ({approx}0.24 mm) and 1.5 ps ({approx}0.45 mm) has been measured and compared with a Martin-Puplett interferometer and a streak camera. The comparisons show that RTI is a viable, complementary bunch length diagnostic for sub-mm electron bunches.

Thangaraj, J.; Thurman-Keup, R.; Ruan, J.; Johnson, A. S.; Lumpkin, A.; Santucci, J.; Maxwell, T. [Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Andonian, G. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States); RadiaBeam Technologies, Santa Monica, California 90404 (United States); Murokh, A.; Ruelas, M.; Ovodenko, A. [RadiaBeam Technologies, Santa Monica, California 90404 (United States)

2012-04-15T23:59:59.000Z

274

Demonstration of a real-time interferometer as a bunch-lenght monitor in a high-current electron beam accelerator  

Science Conference Proceedings (OSTI)

A real-time interferometer (RTI) has been developed to monitor the bunch length of an electron beam in an accelerator. The RTI employs spatial autocorrelation, reflective optics, and a fast response pyro-detector array to obtain a real-time autocorrelation trace of the coherent radiation from an electron beam thus providing the possibility of online bunch-length diagnostics. A complete RTI system has been commissioned at the A0 photoinjector facility to measure sub-mm bunches at 13 MeV. Bunch length variation (FWHM) between 0.8 ps (-0.24 mm) and 1.5 ps (-0.45 mm) has been measured and compared with a Martin-Puplett interferometer and a streak camera. The comparisons show that RTI is a viable, complementary bunch length diagnostic for sub-mm electron bunches.

Thangaraj, J.; Thurman-Keup, R.; Ruan, J.; Johnson, A.S.; Lumpkin, A; Santucci, J.; Maxwell, T.; /Fermilab; Andonian, G.; /UCLA /RadiaBeam Tech.; Murokh, A.; Ruelas, M.; Ovodenko, A.; /RadiaBeam Tech.

2012-03-01T23:59:59.000Z

275

Research Highlight  

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

A Downwelling Infrared Radiance Climatology for the ARM Southern Great A Downwelling Infrared Radiance Climatology for the ARM Southern Great Plains Site Download a printable PDF Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Gero, J., University of Wisconsin Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle Journal Reference: Turner DD and PJ Gero. 2011. "Downwelling infrared radiance temperature climatology for the Atmospheric Radiation Measurement Southern Great Plains site." Journal of Geophysical Research - Atmospheres, 116, D08212, doi:10.1029/2010JD015135. The distribution of downwelling 10-micron infrared radiance observed at the SGP site by the AERI from June 1996 to May 2010, separated into all-sky (all samples) and the three distinct sky classifications.

276

White light velocity interferometer  

DOE Patents (OSTI)

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

Erskine, D.J.

1997-06-24T23:59:59.000Z

277

White light velocity interferometer  

DOE Patents (OSTI)

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.

Erskine, David J. (Oakland, CA)

1997-01-01T23:59:59.000Z

278

White light velocity interferometer  

DOE Patents (OSTI)

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.

Erskine, David J. (Oakland, CA)

1999-01-01T23:59:59.000Z

279

White light velocity interferometer  

DOE Patents (OSTI)

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

Erskine, D.J.

1999-06-08T23:59:59.000Z

280

ARM - Publications: Science Team Meeting Documents  

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

High Latitude Cloud Microphysical Properties from FTIR Data High Latitude Cloud Microphysical Properties from FTIR Data Lubin, D., Scripps Institution of Oceanography Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The ARM AERI instruments record downwelling radiance spectra with sufficient radiometric calibration to enable the retrieval of important cloud microphysical properties. This poster will describe how radiative transfer simulations that include cloud thermodynamic phase (liquid water, ice, mixed phase) can be utilized with Fourier Transform Infrared (FTIR) spectroradiometer data. The presence of the ice phase in cloud alters the slope of the brightness temperature spectrum between 800 - 1200 inverse centimeters, such that ice can often be detected. The AERI near infrared channel also may have potential for cloud phase as discrimination.

Note: This page contains sample records for the topic "radiance interferometer aeri" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


281

Research Highlight  

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

ARM Science Applications of AERI Measurements ARM Science Applications of AERI Measurements Submitter: Smith, W. L., NASA - Langley Research Center Area of Research: Radiation Processes Working Group(s): Cloud Modeling Journal Reference: DeSlover, D. H. 1996. Analysis of Visible and Infrared Cirrus Cloud Optical Properties Using High Spectral Resolution Remote Sensing, M.S. Thesis, University of Wisconsin - Madison. Ho, S.-P. 1997. Atmospheric Profiles From Simultaneous Observations of Upwelling and Downwelling Spectral Radiance, Ph.D. Thesis, University of Wisconsin - Madison. Knuteson, R. O., F. A. Best, H. B. Howell, P. Minnett, H. E. Revercomb, W. L. Smith. 1997. "High Spectral Resolution Infrared Observations at the Ocean-Atmosphere Interface in the Tropical Western Pacific using a Marine

282

1  

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

Analysis of the AERI/LBLRTM QME Analysis of the AERI/LBLRTM QME D. C. Tobin, D. D. Turner, H. E. Revercomb, and R. O. Knuteson University of Wisconsin-Madison Madison Wisconsin S. A. Clough, and K. Cady-Pereira Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts Introduction A Quality Measurement Experiment (QME) comparing clear-sky downwelling longwave radiance at the surface from observations and model calculations has been performed by the Atmospheric Radiation Measurement (ARM) Program for many years (e.g., Brown et al. 1995; Clough et al. 1996). This QME has been used to (1) validate and improve absorption models and spectral line parameters used within the Line-by-Line Radiative Transfer Model (LBLRTM), (2) assess the ability to define the atmospheric

283

Section 81  

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

Atmospheric Emitted Radiance Interferometer Part II: Water Vapor and Atmospheric Aerosols B.A. Whitney, H.E. Revercomb, R.O. Knuteson, F.A. Best, and W.L. Smith University of...

284

Building Energy Software Tools Directory: Radiance  

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

plots and contours, visual comfort levels, photograph-quality images and video animations. Computer Platform UNIX-compatible workstation, e.g. Sun, Silicon Graphics, Hewlett...

285

Precomputed radiance transfer: theory and practice  

Science Conference Proceedings (OSTI)

Interactive rendering of realistic objects under general lighting models poses three principal challenges. Handling complex light transport phenomena like shadows, inter-reflections, caustics and sub-surface scattering is difficult to do in real time. ...

Jan Kautz; Peter-Pike Sloan; Jaakko Lehtinen

2005-07-01T23:59:59.000Z

286

Zenith Radiance Retrieval of Cloud Properties  

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

retrievals of cloud properties retrievals of cloud properties from the AMF/COPS campaign Preliminary retrievals of cloud properties from the AMF/COPS campaign Christine Chiu, UMBC/JCET Alexander Marshak, GSFC Yuri Knyazikhin, Boston University Warren Wiscombe, GSFC Christine Chiu, UMBC/JCET Alexander Marshak, GSFC Yuri Knyazikhin, Boston University Warren Wiscombe, GSFC The cloud optical properties of interest are: The cloud optical properties of interest are: * Cloud optical depth τ - the great unknown * Radiative cloud fraction * Cloud effective drop size, r eff * Cloud optical depth τ - the great unknown * Radiative cloud fraction * Cloud effective drop size, r eff τ = 3 2 LWP r eff r eff in μm, LWP in g/m 2 The 2-ch narrow-field-of-view radiometer (2NFOV) The 2-ch narrow-field-of-view radiometer

287

Reflected Solar Radiances from Regional Scale Scenes  

Science Conference Proceedings (OSTI)

A set of bi-directional reflectance models is presented for various atmospheric scene types. The models were composited from data collected from an aircraft platform in May-July 1979 during Summer MONEX. The space scale of the composited models ...

John M. Davis; Stephen K. Cox

1982-11-01T23:59:59.000Z

288

Ground-Based Infrared Remote Sensing of Cloud Properties over the Antarctic Plateau. Part I: Cloud-Base Heights  

Science Conference Proceedings (OSTI)

A Fourier-transform interferometer, operated throughout 1992 at South Pole Station, measured downward spectral longwave radiance from 550 to 1500 cm?1 (7–18 ?m) at a resolution of 1 cm?1. Radiance measurements were usually made twice daily, ...

Ashwin Mahesh; Von P. Walden; Stephen G. Warren

2001-07-01T23:59:59.000Z

289

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

290

NAVY PRECISION OPTICAL INTERFEROMETER OBSERVATIONS OF THE EXOPLANET HOST {kappa} CORONAE BOREALIS AND THEIR IMPLICATIONS FOR THE STAR'S AND PLANET'S MASSES AND AGES  

SciTech Connect

We used the Navy Precision Optical Interferometer to measure the limb-darkened angular diameter of the exoplanet host star {kappa} CrB and obtained a value of 1.543 {+-} 0.009 mas. We calculated its physical radius (5.06 {+-} 0.04 R{sub Sun }) and used photometric measurements from the literature with our diameter to determine {kappa} CrB's effective temperature (4788 {+-} 17 K) and luminosity (12.13 {+-} 0.09 L{sub Sun }). We then placed the star on an Hertzsprung-Russell diagram to ascertain the star's age (3.42{sup +0.32}{sub -0.25} Gyr) and mass (1.47 {+-} 0.04 M{sub Sun }) using a metallicity of [Fe/H] = +0.15. With this mass, we calculated the system's mass function with the orbital elements from a variety of sources, which produced a range of planetary masses: m{sub p}sin i = 1.61-1.88 M{sub Jup}. We also updated the extent of the habitable zone for the system using our new temperature.

Baines, Ellyn K.; Armstrong, J. Thomas [Remote Sensing Division, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375 (United States); Van Belle, Gerard T., E-mail: ellyn.baines@nrl.navy.mil [Lowell Observatory, Flagstaff, AZ 86001 (United States)

2013-07-01T23:59:59.000Z

291

Spiral inflow feeding the nuclear starburst in M83, observed in H-alpha emission with the GHAFAS Fabry-Perot interferometer  

E-Print Network (OSTI)

We present observations of the nearby barred starburst galaxy, M83 (NGC5236), with the new Fabry-Perot interferometer GHAFAS mounted on the 4.2 meter William Herschel Telescope on La Palma. The unprecedented high resolution observations, of 16 pc/FWHM, of the H-alpha-emitting gas cover the central two kpc of the galaxy. The velocity field displays the dominant disk rotation with signatures of gas inflow from kpc scales down to the nuclear regions. At the inner Inner Lindblad Resonance radius of the main bar and centerd at the dynamical center of the main galaxy disk, a nuclear $5.5 (\\pm 0.9) \\times 10^8 M_\\odot$ rapidly rotating disk with scale length of $60 \\pm 20$ pc has formed. The nuclear starburst is found in the vicinity as well as inside this nuclear disk, and our observations confirm that gas spirals in from the outer parts to feed the nuclear starburst, giving rise to several star formation events at different epochs, within the central 100 pc radius of M83.

Kambiz Fathi; John E. Beckman; Andreas A. Lundgren; Claude Carignan; Olivier Hernandez; Philippe Amram; Philippe Balard; Jacques Boulesteix; Jean-Luc Gach; Johan H. Knapen; Monica Relaño

2007-12-05T23:59:59.000Z

292

Robust, accurate, and non-contacting vibration measurement systems: Summary of comparison measurements of the robust laser interferometer and typical accelerometer systems. Volume 1  

Science Conference Proceedings (OSTI)

Epoch Engineering, Incorporated (EEI) has completed a series of vibration measurements comparing their newly-developed Robust Laser Interferometer (RLI) with accelerometer-based instrumentation systems. EEI has successfully demonstrated, on several pieces of commonplace machinery, that non-contact, line-of-sight measurements are practical and yield results equal to or, in some cases, better than customary field implementations of accelerometers. The demonstration included analysis and comparison of such phenomena as nonlinearity, transverse sensitivity, harmonics, and signal-to-noise ratio. Fast Fourier Transformations were performed on the accelerometer and the laser system outputs to provide a comparison basis. The RLI was demonstrated, within the limits of the task, to be a viable, line-of-sight, non-contact alternative to accelerometer systems. Several different kinds of machinery were instrumented and compared, including a small pump, a gear-driven cement mixer, a rotor kit, and two small fans. Known machinery vibration sources were verified and RLI system output file formats were verified to be compatible with commercial computer programs used for vibration monitoring and trend analysis. The RLI was also observed to be less subject to electromagnetic interference (EMI) and more capable at very low frequencies.

Goodenow, T.C.; Shipman, R.L.; Holland, H.M. [Epoch Engineering, Inc., Gaithersburg, MD (United States)

1995-06-01T23:59:59.000Z

293

Robust, accurate, and non-contacting vibration measurement systems: Supplemental appendices presenting comparison measurements of the robust laser interferometer and typical accelerometer systems. Volume 2  

Science Conference Proceedings (OSTI)

Epoch Engineering, Incorporated (EEI) has completed a series of vibration measurements comparing their newly-developed Robust Laser Interferometer (RLI) with accelerometer-based instrumentation systems. EEI has successfully demonstrated, on several pieces of commonplace machinery, that non-contact, line-of-sight measurements are practical and yield results equal to or, in some cases, better than customary field implementations of accelerometers. The demonstration included analysis and comparison of such phenomena as nonlinearity, transverse sensitivity, harmonics, and signal-to-noise ratio. Fast Fourier Transformations were performed on the accelerometer and the laser system outputs to provide a comparison basis. The RLI was demonstrated, within the limits o the task, to be a viable, line-of-sight, non-contact alternative to accelerometer systems. Several different kinds of machinery were instrumented and. compared, including a small pump, a gear-driven cement mixer, a rotor kit, and two small fans. Known machinery vibration sources were verified and RLI system output file formats were verified to be compatible with commercial computer programs used for vibration monitoring and trend analysis. The RLI was also observed to be less subject to electromagnetic interference (EMI) and more capable at very low frequencies. This document, Volume 2, provides the appendices to this report.

Goodenow, T.C.; Shipman, R.L.; Holland, H.M. [Epoch Engineering, Inc., Gaithersburg, MD (United States)

1995-06-01T23:59:59.000Z

294

1  

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

Retrieving Aerosols from the Atmospheric Emitted Retrieving Aerosols from the Atmospheric Emitted Radiance Interferometer: Can it be Done? L. Moy, H.E. Revercomb, and R.O. Knuteson Cooperative Institute for Meteorological Satellite Studies (CIMSS) Madison, Wisconsin D.D. Turner and E. Kassianov Pacific Northwest National Laboratory Richland, Washington The Atmospheric Emitted Radiance Interferometer observes downwelling infrared radiance from 3-19 μm that may enable better retrievals of aerosol optical and physical properties. Theoretical study suggests that the Atmospheric Emitted Radiance Interferometer's infrared aerosol signal is strong enough to overcome instrument noise constraints and uncertainties in the water vapor, especially in the 3-4 μm band where scattering dominates the observed signal during the daytime. Unlike other aerosol

295

Final Scientific/Technical Report Grant title: Use of ARM Measurements of Spectral Zenith Radiance for Better Understanding of 3D Cloud-Radiation Processes and Aerosol-Cloud Interaction This is a collaborative project with the NASA GSFC project of Dr. A. Marshak and W. Wiscombe (PIs). This report covers BU activities from February 2011 to June 2011 and BU "Â?no-cost extension" activities from June 2011 to June 2012. This report summarizes results that complement a final technical report submitted by the PIs in 2011.  

SciTech Connect

Main results are summarized for work in these areas: spectrally-invariant approximation within atmospheric radiative transfer; spectral invariance of single scattering albedo for water droplets and ice crystals at weakly absorbing wavelengths; seasonal changes in leaf area of Amazon forests from leaf flushing and abscission; and Cloud droplet size and liquid water path retrievals from zenith radiance measurements.

Knyazikhin, Y

2012-09-10T23:59:59.000Z

296

Tobin-DC  

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

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

297

The NIST Length Scale Interferometer  

Science Conference Proceedings (OSTI)

... This approach to measurements was pioneered by Churchill ... as part of this study of systematic effects but ... the stand- ing wave train between the ...

2013-10-22T23:59:59.000Z

298

Neutron Interferometer and Optics Facility  

Science Conference Proceedings (OSTI)

... measurements are used to study the magnetic, nuclear, and structural properties of materials, as well fundamental questions in quantum physics. ...

299

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

300

Scene Radiance–Dependent Intersatellite Biases of HIRS Longwave Channels  

Science Conference Proceedings (OSTI)

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

Lei Shi; John J. Bates; Changyong Cao

2008-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Modtran radiance modeling of multi-angle worldview-2 imagery .  

E-Print Network (OSTI)

??The WorldView-2 satellite, launched in 2010 by DigitalGlobe, provides researchers with the ability to collect high resolution, multi-angle, 8-band multispectral imagery. This offers a unique… (more)

Marshall, Samuel I.

2013-01-01T23:59:59.000Z

302

The Spectral Radiance Experiment (SPECTRE): Project Description and Sample Results  

Science Conference Proceedings (OSTI)

The fundamental climatic role of radiative processes has spurred the development of increasingly sophisticated models of radiative transfer in the earth-atmosphere system. Since the basic physics of radiative transfer is rather well known, this ...

Robert G. Ellingson; Warren J. Wiscombe

1996-09-01T23:59:59.000Z

303

Surface Albedo over the Sahel from METEOSAT Radiances  

Science Conference Proceedings (OSTI)

A method to estimate surface albedo in the African Sahel is proposed and discussed. This method, which uses METEOSAT imagery and routine surface global radiation measurement is shown to be relevant for climatological studies.

Bernard Pinty; Gérard Szejwach; Jacques Stum

1985-02-01T23:59:59.000Z

304

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

305

Radiance cache splatting: a GPU-friendly global illumination algorithm  

Science Conference Proceedings (OSTI)

Fast global illumination computation is a challenge in several fields such as lighting simulation and computergenerated visual effects for movies. To this end, the irradiance caching algorithm is commonly used since it provides high-quality rendering ...

Pascal Gautron; Jaroslav K?ivánek; Kadi Bouatouch; Sumanta Pattanaik

2008-08-01T23:59:59.000Z

306

Instrument Development H. E. Revercomb, F. A. Best, R. G. Dedecker, T. P. Dirkx,  

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

H. E. Revercomb, F. A. Best, R. G. Dedecker, T. P. Dirkx, H. E. Revercomb, F. A. Best, R. G. Dedecker, T. P. Dirkx, R. A. Herbsleb, R. O. Knuteson, J. F. Short, and W. L. Smith University of Wisconsin -Madison Space Science and Engineering Center Madison, WI 53706 Ground-based Folurier Transform infrared (FTIR) instru- ments are being produced at the University of Wisconsin (UW) and the Unliversity of Denver (UD) for the Atmo- spheric Radiation Measurement (ARM) Program's Cloud and Radiation Te:stbed (CART) sites as part of a joint Instrument Development Program (lOP). The three instru- ment types under development are summarized in Table 1 . For each ARM site, the 1 cm-1 resolution Atmospheric Emitted Radiance ilnterferometer (AERI) is expected to be operated both at the central site and at four extended boundary location~; to allow its use for radiometric studies

307

Research Highlight  

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

Improving the Treatment of Radiation in Climate Models Improving the Treatment of Radiation in Climate Models Download a printable PDF Submitter: Delamere, J. S., Tech-X Corporation Area of Research: Radiation Processes Working Group(s): Aerosol Life Cycle, Cloud Life Cycle Journal Reference: Delamere JS, SA Clough, VH Payne, EJ Mlawer, DD Turner, and RR Gamache. 2010. "A far-infrared radiative closure study in the Arctic: Application to water vapor." Journal of Geophysical Research - Atmospheres, 115, D17106, 10.1029/2009JD012968. The mean AERI-ER radiances for a select set of cloud-free cases at NSA in 2007 are presented in the top panel. The bottom panel presents mean spectral differences between the measurements and model calculations. The red line demonstrates the differences when using the pre-RHUBC version of

308

Bench-Scale Cross Flow Filtration of  

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

6.1 6.1 Retrieving Temperature and Moisture Profiles from AERI Radiance Observations: AERIPROF Value-Added Product Technical Description Revision 1 W.F. Feltz D.D. Turner H.B. Howell W.L. Smith R.O. Knuteson H.M. Woolf J. Comstock C. Sivaraman R. Mahon T.Halter April 2007 Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research 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,

309

Inference of Cirrus Cloud Properties Using Satellite-observed Visible and Infrared Radiances. Part I: Parameterization of Radiance Fields  

Science Conference Proceedings (OSTI)

Current techniques for deriving cirrus optical depth and altitude from visible (0.65 ?m) and infrared (11.5 ?m) satellite data use radiative transfer calculations based on scattering phase functions of spherical water droplets. This study ...

Patrick Minnis; Kuo-Nan Liou; Yoshihide Takano

1993-05-01T23:59:59.000Z

310

Superfluid 4He interferometers: construction and experiments  

E-Print Network (OSTI)

Brass guide (plunger slides insideplunger. . . . . Brass housing can. . . . . . . . . . . . .Brass plunger (tip is screwed on to

Joshi, Aditya Ajit

2013-01-01T23:59:59.000Z

311

Superfluid 4He interferometers: construction and experiments  

E-Print Network (OSTI)

using a small, commercial butane torch and blasting the sealtubes from the stycast using a butane torch as described inonto the D-ring and the butane torch removal method is just

Joshi, Aditya Ajit

2013-01-01T23:59:59.000Z

312

Superfluid 4He interferometers: construction and experiments  

E-Print Network (OSTI)

weak-link. . . . . . . . . . . . . . . . . . . . . . . . . . .relations for He-II weak-link (measured). . . . . . . . .A.4 Single weak-link cell drawings . . . . . . . . . . . B

Joshi, Aditya Ajit

2013-01-01T23:59:59.000Z

313

INTERFEROMETER FOR STUDIES OF THE COSMIC  

E-Print Network (OSTI)

.2 Post R.F., Fowler T.K., Killeen J., Mirin A.A. Concept for a high- power-density mirror fusion reactor

314

Superfluid 4He interferometers: construction and experiments  

E-Print Network (OSTI)

reorientation). . . . . . . . . . . 11.2 Heat-pipe poweris henceforth referred to as a “heat-pipe”. See Fig.a SHeQUID containing such a heat-pipe. Putting Eqs. (1.19)

Joshi, Aditya Ajit

2013-01-01T23:59:59.000Z

315

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

316

Research Highlight  

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

ARM Program Achieves Milestone in Global Cloud Properties Research ARM Program Achieves Milestone in Global Cloud Properties Research Submitter: Revercomb, H. E., University of Wisconsin, Madison Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Knuteson, R.O., Best, F.A., Dedecker, R.G., Feltz, W.F., Revercomb, H.E., and Tobin, D.C., 2004: "10 Years of AERI Data from the DOE ARM Southern Great Plains Site," In Proceedings from the Fourteenth ARM Science Team Meeting, U.S. Department of Energy,Washington, D.C. Figure 1 Figure 2 From the unassuming farmlands of north-central Oklahoma comes a milestone for the global climate research community. March 2004 marked the 10-year anniversary for an instrument that now holds the prestigious distinction of providing the longest set of continuous atmospheric interferometer data

317

Andy Green  

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

Green Utility & Energy Markets Aeris andy.green@aeris.net This speaker was a visiting speaker who delivered a talk or talks on the date(s) shown at the links below. This speaker is...

318

Hawat-T  

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

ASTI-SORTI Comparison ASTI-SORTI Comparison T. M. Hawat, T. M. Stephen, and F. J. Murcray Physics and Astronomy University of Denver Denver, Colorado Abstract The Absolute Solar Transmittance Interferometer (ASTI) determines the absolutely calibrated solar spectral radiance from 1 micron to 5 microns (10000 to 2000 cm -1 ) with a 1 cm -1 spectral resolution. Recently, the Solar Radiance Transmission Interferometer (SORTI) was configured to operate in the near infrared, providing spectra from 750 nm to 2400 nm (13000 to 4000 cm -1 ) with 0.035 cm -1 resolu- tion. Simultaneous ASTI and SORTI observations at the Southern Great Plains (SGP) Atmospheric Radiation Measurement (ARM) program site are compared in the overlap region and ASTI spectra from SGP and other sites are compared to atmospheric model calculations.

319

Research Highlight  

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

ARM Science Applications of AERI Measurements: 1997 Progress ARM Science Applications of AERI Measurements: 1997 Progress Submitter: Smith, W. L., NASA - Langley Research Center Area of Research: Radiation Processes Working Group(s): Cloud Modeling Journal Reference: N/A Figure 1. Figs. 1a and 1b contain rms differences from 72 radiosondes for AERI retrievals (blue), GOES retrievals (black), and AERI+GOES retrievals (red) for temperature and mixing ratio respectively during the 1997 Water Vapor IOP. A measure of meteorological the variability of the temperature and water vapor is indicated by the green line. Figs. 1c and 1d show the TPW for the same cases from GOES, AERI+GOES, radiosonde, and the ARM SGP CART microwave radiometer and relative percent differences in TPW amounts. Figure 2. Four consecutive radiosonde, GOES, and AERI+GOES comparisons from

320

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

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Validation of a Physical Retrieval Scheme of Solar Surface Irradiances from Narrowband Satellite Radiances  

Science Conference Proceedings (OSTI)

An algorithm is presented to derive the downwelling solar surface irradiance from satellite measurements of the 0.63-?m reflectance, which explicitly accounts for variations in cloud optical depth and integrated water vapor. For validation, a ...

H. Deneke; A. Feijt; A. van Lammeren; C. Simmer

2005-09-01T23:59:59.000Z

322

Rapid Daytime Estimation of Cloud Properties over a Large Area from Radiance Distributions  

Science Conference Proceedings (OSTI)

An algorithm is developed to rapidly estimate cloud properties for a large area from daytime imager data. In this context, a large area refers to a grid cell composed of many imager pixels. The algorithm assumes a gamma distribution to model the ...

Andrew K. Heidinger

2003-09-01T23:59:59.000Z

323

Retrieval of Cloud Microphysical Properties from Thermal Infrared Observations by a Fast Iterative Radiance Fitting Method  

Science Conference Proceedings (OSTI)

An algorithm is presented for inferring the IR optical depth, effective radius, and liquid water path of clouds from multispectral observations of emitted thermal radiation, which takes advantage of the larger number of spectral channels of ...

C. Rathke; J. Fischer

2000-11-01T23:59:59.000Z

324

Assimilation of Infrared Radiances in the Context of Observing System Simulation Experiments  

Science Conference Proceedings (OSTI)

The Observing System Simulation Experiment (OSSE) capability developed at Environment Canada allows simulation of all observation types currently used operationally as well as future data types. Its infrastructure, based on the operational global ...

Sylvain Heilliette; Yves J. Rochon; Louis Garand; Jacek W. Kaminski

2013-04-01T23:59:59.000Z

325

Direct Determination of Wind Shears from the Gradients of Satellite Radiance Observations  

Science Conference Proceedings (OSTI)

To the extent that the stratosphere wind field is close to geostrophic, the thermal wind is a good approximation to the vertical wind shear (vertical variation of the horizontal wind). And since the thermal wind is proportional to the horizontal ...

George Ohring; Binyamin Neeman; Louis D. Duncan

1981-11-01T23:59:59.000Z

326

AN EMPIRICAL METHOD FOR ESTIMATING THE THERMAL RADIANCE OF CLEAR SKIES  

E-Print Network (OSTI)

Klink, and D.G. Baker, Solar Radiation Effects Pyrgeometerfor effects due to solar radiation) ·c.n N E CD . ::z:. U')glazing can reflect solar radiation. radiator surface can

Berdahl, Paul

2012-01-01T23:59:59.000Z

327

ISCCP Global Radiance Data Set: A New Resource for Climate Research  

Science Conference Proceedings (OSTI)

The Operational data-collection phase of the International Satellite Cloud Climatology Project(ISCCP) began in July 1983 as an element of the World Climate Research Program (WCRP). Since then, raw images from an international network of ...

R. A. Schiffer; W. B. Rossow

1985-12-01T23:59:59.000Z

328

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

329

Characteristics of the NOAA/NESDIS Cloud Retrieval Algorithm Using HIRS-MSU Radiance Measurements  

Science Conference Proceedings (OSTI)

A cloud retrieval algorithm using NOAA/National Environmental Satellite, Data and Information Service High-Resolution Infrared Radiation Sounder 2 Microwave Sounding Unit measurements from a polar-orbiting satellite, described in McMillin et al., ...

Shi-Keng Yang; Si-Song Zhou; Larry M. Mcmillin; Ken A. Campana

1996-11-01T23:59:59.000Z

330

The use of measured sky radiance data to improve infrared signature modelling  

Science Conference Proceedings (OSTI)

In this paper we discuss the complications of modelling the infrared signature of objects, for example ships and land-vehicles. Specifically we focus on the difficulties of accounting correctly for the effect of the environment on the signature. We attribute ...

Marcus Wilson; Ross Elliott; Keith Youern

2008-04-01T23:59:59.000Z

331

Reduction of Middle-Atmospheric Forecast Bias through Improvement in Satellite Radiance Quality Control  

Science Conference Proceedings (OSTI)

This article discusses a practical problem faced in operational atmospheric forecasting and data assimilation, and efforts to improve forecast quality through the choice of quality control parameters. The need to utilize as much data as possible ...

Young-Joon Kim; William F. Campbell; Steven D. Swadley

2010-04-01T23:59:59.000Z

332

An Approximation to Multiple Scattering in the Earth's Atmosphere: Almucantar Radiance Formulation  

Science Conference Proceedings (OSTI)

The retrieval of aerosol size distributions from solar aureole measurements, in the past, have been made tractable by assuming the single-scattering approximation, since the inclusion of multiple scattering by solving the complete radiative ...

M. A. Box; A. Deepak

1981-05-01T23:59:59.000Z

333

Determination of Semi-Transparent Cirrus Cloud Temperature from Infrared Radiances: Application to METEOSAT  

Science Conference Proceedings (OSTI)

The use of simultaneous infrared measurements to derive the temperature and emissivity of semi-transparent cirrus clouds is experimentally investigated. Results from the NASA/CONVAIR-990 Winter Experiment Program, 1977 (WEP) are discussed. It is ...

Gerard Szejwach

1982-03-01T23:59:59.000Z

334

Nimbus-7 37 GHz Radiances Correlated with Radar Rain Rates over the Gulf of Mexico  

Science Conference Proceedings (OSTI)

In a comparison between 37 GHz brightness temperatures from the Nimbus 7 Scanning Multichannel Microwave Radiometer and rain rates derived from the WSR-57 radars at Galveston, Texas and Apalachicola, Florida, it was found that the brightness ...

Roy W. Spencer; Barry B. Hinton; William S. Olson

1983-12-01T23:59:59.000Z

335

A New Instrument for Measurement of the Solar Aureole Radiance Distribution from Unstable Platforms  

Science Conference Proceedings (OSTI)

A novel imaging solar aureole radiometer, which can obtain absolute radiometric measurements of the solar aureole when operated on an unstable platform, is described. A CCD array is used to image the aureole, while a neutral density occulter on a ...

Joseph M. Ritter; Kenneth J. Voss

2000-08-01T23:59:59.000Z

336

Model Clouds over Oceans as Seen from Space: Comparison with HIRS/2 and MSU Radiances  

Science Conference Proceedings (OSTI)

Radiation observations are a key element in the evaluation of the 40-yr reanalysis at the European Centre for Medium-Range Weather Forecasts. This paper uses the High-Resolution Infrared Radiation Sounder/2 (HIRS/2) and Microwave Sounding Unit (...

F. Chevallier; P. Bauer; G. Kelly; C. Jakob; T. McNally

2001-11-01T23:59:59.000Z

337

Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance  

E-Print Network (OSTI)

software, windows, daylighting systems, shading systems,daylighting performance of complex fenestration systems (daylighting performance of complex fenestration systems (

Ward, Gregory

2011-01-01T23:59:59.000Z

338

Surface Temperature Determination from an Amalgamation of GOES and TIROS-N Radiance Measurements  

Science Conference Proceedings (OSTI)

A method to depict quasi-continuous surface temperature features is presented. Half-hourly GOES window channel brightness temperature determinations are employed to monitor time changes in the surface temperature field. TIROS-N water vapor ...

J. A. Zandlo; W. L. Smith; W. P. Menzel; C. M. Hayden

1982-01-01T23:59:59.000Z

339

Precipitable Water Estimation from High-Resolution Split Window Radiance Measurements  

Science Conference Proceedings (OSTI)

A technique that uses the spatial variance of image brightness temperature to derive total column Precipitable water is applied to high-resolution multispectral aircraft scanner data for the 19 June 1986 COHMEX day. The technique has several ...

Gary J. Jedlovec

1990-09-01T23:59:59.000Z

340

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

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


341

Satellite Cloud Classification and Rain-Rate Estimation Using Multispectral Radiances and Measures of Spatial Texture  

Science Conference Proceedings (OSTI)

Twelve months of Southern Hemisphere (maritime) midlatitudes Advanced Very High Resolution Radiometer local area coverage data at full radiometric and spatial resolution have been collocated with rain-rate data from three Doppler weather radars.

Michael J. Uddstrom; Warren R. Gray

1996-06-01T23:59:59.000Z

342

Electron Fabry-Perot interferometer with two entangled magnetic impurities  

E-Print Network (OSTI)

We consider a one-dimensional (1D) wire along which single conduction electrons can propagate in the presence of two spin-1/2 magnetic impurities. The electron may be scattered by each impurity via a contact-exchange interaction and thus a spin-flip generally occurs at each scattering event. Adopting a quantum waveguide theory approach, we derive the stationary states of the system at all orders in the electron-impurity exchange coupling constant. This allows us to investigate electron transmission for arbitrary initial states of the two impurity spins. We show that for suitable electron wave vectors, the triplet and singlet maximally entangled spin states of the impurities can respectively largely inhibit the electron transport or make the wire completely transparent for any electron spin state. In the latter case, a resonance condition can always be found, representing an anomalous behaviour compared to typical decoherence induced by magnetic impurities. We provide an explanation for these phenomena in term...

Ciccarello, F; Palma, G M; Vieira, V R; Zarcone, M

2006-01-01T23:59:59.000Z

343

Utility of atomic kicked-rotor interferometers for precision measurements  

Science Conference Proceedings (OSTI)

We theoretically investigate a proposed scheme to use an atomic {delta}-kicked rotor resonance for high-precision measurements of accelerations and the photon recoil frequency. Although the technique offers rapid scaling of the measurement sensitivity with pulse number, it also features a high sensitivity to initial atomic momentum. We find that for realistic atom sources, the momentum sensitivity significantly limits the achievable precision. We consider several different variations on the technique, but find similar limitations in all cases.

Horne, R. A.; Leonard, R. H.; Sackett, C. A. [Physics Department, University of Virginia, Charlottesville, Virginia 22904 (United States)

2011-06-15T23:59:59.000Z

344

Upgrade of the JET far infrared interferometer diagnostic  

Science Conference Proceedings (OSTI)

In recent years there has been a major upgrade of the JET far infrared diagnostic system consisting of a new laser system with the wavelength at 118.8 {mu}m at and more advanced processing electronics for phase counting. This provides a second colour measurement of the electron plasma density on the vertical system. Due to the shorter wavelength, the plasma induced laser beam refraction is reduced by a factor of three alleviating density errors caused by loss of signal (so-called 'fringe jumps'[A. Murari et al., Rev. Sci. Instrum. 77, 073505 (2006)]), in particular during high performance plasmas experiments in JET.

Boboc, A.; Edlington, T.; Dorling, S. [EURATOM/CCFE Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Gil, C.; Pastor, P.; Spuig, P. [CEA, IRFM, Cadarache F-13108 Saint-Paul-Lez-Durance (France); Collaboration: JET-EFDA Contributors

2012-10-15T23:59:59.000Z

345

Trajectory design and control for formation flying spaceborne interferometers  

E-Print Network (OSTI)

Spaceborne interferometry promises to greatly expand our knowledge of astronomy and astrophysics, and open the doors to many new discoveries. The purpose of this study is to investigate optimal resource management techniques ...

Mandy, Christophe Ph. (Christophe Philippe)

2009-01-01T23:59:59.000Z

346

Search for Cosmic Axions using an Optical Interferometer  

E-Print Network (OSTI)

A high finesse optical cavity can be used to search for cosmic axions in the mass range 10^{-6}search.

Adrian C. Melissinos

2008-07-07T23:59:59.000Z

347

1  

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

U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) sites. The AERI plus retrievals from the Southern Great Plains (SGP) site will show improvement in the...

348

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

349

ARM - Publications: Science Team Meeting Documents  

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

Introducing WEB_MADS Introducing WEB_MADS Dedecker, R.G., Quinn, G.M., Garcia, R.K., and Revercomb, H.E., University of Wisconsin-Madison Space Science and Engineering Center Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting The Multiple AERI Display System (MADS) is a software package developed to allow remote access to and viewing of the operational AERI data streams produced by remotely operated AERI instruments. The MADS system was developed some years ago and operates on stand alone Personal Computers that run the OS/2 operating system and that acquire remote AERI data via the Internet. WEB-MADS is a Web based prototype version of MADS that allows remote access to the same AERI data and information using any standard Web Browser. As was the case with the original MADS, WEB-MADS provides a means for real

350

Research Highlight  

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

Remote Sensing of Mineral Dust Using AERI Remote Sensing of Mineral Dust Using AERI Download a printable PDF Submitter: Hansell, R. A., University of California, Los Angeles Area of Research: Radiation Processes Working Group(s): Aerosol Journal Reference: Hansell R, KN Liou, SC Ou, SC Tsay, Q Ji, and JS Reid. 2008. "Remote sensing of mineral dust aerosol using AERI during the UAE2: A modeling and sensitivity study." Journal of Geophysical Research - Atmospheres, 113, D18202, doi:10.1029/2008JD010246. BT sensitivity to dust optical depth at 962 cm-1 with markers denoting locations of AERI subbands 1-17 from left to right. (a) Volz compact hexagon model spectra for four optical depths with best fit AERI spectrum. (b) Same as (a) but for a kaolinite/50% calcium carbonate mixturedust model.

351

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

352

Removal of the Solar Component in AVHRR 3.7-µm Radiances for the Retrieval of Cirrus Cloud Parameters  

Science Conference Proceedings (OSTI)

A numerical scheme has been developed to remove the solar component in the Advanced Very High Resolution Radiometer (AVHRR) 3.7-µm channel for the retrieval of cirrus parameters during daytime. This method uses a number of prescribed threshold ...

N. X. Rao; S. C. Ou; K. N. Liou

1995-02-01T23:59:59.000Z

353

Detection of Cloud-Top Height from Backscattered Radiances within the Oxygen A Band. Part 2: Measurements  

Science Conference Proceedings (OSTI)

Cloud-top heights were successfully derived from reflected solar radiation measurements within the oxygen A-band absorption. The accuracy of the estimated cloud-top heights was to within 40 meters over stratus clouds when compared with ...

J. Fischer; W. Cordes; A. Schmitz-Peiffer; W. Renger; P. Mörl

1991-09-01T23:59:59.000Z

354

Assimilation of Satellite Infrared Radiances and Doppler Radar Observations during a Cool Season Observing System Simulation Experiment  

Science Conference Proceedings (OSTI)

An observing system simulation experiment is used to examine the impact of assimilating water vapor–sensitive satellite infrared brightness temperatures and Doppler radar reflectivity and radial velocity observations on the analysis accuracy of a ...

Thomas A. Jones; Jason A. Otkin; David J. Stensrud; Kent Knopfmeier

2013-10-01T23:59:59.000Z

355

Accurate Spectrally Resolved Infrared Radiance Observation from Space: Implications for the Detection of Decade-to-Century–Scale Climatic Change  

Science Conference Proceedings (OSTI)

The character of data required to measure decade-to-century–scale climatic change is distinctly different from that required for weather prediction or for studies of meteorological processes. The data ought to possess the accuracy to detect the ...

David W. Keith; James G. Anderson

2001-03-01T23:59:59.000Z

356

Comparison of Model-Produced and Observed Microwave Radiances and Estimation of Background Error Covariances for Hydrometeor Variables within Hurricanes  

Science Conference Proceedings (OSTI)

A radiative transfer model was updated to better simulate Special Sensor Microwave Imager (SSM/I)–observed brightness temperatures in areas of high ice concentration. The difference between the lowest observed and model-produced brightness ...

Clark Amerault; Xiaolei Zou

2006-03-01T23:59:59.000Z

357

Climate Variability and Trends in SSU Radiances: A Comparison of Model Predictions and Satellite Observations in the Middle Stratosphere  

Science Conference Proceedings (OSTI)

Several recent studies have highlighted the potential of utilizing statistical techniques to pattern match observations and model simulations in order to establish a causal relationship between anthropogenic activity and climate change. Up to now ...

H. E. Brindley; A. J. Geer; J. E. Harries

1999-11-01T23:59:59.000Z

358

Spectral UV Measurements of Global Irradiance, Solar Radiance, and Actinic Flux in New Zealand: Intercomparison between Instruments and Model Calculations  

Science Conference Proceedings (OSTI)

Presented here are the results of a short but intense measurement campaign at Lauder, New Zealand, in which spectral irradiance from instruments operated by the National Institute of Water and Atmospheric Research (NIWA) and Austria/Innsbruck (...

Mario Blumthaler; Barbara Schallhart; Michael Schwarzmann; Richard McKenzie; Paul Johnston; Michael Kotkamp; Hisako Shiona

2008-06-01T23:59:59.000Z

359

Background Error Correlation between Surface Skin and Air Temperatures: Estimation and Impact on the Assimilation of Infrared Window Radiances  

Science Conference Proceedings (OSTI)

This paper makes use of ensemble forecasts to infer the correlation between surface skin temperature Ts and air temperature Ta model errors. The impact of this correlation in data assimilation is then investigated. In the process of assimilating ...

Louis Garand; Mark Buehner; Nicolas Wagneur

2004-12-01T23:59:59.000Z

360

Cirrus Cloud Properties Derived from POLDER-1/ADEOS Polarized Radiances: First Validation Using a Ground-Based Lidar Network  

Science Conference Proceedings (OSTI)

Bidirectional polarized reflectances measured with the POLDER-1 instrument on board Advanced Earth Observing Satellite-1 have been used to infer cloud altitude and thermodynamical phase (ice/liquid) at a global scale. This paper presents a ...

Hélène Chepfer; Philippe Goloub; James Spinhirne; Pierre H. Flamant; Mario Lavorato; Laurent Sauvage; Gérard Brogniez; Jacques Pelon

2000-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

The radiance of the gluon spin : constraining the proton spin structure with the direct photon double helicity asymmetry  

E-Print Network (OSTI)

Although fundamental to the observable universe, the proton is not elementary. Rather the particle is a bound state of three valence quarks and the QCD vacuum that condenses around them, its properties an amalgamation of ...

Betancourt, Michael (Michael Joseph)

2012-01-01T23:59:59.000Z

362

Atmospheric optical measurements during high altitude balloon flight, Part III, Sky radiances in the 400 to 500 millimicron region  

E-Print Network (OSTI)

5224 Sandia Corporation Sandia Base Albuquerque, NewPatterson AFB, Ohio Parsons, Mr. Dan Section 5224-1 SandiaCorporation Sandia Base Albuquerque, New Mexico Pezzuto, Mr.

Boileau, Almerian R

1961-01-01T23:59:59.000Z

363

The Influences of TOVS Radiance Assimilation on Temperature and Moisture Tendencies in JRA-25 and ERA-40  

Science Conference Proceedings (OSTI)

A Japanese long-term reanalysis (JRA-25) was completed in 2006 utilizing the comprehensive set of observations from the 40-yr ECMWF Re-Analysis (ERA-40). JRA-25 and ERA-40 adopted the same type of assimilation systems: 3DVAR with direct use of ...

Masami Sakamoto; John R. Christy

2009-08-01T23:59:59.000Z

364

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

Science Conference Proceedings (OSTI)

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

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

365

Radiative Importance of ThinŽ Liquid Water Clouds  

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

Program Program Accomplishments of the Instantaneous Radiative Flux (IRF) Working Group August 2006 AERI Observations at Southern Great Plains Improve Infrared Radiative Transfer Models Turner et al., JAS, 2004 * AERI observations used to evaluate clear sky IR radiative transfer models * Long-term comparisons have improved - Spectral line database parameters - Water vapor continuum absorption models * Reduced errors in computation of downwelling radiative IR flux by approx 4; current uncertainty is on the order of 1.5 W/m 2 AERI - (Pre-ARM Model) AERI - (Model in 2003) 1 RU = 1 mW / (m 2 sr cm -1 ) Excellent Agreement in Clear Sky Shortwave Radiative Transfer Between Obs and Calcs Shortwave Flux Bias (Solid) Shortwave Flux RMS (Hatched) W m -2 * Comparison of shortwave radiative flux at the surface

366

Microsoft PowerPoint - ARM_032607_3647c.ppt  

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

and Ground-Based Remote Sensing of Mineral Dust Using MODIS IR Window Channels, AERI Spectra and ARM Data Richard Hansell Jr. (rhansell@atmos.ucla.edu) 1 , K.N. Liou 1 , S.C. Ou 1...

367

ARM - Selected Science Team Proposals - FY 2003  

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

Study of Arctic Cloud and Aerosol Using AERI Data: Radiative Properties, Thermodynamic Phase, and a Search for the Indirect Aerosol Effect" NEW-Dr. Greg McFarquhar, University of...

368

PIRATA Northeast Extension 2011 / AEROSE-VII Cruise Report  

E-Print Network (OSTI)

-AERI: Malgorzata Szczodrak (Univ. Miami) AEROSE: Nick Nalli (NESDIS/STAR); Ebony Roper (Lincoln Univ.); Chris. The ship ran at 740+ rpms during several long transits, and the CO Mark #12;3 Pickett and Chief Bosun Bruce

369

arm_stm_2007_revercomb_poster_cloud.ppt  

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

Assessment Part 2: Cirrus Radiative Flux Study Using RadarLidarAERI Derived Cloud Properties David Tobin, Lori Borg, David Turner, Robert Holz, Daniel DeSlover, Hank Revercomb,...

370

ARM - Publications: Science Team Meeting Documents  

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

AERI and Raman Lidar Cirrus Cloud Optical Depth Retrieval to Validate Aircraft-Based Cirrus Measurements DeSlover, D.H.(a), Knuteson, R.O.(a), Turner, D.D.(b), Whiteman, D.N.(c),...

371

Analysis of a Bose-Einstein Condensate Double-Well Atom Interferometer  

Science Conference Proceedings (OSTI)

Motivated by an open theoretical question in Bose-Einstein condensate atom interferometry, we introduce a novel computational method to describe the condensate order parameter in the presence of a central barrier. We are able to follow the full dynamics of the system during the raising of a barrier, from a single macroscopically occupied ground state to a state where imaging shows a split density and, finally, to the observation of a phase-controlled interference pattern. We are able to discriminate between a mean-field and a two-mode state via the Penrose-Onsager criterion. By simulating the first such experiment, where in spite of the observed splitting of the condensate density there is never more than a single macroscopically occupied state, we provide a definitive interpretation of these systems as a novel many-body form of Young's double-slit experiment.

Faust, Douglas K. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Reinhardt, William P. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 (United States)

2010-12-10T23:59:59.000Z

372

Commercialization of atom interferometers for borehole gravity gradiometry. Fourth quarterly report, July--September 1993  

DOE Green Energy (OSTI)

The present status of tasks is: Task 1- Solution of tomography problem (completed qtrs. 1 and 2), Task 2- Study influence of vibrations (completed qtr. 3), Task 3- List of borehole imposed constraints (completed qtr.3 with update this qtr.), Task 4- Evaluate merits of various cooling schemes (completed this qtr.), Task 5- Specify magnet system requirements (completed qtr. 3), Task 6-Specify laser system (in progress), and Task 7- a. specify detector, b. specify gratings and layout, c. specify gratings and magnet spacers, d. specify vacuum system (all in progress). During this quarter, we report an update to Task 3, as well as the completion of Task 4. Work on Tasks 6 and 7 is in progress. The use of a magneto-optic trap (MOT), the choice of atomic species, state of the art for lithium MOT`s, use of lenses to increase the intensity, computerized simulation of system throughtput, and magnetic lens design are the topics addressed concerning Task 4.

Clauser, J.F.

1993-11-01T23:59:59.000Z

373

Results from prototype polarimeter/interferometer on Alcator C-Mod  

E-Print Network (OSTI)

The poloidal field and corresponding toroidal current profiles have been among the most difficult and most important measurements in tokamak fusion research. One method demonstrated to obtain information about these ...

Smith, Kelly (Kelly Robert)

2007-01-01T23:59:59.000Z

374

Electronically swept millimetre-wave interferometer for spatially resolved measurement of plasma electron  

E-Print Network (OSTI)

electron density John Howard and David Oliver Plasma Research Laboratory, Research School of Physical, located in the Plasma Research Laboratory at the Australian National University, is a flexible, medium

Howard, John

375

Dynamic Precision Measurement of the Casimir Force using Short Coherence Length Fiber-Based Interferometer  

E-Print Network (OSTI)

p is the plasma frequency. N is the density of conductionplasma-like permittivity, we first need to subtract the Drude behavior of the conductionplasma, Drude model is the self-consistent solution of Maxwell equations with the real current of conduction

Chang, Chia-Cheng

2010-01-01T23:59:59.000Z

376

Observation of Ultrahigh-Energy Cosmic Rays with the ANITA Balloon-Borne Radio Interferometer  

Science Conference Proceedings (OSTI)

We report the observation of 16 cosmic ray events with a mean energy of 1.5x10{sup 19} eV via radio pulses originating from the interaction of the cosmic ray air shower with the Antarctic geomagnetic field, a process known as geosynchrotron emission. We present measurements in the 300-900 MHz range, which are the first self-triggered, first ultrawide band, first far-field, and the highest energy sample of cosmic ray events collected with the radio technique. Their properties are inconsistent with current ground-based geosynchrotron models. The emission is 100% polarized in the plane perpendicular to the projected geomagnetic field. Fourteen events are seen to have a phase inversion due to reflection of the radio beam off the ice surface, and two additional events are seen directly from above the horizon. Based on a likelihood analysis, we estimate angular pointing precision of order 2 deg. for the event arrival directions.

Hoover, S.; Belov, K.; Vieregg, A. G.; Saltzberg, D. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States); Nam, J. [Department of Physics, Ewha Womans University, Seoul (Korea, Republic of); Gorham, P. W.; Allison, P.; Kowalski, J.; Learned, J. G.; Matsuno, S.; Miki, C.; Miocinovic, P.; Romero-Wolf, A.; Rosen, M.; Ruckman, L.; Varner, G. S. [Department of Physics and Astronomy, University of Hawaii, Manoa, Hawaii 96822 (United States); Grashorn, E.; Beatty, J. J.; Mercurio, B. C.; Palladino, K. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)

2010-10-08T23:59:59.000Z

377

Demonstration of a Tunable-Bandwidth White Light Interferometer using Anomalous Dispersion in Atomic Vapor  

E-Print Network (OSTI)

Recently, the design of a white-light-cavity has been proposed using negative dispersion in an intra-cavity medium to make the cavity resonate over a large range of frequencies and still maintain a high cavity build-up. This paper presents the demonstration of this effect in a free-space cavity. The negative dispersion of the intra-cavity medium is caused by bi-frequency Raman gain in an atomic vapor cell. A significantly broad cavity response over a bandwidth greater than 20 MHz has been observed. The experimental results agree well with the theoretical model, taking into account effects of residual absorption. A key application of this device would be in enhancing the sensitivity-bandwidth product of the next generation gravitational wave detectors that make use of the so-called signal-recycling mirror.

G. S. Pati; M. Salit; K. Salit; M. S. Shahriar

2006-10-04T23:59:59.000Z

378

Quantum noise and radiation pressure effects in high power optical interferometers  

E-Print Network (OSTI)

In recent years, a variety of mechanical systems have been approaching quantum limits to their sensitivity of continuous position measurements imposed by the Heisenberg Uncertainty Principle. Most notably, gravitational ...

Corbitt, Thomas Randall

2008-01-01T23:59:59.000Z

379

Dual-recycled cavity-enhanced Michelson interferometer for gravitational-wave detection  

E-Print Network (OSTI)

in Livingston, Louisiana, and in Hanford, Washington. Near Hanover, Ger- many, the German­British GEO2 collaboration is building a 600-m dual-recycled MI. The Japanese TAMA3 collaboration is constructing a 300-m will produce enough gravitational strain to be detect- able. Along with the construction and commission- ing

Tanner, David B.

380

A 145-GHz Interferometer for Measuring the Anisotropy of the Cosmic Microwave  

E-Print Network (OSTI)

alternative to a day in the machine shop making something that looks beautiful. Joe Fowler and I seemed memo, MINT Phasing Re- quirements and Sideband Separation (Fowler 2001). Figure 2.3 shows the important VAVBei , as advertised (Fowler 2001). In the case of a broad-band receiver, one would integrate r() over

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Conceptual Design of the Tangentiallt Viewing Combined Interferometer-Polimeter for ITER Density Measurements (A27301)  

E-Print Network (OSTI)

Proc. Of 19th High Temperature Plasma Diagnostics Conference, Monterey, California, 2012; To Be Published In Rev. Sci. Instrum. (2012)19th Topical Conference on High Temperature Plasma Diagnostics Monterey California, US, 2012999619118

Van Zeeland, M.A.

2012-07-19T23:59:59.000Z

382

A bi-prism interferometer for hard x-ray photons  

Science Conference Proceedings (OSTI)

Micro-fabricated bi-prisms have been used to create an interference pattern from an incident hard X-ray beam, and the intensity of the pattern probed with fluorescence from a 30 nm-thick metal film. Maximum fringe visibility exceeded 0.9 owing to the nano-sized probe and the choice of single-crystal prism material. A full near-field analysis is necessary to describe the fringe field intensities, and the transverse coherence lengths were extracted at APS beamline 8-ID-I. It is also shown that the maximum number of fringes is dependent only on the complex refractive index of the prism material.

Isakovic, A.F.; Siddons, D.; Stein, A.; Warren, J.B.; Sandy, A.R.; Narayanan, M.S.; Ablett, J.M.; Metzler, M. and Evans-Lutterodt, K.

2010-04-06T23:59:59.000Z

383

ARM - Publications: Science Team Meeting Documents  

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

4 Science Team Meeting 4 Science Team Meeting 1994 Proceedings Proceedings Sorted by Title Proceedings Sorted by Author Science Team Meeting Proceedings Proceedings of the Fourth Atmospheric Radiation Measurement (ARM) Science Team Meeting DOE CONF-940277, March 1994 Charleston, South Carolina For proper viewing, many of these proceedings should be viewed with Adobe Acrobat Reader. Download the latest version from the Adobe Reader website. View session papers by Author or Title. * Poster abstract only; an extended abstract was not provided by the author(s). A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Abreu, L.W. MODTRAN3: Suitability as a Flux-Divergence Code Acharya, P. MODTRAN3: Suitability as a Flux-Divergence Code Ackerman, S.A. Atmospheric Emitted Radiance Interferometer Data Analysis Methods

384

Assimilating AMSU-A Radiances in TC Core Area with NOAA Operational HWRF (2011) and a Hybrid Data Assimilation System: Danielle (2010)  

Science Conference Proceedings (OSTI)

A regional hybrid variational-ensemble data assimilation system (HVEDAS), the Maximum Likelihood Ensemble Filter (MLEF), is applied to the 2011 version of the NOAA operational Hurricane Weather Research and Forecasting (HWRF) model to evaluate the ...

Man Zhang; Milija Zupanski; Min-Jeong Kim; John A. Knaff

385

Evaluation of Hydrometeor Phase and Ice Properties in Cloud-Resolving Model Simulations of Tropical Deep Convection Using Radiance and Polarization Measurements  

Science Conference Proceedings (OSTI)

Satellite measurements are used to evaluate the glaciation, particle shape, and effective radius in cloud-resolving model simulations of tropical deep convection. Multidirectional polarized reflectances constrain the ice crystal geometry and the ...

Bastiaan van Diedenhoven; Ann M. Fridlind; Andrew S. Ackerman; Brian Cairns

2012-11-01T23:59:59.000Z

386

Retrieval and Use of High-Resolution Moisture and Stability Fields from Nimbus 6 HIRS Radiances in Pre-Convective Situations  

Science Conference Proceedings (OSTI)

This is a study of environmental conditions prior to convective development on the Great Plains of the United States on four case study days in August 1975. The tool used was the High-resolution Infrared Radiation Sounder (HIRS) on Nimbus 6. A ...

Donald W. Hillger; Thomas H. Vonder Haar

1981-08-01T23:59:59.000Z

387

Objective Assessment of the Information Content of Visible and Infrared Radiance Measurements for Cloud Microphysical Property Retrievals over the Global Oceans. Part I: Liquid Clouds  

Science Conference Proceedings (OSTI)

The importance of accurately representing the role of clouds in climate change studies has become increasingly apparent in recent years, leading to a substantial increase in the number of satellite sensors and associated algorithms that are ...

Tristan S. L’Ecuyer; Philip Gabriel; Kyle Leesman; Steven J. Cooper; Graeme L. Stephens

2006-01-01T23:59:59.000Z

388

A validation of the Radiance three-phase simulation method for modeling annual daylight performance of optically-complex fenestration systems  

E-Print Network (OSTI)

of innovative daylighting systems and to demonstrate itsproperties of daylighting systems and have performed limitedCharacterization of daylighting systems required modified

McNeil, Andrew

2013-01-01T23:59:59.000Z

389

The Angular Distribution of UV-B Sky Radiance under Cloudy Conditions: A Comparison of Measurements and Radiative Transfer Calculations Using a Fractal Cloud Model  

Science Conference Proceedings (OSTI)

In recent years, global warming concerns have focused attention on cloud radiative forcing and its accurate encapsulation in radiative transfer measurement and modeling programs. At present, this process is constrained by the dynamic movement and ...

Christopher Kuchinke; Kurt Fienberg; Manuel Nunez

2004-05-01T23:59:59.000Z

390

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

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

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

391

Energy Solutions Using Wireless Telemetry  

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

Solutions Using Wireless Telemetry Solutions Using Wireless Telemetry Speaker(s): Andy Green Date: June 12, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Satkartar K. Kinney This talk will address the following: * Introduction to wireless data networks * What are cellular control channels and why do I care? * Telemetry using wireless short packet data * Aeris technologies * Energy applications - Automatic meter reading - HVAV-R monitoring and control - Home gateways and remote thermostat control - Load management and curtailment - Distribution automation - Supply monitoring/management * The future For more information on this topic, you're invited to visit Aeris.Net at: http://www.aeris.net For more information about this seminar, please contact: Satkartar Kinney(510) 495-2365

392

Characterisation of COPD heterogeneity in the ECLIPSE cohort  

E-Print Network (OSTI)

. Exacerbations requiring treatment with antibiotics, oral corticosteroids and/or hospitalisation in the year prior to the study were also recorded. Co-morbidities were self-reported using the ATS-DLD-78 questionnaire. Nutritional status was assessed by the body... to the pulmonary division he works in to complete research studies. From GlaxoSmithKline, Boehringer- Ingelheim, Forrest Medical, Astra Zeneca and Aeris; has served on advisory boards for GlaxoSmithKline, Boehringer-Ingelheim, Almirall, Astra Zeneca, Aeris and Deep...

Agusti, Alvar; Calverley, Peter M A; Celli, Bartolome; Coxson, Harvey O; Edwards, Lisa D; Lomas, David A; MacNee, William; Miller, Bruce E; Rennard, Steve; Silverman, Edwin K; Tal-Singer, Ruth; Wouters, Emiel; Yates, Julie C; Vestbo, Jorgen; (ECLIPSE) Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints

2010-09-10T23:59:59.000Z

393

Upgraded Two-Color Heterodyne Interferometer System on DIII-D and Its Use as a Fluctuation Diagnostic  

E-Print Network (OSTI)

Bull. Am. Phys. Soc. 49, 158 (2004)46th American Physical Society Annual Meeting of Division of Plasma Physics Savannah Georgia, US, 2004999611905

Van Zeeland, M.A.

2004-01-01T23:59:59.000Z

394

System and method for generating a displacement with ultra-high accuracy using a fabry-perot interferometer  

DOE Patents (OSTI)

A system and method for generating a desired displacement of an object, i.e., a target, from a reference position with ultra-high accuracy utilizes a Fabry-Perot etalon having an expandable tube cavity for resolving, with an Iodine stabilized laser, displacements with high accuracy and for effecting (as an actuator) displacements of the target. A mechanical amplifier in the form of a micropositioning stage has a platform and a frame which are movable relative to one another, and the tube cavity of the etalon is connected between the platform and frame so that an adjustment in length of the cavity effects a corresponding, amplified movement of the frame relative to the cavity. Therefore, in order to provide a preselected magnitude of displacement of the stage frame relative to the platform, the etalon tube cavity is adjusted in length by a corresponding amount. The system and method are particularly well-suited for use when calibrating a high accuracy measuring device.

McIntyre, Timothy J. (Knoxville, TN)

1994-01-01T23:59:59.000Z

395

Class.Quantum Grav. 10 (1993) S1854185. Printed in the UK The Laser InterferometerGravitationalWave Observatory  

E-Print Network (OSTI)

systems. The project received funding in 1992 to begin design and construction. Sites for the two facilities (Hanford, Washington and Ljvingstob Lousiana) have been selected. Under the present schedule

Adolphs, Ralph

396

Expected productivity-based risk analysis in conceptual design : with application to the Terrestrial Planet Finder Interferometer mission  

E-Print Network (OSTI)

During the design process, risk is mentioned often, but, due to the lack of a quantitative parameter that engineers can understand and trade, infrequently impacts major design decisions. The definition of risk includes two ...

Wertz, Julie (Julie Ann), 1978-

2006-01-01T23:59:59.000Z

397

David Cahen, Canada-Weizmann 10/'09 Modern Life with Sustainable Energy  

E-Print Network (OSTI)

Power Sources by Type TW Gas Hydro Other for 2005 0 1 2 3 4 5 Oil Coal Nuclear Bio mass ENERGY: J, WsecDavid Cahen, Canada-Weizmann 10/'09 Modern Life with Sustainable Energy Presents an Unprecedented Institute's Alternative Sustainable Energy Research Initiative http://www.weizmann.ac.il/AERI/ Presentations

Martin, Jan M.L.

398

Hindcasting the January 2009 Arctic Sudden Stratospheric Warming with Unified Parameterization of Orographic Drag in NOGAPS. Part II: Short-Range Data-Assimilated Forecast and the Impacts of Calibrated Radiance Bias Correction  

Science Conference Proceedings (OSTI)

This study is Part II of the effort to improve the forecasting of sudden stratospheric warming (SSW) events by using a version of the Navy Operational Global Atmospheric Prediction System (NOGAPS) that covers the full stratosphere. In Part I, ...

Young-Joon Kim; William Campbell; Benjamin Ruston

2011-12-01T23:59:59.000Z

399

Monitoring the response of the upper troposphere/lower stratosphere to a greenhouse gas scenario  

SciTech Connect

The emission interferometer system deployed at a high elevation site in the foothills of the Rocky Mountains. Spectra and atmospheric soundings were collected under various sky conditions. Spectra were collected at different observation zenith angles to investigate those portions of the spectrum most sensitive to changes in atmospheric path. The stability of the 60{degrees}/O{degrees} radiance ratios have been evaluated for the small number of clear sky spectra collected to date. Initial results indicate that the ratio is constant to about 0.5% (excluding large variations in the temperature structure) for clear sky cases. The ratio also shows sensitivity even to thin cloudiness. Examination of the spectra in the atmospheric window region shows that the slope of the floor of the spectra is sensitive even to near sub-visual cirrus conditions. A temperature and gaseous concentration retrieval algorithm has been acquired to investigate the more conventional inversion to the current problem. A high speed computer workstation has been acquired to facilitate this phase of the research. 1 ref., 5 figs.

Davis, J.M.; Cox, S.K.

1991-11-02T23:59:59.000Z

400

ISCCP Cloud Algorithm Intercomparison  

Science Conference Proceedings (OSTI)

The International Satellite Cloud Climatology Project (ISCCP) will provide a uniform global climatology of satellite-measured radiances and derive an experimental climatology of cloud radiative properties from these radiances. A pilot study to ...

W. B. Rossow; F. Mosher; E. Kinsella; A. Arking; M. Desbois; E. Harrison; P. Minnis; E. Ruprecht; G. Seze; C. Simmer; E. Smith

1985-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Intercalibration of GOES-11 and GOES-12 Water Vapor Channels with MetOp IASI Hyperspectral Measurements  

Science Conference Proceedings (OSTI)

The calibrated radiances from geostationary water vapor channels play an important role for weather forecasting, data assimilation, and climate studies. Therefore, better understanding the data quality for radiance measurements and independently ...

Likun Wang; Changyong Cao; Mitch Goldberg

2009-09-01T23:59:59.000Z

402

Use of a Maximum Entropy Method as a Regularization Technique during the Retrieval of Trace Gas Profiles from Limb Sounding Measurements  

Science Conference Proceedings (OSTI)

The retrieval of trace gas profiles from radiance measurements of limb sounding instruments represents an inverse problem: vertical profiles of mixing ratios have to be extracted from sequences of horizontally measured radiances recorded by a ...

J. Steinwagner; G. Schwarz; S. Hilgers

2006-12-01T23:59:59.000Z

403

Spatial Convergence of Bidirectional Reflectance Models  

Science Conference Proceedings (OSTI)

Analyses of bidirectional reflectance data are presented with implications regarding the spatial scales appropriate for inferring irradiances from radiances reflected by various surface–atmosphere scenes. Multiple-angle radiance data collected in ...

John M. Davis; Stephen K. Cox

1998-10-01T23:59:59.000Z

404

LBNL Window & Daylighting Software -- WINDOW 6 Research Version  

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

Using Radiance in WINDOW 7 beta August 3rd, 2012 Last Updated: 08032012 This package will add the capability to generate basic Radiance images from within WINDOW. You need to...

405

A Multiple Direction Radiation Sensor, DIRAM  

Science Conference Proceedings (OSTI)

The Directional Radiance Distribution Measurement (DIRAM) device was designed and built to determine the angular distribution of shortwave radiance as a function of height in cloudy and clear-sky conditions at various surface albedos. The ...

J. C. H. van der Hage; H. van Dop; A. Los; W. Boot; D. van As

2001-12-01T23:59:59.000Z

406

Unfiltering of the Geostationary Earth Radiation Budget (GERB) Data. Part I: Shortwave Radiation  

Science Conference Proceedings (OSTI)

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

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

2008-07-01T23:59:59.000Z

407

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

Science Conference Proceedings (OSTI)

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

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

2008-07-01T23:59:59.000Z

408

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

409

Neutronics Analysis of the Divertor Interferometer Diagnostics Inside the Lower Port #8 Plug of ITER with ATTILA 3-D CAD-Based FEM Code  

Science Conference Proceedings (OSTI)

Nuclear Analysis & Experiments / Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 2)

Mahmoud Z. Youssef; Russell Feder; Mohamed Dagher; Aaron Aoyama; Michael Duco

410

A linear Stark shift in dressed atoms as a signal to measure a nuclear anapole moment with a cold atom fountain or interferometer  

E-Print Network (OSTI)

We demonstrate theoretically the existence of a linear dc Stark shift of the individual substates of an alkali atom in its ground state, dressed by a circularly polarized laser field. It arises from the electroweak nuclear anapole moment violating P but not T. It is characterized by the pseudoscalar equal to the mixed product formed with the photon angular momentum and static electric and magnetic fields. We derive the relevant left-right asymmetry with its complete signature in a field configuration selected for a precision measurement with cold atom beams. The 3,3 to 4,3 Cs hyperfine-transition frequency shift amounts to 7 $\\mu$Hz for a laser power of about 1 kW at 877 nm, E=100 kV/cm and B larger than 0.5 G.

Bouchiat, M A

2006-01-01T23:59:59.000Z

411

A linear Stark shift in dressed atoms as a signal to measure a nuclear anapole moment with a cold atom fountain or interferometer  

E-Print Network (OSTI)

We demonstrate theoretically the existence of a linear dc Stark shift of the individual substates of an alkali atom in its ground state, dressed by a circularly polarized laser field. It arises from the electroweak nuclear anapole moment violating P but not T. It is characterized by the pseudoscalar equal to the mixed product formed with the photon angular momentum and static electric and magnetic fields. We derive the relevant left-right asymmetry with its complete signature in a field configuration selected for a precision measurement with cold atom beams. The 3,3 to 4,3 Cs hyperfine-transition frequency shift amounts to 7 $\\mu$Hz for a laser power of about 1 kW at 877 nm, E=100 kV/cm and B larger than 0.5 G.

Marie-Anne Bouchiat

2006-11-03T23:59:59.000Z

412

Dynamics of multi-body space interferometers including reaction wheel gyroscopic stiffening effects : structurally connected and electromagnetic formation of flying architectures  

E-Print Network (OSTI)

Space telescopes have the potential to revolutionize astronomy and our search for life-supporting planets beyond our Solar System. Free of atmospheric distortions, they are able to provide a much "clearer" view of the ...

Elias, Laila Mireille, 1977-

2004-01-01T23:59:59.000Z

413

Novel approaches to Newtonian noise suppression in interferometric gravitational wave detection  

E-Print Network (OSTI)

The Laser Interferometer Gravitational-wave Observatory (LIGO) attempts to detect ripples in the curvature of spacetime using two large scale interferometers. These detectors are several kilometer long Michelson interferometers ...

Hunter-Jones, Nicholas R

2011-01-01T23:59:59.000Z

414

Simulating the Daylight Performance of Complex Fenestration Systems...  

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

Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance Title Simulating the Daylight Performance of Complex...

415

Colorado State University Center for Geosciences/Atmospheric Research (CG/AR)  

E-Print Network (OSTI)

into the MODTRAN v4.2 radiance and transmittance model. The results consisted of 10-micron optical depths, which

416

NIST Manuscript Publication Search  

Science Conference Proceedings (OSTI)

... Title: Water Heat Pipe Blackbody as a Reference Spectral Radiance Source Between 50 C and 250 C. Published: Date Unknown. ...

2012-04-09T23:59:59.000Z

417

NIST Optical Technology Div. 2000 - Current Directions  

Science Conference Proceedings (OSTI)

... known physical principles that relate radiance to fundamental physics: Planck's equation of black body (thermal) radiation, Schwinger's equation of ...

418

Validating the validation: the influence of liquid water distribution in clouds on the intercomparison  

E-Print Network (OSTI)

of stellite radiance wavenumber spectra. Rem. Sens. Environ., 42, 51 ­ 64. Brenguier, J.-L., H. Pawlowska, L

Stoffelen, Ad

419

1  

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

Phase Determination in the Arctic Using AERI Data Phase Determination in the Arctic Using AERI Data D. D. Turner and S. A. Ackerman Cooperative Institute for Meteorological Satellite Studies University of Wisconsin - Madison Madison, Wisconsin Introduction Cloud-radiative processes in the Arctic have a large and significant effect on the global energy budget. Curry et al. (1996) have identified cloud phase as one of the primary unknowns, which affects the radiation budget in the Arctic. To correctly determine cloud properties, such as particle size and condensed water path that dictate the cloud's radiative effects, the cloud phase must be accurately determined. However, the presence of highly reflecting snow and ice, together with a persistent temperature inversion that exists much of the year, hampers the ability to remotely detect cloud phase.

420

1  

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

AERI/GOES Retrievals Versus Radiosondes AERI/GOES Retrievals Versus Radiosondes for Driving SCMs S. C. Xie, R. T. Cederwall, and J. J. Yio Lawrence Livermore National Laboratory Livermore, California W. F. Feltz University of Wisconsin-Madison Space Science and Engineering Center Madison, Wisconsin D. D. Turner Pacific Northwest National Laboratory Richland, Washington M. H. Zhang State University of New York at Stony Brook Stony Brook, New York Introduction Single-column models (SCMs) require observations to provide suitable initial and boundary conditions. To meet this need, the Atmospheric Radiation Measurement (ARM) Program conducts intensive operational periods (IOPs) to provide 3-hourly radiosondes and other observations. However, such high-frequency sonde launches can be expensive. Therefore, the ARM Program can only support a

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Use of Quantum Error Coding in a 4-Blade Neutron ...  

Science Conference Proceedings (OSTI)

Use of Quantum Error Coding in a 4-Blade Neutron Interferometer. Summary: ... Figure 1: A schematic diagram of the 5-blade neutron interferometer. ...

2013-07-30T23:59:59.000Z

422

CORRECTINGFORVISIBILITYBIASIN STRIPTRANSECT AERIALSURVEYSOFAQUATICFAUNA  

E-Print Network (OSTI)

by calculating and applying survey- spe.cific correction f".b*l;,1,i; ii.rt"., aeri,al zuieys of aquaiic- fat to observers because of water turbidity' J. W'U)L nANA@- s3(4Fr017-t(n4 f ) Aerial surveys have been used bias). Caughley (1979) argued that aerial survey estimalesaie mostuseful asindicestracking rel- ative

Marsh, Helene

423

ARM - Publications: Science Team Meeting Documents  

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

Variations in the Ratio of IR Window Radiance to Microwave Water Path Variations in the Ratio of IR Window Radiance to Microwave Water Path Observed Under Cloudless Convection Platt, C.M.(a) and Austin, R.T.(b), Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The measurement of the radiance of cirrus (and other) clouds at atmospheric window 8-13 micron wavelengths requires a correction for the water vapor radiance and transmittance below the clouds. Calculating radiances at the times of routine radiosonde ascents and interpolating the radiance/water path ratio between ascents can achieve this. However it has been observed experimentally that IR radiance/water path ratios appear to vary between radiosonde ascents away from the interpolated values. This occurs

424

A COMPARISON OF SPECTRAL DATA FROM TORMAC T IV-a AND T IV-c  

E-Print Network (OSTI)

current Preionization current Shaker heating Interferometer Preionization current Bias field Plasma current Flux

Shaw, R. S.

2011-01-01T23:59:59.000Z

425

NIST Ionizing Radiation Division - 1998  

Science Conference Proceedings (OSTI)

TECHNICAL ACTIVITIES 1998 - NISTIR 6268 IONIZING RADIATION DIVISION. The Neutron Interferometer. The neutron ...

426

Indirect and Semi-Direct Aerosol Campaign: The Impact of Arctic Aerosols on Clouds  

SciTech Connect

A comprehensive dataset of microphysical and radiative properties of aerosols and clouds in the arctic boundary layer in the vicinity of Barrow, Alaska was collected in April 2008 during the Indirect and Semi-Direct Aerosol Campaign (ISDAC) sponsored by the Department of Energy Atmospheric Radiation Measurement (ARM) and Atmospheric Science Programs. The primary aim of ISDAC was to examine indirect effects of aerosols on clouds that contain both liquid and ice water. The experiment utilized the ARM permanent observational facilities at the North Slope of Alaska (NSA) in Barrow. These include a cloud radar, a polarized micropulse lidar, and an atmospheric emitted radiance interferometer as well as instruments specially deployed for ISDAC measuring aerosol, ice fog, precipitation and spectral shortwave radiation. The National Research Council of Canada Convair-580 flew 27 sorties during ISDAC, collecting data using an unprecedented 42 cloud and aerosol instruments for more than 100 hours on 12 different days. Data were obtained above, below and within single-layer stratus on 8 April and 26 April 2008. These data enable a process-oriented understanding of how aerosols affect the microphysical and radiative properties of arctic clouds influenced by different surface conditions. Observations acquired on a heavily polluted day, 19 April 2008, are enhancing this understanding. Data acquired in cirrus on transit flights between Fairbanks and Barrow are improving our understanding of the performance of cloud probes in ice. Ultimately the ISDAC data will be used to improve the representation of cloud and aerosol processes in models covering a variety of spatial and temporal scales, and to determine the extent to which long-term surface-based measurements can provide retrievals of aerosols, clouds, precipitation and radiative heating in the Arctic.

McFarquhar, Greg; Ghan, Steven J.; Verlinde, J.; Korolev, Alexei; Strapp, J. Walter; Schmid, Beat; Tomlinson, Jason M.; Wolde, Mengistu; Brooks, Sarah D.; Cziczo, Daniel J.; Dubey, Manvendra K.; Fan, Jiwen; Flynn, Connor J.; Gultepe, Ismail; Hubbe, John M.; Gilles, Mary K.; Laskin, Alexander; Lawson, Paul; Leaitch, W. R.; Liu, Peter S.; Liu, Xiaohong; Lubin, Dan; Mazzoleni, Claudio; Macdonald, A. M.; Moffet, Ryan C.; Morrison, H.; Ovchinnikov, Mikhail; Shupe, Matthew D.; Turner, David D.; Xie, Shaocheng; Zelenyuk, Alla; Bae, Kenny; Freer, Matthew; Glen, Andrew

2011-02-01T23:59:59.000Z

427

ARM - Publications: Science Team Meeting Documents  

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

and Radiance Relationships Obtained From MISR and CERES Measurements Davies, R., Jet Propulsion Laboratory, California Institute of Technology This goal of this study is to...

428

1  

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

value (Ricchiazzi et al. 1995, Dong et al. 1997). Unlike flux instruments, narrow field-of-view (NFOV) radiometers that measure zenith radiance have the potential to provide...

429

Chemical Characteristics of Fog Water at Mt. Tateyama ... - Springer  

Science Conference Proceedings (OSTI)

direct solar irradiance and the solar aureole radiance distributions, as ..... storms in the arid regions of the Asian continent during the autumn of 2006 can also be ...

430

Building Energy Software Tools Directory: DAYSIM  

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

Free RADIANCE-based daylighting analysis software to predict the annual daylight availability and electric lighting use in arbitrary buildings for manual and automated lighting...

431

Barnard-JC.PDF  

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

* Models, such as Moderate-Resolution Atmospheric Radiance and Transmittance Model (MODTRAN) 3 (Anderson et al. 1995; Berk et al. 1998; Bernstein et al. 1996), can accurately...

432

Improvement of retrieved reflectance in the presence of clouds.  

E-Print Network (OSTI)

??Many algorithms exist to invert airborne imagery from units of either radiance or sensor specific digital counts to units of reflectance. These compensation algorithms remove… (more)

Bartlett, Brent

2007-01-01T23:59:59.000Z

433

Session Papers Preliminary Analysis of Ground-Based Microwave...  

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....

434

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....

435

ARM - Publications: Science Team Meeting Documents  

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

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

436

Microsoft Word - turner-dd2.doc  

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

(ARM) water vapor observations (Revercomb et al. 2003, Turner et al. 2003), and in the retrieval of water vapor and temperature profiles from ground- based radiance observations...

437

FIRE RESEARCH October 13-15, 1992 Rockville, MD  

Science Conference Proceedings (OSTI)

... Total Radiative Heat Loss in Jet Flames porn Singe Point Radiance Measuremen< I? Dutta, YR Sivathanu and JP Gore, Purdue University ..... ...

2004-05-25T23:59:59.000Z

438

OpenStudio  

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

Use Tools for Practitioners Enabling Analysis for Emerging Technologies OpenStudio Software Development Kit (SDK) Modeling Engines (EnergyPlus, Radiance, Others) simuwatt Mobile...

439

STATEMENT OF CONSIDERATIONS REQUEST BY CREE LIGHTING COMPANY...  

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

of the cooperative agreement is to develop high efficiency, high radiance light emitting diode (LED) chip and packaging technology that is expected to lead to novel solid...

440

ARM TR-008  

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

is UTC hour - condensed abnormal conditions report SUMARY.SCR ASCII file containing controls for graphic product displays of summary products RADIANCE.SCR ASCII file containing...

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Research Highlight  

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

of radiance in the far-infrared region of the electromagnetic spectrum. Water vapor absorption in this spectral region affects radiative heating and cooling of the upper...

442

yang-99.PDF  

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

and W. O. Gallery, 1981: Atmospheric spectral transmittance and radiance: FASCOD1B, SPIE. Atmospheric Transmission, 277, 152-166. Goody, R., 1952: A statistical model for water...

443

Beating of Aharonov-Bohm oscillations in a closed-loop interferometer Sanghyun Jo,1,2 Gyong Luck Khym,3 Dong-In Chang,1,2 Yunchul Chung,4,  

E-Print Network (OSTI)

by the mesa formation,8,10­14 the number of trans- verse conducting channels subbands in each left or right arm could be fine tuned by the six side gates. This was a big advantage over mesa-defined AB rings-box region in Fig. 4 a was calculated using the Landauer-Büttiker formula23 G EF,B = 2e2 h n,m 2 EF - En,m B

Lee, Hu-Jong

444

1  

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

Characterization of the Atmospheric State above the SGP Characterization of the Atmospheric State above the SGP Using Raman Lidar and AERI/GOES Measurements R. A. Ferrare National Aeronautics and Space Administration Langley Research Center Hampton, Virginia D. D. Turner Pacific Northwest National Laboratory Richland, Washington L. A. Heilman Science Applications International Corporation National Aeronautics and Space Administration Langley Research Center Hampton, Virginia W. F. Feltz University of Wisconsin Madison, Wisconsin T. P. Tooman Sandia National Laboratories Livermore, California O. Dubovik Science Systems and Applications, Inc. National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland R. N. Halthore Brookhaven National Laboratory Upton, New York

445

Characterization of an advanced LIGO quadruple pendulum system  

E-Print Network (OSTI)

The Laser Interferometer Gravitational-wave Observatory (LIGO) measures relative displacements of the interferometer mirrors induced by passing gravitational waves (GWs). At low frequencies, typically below 30 Hz, seismic ...

Thomas, Andrew C. (Andrew Christopher), 1981-

2004-01-01T23:59:59.000Z

446

Scientific Assessment of the SWIFT Instrument Design  

Science Conference Proceedings (OSTI)

The Stratospheric Wind Interferometer For Transport studies (SWIFT) is a proposed satellite instrument. SWIFT is an imaging, field-widened Doppler Michelson interferometer. It observes a thermal IR atmospheric emission line in a limb-viewing ...

Peyman Rahnama; William A. Gault; Ian C. McDade; Gordon G. Shepherd

447

A high-frequency gravitational-wave burst search with LIGO's Hanford site  

E-Print Network (OSTI)

The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a network of long-arm interferometers designed to directly measure gravitational-wave strain. Direct observation of gravitational waves would provide a test ...

Villadsen, Jacqueline Rose

2009-01-01T23:59:59.000Z

448

A high-frequency gravitational-wave burst search with LIGO's Hanford site.  

E-Print Network (OSTI)

??The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a network of long-arm interferometers designed to directly measure gravitational-wave strain. Direct observation of gravitational waves would provide… (more)

Villadsen, Jacqueline Rose

2009-01-01T23:59:59.000Z

449

J. Pbys. II France 2 (1992) 27-44 JANUARY 1992, PAGE 27 Classification  

E-Print Network (OSTI)

was measured using a Michelson interferometer (Ealing Electrc-Optics 25-0084) combined with detached parts from

Paris-Sud XI, Université de

450

Neutron Physics Group  

Science Conference Proceedings (OSTI)

... spectrum and fluencies is essential for several ... Neutron Interferometer and Optics Facility performed a ... other neutron scattering facilities depends on ...

2011-10-24T23:59:59.000Z

451

PowerPoint Presentation  

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

SAM Data SAM Data Cirrus (OD=1.6) Altostratus (OD = 1.3) 10 +3 10 +1 10 -1 Radiance (W/cm 2 /sr/µm) 0.01 0.10 10.0 1.00 Angle From Center of Sun (deg) SAM Data Cirrus (OD=1.6) Altostratus (OD = 1.3) 10 +3 10 +1 10 -1 Radiance (W/cm 2 /sr/µm) 0.01 0.10 10.0 1.00 Angle From Center of Sun (deg) 10 +3 10 +1 10 -1 Radiance (W/cm 2 /sr/µm) 8 4 8 4 Angle From Center of Sun (deg) 0 10 +3 10 +1 10 -1 Radiance (W/cm 2 /sr/µm) 8 4 8 4 Angle From Center of Sun (deg) 0 Radiance (W/cm 2 /sr) 550 ± 40 nm 10 +2 10 +0 10 -2 10 -4 10 -6 Elevation (pixels) Azimuth (pixels) 10 +3 10 +1 10 -1 Radiance (W/cm 2 /sr/µm) 8 4 8 4 Angle From Center of Sun (deg) 0 10 +3 10 +1 10 -1 Radiance (W/cm 2 /sr/µm) 8 4 8 4 Angle From Center of Sun (deg) 0 Radiance (W/cm 2 /sr) 550 ± 40 nm 10 +2 10 +0 10 -2 10 -4 10 -6 Elevation (pixels) Azimuth (pixels) Introducing SAM (Sun and Aureole Measurement),

452

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

E-Print Network (OSTI)

using the radiative transfer code MODTRAN. In addition, the derivation of the diffuse ir- radiance calcula- tions. These calculations have been performed using the computer code MODTRAN (Kneizys et al. 1996). 3.1. Atmospheric backscattering For the MODTRAN simulation of the radiance re- flected

Heinemann, Detlev

453

Near-surface air temperature estimation from ASTER data based on neural network algorithm  

Science Conference Proceedings (OSTI)

An algorithm based on the radiance transfer model (MODTRAN4) and a dynamic learning neural network for estimation of near-surface air temperature from ASTER data are developed in this paper. MODTRAN4 is used to simulate radiance transfer from the ground ...

K. B. Mao; H. J. Tang; X. F. Wang; Q. B. Zhou; D. L. Wang

2008-10-01T23:59:59.000Z

454

Calibration of METEOSAT Infrared Radiometer using Split Window Channels of NOAA AVHRR  

Science Conference Proceedings (OSTI)

A multispectral/multiangular procedure is proposed to calibrate the infrared channel of METEOSAT-2 IR 1 (760–980 cm?1), using the radiances of NOAA-7 AVHRR channels 4 (870–980 cm?1) and 5 (795–885 cm?1). The METEOSAT radiance can be successfully ...

A. Asem; P. Y. Deschamps; D. Ho

1987-12-01T23:59:59.000Z

455

ARM - Datastreams - avhrr12  

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

2 2 Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AVHRR12 AVHRR: albedo and brightness temp., NOAA-12 Satellite Active Dates 1994.07.22 - 2007.08.09 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Shortwave narrowband radiance avhrr_ch1 Shortwave narrowband radiance avhrr_ch2 Longwave narrowband radiance avhrr_ch3 Longwave narrowband radiance avhrr_ch4 Longwave narrowband radiance avhrr_ch5 Locations North Slope Alaska NSA X1 Browse Data External Data (satellites and others)

456

ARM - Datastreams - avhrr10  

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

Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AVHRR10 AVHRR: albedo and brightness temp., NOAA-10 Satellite Active Dates 1994.09.15 - 1999.10.09 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Shortwave narrowband radiance avhrr_ch1 Shortwave narrowband radiance avhrr_ch2 Longwave narrowband radiance avhrr_ch3 Longwave narrowband radiance avhrr_ch4 Longwave narrowband radiance avhrr_ch5 Locations North Slope Alaska NSA X1 Browse Data External Data (satellites and others)

457

Lighting Group: Software  

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

Software Software Lighting Software The Lighting Group has developed several computer programs in the course of conducting research on energy efficient lighting. Several of these programs have proven useful outside the research environment. One of the most popular programs for advanced lighting applications is Radiance. For more information on this program and its availability, click on the link below. RADIANCE Radiance is a suite of programs for the analysis and visualization of lighting in design. The primary advantage of Radiance over simpler lighting calculation and rendering tools is that there are no limitations on the geometry or the materials that may be simulated. Radiance is used by architects and engineers to predict illumination, visual quality and appearance of innovative design spaces, and by researchers to evaluate new

458

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

459

Posters Comparisons of Brightness Temperature Measurements and Calculations Obtained  

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

Posters Comparisons of Brightness Temperature Measurements and Calculations Obtained During the Spectral Radiance Experiment Y. Han, J. B. Snider, and E. R. Westwater National Oceanic and Atmospheric Administration Environmental Research Laboratories/Environmental Technology Laboratory Boulder, Colorado S. H. Melfi National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland R. A. Ferrare Hughes STX Corporation Lanham, Maryland Introduction In radiometric remote sensing of the atmosphere, the ability to calculate radiances from underlying state variables is fundamental. To infer temperature and water vapor profiles from satellite- or ground-based radiometers, one must determine cloud-free regions and then calculate clear-sky radiance emerging from the top of the earth's

460

Practical Atmospheric Correction Algorithms for a Multi-Spectral Sensor From the Visible Through the Thermal Spectral Regions  

Science Conference Proceedings (OSTI)

Deriving information about the Earth's surface requires atmospheric corrections of the measured top-of-the-atmosphere radiances. One possible path is to use atmospheric radiative transfer codes to predict how the radiance leaving the ground is affected by the scattering and attenuation. In practice the atmosphere is usually not well known and thus it is necessary to use more practical methods. The authors will describe how to find dark surfaces, estimate the atmospheric optical depth, estimate path radiance and identify thick clouds using thresholds on reflectance and NDVI and columnar water vapor. The authors describe a simple method to correct a visible channel contaminated by a thin cirrus clouds.

Borel, C.C.; Villeneuve, P.V.; Clodium, W.B.; Szymenski, J.J.; Davis, A.B.

1999-04-04T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

ARM - Publications: Science Team Meeting Documents  

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

Absolute Radiance Calibration Techniques for the Whole Sky Imager Absolute Radiance Calibration Techniques for the Whole Sky Imager Shields, J.E. (a), Johnson, R.W. (a), Tooman, T.P. (b), Karr, M.E. (a), Burden, A.R. (a), and Baker, J.G. (a), Scripps Institution of Oceanography (a), Sandia National Laboratories (b) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The Day/Night Whole Sky Imager is designed to provide absolute radiance distributions over the full upper hemisphere, as well as providing an assessment of cloud fraction and cloud spatial properties. In order to provide radiance distributions, the instrument must be calibrated using absolute radiometry techniques adapted for use with an imager. These techniques are particularly demanding due to the large dynamic range required to acquire data from full daylight to starlight. For example, a

462

Advances in Radiative Transfer Modeling in Support of Satellite Data Assimilation  

Science Conference Proceedings (OSTI)

Development of fast and accurate radiative transfer models for clear atmospheric conditions has enabled direct assimilation of clear-sky radiances from satellites in numerical weather prediction models. In this article, fast radiative transfer ...

Fuzhong Weng

2007-11-01T23:59:59.000Z

463

One-Dimensional Variational Data Assimilation of SSM/I Observations in Rainy Atmospheres at MSC  

Science Conference Proceedings (OSTI)

Currently, satellite radiances in the Canadian Meteorological Centre operational data assimilation system are only assimilated in clear skies. A two-step method, developed at the European Centre for Medium-Range Weather Forecasts, is considered ...

G. Deblonde; J-F. Mahfouf; B. Bilodeau; D. Anselmo

2007-01-01T23:59:59.000Z

464

An Interactive Method for Processing and Display of Sea-Surface Temperature Fields Using VAS Multispectral Data  

Science Conference Proceedings (OSTI)

A technique for interactively producing sea-surface temperatures (SST)from VAS multispectral radiance observations and displaying the derived field is outlined. High-resolution composite images using data from several times per day and over a ...

John J. Bates; William L. Smith; Gary S. Wade; Harold M. Woo1f

1987-06-01T23:59:59.000Z

465

Assessing a Cloud Optical Depth Retrieval Algorithm with Model-Generated Data and the Frozen Turbulence Assumption  

Science Conference Proceedings (OSTI)

A cloud optical depth retrieval algorithm that utilizes time series of solar irradiance and zenith downwelling radiance data collected at a fixed surface site is assessed using model-generated cloud fields and simulated radiation measurements. To ...

H. W. Barker; C. F. Pavloski; M. Ovtchinnikov; E. E. Clothiaux

2004-12-01T23:59:59.000Z

466

Characterization of Some Elements of the Sahelian Climate and Their Interannual Variations for July 1983, 1984 and 1985 from the Analysis of METEOSAT ISCCP Data  

Science Conference Proceedings (OSTI)

METEOSAT infrared and water vapor radiance data from the ISCCP dataset are used to describe climatic characteristics for the months of July 1983, 1984 and 1985, corresponding to very different rainy seasons in Sahelian Africa. Mean cloudiness ...

Michel Desbois; Théoneste Kayiranga; Brigitte Gnamien; Saad Guessous; Laurence Picon

1988-09-01T23:59:59.000Z

467

Radiometric Characterization and Absolute Calibration of the Marine Optical System (MOS) Bench Unit  

Science Conference Proceedings (OSTI)

The Marine Optical System (MOS) is a dual charge-coupled device (CCD)-based spectrograph system developed for in-water measurements of downwelling solar irradiance Ed and upwelling radiance Lu. These measurements are currently used in the ...

Catherine Habauzit; Steven W. Brown; Keith R. Lykke; B. Carol Johnson; Michael E. Feinholz; Mark Yarbrough; Dennis K. Clark

2003-03-01T23:59:59.000Z

468

Application of Feature Calibration and Alignment to High-resolution Analysis: Examples Using Observations Sensitive to Cloud and Water Vapor  

Science Conference Proceedings (OSTI)

Alignment errors, i.e. cases where coherent structures (“features”) of clouds or precipitation in the background have position errors, can lead to large and non-Gaussian background errors. Assimilation of cloud-affected radiances using additive ...

Thomas Nehrkorn; Bryan Woods; Thomas Auligné; Ross N. Hoffman

469

The Structure of the Ground-Level Heat Island in a Central Business District  

Science Conference Proceedings (OSTI)

Ground level temperature variations in Johannesburg were estimated from airborne infrared scanner images. During predawn flights over the city center and vicinity, radiances were observed from a 1-km wide swath under clear skies with a strong ...

Y. Goldreich

1985-11-01T23:59:59.000Z

470

Satellite-Derived Sea Surface Temperatures: Evaluation of GOES-8 and GOES-9 Multispectral Imager Retrieval Accuracy  

Science Conference Proceedings (OSTI)

Sea surface temperature (SST) retrieval accuracy from the multispectral imager on the new generation of GOES satellites is analyzed. Equations for two and three infrared channels are empirically derived using cloud-free satellite radiances ...

Douglas A. May; Walter O. Osterman

1998-06-01T23:59:59.000Z

471

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

472

Operational Validation of the MOPITT Instrument Optical Filters  

Science Conference Proceedings (OSTI)

Optical bandpass filters in the Measurements of Pollution in the Troposphere (MOPITT) satellite remote sensing instrument selectivity limit the throughput radiance to absorptive spectral bands associated with the satellite-observed trace gases CO ...

M. N. Deeter; G. L. Francis; D. P. Edwards; J. C. Gille; E. McKernan; James R. Drummond

2002-11-01T23:59:59.000Z

473

Satellite-Inferred Morning-to-Evening Cloudiness Changes  

Science Conference Proceedings (OSTI)

Outgoing infrared radiation (IR) values inferred from radiance measurements in the water vapor window (10.5–12.5 ?m) taken at approximately 0900 and 2100 LT by scanning radiometers aboard the polar orbiting NOAA satellites are compared in order ...

David A. Short; John M. Wallace

1980-08-01T23:59:59.000Z

474

Regularizing the Satellite Temperature-Retrieval Problem through Singular-Value Decomposition of the Radiative Transfer Physics  

Science Conference Proceedings (OSTI)

A new method is derived for retrieving atmospheric temperature profiles from satellite-measured spectral radiance that appears, in first tests, to effectively circumvent certain difficulties of other well-known and implemented methods. In ...

Owen E. Thompson

1992-10-01T23:59:59.000Z

475

Improved Normalization of the Size Distribution of Atmospheric Particles Retrieved from Aureole Measurements Using the Diffraction Approximation  

Science Conference Proceedings (OSTI)

This paper describes an improvement in the diffraction approximation used to retrieve the size distribution of atmospheric particles from solar aureole radiance measurements. Normalization using total optical thickness based on measurement of the ...

J. G. DeVore

2011-08-01T23:59:59.000Z

476

Performance Characteristics of Integrating Nephelometers in the Australian Outback  

Science Conference Proceedings (OSTI)

Radiance Research M903 nephelometers have been operated at remote Australian Outback sites since April 1998. This paper describes the calibration procedures applied to these instruments and reports on the noise performance and other operational ...

R. M. Mitchell; S. K. Campbell; Y. Qin; J. L. Gras

2009-05-01T23:59:59.000Z

477

Understanding Thermal Drift in Liquid Nitrogen Loads Used for Radiometric Calibration in the Field  

Science Conference Proceedings (OSTI)

An absorbing load in a liquid nitrogen bath is commonly used as a radiance standard for calibrating radiometers operating at microwave to infrared wavelengths. It is generally assumed that the physical temperature of the load is stable and equal ...

Scott N. Paine; David D. Turner; Nils Küchler

478

1  

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

Tenth ARM Science Team Meeting Proceedings, San Antonio, Texas, March 13-17, 2000 1 The Effect of Surface Albedo Heterogeneity on Sky Radiance P. J. Ricchiazzi Institute for...

479

Global Gravity Wave Variances from Aura MLS: Characteristics and Interpretation  

Science Conference Proceedings (OSTI)

The gravity wave (GW)–resolving capabilities of 118-GHz saturated thermal radiances acquired throughout the stratosphere by the Microwave Limb Sounder (MLS) on the Aura satellite are investigated and initial results presented. Because the ...

Dong L. Wu; Stephen D. Eckermann

2008-12-01T23:59:59.000Z

480

Cloud Identification for ERBE Radiative Flux Retrieval  

Science Conference Proceedings (OSTI)

Derivation of top of atmosphere radiative fluxes requires the use of measured satellite radiances and assumptions about the anisotropy of the Earth's radiation field. The primary modification of the Earth's anisotropy is caused by variations in ...

Bruce A. Wielicki; Richard N. Green

1989-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiance interferometer aeri" 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

Microwave Simulations of a Tropical Rainfall System with a Three-Dimensional Cloud Model  

Science Conference Proceedings (OSTI)

A three-dimensional cloud model-microwave radiative transfer model combination is used to study the relations among the precipitation and other microphysical characteristics of a tropical oceanic squall line and the upwelling radiance at ...

Robert F. Adler; Hwa-Young M. Yeh; N. Prasad; Wei-Kuo Tao; Joanne Simpson

1991-07-01T23:59:59.000Z

482

A Study of Global Aerosol Optical Climatology with Two-Channel AVHRR Remote Sensing  

Science Conference Proceedings (OSTI)

Global distributions of the aerosol optical thickness and Ångström exponent are estimated from National Oceanic and Atmospheric Administration Advanced Very High Resolution Radiometer channel-1 and -2 radiances for four months in 1990. Global ...

Akiko Higurashi; Teruyuki Nakajima; Brent N. Holben; Alexander Smirnov; Robert Frouin; Bernadette Chatenet

2000-06-01T23:59:59.000Z

483

Cloud detection of MODIS multispectral images  

Science Conference Proceedings (OSTI)

Methods coming from statistics and pattern recognition to estimate the cloud mask from radiance measured by visible and infrared sensors onboard satellites are gaining greater and greater consideration for their ability to properly exploit the ...

Loredana Murino; Umberto Amato; Maria Francesca Carfora; Anestis Antoniadis; Bormin Huang; W. Paul Menzel; Carmine Serio

484

Field Experiment for Measurement of the Radiative Characteristics of a Hazy Atmosphere  

Science Conference Proceedings (OSTI)

Theoretical two-and three-dimensional solutions to the radiative transfer equation have been applied to the earth-atmosphere system. A field experiment was conducted to test this theory. in the experiment the upward radiance was measured above ...

Y. J. Kaufman; T. W. Brakke; E. Eloranta

1986-06-01T23:59:59.000Z

485

ORNL DAAC: Amazon Data Release  

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

Radiance Data Set Released The ORNL DAAC announces the release of a data set associated with the LBA-ECO component of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia...

486

A Physical Method for the Calibration of the AVHRR/3 Thermal IR Channels 1: The Prelaunch Calibration Data  

Science Conference Proceedings (OSTI)

The absolute accuracy of the thermal infrared (IR) radiances and brightness temperatures derived from the Advanced Very High Resolution Radiometer (AVHRR) is still unknown, with major sources of error not yet fully understood. This is despite the ...

Jonathan P. D. Mittaz; Andrew R. Harris; Jerry T. Sullivan

2009-05-01T23:59:59.000Z

487

A Technique for Mapping the Distribution of Diffuse Solar Radiation over the Sky Hemisphere  

Science Conference Proceedings (OSTI)

A technique to map the distribution of diffuse solar radiation over the sky hemisphere is described. The method is based on an analysis of all-sky, visible photographs and concurrent actinometric measurements of diffuse solar radiance. The ...

L. J. Bruce McArthur; John E. Hay

1981-04-01T23:59:59.000Z

488

Model Rain and Clouds over Oceans: Comparison with SSM/I Observations  

Science Conference Proceedings (OSTI)

A comparison of global model cloud and rain parameterization output with satellite observed radiances was carried out. Hydrometeor profiles from ECMWF operational short-range forecasts were combined with a microwave radiative transfer model to ...

Frédéric Chevallier; Peter Bauer

2003-07-01T23:59:59.000Z

489

A Classification Scheme for Satellite Temperature Retrievals  

Science Conference Proceedings (OSTI)

A new approach is presented to the problem of specifying constraints on retrieval estimators used to calculate vertical temperature profiles from satellite measurements of upwelling radiance. An unsupervised classification scheme determines the ...

M. J. Uddstrom; D. Q. Wark

1985-01-01T23:59:59.000Z

490

Impact of Increased TOVS Signal on the NMC Global Spectral Model: A Tropical-Plume Case Study  

Science Conference Proceedings (OSTI)

Information exists in tropical operational TIROS Operational Vertical Sounder (TOVS) radiance observations that is not utilized by operational sounding retrieval and analysis-initialization schemes. Temperature and moisture signals are extracted ...

James P. McGuirk

1993-03-01T23:59:59.000Z

491

Assessment of Shortwave Infrared Sea Surface Reflection and Nonlocal Thermodynamic Equilibrium Effects in the Community Radiative Transfer Model Using IASI Data  

Science Conference Proceedings (OSTI)

The nadir-viewing satellite radiances at shortwave infrared channels from 3.5 to 4.6 ?m are not currently assimilated in operational numerical weather prediction data assimilation systems and are not adequately corrected for applications of ...

Yong Chen; Yong Han; Paul van Delst; Fuzhong Weng

2013-09-01T23:59:59.000Z

492

An Assessment of the Parameterization of Subgrid-Scale Cloud Effects on Radiative Transfer. Part II: Horizontal Inhomogeneity  

Science Conference Proceedings (OSTI)

The role of horizontal inhomogeneity in radiative transfer through cloud fields is investigated within the context of the two-stream approximation. Spatial correlations between cloud optical properties and the radiance field are introduced in the ...

Norman B. Wood; Philip M. Gabriel; Graeme L. Stephens

2005-08-01T23:59:59.000Z

493

THERMO International 2006  

Science Conference Proceedings (OSTI)

... 4:15 PM Radiance Temperature and Normal Spectral Emittance (In the Wavelength Range of 1.5 to 5 Micron) of Nickel at Its Melting Point by a ...

2006-07-05T23:59:59.000Z

494

A Spectral Approach to the Unification of Satellite and Conventional Temperature Data  

Science Conference Proceedings (OSTI)

A new method to combine temperature soundings derived from VAS radiance observations with conventional data is proposed. Unlike similar previous attempts, only a portion of the signal contained in the VAS temperature soundings was combined with ...

Kyung-Sup Shin; James R. Scoggins

1988-08-01T23:59:59.000Z

495

Offshore Tower Shading Effects on In-Water Optical Measurements  

Science Conference Proceedings (OSTI)

A field campaign was performed to estimate the shading effect induced on in-water irradiance and radiance measurements taken in the immediate vicinity of the Acqua Alta Oceanographic Tower (AAOT), located in the northern Adriatic Sea, which is ...

Giuseppe Zibordi; John Piero Doyle; Stanford B. Hooker

1999-11-01T23:59:59.000Z

496

Angular Distribution Models for Top-of-Atmosphere Radiative Flux Estimation from the Clouds and the Earth's Radiant Energy System Instrument on the Tropical Rainfall Measuring Mission Satellite. Part II: Validation  

Science Conference Proceedings (OSTI)

Top-of-atmosphere (TOA) radiative fluxes from the Clouds and the Earth's Radiant Energy System (CERES) are estimated from empirical angular distribution models (ADMs) that convert instantaneous radiance measurements to TOA fluxes. This paper ...

Norman G. Loeb; Konstantin Loukachine; Natividad Manalo-Smith; Bruce A. Wielicki; David F. Young

2003-12-01T23:59:59.000Z

497

Twilight Irradiance Reflected by the Earth Estimated from Clouds and the Earth's Radiant Energy System (CERES) Measurements  

Science Conference Proceedings (OSTI)

The upward shortwave irradiance at the top of the atmosphere when the solar zenith angle is greater than 90° (twilight irradiance) is estimated from radiance measurements by the Clouds and the Earth's Radiant Energy System (CERES) instrument on ...

Seiji Kato; Norman G. Loeb

2003-08-01T23:59:59.000Z

498

An Observational Study of High-Latitude Stratospheric Planetary Waves in Winter  

Science Conference Proceedings (OSTI)

Nimbus 4 and 5 radiances, representing temperatures in the upper and lower stratosphere, are analyzed to obtain power and coherence squared spectra at high latitudes during the winters of both hemispheres. The spectra for zonal wavenumbers 1–3 ...

David E. Venne; John L. Stanford

1982-05-01T23:59:59.000Z

499

A Multipurpose Scanning Spectral Polarimeter (SSP): Instrument Description and Sample Results  

Science Conference Proceedings (OSTI)

This paper describes the design and characteristics of a scanning spectral polarimeter designed to measure spectral radiances and fluxes in the range between 0.4 and 4.0 ?m. The instrument characteristics are described, and the procedures to ...

Graeme L. Stephens; Robert F. McCoy Jr.; Renata B. McCoy; Philip Gabriel; Philip T. Partain; Steven D. Miller; Steven P. Love

2000-05-01T23:59:59.000Z

500

Assessment of Shortwave Infrared Sea Surface Reflection and Nonlocal Thermodynamic Equilibrium Effects in Community Radiative Transfer Model Using IASI Data  

Science Conference Proceedings (OSTI)

The nadir-viewing satellite radiances at shortwave infrared channels from 3.5 ?m to 4.6 ?m are not currently assimilated in operational numerical weather prediction data assimilation systems and are not adequately corrected for applications of ...

Yong Chen; Yong Han; Paul van Delst; Fuzhong Weng