National Library of Energy BETA

Sample records for radiance interferometer radiometric

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

    DOE Data Explorer [Office of Scientific and Technical Information (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 DOEs 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 Wisconsins 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.

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

    DOE Data Explorer [Office of Scientific and Technical Information (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.

  3. A Principal Component Analysis Noise Filter Value-Added Procedure to Remove Uncorrelated Noise from Atmospheric Emitted Radiance Interferometer (AERI) Observations

    SciTech Connect (OSTI)

    C. Lo D. D. Turner R. O. Knuteson

    2006-01-31

    This technical report provide a short description of the application of the principle component analysis techniques to remove uncorrelated random noise from ground-based high spectral resolution infrared radiance observations collected by the atmospheric emitted radiance interferometers (AERIs) deployed by the Atmospheric Radiation Measurement (ARM) Program. A general overview of the technique, the input, and output datastreams of the newly generated value-added product, and the data quality checks used are provided. A more complete discussion of the theory and results is given in Turner et al. (2006).

  4. An Evaluation of the Nonlinearity Correction Applied to Atmospheric Emitted Radiance Interferometer (AERI) Data Collected by the Atmospheric Radiation Measurement Program

    SciTech Connect (OSTI)

    Turner, DD; Revercomb, HE; Knuteson, RO; Dedecker, RG; Feltz, WF

    2004-09-01

    Mercury Cadmium Telluride (MCT) detectors provide excellent sensitivity to infrared radiation and are used in passive infrared remote sensors such as the Atmospheric Emitted Radiance Interferometer (AERI). However, MCT detectors have a nonlinear response and thus this nonlinearity must be characterized and corrected to provide accurate infrared radiance observations. This paper discusses the significance of the nonlinearity correction applied to AERI data and its impacts on the parameters retrieved from the AERI spectra. It also evaluates the accuracy of the scheme used to determine the nonlinearity of the MCT detectors used in the Atmospheric Radiation Measurement (ARM) Programs AERIs.

  5. ARM - Measurement - Longwave spectral radiance

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

    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

  6. ARM - Measurement - Shortwave spectral radiance

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

    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 : Shortwave spectral radiance The rate at which the spectrally resolved radiant energy in the shortwave 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

  7. Posters Atmospheric Emitted Radiance Interferometer: Status and...

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

    H. E. Revercomb, R. O. Knuteson, W. L. Smith, F. A. Best, and R. G. Dedecker University of ... and in several conference publications (Revercomb et al. 1993, 1994; Smith et al. 1993). ...

  8. Posters Atmospheric Emitted Radiance Interferometer Data Analysis...

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

    Analysis Methods R. O. Knuteson, W. L. Smith, S. A. Ackerman, H. E. Revercomb, H. ... project under the direction of William L. Smith of the University of Wisconsin-Madison. ...

  9. Radiance | Department of Energy

    Energy Savers [EERE]

    Radiance Radiance Radiance rendering of daylighting and electric lighting for the retrofit of the New York Times offices in New York.<br /> Image credit: Andrew McNeil, LBNL. Radiance rendering of daylighting and electric lighting for the retrofit of the New York Times offices in New York. Image credit: Andrew McNeil, LBNL. In FY14, LBNL implemented a new method for controlling error in diffuse inter-reflection calculations. This method improves the time-quality (or accuracy) trade-off by

  10. Radiance Solar | Open Energy Information

    Open Energy Info (EERE)

    Radiance Solar Jump to: navigation, search Name: Radiance Solar Place: Atlanta, Georgia Zip: 30318 Product: Commercial and residential PV installer based in Atlanta. Coordinates:...

  11. Radiance: Synthetic Imaging System | Open Energy Information

    Open Energy Info (EERE)

    tools User Interface: Desktop Application Website: radsite.lbl.govradiance Cost: Free References: Radiance1 Logo: RADIANCE RADIANCE is a highly accurate ray-tracing...

  12. ZYGO Mark Ivxp Interferometer

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

    ZYGO Mark Ivxp Interferometer Back to Equipment

  13. Facility for spectral irradiance and radiance responsivity calibrations using uniform sources

    SciTech Connect (OSTI)

    Brown, Steven W.; Eppeldauer, George P.; Lykke, Keith R

    2006-11-10

    Detectors have historically been calibrated for spectral power responsivity at the National Institute of Standards and Technology by using a lamp-monochromator system to tune the wavelength of the excitation source. Silicon detectors can be calibrated in the visible spectral region with combined standard uncertainties at the 0.1% level. However,uncertainties increase dramatically when measuring an instrument's spectral irradiance or radiance responsivity. We describe what we believe to be a new laser-based facility for spectral irradiance and radiance responsivity calibrations using uniform sources (SIRCUS) that was developed to calibrate instruments directly in irradiance or radiance mode with uncertainties approaching or exceeding those available for spectral power responsivity calibrations. In SIRCUS, the emission from high-power, tunable lasers is introduced into an integrating sphere using optical fibers, producing uniform, quasi-Lambertian, high-radiant-flux sources. Reference standard irradiance detectors, calibrated directly against national primary standards for spectral power responsivity and aperture area measurement,are used to determine the irradiance at a reference plane. Knowing the measurement geometry, the source radiance can be readily determined as well. The radiometric properties of the SIRCUS source coupled with state-of-the-art transfer standard radiometers whose responsivities are directly traceable to primary national radiometric scales result in typical combined standard uncertainties in irradiance and radiance responsivity calibrations of less than 0.1%. The details of the facility and its effect on primary national radiometric scales are discussed.

  14. Radiometrics | Open Energy Information

    Open Energy Info (EERE)

    Prospects In Northern Nevada Radiometrics At Roosevelt Hot Springs Geothermal Area (Petersen, 1975) Roosevelt Hot Springs Geothermal Area 1975 1975 Geology and Geothermal...

  15. The ARM Atmospheric Emitted Radiance Interferometer (AERI): Status...

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

    sites and an AERI is in operation as part of the ARM mobile facility currently in Niger, Africa. Recent upgrades in AERI instrumentation and enhancements in operational data...

  16. ARM - Measurement - Shortwave broadband radiance

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

    Send Measurement : Shortwave broadband radiance A measure of the intrinsic radiant energy flux intensity, at wavelengths between 0.4 and 4 mu, emitted by a radiator in a...

  17. ARM - Measurement - Shortwave narrowband radiance

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

    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...

  18. ARM - SGP Radiometric Calibration Facility

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

    Radiometric Calibration Facility SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Radiometric Calibration Facility The Radiometric Calibration Facility (RCF) provides shortwave radiometer calibrations traceable

  19. ARM - Field Campaign - Absolute Solar Transmittance Interferometer (ASTI)

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

    govCampaignsAbsolute Solar Transmittance Interferometer (ASTI) 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 Campaign : Absolute Solar Transmittance Interferometer (ASTI) 1999.03.01 - 1999.03.31 Lead Scientist : Frank Murcray For data sets, see below. Summary Spring 1999 IOP 3-Mar-1999 ASTI-1 20-Mar-1999 ASTI-1 21-Mar-1999 ASTI-1 Abstract Radiometrically calibrated solar spectra obtained during March 1999.

  20. ANALYSIS WITH RADIOACTIVE REAGENTS AND RADIOMETRIC TITRATION...

    Office of Scientific and Technical Information (OSTI)

    & Separations Chemistry-- Radiometric & Radiochemical Procedures; CHEMICAL ANALYSIS; COMPLEXES; DETERMINATION; PRECIPITATION; RADIOISOTOPES; SEPARATION PROCESSES; TITRATION...

  1. Phase shifting interferometer

    DOE Patents [OSTI]

    Sommargren, G.E.

    1999-08-03

    An interferometer is disclosed which has the capability of measuring optical elements and systems with an accuracy of {lambda}/1000 where {lambda} is the wavelength of visible light. Whereas current interferometers employ a reference surface, which inherently limits the accuracy of the measurement to about {lambda}/50, this interferometer uses an essentially perfect spherical reference wavefront generated by the fundamental process of diffraction. Whereas current interferometers illuminate the optic to be tested with an aberrated wavefront which also limits the accuracy of the measurement, this interferometer uses an essentially perfect spherical measurement wavefront generated by the fundamental process of diffraction. This interferometer is adjustable to give unity fringe visibility, which maximizes the signal-to-noise, and has the means to introduce a controlled prescribed relative phase shift between the reference wavefront and the wavefront from the optics under test, which permits analysis of the interference fringe pattern using standard phase extraction algorithms. 11 figs.

  2. Phase shifting interferometer

    DOE Patents [OSTI]

    Sommargren, Gary E. (Santa Cruz, CA)

    1999-01-01

    An interferometer which has the capability of measuring optical elements and systems with an accuracy of .lambda./1000 where .lambda. is the wavelength of visible light. Whereas current interferometers employ a reference surface, which inherently limits the accuracy of the measurement to about .lambda./50, this interferometer uses an essentially perfect spherical reference wavefront generated by the fundamental process of diffraction. Whereas current interferometers illuminate the optic to be tested with an aberrated wavefront which also limits the accuracy of the measurement, this interferometer uses an essentially perfect spherical measurement wavefront generated by the fundamental process of diffraction. This interferometer is adjustable to give unity fringe visibility, which maximizes the signal-to-noise, and has the means to introduce a controlled prescribed relative phase shift between the reference wavefront and the wavefront from the optics under test, which permits analysis of the interference fringe pattern using standard phase extraction algorithms.

  3. Phase shifting diffraction interferometer

    DOE Patents [OSTI]

    Sommargren, Gary E. (Santa Cruz, CA)

    1996-01-01

    An interferometer which has the capability of measuring optical elements and systems with an accuracy of .lambda./1000 where .lambda. is the wavelength of visible light. Whereas current interferometers employ a reference surface, which inherently limits the accuracy of the measurement to about .lambda./50, this interferometer uses an essentially perfect spherical reference wavefront generated by the fundamental process of diffraction. This interferometer is adjustable to give unity fringe visibility, which maximizes the signal-to-noise, and has the means to introduce a controlled prescribed relative phase shift between the reference wavefront and the wavefront from the optics under test, which permits analysis of the interference fringe pattern using standard phase extraction algorithms.

  4. Phase shifting diffraction interferometer

    DOE Patents [OSTI]

    Sommargren, G.E.

    1996-08-29

    An interferometer which has the capability of measuring optical elements and systems with an accuracy of {lambda}/1000 where {lambda} is the wavelength of visible light. Whereas current interferometers employ a reference surface, which inherently limits the accuracy of the measurement to about {lambda}/50, this interferometer uses an essentially perfect spherical reference wavefront generated by the fundamental process of diffraction. This interferometer is adjustable to give unity fringe visibility, which maximizes the signal-to-noise, and has the means to introduce a controlled prescribed relative phase shift between the reference wavefront and the wavefront from the optics under test, which permits analysis of the interference fringe pattern using standard phase extraction algorithms. 8 figs.

  5. Dual surface interferometer

    DOE Patents [OSTI]

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

    1980-09-12

    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.

  6. Super-radiance and open quantum systems

    SciTech Connect (OSTI)

    Volya, Alexander [Department of Physics, Florida State University, Tallahassee, FL 32306-4350 (United States); Zelevinsky, Vladimir [NSCL, Michigan State University, East Lansing, MI 48824-1321 (United States); Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-1321 (United States)

    2005-07-08

    Quantum wires, loosely bound nuclei, molecules in chemical reactions and exotic narrow pentaquark states are different examples of open quantum mesoscopic systems. The coupling with and through continuum is their common feature. We discuss general properties of quantum systems in the regime of strong continuum coupling, when the mechanism of Dicke super-radiance changes intrinsic dynamics, signatures of quantum chaos, lifetime of unstable states and reaction cross sections. The examples are shown for various areas of mesoscopic physics.

  7. Posters Ground-Based Radiometric Observations

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

    data have also complemented other remote sensors such as K-band cloud Doppler radar and Doppler lidar. In addition, radiometric observations compose a database of ground- truth...

  8. Design, manufacture, and calibration of infrared radiometric blackbody sources

    SciTech Connect (OSTI)

    Byrd, D.A.; Michaud, F.D.; Bender, S.C.

    1996-04-01

    A Radiometric Calibration Station (RCS) is being assembled at the Los Alamos National Laboratories (LANL) which will allow for calibration of sensors with detector arrays having spectral capability from about 0.4-15 {mu}m. The configuration of the LANL RCS. Two blackbody sources have been designed to cover the spectral range from about 3-15 {mu}m, operating at temperatures ranging from about 180-350 K within a vacuum environment. The sources are designed to present a uniform spectral radiance over a large area to the sensor unit under test. The thermal uniformity requirement of the blackbody cavities has been one of the key factors of the design, requiring less than 50 mK variation over the entire blackbody surface to attain effective emissivity values of about 0.999. Once the two units are built and verified to the level of about 100 mK at LANL, they will be sent to the National Institute of Standards and Technology (NIST), where at least a factor of two improvement will be calibrated into the blackbody control system. The physical size of these assemblies will require modifications of the existing NIST Low Background Infrared (LBIR) Facility. LANL has constructed a bolt-on addition to the LBIR facility that will allow calibration of our large aperture sources. Methodology for attaining the two blackbody sources at calibrated levels of performance equivalent to present state of the art will be explained in the following.

  9. Multipulsed dynamic moire interferometer

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID)

    1991-01-01

    An improved dynamic moire interferometer 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.

  10. Compact portable diffraction moire interferometer

    DOE Patents [OSTI]

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

    1989-01-01

    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.

  11. Compact portable diffraction moire interferometer

    DOE Patents [OSTI]

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

    1988-05-23

    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.

  12. Surface profiling interferometer

    DOE Patents [OSTI]

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

    1989-01-01

    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.

  13. Interferometer for the measurement of plasma density

    DOE Patents [OSTI]

    Jacobson, Abram R. (Los Alamos, NM)

    1980-01-01

    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.

  14. Posters Radiometric Sounding System C. D. Whiteman, G. A. Anderson...

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

    7 Posters Radiometric Sounding System C. D. Whiteman, G. A. Anderson, J. M. Alzheimer, and W. J. Shaw Pacific Northwest Laboratory Richland, Washington Introduction Vertical...

  15. Radiometrics At Reese River Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    References William R. Henkle Jr., Wayne C. Gundersen, Thomas D. Gundersen (2005) Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three...

  16. Radiometrics At Silver Peak Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    References William R. Henkle Jr., Wayne C. Gundersen, Thomas D. Gundersen (2005) Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three...

  17. Radiometrics At Salt Wells Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    Henkle, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Radiometrics At Salt Wells Area (Henkle, Et Al., 2005) Exploration Activity...

  18. Radiometrics At Fort Bliss Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    Fort Bliss Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Radiometrics At Fort Bliss Area (DOE GTP) Exploration Activity Details...

  19. CIMEL Measurements of Zenith Radiances at the ARM SGP Site

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

    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

  20. INDIA

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

    Instruments AERI Atmospheric Emitted Radiance Interferometer Measurement Type: Radiometric View Plots AOS Aerosol Observing System Measurement Type: Aerosol View Plots DL Doppler Lidar Measurement Type: Cloud Properties View Plots GNDRAD Ground Radiometers on Stand for Upwelling Radiation Measurement Type: Radiometric View Plots MET Surface Meteorological Instrumentation Measurement Type: Surface Meteorology View Plots MFRSR Multifilter Rotating Shadowband Radiometer Measurement Type:

  1. Ordinary SQUID interferometers and superfluid helium matter wave interferometers: The role of quantum fluctuations

    SciTech Connect (OSTI)

    Golovashkin, A. I.; Zherikhina, L. N. Tskhovrebov, A. M.; Izmailov, G. N.; Ozolin, V. V.

    2010-08-15

    When comparing the operation of a superfluid helium matter wave quantum interferometer (He SQUID) with that of an ordinary direct-current quantum interferometer (dc SQUID), we estimate their resolution limitation that correspond to quantum fluctuations. An alternative mode of operation of the interferometer as a unified macroquantum system is considered.

  2. ARM - Datastreams - aeri01ch1

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

    ch1 Documentation Data Quality Plots Citation DOI: 10.5439/1025138 [ 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 : AERI01CH1 Atmospheric Emitted Radiance Interferometer (AERI) 01: ch. 1 data Active Dates 1995.07.22 - 2014.03.12 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements

  3. ARM - Datastreams - aeri01ch2

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

    ch2 Documentation Data Quality Plots Citation DOI: 10.5439/1025139 [ 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 : AERI01CH2 Atmospheric Emitted Radiance Interferometer (AERI) 01: ch. 2 data Active Dates 1995.07.22 - 2014.03.12 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements

  4. ARM - Datastreams - aeri01summary

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

    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 - 2014.03.12 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only

  5. ARM - Datastreams - aerich1

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

    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 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only

  6. ARM - Datastreams - aerich2

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

    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 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only

  7. ARM - Datastreams - aeriengineer

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

    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 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI)

  8. ARM - Datastreams - aerisummary

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

    Datastreamsaerisummary Documentation Data Quality Plots Citation DOI: 10.5439/1025146 [ 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 : AERISUMMARY Atmospheric Emitted Radiance Interferometer (AERI): summary data Active Dates 1994.01.10 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements

  9. Beam shuttering interferometer and method

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Lassahn, Gordon D. (Idaho Falls, ID)

    1993-01-01

    A method and apparatus resulting in the simplification of phase shifting interferometry by eliminating the requirement to know the phase shift between interferograms or to keep the phase shift between interferograms constant. The present invention provides a simple, inexpensive means to shutter each independent beam of the interferometer in order to facilitate the data acquisition requirements for optical interferometry and phase shifting interferometry. By eliminating the requirement to know the phase shift between interferograms or to keep the phase shift constant, a simple, economical means and apparatus for performing the technique of phase shifting interferometry is provide which, by thermally expanding a fiber optical cable changes the optical path distance of one incident beam relative to another.

  10. Beam shuttering interferometer and method

    DOE Patents [OSTI]

    Deason, V.A.; Lassahn, G.D.

    1993-07-27

    A method and apparatus resulting in the simplification of phase shifting interferometry by eliminating the requirement to know the phase shift between interferograms or to keep the phase shift between interferograms constant. The present invention provides a simple, inexpensive means to shutter each independent beam of the interferometer in order to facilitate the data acquisition requirements for optical interferometry and phase shifting interferometry. By eliminating the requirement to know the phase shift between interferograms or to keep the phase shift constant, a simple, economical means and apparatus for performing the technique of phase shifting interferometry is provide which, by thermally expanding a fiber optical cable changes the optical path distance of one incident beam relative to another.

  11. X-ray shearing interferometer

    DOE Patents [OSTI]

    Koch, Jeffrey A. (Livermore, CA)

    2003-07-08

    An x-ray interferometer for analyzing high density plasmas and optically opaque materials includes a point-like x-ray source for providing a broadband x-ray source. The x-rays are directed through a target material and then are reflected by a high-quality ellipsoidally-bent imaging crystal to a diffraction grating disposed at 1.times. magnification. A spherically-bent imaging crystal is employed when the x-rays that are incident on the crystal surface are normal to that surface. The diffraction grating produces multiple beams which interfere with one another to produce an interference pattern which contains information about the target. A detector is disposed at the position of the image of the target produced by the interfering beams.

  12. Single and double superimposing interferometer systems

    DOE Patents [OSTI]

    Erskine, David J.

    2000-01-01

    Interferometers which can imprint a coherent delay on a broadband uncollimated beam are described. The delay value can be independent of incident ray angle, allowing interferometry using uncollimated beams from common extended sources such as lamps and fiber bundles, and facilitating Fourier Transform spectroscopy of wide angle sources. Pairs of such interferometers matched in delay and dispersion can measure velocity and communicate using ordinary lamps, wide diameter optical fibers and arbitrary non-imaging paths, and not requiring a laser.

  13. Achromatic self-referencing interferometer

    DOE Patents [OSTI]

    Feldman, Mark (Pleasanton, CA)

    1994-01-01

    A self-referencing Mach-Zehnder interferometer for accurately measuring laser wavefronts over a broad wavelength range (for example, 600 nm to 900 nm). The apparatus directs a reference portion of an input beam to a reference arm and a measurement portion of the input beam to a measurement arm, recombines the output beams from the reference and measurement arms, and registers the resulting interference pattern ("first" interferogram) at a first detector. Optionally, subportions of the measurement portion are diverted to second and third detectors, which respectively register intensity and interferogram signals which can be processed to reduce the first interferogram's sensitivity to input noise. The reference arm includes a spatial filter producing a high quality spherical beam from the reference portion, a tilted wedge plate compensating for off-axis aberrations in the spatial filter output, and mirror collimating the radiation transmitted through the tilted wedge plate. The apparatus includes a thermally and mechanically stable baseplate which supports all reference arm optics, or at least the spatial filter, tilted wedge plate, and the collimator. The tilted wedge plate is mounted adjustably with respect to the spatial filter and collimator, so that it can be maintained in an orientation in which it does not introduce significant wave front errors into the beam propagating through the reference arm. The apparatus is polarization insensitive and has an equal path length configuration enabling measurement of radiation from broadband as well as closely spaced laser line sources.

  14. Achromatic self-referencing interferometer

    DOE Patents [OSTI]

    Feldman, M.

    1994-04-19

    A self-referencing Mach-Zehnder interferometer is described for accurately measuring laser wavefronts over a broad wavelength range (for example, 600 nm to 900 nm). The apparatus directs a reference portion of an input beam to a reference arm and a measurement portion of the input beam to a measurement arm, recombines the output beams from the reference and measurement arms, and registers the resulting interference pattern ([open quotes]first[close quotes] interferogram) at a first detector. Optionally, subportions of the measurement portion are diverted to second and third detectors, which respectively register intensity and interferogram signals which can be processed to reduce the first interferogram's sensitivity to input noise. The reference arm includes a spatial filter producing a high quality spherical beam from the reference portion, a tilted wedge plate compensating for off-axis aberrations in the spatial filter output, and mirror collimating the radiation transmitted through the tilted wedge plate. The apparatus includes a thermally and mechanically stable baseplate which supports all reference arm optics, or at least the spatial filter, tilted wedge plate, and the collimator. The tilted wedge plate is mounted adjustably with respect to the spatial filter and collimator, so that it can be maintained in an orientation in which it does not introduce significant wave front errors into the beam propagating through the reference arm. The apparatus is polarization insensitive and has an equal path length configuration enabling measurement of radiation from broadband as well as closely spaced laser line sources. 3 figures.

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

    SciTech Connect (OSTI)

    Karabourniotis, D.; Drakakis, E.

    2010-08-09

    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.

  16. Furnace control apparatus using polarizing interferometer

    DOE Patents [OSTI]

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

    1995-01-01

    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.

  17. Process control system using polarizing interferometer

    DOE Patents [OSTI]

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

    1994-01-01

    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.

  18. Process control system using polarizing interferometer

    DOE Patents [OSTI]

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

    1994-02-15

    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.

  19. Furnace control apparatus using polarizing interferometer

    DOE Patents [OSTI]

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

    1995-03-28

    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.

  20. Sandia Research Aims to Enhance Understanding of Radiometric Instruments

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

    Aims to Enhance Understanding of Radiometric Instruments - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense

  1. Analysis of a free oscillation atom interferometer

    SciTech Connect (OSTI)

    Kafle, Rudra P.; Zozulya, Alex A.; Anderson, Dana Z.

    2011-09-15

    We analyze a Bose-Einstein condensate (BEC)-based free oscillation atom Michelson interferometer in a weakly confining harmonic magnetic trap. A BEC at the center of the trap is split into two harmonics by a laser standing wave. The harmonics move in opposite directions with equal speeds and turn back under the influence of the trapping potential at their classical turning points. The harmonics are allowed to pass through each other and a recombination pulse is applied when they overlap at the end of a cycle after they return for the second time. We derive an expression for the contrast of the interferometric fringes and obtain the fundamental limit of performance of the interferometer in the parameter space.

  2. Phase-shifting point diffraction interferometer

    DOE Patents [OSTI]

    Medecki, H.

    1998-11-10

    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.

  3. Phase-shifting point diffraction interferometer

    DOE Patents [OSTI]

    Medecki, Hector

    1998-01-01

    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.

  4. Photorefractive Interferometers for Ultrasonic Measurements on Paper

    SciTech Connect (OSTI)

    Lafond, E. F.; Brodeur, P. H.; Gerhardstein, J. P.; Habeger, C. C.; Telschow, Kenneth Louis

    2002-12-01

    Photorefractive interferometers have been employed for the detection of ultrasound in metals and composites since 1991 [14]. Instances of laser-generated ultrasound and laser-based detection in paper were reported in 1996 [5]. More recently, bismuth silicon oxide (BSO) photorefractive interferometers were adapted to detect ultrasound in paper [6]. In this article we discuss BSO and GaAs photorefractive detection of ultrasound on different paper grades and present the resulting waveforms. Compared to contact piezoelectric transducer methods, laser interferometry offers signifcant advantages. One of these is that it is a noncontact technique. This is especially important for on-line application to lightweight papers which could be marked or damaged by contact transducers. Broadband ultrasonic laser generation matched with the broadband sensitivity of laser interferometers is another beneft. This is important for obtaining narrow pulses in nondispersive time-of-fight determinations and for measuring the phase velocity of dispersive modes over a wide frequency band. Also, laser ultrasonic techniques provide a measure of bending stiffness through the analysis of low frequency A0 waves.

  5. Two-path plasmonic interferometer with integrated detector

    DOE Patents [OSTI]

    Dyer, Gregory Conrad; Shaner, Eric A.; Aizin, Gregory

    2016-03-29

    An electrically tunable terahertz two-path plasmonic interferometer with an integrated detection element can down convert a terahertz field to a rectified DC signal. The integrated detector utilizes a resonant plasmonic homodyne mixing mechanism that measures the component of the plasma waves in-phase with an excitation field that functions as the local oscillator in the mixer. The plasmonic interferometer comprises two independently tuned electrical paths. The plasmonic interferometer enables a spectrometer-on-a-chip where the tuning of electrical path length plays an analogous role to that of physical path length in macroscopic Fourier transform interferometers.

  6. Millimeter-Wavelength Forward-Model Comparisons Based on Ground-Based Radiometric Data Taken During the 1999 NSA/AO Radiometric Experiment

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

    Millimeter-Wavelength Forward-Model Comparisons Based on Ground-Based Radiometric Data Taken During the 1999 NSA/AAO Radiometric Experiment E. R. Westwater and M. A. Klein Cooperative Institute for Research in Environmental Sciences University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado P. E. Racette National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland D. Cimini University of L'Aquila

  7. Evaluating Radiometric Measurements Using a Fixed 45 Degrees Responsivity and Zenith Angle Dependent Responsivities (Poster)

    SciTech Connect (OSTI)

    Dooraghi, M.; Habte, A.; Reda, I.; Sengupta, M.; Gotseff, P.; Andreas, A.; Anderberg, M.

    2014-03-01

    This poster seeks to demonstrate the importance and application of an existing but unused approach that ultimately reduces the uncertainty of radiometric measurements. Current radiometric data is based on a single responsivity value that introduces significant uncertainty to the data, however, through using responsivity as a function of solar zenith angle, the uncertainty could be decreased by 50%.

  8. Dual-domain lateral shearing interferometer

    DOE Patents [OSTI]

    Naulleau, Patrick P.; Goldberg, Kenneth Alan

    2004-03-16

    The phase-shifting point diffraction interferometer (PS/PDI) was developed to address the problem of at-wavelength metrology of extreme ultraviolet (EUV) optical systems. Although extremely accurate, the fact that the PS/PDI is limited to use with coherent EUV sources, such as undulator radiation, is a drawback for its widespread use. An alternative to the PS/PDI, with relaxed coherence requirements, is lateral shearing interferometry (LSI). The use of a cross-grating, carrier-frequency configuration to characterize a large-field 4.times.-reduction EUV lithography optic is demonstrated. The results obtained are directly compared with PS/PDI measurements. A defocused implementation of the lateral shearing interferometer in which an image-plane filter allows both phase-shifting and Fourier wavefront recovery. The two wavefront recovery methods can be combined in a dual-domain technique providing suppression of noise added by self-interference of high-frequency components in the test-optic wavefront.

  9. Multichannel microwave interferometer for the levitated dipole experiment

    SciTech Connect (OSTI)

    Boxer, Alexander C.; Garnier, Darren T.; Mauel, Michael E.

    2009-04-15

    A four-channel microwave interferometer (center frequency: 60 GHz) has been constructed to measure plasma density profiles in the levitated dipole experiment (LDX). The LDX interferometer has a unique design owing to the unique geometry of LDX. The main design features of the interferometer are: (1) the transmitted beam traverses the plasma entirely in O-mode; (2) the interferometer is a heterodyne system employing two free-running oscillators; (3) four signals of data are received from just on transmitted beam; (4) phase shifts are detected in quadrature. Calibration tests demonstrate that the interferometer measures phase shifts with an uncertainty of approximately 5 deg. Plasma densities in LDX corresponding to phase shifts of up to 5{pi} are routinely and successfully measured.

  10. Uncertainty Estimation of Radiometric Data using a Guide to the Expression of Uncertainty in Measurement (GUM) Method

    SciTech Connect (OSTI)

    Habte, Aron

    2015-06-25

    This presentation summarizes uncertainty estimation of radiometric data using the Guide to the Expression of Uncertainty (GUM) method.

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

    DOE Patents [OSTI]

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

    2009-06-09

    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.

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

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

    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

  13. Fourier-transform and global contrast interferometer alignment methods

    DOE Patents [OSTI]

    Goldberg, Kenneth A.

    2001-01-01

    Interferometric methods are presented to facilitate alignment of image-plane components within an interferometer and for the magnified viewing of interferometer masks in situ. Fourier-transforms are performed on intensity patterns that are detected with the interferometer and are used to calculate pseudo-images of the electric field in the image plane of the test optic where the critical alignment of various components is being performed. Fine alignment is aided by the introduction and optimization of a global contrast parameter that is easily calculated from the Fourier-transform.

  14. SU-E-T-470: Beam Performance of the Radiance 330 Proton Therapy System

    SciTech Connect (OSTI)

    Nazaryan, H; Nazaryan, V; Wang, F; Flanz, J; Alexandrov, V

    2014-06-01

    Purpose: The ProTom Radiance 330 proton radiotherapy system is a fully functional, compact proton radiotherapy system that provides advanced proton delivery capabilities. It supports three-dimensional beam scanning with energy and intensity modulation. A series of measurements have been conducted to characterize the beam performance of the first installation of the system at the McLaren Proton Therapy Center in Flint, Michigan. These measurements were part of the technical commissioning of the system. Select measurements and results are presented. Methods: The Radiance 330 proton beam energy range is 70250 MeV for treatment, and up to 330 MeV for proton tomography and radiography. Its 3-D scanning capability, together with a small beam emittance and momentum spread, provides a highly efficient beam delivery. During the technical commissioning, treatment plans were created to deliver uniform maps at various energies to perform Gamma Index analysis. EBT3 Gafchromic films were irradiated using the Planned irradiation maps. Bragg Peak chamber was used to test the dynamic range during a scan in one layer for high (250 MeV) and Low (70 MeV) energies. The maximum and minimum range, range adjustment and modulation, distal dose falloff (80%20%), pencil beam spot size, spot placement accuracy were also measured. The accuracy testing included acquiring images, image registration, receiving correction vectors and applying the corrections to the robotic patient positioner. Results: Gamma Index analysis of the Treatment Planning System (TPS) data vs. Measured data showed more than 90% of points within (3%, 3mm) for the maps created by the TPS. At Isocenter Beam Size (One sigma) < 3mm at highest energy (250 MeV) in air. Beam delivery was within 0.6 mm of the intended target at the entrance and the exit of the beam, through the phantom. Conclusion: The Radiance 330 Beam Performance Measurements have confirmed that the system operates as designed with excellent clinical performance specifications. Hovakim Nazaryan, Vahagn Nazaryan and Fuhua Wang are employees of ProTom International, Inc. who contributed to the development and completed the technical commissioning of the Radiance 330 proton therapy delivery system manufactured by ProTom International.

  15. Dual-domain point diffraction interferometer

    DOE Patents [OSTI]

    Naulleau, Patrick P.; Goldberg, Kenneth Alan

    2000-01-01

    A hybrid spatial/temporal-domain point diffraction interferometer (referred to as the dual-domain PS/PDI) that is capable of suppressing the scattered-reference-light noise that hinders the conventional PS/PDI is provided. The dual-domain PS/PDI combines the separate noise-suppression capabilities of the widely-used phase-shifting and Fourier-transform fringe pattern analysis methods. The dual-domain PS/PDI relies on both a more restrictive implementation of the image plane PS/PDI mask and a new analysis method to be applied to the interferograms generated and recorded by the modified PS/PDI. The more restrictive PS/PDI mask guarantees the elimination of spatial-frequency crosstalk between the signal and the scattered-light noise arising from scattered-reference-light interfering with the test beam. The new dual-domain analysis method is then used to eliminate scattered-light noise arising from both the scattered-reference-light interfering with the test beam and the scattered-reference-light interfering with the "true" pinhole-diffracted reference light. The dual-domain analysis method has also been demonstrated to provide performance enhancement when using the non-optimized standard PS/PDI design. The dual-domain PS/PDI is essentially a three-tiered filtering system composed of lowpass spatial-filtering the test-beam electric field using the more restrictive PS/PDI mask, bandpass spatial-filtering the individual interferogram irradiance frames making up the phase-shifting series, and bandpass temporal-filtering the phase-shifting series as a whole.

  16. Radiometric characterization of a high temperature blackbody in the visible and near infrared

    SciTech Connect (OSTI)

    Taubert, R. D.; Hollandt, J.

    2013-09-11

    At the Physikalisch-Technische Bundesanstalt the radiance temperature in the range from 962 C to 3000 C is disseminated by applying a high temperature blackbody (HTBB) with a directly heated pyrolytic graphite cavity. The thermodynamic radiance temperature of the HTBB was measured in the temperature range from 1000 C to 3000 C by applying almost simultaneously absolutely calibrated silicon photodiode based filter radiometers with centre wavelengths at 476 nm, 676 nm, 800 nm, 900 nm and 1000 nm and InGaAs photodiode based filter radiometers with centre wavelengths at 1300 nm, 1550 nm and 1595 nm. The results demonstrate that, expressed in terms of irradiance, within an uncertainty of 0.1 % (k=1) in a broad wavelength range the thermodynamic radiance temperature of the HTBB is wavelength independent in the investigated temperature interval.

  17. Final Report: High Spectral Resolution Atmospheric Emitted Radiance Studies with the ARM UAV

    SciTech Connect (OSTI)

    Revercomb, Henry E.

    1999-12-31

    The active participation in the Atmospheric Radiation Measurement (ARM) Unmanned Airborne Vehicle (UAV) science team that was anticipated in the grant proposal was indefinitely delayed after the first year due to a programmatic decision to exclude the high spectral resolution observations from the existing ARM UAV program. However, this report shows that substantial progress toward the science objectives of this grant have made with the help of separate funding from NASA and other agencies. In the four year grant period (including time extensions), a new high spectral resolution instrument has been flown and has successfully demonstrated the ability to obtain measurements of the type needed in the conduct of this grant. In the near term, the third water vapor intensive observing period (WVIOP-3) in October 2000 will provide an opportunity to bring the high spectral resolution observations of upwelling radiance into the ARM program to complement the downwelling radiance observations from the existing ARM AERI instruments. We look forward to a time when the ARM-UAV program is able to extend its scope to include the capability for making these high spectral resolution measurements from a UAV platform.

  18. Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer

    SciTech Connect (OSTI)

    University of Miami; Zuo, Wangda; McNeil, Andrew; Wetter, Michael; Lee, Eleanor S.

    2013-04-30

    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.

  19. Polarizing optical interferometer having a dual use optical element

    DOE Patents [OSTI]

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

    1995-01-01

    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.

  20. Polarizing optical interferometer having a dual use optical element

    DOE Patents [OSTI]

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

    1995-04-04

    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.

  1. Multiphoton- and simultaneous conjugate Ramsey-Borde atom interferometers

    SciTech Connect (OSTI)

    Mueller, Holger; Chiow, Sheng-wey; Herrmann, Sven [Physics Department, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305 (United States); Chu, Steven [Physics Department, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305 (United States); Lawrence Berkeley National Laboratory and Department of Physics, University of California, Berkeley, 1 Cyclotron Road, Berkeley, CA 94720 (United States)

    2008-03-06

    We report on our experiment to measure h/M, the ratio of the Planck constant to the mass of Cs atoms, and thereby the fine-structure constant. The target accuracy is 1 part per billion or better. We focus on two recent milestones: (i) The first realization of atom interferometers based on light-pulse beam splitters that transfer the momentum of up to 12 photon pairs, which increases the useful signal (matter wave phase shift) by a factor of 144 compared to the beam splitters used in the best present atom interferometers. Moreover, they lead to a cancellation of important systematic effects. (ii) The first realization of a simultaneous pair of conjugate Ramsey-Borde interferometers. In these, the relative sign of the inertial term is reversed so that it can be cancelled. Simultaneous operation means that this holds for a time-dependent inertial term (vibrations) too, which promises a substantial improvement in the signal to noise ratio.

  2. Light pulse analysis with a multi-state atom interferometer

    SciTech Connect (OSTI)

    Herrera, I.; Lombardi, P.; Schfer, F.; Petrovic, J.; Cataliotti, F. S.

    2014-12-04

    We present a controllable multi-state cold-atom interferometer that is easy-to-use and fully merged on an atom chip. We demonstrate its applications as a sensor of the fields whose interactions with atoms are state-dependent.

  3. Phase estimation with nonunitary interferometers: Information as a metric

    SciTech Connect (OSTI)

    Bahder, Thomas B.

    2011-05-15

    Determining the phase in one arm of a quantum interferometer is discussed taking into account the three nonideal aspects in real experiments: nondeterministic state preparation, nonunitary state evolution due to losses during state propagation, and imperfect state detection. A general expression is written for the probability of a measurement outcome taking into account these three nonideal aspects. As an example of applying the formalism, the classical Fisher information and fidelity (Shannon mutual information between phase and measurements) are computed for few-photon Fock and N00N states input into a lossy Mach-Zehnder interferometer. These three nonideal aspects lead to qualitative differences in phase estimation, such as a decrease in fidelity and Fisher information that depends on the true value of the phase.

  4. Noise-Immune Conjugate Large-Area Atom Interferometers

    SciTech Connect (OSTI)

    Chiow Shengwey; Herrmann, Sven [Physics Department, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305 (United States); Chu, Steven; Mueller, Holger [Physics Department, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305 (United States); Department of Physics, University of California, 366 Le Conte Hall, Berkeley, California 94720-7300 (United States); Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720 (United States)

    2009-07-31

    We present a pair of simultaneous conjugate Ramsey-Borde atom interferometers using large (20(Planck constant/2pi)k)-momentum transfer beam splitters, where (Planck constant/2pi)k is the photon momentum. Simultaneous operation allows for common-mode rejection of vibrational noise. This allows us to surpass the enclosed space-time area of previous interferometers with a splitting of 20(Planck constant/2pi)k by a factor of 2500. Using a splitting of 10(Planck constant/2pi)k, we demonstrate a 3.4 ppb resolution in the measurement of the fine structure constant. Examples for applications in tests of fundamental laws of physics are given.

  5. Phase-shifting point diffraction interferometer mask designs

    DOE Patents [OSTI]

    Goldberg, Kenneth Alan (Berkeley, CA)

    2001-01-01

    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.

  6. Heterodyne interferometer with angstrom-level periodic nonlinearity

    DOE Patents [OSTI]

    Schmitz, Tony L. (Gainesville, FL); Beckwith, John F. (Indialantic, FL)

    2005-01-25

    Displacement measuring interferometer systems and methods are disclosed. One or more acousto-optic modulators for receiving a laser light beam from a laser light source can be utilized to split the laser light beam into two or more laser light beams, while spatially separating frequencies thereof. One or more reflective mechanisms can be utilized to reflect one or more of the laser light beams back to the acousto-optic modulator. Interference of two or more of the laser light beams generally at the acousto-optic modulator can provide an interfered laser light beam thereof. A detector for receiving the interfered laser light beam can be utilized to provide interferometer measurement data.

  7. Phase-shifting point diffraction interferometer grating designs

    DOE Patents [OSTI]

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

    2001-01-01

    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.

  8. ARM - Site Instruments

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

    AlaskaInstruments NSA Related Links Virtual Tour Facilities and Instruments Barrow Atqasuk Oliktok Point (AMF3) ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site NSA Fact Sheet Images Information for Guest Scientists Contacts Instruments : North Slope Alaska Active Retired Active instruments are currently deployed at fixed or mobile facilities or are available through the ARM Aerial Facility. AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots

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

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

    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

  10. Slow Light Mach-Zehnder Interferometer as Label-free Biosensor with

    Office of Scientific and Technical Information (OSTI)

    Scalable Sensitivity (Journal Article) | SciTech Connect Slow Light Mach-Zehnder Interferometer as Label-free Biosensor with Scalable Sensitivity Citation Details In-Document Search This content will become publicly available on February 5, 2017 Title: Slow Light Mach-Zehnder Interferometer as Label-free Biosensor with Scalable Sensitivity Our design, fabrication, and characterization of a label-free Mach-Zehnder interferometer (MZI) optical biosensor that incorporates a highly dispersive

  11. Impact of anomalous dispersion on the interferometer measurements of plasmas

    SciTech Connect (OSTI)

    Nilsen, J; Johnson, W R; Iglesias, C A; Scofield, J H

    2004-12-16

    For many decades optical interferometers have been used to measure the electron density of plasmas. During the last ten years X-ray lasers in the wavelength range 14 to 47 nm have enabled researchers to use interferometers to probe even higher density plasmas. The data analysis assumes that the index of refraction is due only to the free electrons, which makes the index of refraction less than one and the electron density proportional to the number of fringe shifts. Recent experiments in Al plasmas observed plasmas with an index of refraction greater than one and made us question the validity of the usual formula for calculating the index of refraction. Recent calculations showed how the anomalous dispersion from the bound electrons can dominate the index of refraction in many types of plasma and make the index greater than one or enhance the index such that one would greatly overestimate the electron density of the plasma using interferometers. In this work we calculate the index of refraction of C, Al, Ti, and Pd plasmas for photon energies from 0 to 100 eV (12.4 nm) using a new average-atom code. The results show large variations from the free electron approximation under many different plasma conditions. We validate the average-atom code against the more detailed OPAL code for carbon and aluminum plasmas. During the next decade X-ray free electron lasers and other sources will be available to probe a wider variety of plasmas at higher densities and shorter wavelengths so understanding the index of refraction in plasmas will be even more essential.

  12. Hand held phase-shifting diffraction moire interferometer

    DOE Patents [OSTI]

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

    1994-01-01

    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.

  13. On-fiber plasmonic interferometer for multi-parameter sensing

    SciTech Connect (OSTI)

    Zhang, Zhijian [Univ. of Maryland, College Park, MD (United States); Chen, Yongyao [Univ. of Maryland, College Park, MD (United States); Liu, Haijun [Univ. of Maryland, College Park, MD (United States); National Inst. of Standards and Technology, Gaithersburg, MD (United States); Bae, Hyungdae [Univ. of Maryland, College Park, MD (United States); Olson, Douglas A. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); Gupta, Ashwani K. [Univ. of Maryland, College Park, MD (United States); Yu, Miao [Univ. of Maryland, College Park, MD (United States)

    2015-01-01

    We demonstrate a novel miniature multi-parameter sensing device based on a plasmonic interferometer fabricated on a fiber facet in the optical communication wavelength range. This device enables the coupling between surface plasmon resonance and plasmonic interference in the structure, which are the two essential mechanisms for multi-parameter sensing. We experimentally show that these two mechanisms have distinctive responses to temperature and refractive index, rendering the device the capability of simultaneous temperature and refractive index measurement on an ultra-miniature form factor. A high refractive index sensitivity of 220 nm per refractive index unit (RIU) and a high temperature sensitivity of 60 pm/ C is achieved with our device.

  14. Hand held phase-shifting diffraction Moire interferometer

    DOE Patents [OSTI]

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

    1994-09-20

    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.

  15. Wollaston prism phase-stepping point diffraction interferometer and method

    DOE Patents [OSTI]

    Rushford, Michael C.

    2004-10-12

    A Wollaston prism phase-stepping point diffraction interferometer for testing a test optic. The Wollaston prism shears light into reference and signal beams, and provides phase stepping at increased accuracy by translating the Wollaston prism in a lateral direction with respect to the optical path. The reference beam produced by the Wollaston prism is directed through a pinhole of a diaphragm to produce a perfect spherical reference wave. The spherical reference wave is recombined with the signal beam to produce an interference fringe pattern of greater accuracy.

  16. Phase-shifting point diffraction interferometer phase grating designs

    DOE Patents [OSTI]

    Naulleau, Patrick (Oakland, CA)

    2001-01-01

    Diffraction phase gratings are employed in phase-shifting point diffraction interferometers to improve the interferometric fringe contrast. The diffraction phase grating diffracts a zeroth-order diffraction of light at a first power level to the test-beam window of a mask that is positioned at the image plane and a first-order diffraction at a second power to the reference-beam pinhole. The diffraction phase grating is preferably selected to yield a desired ratio of the first power level to second power level.

  17. Measurements of Martin-Puplett Interferometer Limitations using Blackbody Source

    SciTech Connect (OSTI)

    Evtushenko, Pavel E.; Klopf, John M.

    2013-06-01

    Frequency domain measurements with Martin-Puplett interferometer is one of a few techniques capable of bunch length measurements at the level of ~ 100 fs. As the bunch length becomes shorter, it is important to know and be able to measure the limitations of the instrument in terms of shortest measurable bunch length. In this paper we describe an experiment using a blackbody source with the modified Martin-Puplett interferometer that is routine- ly used for bunch length measurements at the JLab FEL, as a way to estimate the shortest, measurable bunch length. The limitation comes from high frequency cut-off of the wire-grid polarizer currently used and is estimated to be 50 fs RMS. The measurements are made with the same Golay cell detector that is used for beam measure- ments. We demonstrate that, even though the blackbody source is many orders of magnitude less bright than the coherent transition or synchrotron radiation, it can be used for the measurements and gives a very good signal to noise ratio in combination with lock-in detection. We also compare the measurements made in air and in vacuum to characterize the very strong effect of the atmospheric absorption.

  18. On-fiber plasmonic interferometer for multi-parameter sensing

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Zhijian; Chen, Yongyao; Liu, Haijun; Bae, Hyungdae; Olson, Douglas A.; Gupta, Ashwani K.; Yu, Miao

    2015-01-01

    We demonstrate a novel miniature multi-parameter sensing device based on a plasmonic interferometer fabricated on a fiber facet in the optical communication wavelength range. This device enables the coupling between surface plasmon resonance and plasmonic interference in the structure, which are the two essential mechanisms for multi-parameter sensing. We experimentally show that these two mechanisms have distinctive responses to temperature and refractive index, rendering the device the capability of simultaneous temperature and refractive index measurement on an ultra-miniature form factor. A high refractive index sensitivity of 220 nm per refractive index unit (RIU) and a high temperature sensitivity of 60morepm/ C is achieved with our device.less

  19. Statistical measures of Planck scale signal correlations in interferometers

    SciTech Connect (OSTI)

    Hogan, Craig J.; Kwon, Ohkyung

    2015-06-22

    A model-independent statistical framework is presented to interpret data from systems where the mean time derivative of positional cross correlation between world lines, a measure of spreading in a quantum geometrical wave function, is measured with a precision smaller than the Planck time. The framework provides a general way to constrain possible departures from perfect independence of classical world lines, associated with Planck scale bounds on positional information. A parametrized candidate set of possible correlation functions is shown to be consistent with the known causal structure of the classical geometry measured by an apparatus, and the holographic scaling of information suggested by gravity. Frequency-domain power spectra are derived that can be compared with interferometer data. As a result, simple projections of sensitivity for specific experimental set-ups suggests that measurements will directly yield constraints on a universal time derivative of the correlation function, and thereby confirm or rule out a class of Planck scale departures from classical geometry.

  20. High data-rate atom interferometers through high recapture efficiency

    DOE Patents [OSTI]

    Biedermann, Grant; Rakholia, Akash Vrijal; McGuinness, Hayden

    2015-01-27

    An inertial sensing system includes a magneto-optical trap (MOT) that traps atoms within a specified trapping region. The system also includes a cooling laser that cools the trapped atoms so that the atoms remain within the specified region for a specified amount of time. The system further includes a light-pulse atom interferometer (LPAI) that performs an interferometric interrogation of the atoms to determine phase changes in the atoms. The system includes a controller that controls the timing of MOT and cooling laser operations, and controls the timing of interferometric operations to substantially recapture the atoms in the specified trapping region. The system includes a processor that determines the amount inertial movement of the inertial sensing system based on the determined phase changes in the atoms. Also, a method of inertial sensing using this inertial sensing system includes recapture of atoms within the MOT following interferometric interrogation by the LPAI.

  1. Microwave and Millimeter-Wave Radiometric Studies of Temperature, Water Vapor and Clouds

    SciTech Connect (OSTI)

    Westwater, Edgeworth

    2011-05-06

    The importance of accurate measurements of column amounts of water vapor and cloud liquid has been well documented by scientists within the Atmospheric Radiation Measurement (ARM) Program. At the North Slope of Alaska (NSA), both microwave radiometers (MWR) and the MWRProfiler (MWRP), been used operationally by ARM for passive retrievals of the quantities: Precipitable Water Vapor (PWV) and Liquid Water Path (LWP). However, it has been convincingly shown that these instruments are inadequate to measure low amounts of PWV and LWP. In the case of water vapor, this is especially important during the Arctic winter, when PWV is frequently less than 2 mm. For low amounts of LWP (< 50 g/m{sup 2}), the MWR and MWRP retrievals have an accuracy that is also not acceptable. To address some of these needs, in March-April 2004, NOAA and ARM conducted the NSA Arctic Winter Radiometric Experiment - Water Vapor Intensive Operational Period at the ARM NSA/Adjacent Arctic Ocean (NSA/AAO) site. After this experiment, the radiometer group at NOAA moved to the Center for Environmental Technology (CET) of the Department of Electrical and Computer Engineering of the University of Colorado at Boulder. During this 2004 experiment, a total of 220 radiosondes were launched, and radiometric data from 22.235 to 380 GHz were obtained. Primary instruments included the ARM MWR and MWRP, a Global Positioning System (GPS), as well as the CET Ground-based Scanning Radiometer (GSR). We have analyzed data from these instruments to answer several questions of importance to ARM, including: (a) techniques for improved water vapor measurements; (b) improved calibration techniques during cloudy conditions; (c) the spectral response of radiometers to a variety of conditions: clear, liquid, ice, and mixed phase clouds; and (d) forward modeling of microwave and millimeter wave brightness temperatures from 22 to 380 GHz. Many of these results have been published in the open literature. During the third year of this contract, we participated in another ARM-sponsored experiment at the NSA during February-March 2007. This experiment is called the Radiative Heating in Underexplored Bands Campaign (RHUBC) and the GSR was operated successfully for the duration of the campaign. One of the principal goals of the experiment was to provide retrievals of water vapor during PWV amounts less than 2 mm and to compare GSR data with ARM radiometers and radiosondes. A secondary goal was to compare the radiometric response of the microwave and millimeter wavelength radiometers to water and ice clouds. In this final report, we will include the separate progress reports for each of the three years of the project and follow with a section on major accomplishments of the project.

  2. Slow Light Mach-Zehnder Interferometer as Label-free Biosensor...

    Office of Scientific and Technical Information (OSTI)

    of a label-free Mach-Zehnder interferometer (MZI) optical biosensor that incorporates a highly dispersive one-dimensional (1D) photonic crystal in one arm are presented. ...

  3. Solid optical ring interferometer for high-throughput feedback-free spectral analysis and filtering

    SciTech Connect (OSTI)

    Petrak, B.; Peiris, M.; Muller, A.

    2015-02-15

    We describe a simple and inexpensive optical ring interferometer for use in high-resolution spectral analysis and filtering. It consists of a solid cuboid, reflection-coated on two opposite sides, in which constructive interference occurs for waves in a rhombic trajectory. Due to its monolithic design, the interferometers resonance frequencies are insensitive to environmental disturbances over time. Additional advantages are its simplicity of alignment, high-throughput, and feedback-free operation. If desired, it can be stabilized with a secondary laser without disturbance of the primary signal. We illustrate the use of the interferometer for the measurement of the spectral Mollow triplet from a quantum dot and characterize its long-term stability for filtering applications.

  4. A Radiometric All-Sky Infrared Camera (RASICAM) for DES/CTIO

    SciTech Connect (OSTI)

    Lewis, Peter M.; Rogers, Howard; Schindler, Rafe H.; /SLAC

    2010-08-25

    A novel radiometric all-sky infrared camera [RASICAM] has been constructed to allow automated real-time quantitative assessment of night sky conditions for the Dark Energy Camera [DECam] located on the Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. The camera is optimized to detect the position, motion and optical depth of thin, high (8-10km) cirrus clouds and contrails by measuring their apparent temperature above the night sky background. The camera system utilizes a novel wide-field equiresolution catadioptic mirror system that provides sky coverage of 2{pi} azimuth and 14-90{sup o} from zenith. Several new technological and design innovations allow the RASICAM system to provide unprecedented cloud detection and IR-based photometricity quantification. The design of the RASICAM system is presented.

  5. Radiometric and geometric analysis of hyperspectral imagery acquired from an unmanned aerial vehicle

    SciTech Connect (OSTI)

    Hruska, Ryan; Mitchell, Jessica; Anderson, Matthew; Glenn, Nancy F.

    2012-09-17

    During the summer of 2010, an Unmanned Aerial Vehicle (UAV) hyperspectral in-flight calibration and characterization experiment of the Resonon PIKA II imaging spectrometer was conducted at the U.S. Department of Energys Idaho National Laboratory (INL) UAV Research Park. The purpose of the experiment was to validate the radiometric calibration of the spectrometer and determine the georegistration accuracy achievable from the on-board global positioning system (GPS) and inertial navigation sensors (INS) under operational conditions. In order for low-cost hyperspectral systems to compete with larger systems flown on manned aircraft, they must be able to collect data suitable for quantitative scientific analysis. The results of the in-flight calibration experiment indicate an absolute average agreement of 96.3%, 93.7% and 85.7% for calibration tarps of 56%, 24%, and 2.5% reflectivity, respectively. The achieved planimetric accuracy was 4.6 meters (based on RMSE).

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

    SciTech Connect (OSTI)

    Sorrentino, F.; Lien, Y.-H.; Rosi, G.; Tino, G. M.; Bertoldi, A.; Bodart, Q.; Cacciapuoti, L.; Angelis, M. de; Prevedelli, M.

    2012-09-10

    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.

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

    DOE Patents [OSTI]

    Brodeur, Pierre H.; Lafond, Emmanuel F.

    2000-01-01

    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.

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

    SciTech Connect (OSTI)

    Arakawa, Hiroyuki; Kawano, Yasunori; Itami, Kiyoshi

    2012-06-15

    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.

  9. Hybrid shearing and phase-shifting point diffraction interferometer

    DOE Patents [OSTI]

    Goldberg, Kenneth Alan; Naulleau, Patrick P.

    2003-06-03

    A new interferometry configuration combines the strengths of two existing interferometry methods, improving the quality and extending the dynamic range of both. On the same patterned mask, placed near the image-plane of an optical system under test, patterns for phase-shifting point diffraction interferometry and lateral shearing interferometry coexist. The former giving verifiable high accuracy for the measurement of nearly diffraction-limited optical systems. The latter enabling the measurement of optical systems with more than one wave of aberration in the system wavefront. The interferometry configuration is a hybrid shearing and point diffraction interferometer system for testing an optical element that is positioned along an optical path including: a source of electromagnetic energy in the optical path; a first beam splitter that is secured to a device that includes means for maneuvering the first beam splitter in a first position wherein the first beam splitter is in the optical path dividing light from the source into a reference beam and a test beam and in a second position wherein the first beam splitter is outside the optical path: a hybrid mask which includes a first section that defines a test window and at least one reference pinhole and a second section that defines a second beam splitter wherein the hybrid mask is secured to a device that includes means for maneuvering either the first section or the second section into the optical path positioned in an image plane that is created by the optical element, with the proviso that the first section of the hybrid mask is positioned in the optical path when first beam splitter is positioned in the optical path; and a detector positioned after the hybrid mask along the optical path.

  10. Portable Doppler interferometer system for shock diagnostics and high speed motion

    SciTech Connect (OSTI)

    Fleming, K.J.; Crump, O.B. Jr.

    1994-05-01

    VISAR (Velocity Interferometer System for Any Reflector) is a system that uses the Doppler effect and is widely used for measuring the velocity of projectiles, detonations, flying plates, shock pressures (particle velocity) and other high speed/high acceleration motion. Other methods of measurement such as accelerometers and pressure gauges have disadvantages in that they are sensitive to radiation, electromagnetic pulses, and their mass can drastically alter the velocity of the projectile. VISAR uses single frequency-single mode laser fight focused onto a target of interest. Reflected fight from the target is collected and sent through a modified, unequal leg Michelson interferometer. In the interferometer the light is split into two components which travel through the legs of the interferometer cavity and are then recombined. When the light recombines, an interference pattern is created which can range from dark (destructive interference) to bright (constructive interference). When the target moves, the reflected laser light experiences a frequency shift (increase) with respect to the frequency from the target in a static condition. Since the Doppler shifted light is split and routed through an unequal leg interferometer cavity, there is a time lag of the light containing the Doppler information at the recombination point in the interferometer. The effect of the time lag is to create a sinusoidally changing interference pattern (commonly called fringes). Since the interferometer time delay, laser wavelength, and the speed of light are known, an accurate measurement of target velocity/acceleration may be measured by analyzing both the number of tinges and the speed of tinge generation (system accuracy is 3--4%).

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

    DOE Patents [OSTI]

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

    1995-05-09

    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.

  12. Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fielding, M. D.; Chiu, J. C.; Hogan, R. J.; Feingold, G.; Eloranta, E.; O'Connor, E. J.; Cadeddu, M. P.

    2015-02-16

    Active remote sensing of marine boundary-layer clouds is challenging as drizzle drops often dominate the observed radar reflectivity. We present a new method to simultaneously retrieve cloud and drizzle vertical profiles in drizzling boundary-layer cloud using surface-based observations of radar reflectivity, lidar attenuated backscatter, and zenith radiances. Specifically, the vertical structure of droplet size and water content of both cloud and drizzle is characterised throughout the cloud. An ensemble optimal estimation approach provides full error statistics given the uncertainty in the observations. To evaluate the new method, we first perform retrievals using synthetic measurements from large-eddy simulation snapshots of cumulusmore » under stratocumulus, where cloud water path is retrieved with an error of 31 g m−2. The method also performs well in non-drizzling clouds where no assumption of the cloud profile is required. We then apply the method to observations of marine stratocumulus obtained during the Atmospheric Radiation Measurement MAGIC deployment in the northeast Pacific. Here, retrieved cloud water path agrees well with independent 3-channel microwave radiometer retrievals, with a root mean square difference of 10–20 g m−2.« less

  13. Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fielding, M. D.; Chiu, J. C.; Hogan, R. J.; Feingold, G.; Eloranta, E.; O'Connor, E. J.; Cadeddu, M. P.

    2015-07-02

    Active remote sensing of marine boundary-layer clouds is challenging as drizzle drops often dominate the observed radar reflectivity. We present a new method to simultaneously retrieve cloud and drizzle vertical profiles in drizzling boundary-layer clouds using surface-based observations of radar reflectivity, lidar attenuated backscatter, and zenith radiances under conditions when precipitation does not reach the surface. Specifically, the vertical structure of droplet size and water content of both cloud and drizzle is characterised throughout the cloud. An ensemble optimal estimation approach provides full error statistics given the uncertainty in the observations. To evaluate the new method, we first perform retrievalsmore » using synthetic measurements from large-eddy simulation snapshots of cumulus under stratocumulus, where cloud water path is retrieved with an error of 31 g m-2. The method also performs well in non-drizzling clouds where no assumption of the cloud profile is required. We then apply the method to observations of marine stratocumulus obtained during the Atmospheric Radiation Measurement MAGIC deployment in the Northeast Pacific. Here, retrieved cloud water path agrees well with independent three-channel microwave radiometer retrievals, with a root mean square difference of 10–20 g m-2.« less

  14. Radiometric and geometric analysis of hyperspectral imagery acquired from an unmanned aerial vehicle

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hruska, Ryan; Mitchell, Jessica; Anderson, Matthew; Glenn, Nancy F.

    2012-09-17

    During the summer of 2010, an Unmanned Aerial Vehicle (UAV) hyperspectral in-flight calibration and characterization experiment of the Resonon PIKA II imaging spectrometer was conducted at the U.S. Department of Energy’s Idaho National Laboratory (INL) UAV Research Park. The purpose of the experiment was to validate the radiometric calibration of the spectrometer and determine the georegistration accuracy achievable from the on-board global positioning system (GPS) and inertial navigation sensors (INS) under operational conditions. In order for low-cost hyperspectral systems to compete with larger systems flown on manned aircraft, they must be able to collect data suitable for quantitative scientific analysis.more » The results of the in-flight calibration experiment indicate an absolute average agreement of 96.3%, 93.7% and 85.7% for calibration tarps of 56%, 24%, and 2.5% reflectivity, respectively. The achieved planimetric accuracy was 4.6 meters (based on RMSE).« less

  15. Estimation of the cloud transmittance from radiometric measurements at the ground level

    SciTech Connect (OSTI)

    Costa, Dario; Mares, Oana

    2014-11-24

    The extinction of solar radiation due to the clouds is more significant than due to any other atmospheric constituent, but it is always difficult to be modeled because of the random distribution of clouds on the sky. Moreover, the transmittance of a layer of clouds is in a very complex relation with their type and depth. A method for estimating cloud transmittance was proposed in Paulescu et al. (Energ. Convers. Manage, 75 690697, 2014). The approach is based on the hypothesis that the structure of the cloud covering the sun at a time moment does not change significantly in a short time interval (several minutes). Thus, the cloud transmittance can be calculated as the estimated coefficient of a simple linear regression for the computed versus measured solar irradiance in a time interval ?t. The aim of this paper is to optimize the length of the time interval ?t. Radiometric data measured on the Solar Platform of the West University of Timisoara during 2010 at a frequency of 1/15 seconds are used in this study.

  16. Dual-axis high-data-rate atom interferometer via cold ensemble exchange

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rakholia, Akash V.; McGuinness, Hayden J.; Biedermann, Grant W.

    2014-11-24

    We demonstrate a dual-axis accelerometer and gyroscope atom interferometer, which can form the building blocks of a six-axis inertial measurement unit. By recapturing the atoms after the interferometer sequence, we maintain a large atom number at high data rates of 50 to 100 measurements per second. Two cold ensembles are formed in trap zones located a few centimeters apart and are launched toward one another. During their ballistic trajectory, they are interrogated with a stimulated Raman sequence, detected, and recaptured in the opposing trap zone. As a result, we achieve sensitivities at μg/ √Hz and μrad/s/ √Hz levels, making thismore » a compelling prospect for expanding the use of atom interferometer inertial sensors beyond benign laboratory environments.« less

  17. Dual-axis high-data-rate atom interferometer via cold ensemble exchange

    SciTech Connect (OSTI)

    Rakholia, Akash V.; McGuinness, Hayden J.; Biedermann, Grant W.

    2014-11-24

    We demonstrate a dual-axis accelerometer and gyroscope atom interferometer, which can form the building blocks of a six-axis inertial measurement unit. By recapturing the atoms after the interferometer sequence, we maintain a large atom number at high data rates of 50 to 100 measurements per second. Two cold ensembles are formed in trap zones located a few centimeters apart and are launched toward one another. During their ballistic trajectory, they are interrogated with a stimulated Raman sequence, detected, and recaptured in the opposing trap zone. As a result, we achieve sensitivities at ?g/ ?Hz and ?rad/s/ ?Hz levels, making this a compelling prospect for expanding the use of atom interferometer inertial sensors beyond benign laboratory environments.

  18. Dynamic frequency-domain interferometer for absolute distance measurements with high resolution

    SciTech Connect (OSTI)

    Weng, Jidong; Liu, Shenggang; Ma, Heli; Tao, Tianjiong; Wang, Xiang; Liu, Cangli; Tan, Hua

    2014-11-15

    A unique dynamic frequency-domain interferometer for absolute distance measurement has been developed recently. This paper presents the working principle of the new interferometric system, which uses a photonic crystal fiber to transmit the wide-spectrum light beams and a high-speed streak camera or frame camera to record the interference stripes. Preliminary measurements of harmonic vibrations of a speaker, driven by a radio, and the changes in the tip clearance of a rotating gear wheel show that this new type of interferometer has the ability to perform absolute distance measurements both with high time- and distance-resolution.

  19. Validation experiment of a numerically processed millimeter-wave interferometer in a laboratory

    SciTech Connect (OSTI)

    Kogi, Y., E-mail: kogi@fit.ac.jp; Higashi, T.; Matsukawa, S. [Department of Information Electronics, Fukuoka Institute of Technology, Fukuoka 811-0295 (Japan); Mase, A. [Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga, Fukuoka 816-0811 (Japan); Kohagura, J.; Yoshikawa, M. [Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577 (Japan); Nagayama, Y.; Kawahata, K. [National Institute for Fusion Science, Toki, Gifu 509-5202 (Japan); Kuwahara, D. [Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 (Japan)

    2014-11-15

    We propose a new interferometer system for density profile measurements. This system produces multiple measurement chords by a leaky-wave antenna driven by multiple frequency inputs. The proposed system was validated in laboratory evaluation experiments. We confirmed that the interferometer generates a clear image of a Teflon plate as well as the phase shift corresponding to the plate thickness. In another experiment, we confirmed that quasi-optical mirrors can produce multiple measurement chords; however, the finite spot size of the probe beam degrades the sharpness of the resulting image.

  20. Research Highlight

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

    atmospheric emitted radiance interferometer (AERI) during the United Arab Emirates Unified Aerosol Experiment for detectingretrieving dust aerosols. The objectives of...

  1. Radiometric measurements on the fabrication of non-destructive assay standards for WIPP-Performance Demonstration Program

    SciTech Connect (OSTI)

    Wong, A.S.; Marshall, R.S.

    1997-04-01

    The Inorganic Elemental Analysis Group of LANL has prepared several different sets of working reference materials (WRMs). These WRMs are prepared by blending quantities of nuclear materials (plutonium, americium, and enriched uranium) with diatomaceous earth. The blends are encapsulated in stainless steel cylinders. These WRMs are being measured as blind controls in neutron and gamma based non-destructive assay (NDA) instruments. Radiometric measurements on the blending homogeneity and verification on a set of sixty three plutonium based WRMs are discussed in this paper.

  2. Noise power spectral density of a fibre scattered-light interferometer with a semiconductor laser source

    SciTech Connect (OSTI)

    Alekseev, A E; Potapov, V T

    2013-10-31

    Spectral characteristics of the noise intensity fluctuations at the output of a scattered-light interferometer, caused by phase fluctuations of semiconductor laser radiation are considered. This kind of noise is one of the main factors limiting sensitivity of interferometric sensors. For the first time, to our knowledge, the expression is obtained for the average noise power spectral density at the interferometer output versus the degree of a light source coherence and length of the scattering segment. Also, the approximate expressions are considered which determine the power spectral density in the low-frequency range (up to 200 kHz) and in the limiting case of extended scattering segments. The expression obtained for the noise power spectral density agrees with experimental normalised power spectra with a high accuracy. (interferometry of radiation)

  3. Holographic Noise in Michelson Interferometers: A Direct Experimental Probe of Unification at the Planck Scale

    ScienceCinema (OSTI)

    Hogan, Craig

    2010-01-08

    Classical spacetime and quantum mass-energy form the basis of all of physics. They become inconsistent at the Planck scale, 5.4 times 10^{-44} seconds, which may signify a need for reconciliation in a unified theory. Although proposals for unified theories exist, a direct experimental probe of this scale, 16 orders of magnitude above Tevatron energy, has seemed hopelessly out of reach. However in a particular interpretation of holographic unified theories, derived from black hole evaporation physics, a world assembled out of Planck-scale waves displays effects of unification with a new kind of uncertainty in position at the Planck diffraction scale, the geometric mean of the Planck length and the apparatus size. In this case a new phenomenon may measurable, an indeterminacy of spacetime position that appears as noise in interferometers. The colloquium will discuss the theory of the effect, and our plans to build a holographic interferometer at Fermilab to measure it.

  4. Edge-channel interferometer at the graphene quantum Hall pn junction

    SciTech Connect (OSTI)

    Morikawa, Sei; Moriya, Rai; Masubuchi, Satoru Machida, Tomoki; Watanabe, Kenji; Taniguchi, Takashi

    2015-05-04

    We demonstrate a quantum Hall edge-channel interferometer in a high-quality graphene pn junction under a high magnetic field. The co-propagating p and n quantum Hall edge channels traveling along the pn interface functions as a built-in Aharonov-Bohm-type interferometer, the interferences in which are sensitive to both the external magnetic field and the carrier concentration. The trajectories of peak and dip in the observed resistance oscillation are well reproduced by our numerical calculation that assumes magnetic flux quantization in the area enclosed by the co-propagating edge channels. Coherent nature of the co-propagating edge channels is confirmed by the checkerboard-like pattern in the dc-bias and magnetic-field dependences of the resistance oscillations.

  5. A new method for determining the plasma electron density using optical frequency comb interferometer

    SciTech Connect (OSTI)

    Arakawa, Hiroyuki Tojo, Hiroshi; Sasao, Hajime; Kawano, Yasunori; Itami, Kiyoshi

    2014-04-15

    A new method of plasma electron density measurement using interferometric phases (fractional fringes) of an optical frequency comb interferometer is proposed. Using the characteristics of the optical frequency comb laser, high density measurement can be achieved without fringe counting errors. Simulations show that the short wavelength and wide wavelength range of the laser source and low noise in interferometric phases measurements are effective to reduce ambiguity of measured density.

  6. Single-shot electron bunch length measurements using a spatial electro-optical autocorrelation interferometer

    SciTech Connect (OSTI)

    Suetterlin, Daniel; Erni, Daniel; Schlott, Volker; Sigg, Hans; Jaeckel, Heinz; Murk, Axel

    2010-10-15

    A spatial, electro-optical autocorrelation (EOA) interferometer using the vertically polarized lobes of coherent transition radiation (CTR) has been developed as a single-shot electron bunch length monitor at an optical beam port downstream the 100 MeV preinjector LINAC of the Swiss Light Source. This EOA monitor combines the advantages of step-scan interferometers (high temporal resolution) [D. Mihalcea et al., Phys. Rev. ST Accel. Beams 9, 082801 (2006) and T. Takahashi and K. Takami, Infrared Phys. Technol. 51, 363 (2008)] and terahertz-gating technologies [U. Schmidhammer et al., Appl. Phys. B: Lasers Opt. 94, 95 (2009) and B. Steffen et al., Phys. Rev. ST Accel. Beams 12, 032802 (2009)] (fast response), providing the possibility to tune the accelerator with an online bunch length diagnostics. While a proof of principle of the spatial interferometer was achieved by step-scan measurements with far-infrared detectors, the single-shot capability of the monitor has been demonstrated by electro-optical correlation of the spatial CTR interference pattern with fairly long (500 ps) neodymium-doped yttrium aluminum garnet (Nd:YAG) laser pulses in a ZnTe crystal. In single-shot operation, variations of the bunch length between 1.5 and 4 ps due to different phase settings of the LINAC bunching cavities have been measured with subpicosecond time resolution.

  7. Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems

    DOE Patents [OSTI]

    Marshall, Kenneth L. (Rochester, NY)

    2009-02-17

    Liquid crystal point diffraction interferometer (LCPDI) systems that can provide real-time, phase-shifting interferograms that are useful in the characterization of static optical properties (wavefront aberrations, lensing, or wedge) in optical elements or dynamic, time-resolved events (temperature fluctuations and gradients, motion) in physical systems use improved LCPDI cells that employ a "structured" substrate or substrates in which the structural features are produced by thin film deposition or photo resist processing to provide a diffractive element that is an integral part of the cell substrate(s). The LC material used in the device may be doped with a "contrast-compensated" mixture of positive and negative dichroic dyes.

  8. Null test fourier domain alignment technique for phase-shifting point diffraction interferometer

    DOE Patents [OSTI]

    Naulleau, Patrick; Goldberg, Kenneth Alan

    2000-01-01

    Alignment technique for calibrating a phase-shifting point diffraction interferometer involves three independent steps where the first two steps independently align the image points and pinholes in rotation and separation to a fixed reference coordinate system, e.g, CCD. Once the two sub-elements have been properly aligned to the reference in two parameters (separation and orientation), the third step is to align the two sub-element coordinate systems to each other in the two remaining parameters (x,y) using standard methods of locating the pinholes relative to some easy to find reference point.

  9. Optical layout and mechanical structure of polarimeter-interferometer system for Experimental Advanced Superconducting Tokamak

    SciTech Connect (OSTI)

    Zou, Z. Y.; Liu, H. Q. Jie, Y. X.; Wang, Z. X.; Shen, J. S.; An, Z. H.; Yang, Y.; Zeng, L.; Wei, X. C.; Li, G. S.; Zhu, X.; Ding, W. X.; Brower, D. L.; Lan, T.

    2014-11-15

    A Far-InfaRed (FIR) three-wave POlarimeter-INTerferometer (POINT) system for measurement current density profile and electron density profile is under development for the EAST tokamak. The FIR beams are transmitted from the laser room to the optical tower adjacent to EAST via ?20 m overmoded dielectric waveguide and then divided into 5 horizontal chords. The optical arrangement was designed using ZEMAX, which provides information on the beam spot size and energy distribution throughout the optical system. ZEMAX calculations used to optimize the optical layout design are combined with the mechanical design from CATIA, providing a 3D visualization of the entire POINT system.

  10. Design and construction of a Fourier transform soft x-ray interferometer

    SciTech Connect (OSTI)

    Spring, John A.

    2000-05-10

    Helium, with its two electrons and one nucleus, is a three-body system. One of the models for investigating correlated electron motion in this system is autoionization, produced via double excitation of the electrons. Predictions about the autoionization spectrum of helium have differed from each other and from preliminary experimental data. However, previous experiments have not been able to distinguish among the theoretical predictions because their energy resolution is not high enough to resolve the narrow linewidths of quasi-forbidden peaks and the resonances that appear in the highest excited states. Consequently, a team of researchers at Lawrence Berkeley National Laboratory have embarked on a project for building a high-resolution Fourier-Transform Soft X-ray (or VUV) interferometer (FTSX) to provide definitive data to answer remaining questions about the autoionization spectrum of helium. The design and construction of this interferometer is described in detail below, including the use of a flexure stage to provide the large path length difference necessary for high resolution measurements, the manufacture of x-ray beamsplitters, a description of the software, and the solution to the problems of stick-slip, vibration, and alignment. Current progress of its development is also described, as well as future goals.

  11. A Method to Estimate Uncertainty in Radiometric Measurement Using the Guide to the Expression of Uncertainty in Measurement (GUM) Method; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Habte, A.; Sengupta, M.; Reda, I.

    2015-03-01

    Radiometric data with known and traceable uncertainty is essential for climate change studies to better understand cloud radiation interactions and the earth radiation budget. Further, adopting a known and traceable method of estimating uncertainty with respect to SI ensures that the uncertainty quoted for radiometric measurements can be compared based on documented methods of derivation.Therefore, statements about the overall measurement uncertainty can only be made on an individual basis, taking all relevant factors into account. This poster provides guidelines and recommended procedures for estimating the uncertainty in calibrations and measurements from radiometers. The approach follows the Guide to the Expression of Uncertainty in Measurement (GUM). derivation.Therefore, statements about the overall measurement uncertainty can only be made on an individual basis, taking all relevant factors into account. This poster provides guidelines and recommended procedures for estimating the uncertainty in calibrations and measurements from radiometers. The approach follows the Guide to the Expression of Uncertainty in Measurement (GUM).

  12. Non-invasive hyperthermia apparatus including coaxial applicator having a non-invasive radiometric receiving antenna incorporated therein and method of use thereof

    DOE Patents [OSTI]

    Ross, M.P.

    1996-08-27

    A coaxial hyperthermia applicator is disclosed for applying non-invasively electromagnetic energy to a body against which it is placed. The coaxial applicator antenna has formed integrally within it a non-invasive radiometric antenna for receiving thermoelectromagnetic emissions. The coaxial-configured applicator produces a bell-shaped radiation pattern symmetric about the axis of symmetry of the coaxial applicator. Integrating the radiometric antenna within the coaxial applicator produces a single device that performs dual functions. The first function is to transmit non-invasively energy for heating a subcutaneous tumor. The second function is to receive non-invasively thermal electromagnetic radiation from the tumor by which temperature is sensed and fed back to control the output of the coaxial applicator. 11 figs.

  13. Non-invasive hyperthermia apparatus including coaxial applicator having a non-invasive radiometric receiving antenna incorporated therein and method of use thereof

    DOE Patents [OSTI]

    Ross, Michael P. (Albquuerque, NM)

    1996-01-01

    A coaxial hyperthermia applicator for applying non-invasively electromagnetic energy to a body against which it is placed. The coaxial applicator antenna has formed integrally within it a non-invasive radiometric antenna for receiving thermoelectromagnetic emissions. The coaxial-configured applicator produces a bell-shaped radiation pattern symmetric about the axis of symmetry of the coaxial applicator. Integrating the radiometric antenna within the coaxial applicator produces a single device that performs dual functions. The first function is to transmit non-invasively energy for heating a subcutaneous tumor. The second function is to receive non-invasively thermal electromagnetic radiation from the tumor by which temperature is sensed and fed back to control the output of the coaxial applicator.

  14. High temperature millimeter wave radiometric and interferometric measurements of slag-refractory interaction for application to coal gasifiers

    SciTech Connect (OSTI)

    McCloy, John S.; Crum, Jarrod V.; Sundaram, S. K.; Slaugh, Ryan W.; Woskov, Paul P.

    2011-09-17

    Millimeter wave (MMW) radiometry can be used for simultaneous measurement of emissivity and temperature of materials under extreme environments (high temperature, pressure, and corrosive environments) such as in slagging coal gasifiers, where sensors have been identified as a key enabling technology need for process optimization. We present a state-of-the-art dual-channel MMW heterodyne radiometer with active interferometric capability that allows simultaneous radiometric measurements of sample temperature, emissivity, and flow dynamics to over 1873 K. Interferometric capability is supplied via a probe signal originating from the 137 GHz radiometer local oscillator (LO). The interferometric 'video' channels allow measurement of additional parameters simultaneously, such as volume expansion, thickness change, and slag viscosity along with temperature or emissivity. This capability has been used to demonstrate measurement of temperature and simulated coal slag infiltration into a chromia refractory brick sample as well as slag flow down a vertically placed refractory brick. Observed phenomena include slag melting and slumping, slag reboil and foam with oxygen evolution, and eventual failure of the alumina crucible through corrosion by the molten slag. These results show the promise of the MMW system for extracting quantitative and qualitative process parameters from operating slagging coal gasifiers, providing valuable information for process efficiency, control, and increased productivity.

  15. Flexture plate motion-transfer mechanism, beam-splitter assembly, and interferometer incorporating the same

    DOE Patents [OSTI]

    Carangelo, Robert M. (Glastonbury, CT); Dettori, Mark D. (Farmington, CT); Grigely, Lawrence J. (South Windsor, CT); Murray, Terence C. (Winchester, MA); Solomon, Peter R. (West Hartford, CT); Van Dine, C. Peter (Bolton, CT); Wright, David D. (Vershire, VT)

    1996-01-01

    A multiplicity of one-piece flexure plates are assembled in pairs to provide a support system on which a retroreflector may be mounted for reciprocal motion. Combined with balance bodies, the flexure plates provide a support system having portions that are dynamically and statically balanced with one another, irrespective of orientation, so as to thereby immunize the unit against extraneous forces. The motion transfer assembly is especially adapted for use to support a moving retroreflector in a two-arm interferometer that may further include a beamsplitter assembly constructed from a one-piece, integrally formed body, the body having convergent, optically flat planar surfaces of specular reflectance, and means for adjustably mounting a beamsplitter therein. The spectrometer is of modular construction, and employs an integrated clocking sub-assembly as well as a light-weight voice-coil motor.

  16. Phase-shifting point diffraction interferometer focus-aid enhanced mask

    DOE Patents [OSTI]

    Naulleau, Patrick (5239 Miles Ave., Apt. A, Oakland, CA 94618)

    2000-01-01

    A phase-shifting point diffraction interferometer system (PS/PDI) employing a PS/PDI mask that includes a PDI focus aid is provided. The PDI focus aid mask includes a large or secondary reference pinhole that is slightly displaced from the true or primary reference pinhole. The secondary pinhole provides a larger capture tolerance for interferometrically performing fine focus. With the focus-aid enhanced mask, conventional methods such as the knife-edge test can be used to perform an initial (or rough) focus and the secondary (large) pinhole is used to perform interferometric fine focus. Once the system is well focused, high accuracy interferometry can be performed using the primary (small) pinhole.

  17. Slow light Mach-Zehnder interferometer as label-free biosensor with scalable sensitivity

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Qin, Kun; Hu, Shuren; Retterer, Scott T.; Kravchenko, Ivan I.; Weiss, Sharon M.

    2016-02-05

    Our design, fabrication, and characterization of a label-free Mach–Zehnder interferometer (MZI) optical biosensor that incorporates a highly dispersive one-dimensional (1D) photonic crystal in one arm are presented. The sensitivity of this slow light MZI-based sensor scales with the length of the slow light photonic crystal region. The numerically simulated sensitivity of a MZI sensor with a 16 μm long slow light region is 115,000 rad/RIU-cm, which is sevenfold higher than traditional MZI biosensors with millimeter-length sensing regions. Moreover, the experimental bulk refractive index detection sensitivity of 84,000 rad/RIU-cm is realized and nucleic acid detection is also demonstrated.

  18. Flexture plate motion-transfer mechanism, beam-splitter assembly, and interferometer incorporating the same

    DOE Patents [OSTI]

    Carangelo, R.M.; Dettori, M.D.; Grigely, L.J.; Murray, T.C.; Solomon, P.R.; Dine, C.P. Van; Wright, D.D.

    1996-01-23

    A multiplicity of one-piece flexure plates are assembled in pairs to provide a support system on which a retroreflector may be mounted for reciprocal motion. Combined with balance bodies, the flexure plates provide a support system having portions that are dynamically and statically balanced with one another, irrespective of orientation, so as to thereby immunize the unit against extraneous forces. The motion transfer assembly is especially adapted for use to support a moving retroreflector in a two-arm interferometer that may further include a beamsplitter assembly constructed from a one-piece, integrally formed body, the body having convergent, optically flat planar surfaces of specular reflectance, and means for adjustably mounting a beamsplitter therein. The spectrometer is of modular construction, and employs an integrated clocking sub-assembly as well as a light-weight voice-coil motor. 15 figs.

  19. Faraday-effect polarimeter-interferometer system for current density measurement on EAST

    SciTech Connect (OSTI)

    Liu, H. Q.; Jie, Y. X. Zou, Z. Y.; Li, W. M.; Wang, Z. X.; Qian, J. P.; Yang, Y.; Zeng, L.; Wei, X. C.; Hu, L. Q.; Wan, B. N.; Ding, W. X.; Brower, D. L.; Lan, T.; Li, G. S.

    2014-11-15

    A multichannel far-infrared laser-based POlarimeter-INTerferometer (POINT) system utilizing the three-wave technique is under development for current density and electron density profile measurements in the EAST tokamak. Novel molybdenum retro-reflectors are mounted in the inside wall for the double-pass optical arrangement. A Digital Phase Detector with 250 kHz bandwidth, which will provide real-time Faraday rotation angle and density phase shift output, have been developed for use on the POINT system. Initial calibration indicates the electron line-integrated density resolution is less than 5 10{sup 16} m{sup ?2} (?2), and the Faraday rotation angle rms phase noise is <0.1.

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

    SciTech Connect (OSTI)

    Wu Zhifang; Liu Yange; Wang Zhi; Han Tingting; Li Shuo; Jiang Meng; Ping Shum, Perry

    2012-10-01

    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.

  1. High energy x-ray phase contrast CT using glancing-angle grating interferometers

    SciTech Connect (OSTI)

    Sarapata, A.; Stayman, J. W.; Siewerdsen, J. H.; Finkenthal, M.; Stutman, D.; Pfeiffer, F.

    2014-02-15

    Purpose: The authors present initial progress toward a clinically compatible x-ray phase contrast CT system, using glancing-angle x-ray grating interferometry to provide high contrast soft tissue images at estimated by computer simulation dose levels comparable to conventional absorption based CT. Methods: DPC-CT scans of a joint phantom and of soft tissues were performed in order to answer several important questions from a clinical setup point of view. A comparison between high and low fringe visibility systems is presented. The standard phase stepping method was compared with sliding window interlaced scanning. Using estimated dose values obtained with a Monte-Carlo code the authors studied the dependence of the phase image contrast on exposure time and dose. Results: Using a glancing angle interferometer at high x-ray energy (∼45 keV mean value) in combination with a conventional x-ray tube the authors achieved fringe visibility values of nearly 50%, never reported before. High fringe visibility is shown to be an indispensable parameter for a potential clinical scanner. Sliding window interlaced scanning proved to have higher SNRs and CNRs in a region of interest and to also be a crucial part of a low dose CT system. DPC-CT images of a soft tissue phantom at exposures in the range typical for absorption based CT of musculoskeletal extremities were obtained. Assuming a human knee as the CT target, good soft tissue phase contrast could be obtained at an estimated absorbed dose level around 8 mGy, similar to conventional CT. Conclusions: DPC-CT with glancing-angle interferometers provides improved soft tissue contrast over absorption CT even at clinically compatible dose levels (estimated by a Monte-Carlo computer simulation). Further steps in image processing, data reconstruction, and spectral matching could make the technique fully clinically compatible. Nevertheless, due to its increased scan time and complexity the technique should be thought of not as replacing, but as complimentary to conventional CT, to be used in specific applications.

  2. Understanding the dramatic role of anomalous dispersion on the measurement of electron densities in plasmas using interferometers

    SciTech Connect (OSTI)

    Nilsen, J; Johnson, W R; Iglesias, C A; Scofield, J H

    2005-07-20

    For decades the electron density of plasmas has been measured using optical interferometers. With the availability of good X-ray laser sources in the last decade interferometers have been extended into the wavelength range 14-47 nm, which has enabled researchers to probe even higher density plasmas. The data analysis assumes the index of refraction is due only to the free electrons, which makes the index less than one. Recent interferometer experiments in Al plasmas observed plasmas with index of refraction greater than one at 14 nm and brought into question the validity of the usual formula for calculating the index. In this paper we show how the anomalous dispersion from bound electrons can dominate the free electron contribution to the index of refraction in many plasmas and make the index greater than one or enhance the contribution to the index such that one would greatly overestimate the density of the plasma using interferometers. Using a new average-atom code we calculate the index of refraction in many plasmas at different temperatures for photon energies from 0 to 100 eV and compare against calculations done with OPAL. We also present examples of other plasmas that may have index of refraction greater than one at X-ray laser energies. During the next decade X-ray free electron lasers and other X-ray sources will be available to probe a wider variety of plasmas at higher densities and shorter wavelengths so understanding the index of refraction in plasmas will be even more essential.

  3. PLANETARY TRANSITS WITH THE ATACAMA LARGE MILLIMETER/SUBMILLIMETER ARRAY RADIO INTERFEROMETER

    SciTech Connect (OSTI)

    Selhorst, C. L.; Barbosa, C. L.; Vlio, Adriana

    2013-11-10

    Planetary transits are commonly observed at visible wavelengths. Here we investigate the shape of a planetary transit observed at radio wavelengths. Solar maps at 17 GHz are used as a proxy for the stellar eclipse by several sizes of planets from super-Earths to hot Jupiters. The relative depth at mid-transit is the same as observed at visible wavelengths, but the limb brightening of the stellar disk at 17 GHz is clearly seen in the shape of the transit light curve. Moreover, when the planet occults an active region the depth of the transit decreases even further, depending on the brightness of the active region relative to the surrounding disk. For intense active region, with 50 times the brightness temperature of the surrounding disk, the decrease can supercede the unperturbed transit depth depending on the size of the eclipsing planet. For a super-Earth (R{sub p} = 0.02 R{sub s} ) crossing, the decrease in intensity is 0.04%, increasing to 0.86% in the case when a strong active region is present. On the other hand, for a hot Jupiter with R{sub p} = 0.17R{sub s} , the unperturbed transit depth is 3% increasing to 4.7% when covering this strong active region. This kind of behavior can be verified with observation of planetary transits with the Atacama Large Millimeter/submillimeter Array radio interferometer.

  4. Velocity Interferometer blanking due to preheating in a double pulse planar experiment

    SciTech Connect (OSTI)

    Laffite, S.; Combis, P.; Clerouin, J.; Recoules, V.; Rousseaux, C.; Videau, L.; Baton, S. D.; Koenig, M.

    2014-08-15

    Optical diagnostics, such as VISAR (Velocity Interferometer System for Any Reflector) or SOP (Streaked Optical Pyrometry), have become essential in shock timing experiments. Their high precision allows for accurate measurements of shock velocities, chronometry, and brightness temperature. However, in some instances, these measurements can be compromised. In planar shock coalescence experiments recently performed at the LULI facility [Baton et al., Phys. Rev. Lett. 108, 195002 (2012)], VISAR signal loss was observed. In these experiments, a strong shock launched by a high-intensity spike catches up with a previously shock launched by an earlier, low-intensity beam. The disappearance of the VISAR signal is attributed to a preheating of the coronal plasma by x-rays generated by the high intensity spike. The signal does not disappear if the high-intensity spike starts after VISAR probe beam begins to reflect off of the first shock. The VISAR diagnostic, modeled using an assessment of the optical index in quartz, compares favorably to experimental results. This provides evidence that x-ray preheating can cause blanking of the VISAR signal in quartz.

  5. AERI - What, Where, How, and Future Plans

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

    AERI - What, Where, How, and Future Plans Demirgian, Jack Argonne National Laboratory Category: Instruments The atmospheric emitted radiance interferometer (AERI) measures the...

  6. ARM - Blog Article

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

    facility is the centerpiece of the team's involvement within PECAN and will carry a Doppler wind lidar, atmospheric emitted radiance interferometer, and microwave radiometer....

  7. X:\\ARM_19~1\\4264.FRT

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

    entraining parcel model SGP Southern Great Plains SIROS solar and infrared observing system SNR signal-to-noise ratio SORTI Solar Radiance Transmission Interferometer SPECTRE...

  8. ARM Climate Research Facility

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

    ... 1 2.3 Atmospherically Emitted Radiance Interferometer Noise Filter (AERINF) ... 2 2.4 AERI Profiles of Water Vapor and...

  9. ARM Climate Research Facility

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

    ... 1 2.2 Atmospherically Emitted Radiance Interferometer Noise Filter (AERINF) ... 2 2.3 AERI Profiles of Water Vapor and...

  10. ACARS Aerodynamic (Research Incorporated) Communication and Recording...

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

    Research, Inc. AERI Atmospheric Emitted Radiance Interferometer AFOSR Air Force Office of Scientific Research AGARD Advisory Group for Aerospace Research and Development...

  11. ARM - Measurement - Longwave narrowband radiance

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

    Thermometer - Airborne MAS : NASA MODIS Airborne Simulator NOAA-P3 : NOAA P-3 Aircraft UAV-PROTEUS : UAV Proteus Value-Added Products LBTM-MINNIS : Minnis Cloud Products Using...

  12. Application of asymptotic expansions for maximum likelihood estimators errors to gravitational waves from binary mergers: The single interferometer case

    SciTech Connect (OSTI)

    Zanolin, M.; Vitale, S.; Makris, N.

    2010-06-15

    In this paper we apply to gravitational waves (GW) from the inspiral phase of binary systems a recently derived frequentist methodology to calculate analytically the error for a maximum likelihood estimate of physical parameters. We use expansions of the covariance and the bias of a maximum likelihood estimate in terms of inverse powers of the signal-to-noise ration (SNR)s where the square root of the first order in the covariance expansion is the Cramer Rao lower bound (CRLB). We evaluate the expansions, for the first time, for GW signals in noises of GW interferometers. The examples are limited to a single, optimally oriented, interferometer. We also compare the error estimates using the first two orders of the expansions with existing numerical Monte Carlo simulations. The first two orders of the covariance allow us to get error predictions closer to what is observed in numerical simulations than the CRLB. The methodology also predicts a necessary SNR to approximate the error with the CRLB and provides new insight on the relationship between waveform properties, SNR, dimension of the parameter space and estimation errors. For example the timing match filtering can achieve the CRLB only if the SNR is larger than the Kurtosis of the gravitational wave spectrum and the necessary SNR is much larger if other physical parameters are also unknown.

  13. Rapid and noncontact photoacoustic tomography imaging system using an interferometer with high-speed phase modulation technique

    SciTech Connect (OSTI)

    Liu, Jun; Tang, Zhilie; Wu, Yongbo; Wang, Yi

    2015-04-15

    We designed, fabricated, and tested a rapid and noncontact photoacoustic tomography (PAT) imaging system using a low-coherence interferometer with high-speed phase modulation technique. Such a rapid and noncontact probing system can greatly decrease the time of imaging. The proposed PAT imaging system is experimentally verified by capturing images of a simulated tissue sample and the blood vessels within the ear flap of a mouse (pinna) in vivo. The axial and lateral resolutions of the system are evaluated at 45 and ∼15 μm, respectively. The imaging depth of the system is 1 mm in a special phantom. Our results show that the proposed system opens a promising way to realize noncontact, real-time PAT.

  14. Measurement of Electron Density near Plasma Grid of Large-scaled Negative Ion Source by Means of Millimeter-Wave Interferometer

    SciTech Connect (OSTI)

    Nagaoka, K.; Tokuzawa, T.; Tsumori, K.; Nakano, H.; Ito, Y.; Osakabe, M.; Ikeda, K.; Kisaki, M.; Shibuya, M.; Sato, M.; Komada, S.; Kondo, T.; Hayashi, H.; Asano, E.; Takeiri, Y.; Kaneko, O.

    2011-09-26

    A millimeter-wave interferometer with the frequency of 39 GHz ({lambda} 7.7 mm) was newly installed to a large-scaled negative ion source. The measurable line-integrated electron density (n{sub e}l) is from 2x10{sup 16} to 7x10{sup 18} m{sup -2}, where n{sub e} and l represent an electron density and the plasma length along the millimeter-wave path, respectively. Our interest in this study is behavior of negative ions and reduction of electron density in the beam extraction region near the plasma grid. The first results show the possibility of the electron density measurement by the millimeter-wave interferometer in this region. The line-averaged electron density increases proportional to the arc power under the condition without cesium seeding. The significant decrease of the electron density and significant increase of the negative ion density were observed just after the cesium seeding. The electron density measured with the interferometer agrees well with that observed with a Langmuir probe. The very high negative ion ratio of n{sub H-}/(n{sub e}+n{sub H-}) = 0.85 was achieved within 400 min. after the cesium seeding.

  15. High Spectral Resolution Infrared and Raman Lidar Observations for the ARM Program: Clear and Cloudy Sky Applications

    SciTech Connect (OSTI)

    Henry Revercomb, David Tobin, Robert Knuteson, Lori Borg, Leslie Moy

    2009-06-17

    This grant began with the development of the Atmospheric Emitted Radiance Interferometer (AERI) for ARM. The AERI has provided highly accurate and reliable observations of downwelling spectral radiance (Knuteson et al. 2004a, 2004b) for application to radiative transfer, remote sensing of boundary layer temperature and water vapor, and cloud characterization. One of the major contributions of the ARM program has been its success in improving radiation calculation capabilities for models and remote sensing that evolved from the multi-year, clear-sky spectral radiance comparisons between AERI radiances and line-by-line calculations (Turner et al. 2004). This effort also spurred us to play a central role in improving the accuracy of water vapor measurements, again helping ARM lead the way in the community (Turner et al. 2003a, Revercomb et al. 2003). In order to add high-altitude downlooking AERI-like observations over the ARM sites, we began the development of an airborne AERI instrument that has become known as the Scanning High-resolution Interferometer Sounder (Scanning-HIS). This instrument has become an integral part of the ARM Unmanned Aerospace Vehicle (ARM-UAV) program. It provides both a cross-track mapping view of the earth and an uplooking view from the 12-15 km altitude of the Scaled Composites Proteus aircraft when flown over the ARM sites for IOPs. It has successfully participated in the first two legs of the grand tour of the ARM sites (SGP and NSA), resulting in a very good comparison with AIRS observations in 2002 and in an especially interesting data set from the arctic during the Mixed-Phase Cloud Experiment (M-PACE) in 2004. More specifically, our major achievements for ARM include 1. Development of the Atmospheric Emitted Radiance Interferometer (AERI) to function like a satellite on the ground for ARM, providing a steady stream of accurately calibrated spectral radiances for Science Team clear sky and cloud applications (Knuteson et al. 2004a), 2. Detailed radiometric calibration and characterization of AERI radiances, with uncertainty estimates established from complete error analyses and proven by inter-comparison tests (Knuteson et al. 2004b), 3. AERI data quality assessment and maintenance over the extended time frames needed to support ARM (Dedecker et al., 2005) 4. Key role in the radiative transfer model improvements from the AERI/LBLRTM QME (Turner et al. 2004) and AERI-ER especially from the SHEBA experiment (Tobin et al. 1999), 5. Contributed scientific and programmatic leadership leading to significant water vapor accuracy improvements and uncertainty assessments for the low to mid troposphere (Turner et al. 2003a, Revercomb et al. 2003), 6. Leadership of the ARM assessment of the accuracy of water vapor observations from radiosondes, Raman Lidar and in situ aircraft observations in the upper troposphere and lower stratosphere (Tobin et al. 2002, Ferrare et al. 2004), 7. New techniques for characterizing clouds from AERI (DeSlover et al. 1999, Turner 2003b, Turner et al. 2003b), 8. Initial design and development of the Scanning-HIS aircraft instrument and application to ARM UAV Program missions (Revercomb et al. 2005), and 9. Coordinated efforts leading to the use of ARM observations as a key validation tool for the high resolution Atmospheric IR Sounder on the NASA Aqua platform (Tobin et al. 2005a) 10. Performed ARM site and global clear sky radiative closure studies that shows closure of top-of-atmosphere flux at the level of ~1 W/m2 (Moy et al 2008 and Section 3 of this appendix) 11. Performed studies to characterize SGP site cirrus cloud property retrievals and assess impacts on computed fluxes and heating rate profiles (Borg et al. 2008 and Section 2 of this appendix).

  16. Zenith Radiance Retrieval of Cloud Properties

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

    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

  17. Remotely Controlled, Continuous Observations of Infrared Radiance...

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

    narrow-band filters, and uses off-axis paraboloids to focus the radiation on the 1-mm dimension HgCdTe-cooled detector. The CSIROARM Mark I detector was cooled by a liquid...

  18. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    1999-01-01

    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.

  19. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    1997-01-01

    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.

  20. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, D.J.

    1997-06-24

    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.

  1. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-06-08

    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.

  2. A low-noise transimpedance amplifier for the detection of Violin-Mode resonances in advanced Laser Interferometer Gravitational wave Observatory suspensions

    SciTech Connect (OSTI)

    Lockerbie, N. A.; Tokmakov, K. V.

    2014-11-15

    This paper describes the design and performance of an extremely low-noise differential transimpedance amplifier, which takes its two inputs from separate photodiodes. The amplifier was planned to serve as the front-end electronics for a highly sensitive shadow-displacement sensing system, aimed at detecting very low-level Violin-Mode (VM) oscillations in 0.4 mm diameter by 600 mm long fused-silica suspension fibres. Four such highly tensioned fibres support the 40 kg test-masses/mirrors of the Advanced Laser Interferometer Gravitational wave Observatory interferometers. This novel design of amplifier incorporates features which prevent noise-gain peaking arising from large area photodiode (and cable) capacitances, and which also usefully separate the DC and AC photocurrents coming from the photodiodes. In consequence, the differential amplifier was able to generate straightforwardly two DC outputs, one per photodiode, as well as a single high-gain output for monitoring the VM oscillationsthis output being derived from the difference of the photodiodes two, naturally anti-phase, AC photocurrents. Following a displacement calibration, the amplifier's final VM signal output was found to have an AC displacement responsivity at 500 Hz of (9.43 1.20) MV(rms) m{sup ?1}(rms), and, therefore, a shot-noise limited sensitivity to such AC shadow- (i.e., fibre-) displacements of (69 13) picometres/?Hz at this frequency, over a measuring span of 0.1 mm.

  3. A real-time laser feedback control method for the three-wave laser source used in the polarimeter-interferometer diagnostic on Joint-TEXT tokamak

    SciTech Connect (OSTI)

    Xiong, C. Y.; Chen, J. Li, Q.; Liu, Y.; Gao, L.

    2014-12-15

    A three-wave laser polarimeter-interferometer, equipped with three independent far-infrared laser sources, has been developed on Joint-TEXT (J-TEXT) tokamak. The diagnostic system is capable of high-resolution temporal and phase measurement of the Faraday angle and line-integrated density. However, for long-term operation (>10 min), the free-running lasers can lead to large drifts of the intermediate frequencies (∼100–∼500 kHz/10 min) and decay of laser power (∼10%–∼20%/10 min), which act to degrade diagnostic performance. In addition, these effects lead to increased maintenance cost and limit measurement applicability to long pulse/steady state experiments. To solve this problem, a real-time feedback control method of the laser source is proposed. By accurately controlling the length of each laser cavity, both the intermediate frequencies and laser power can be simultaneously controlled: the intermediate frequencies are controlled according to the pre-set values, while the laser powers are maintained at an optimal level. Based on this approach, a real-time feedback control system has been developed and applied on J-TEXT polarimeter-interferometer. Long-term (theoretically no time limit) feedback of intermediate frequencies (maximum change less than ±12 kHz) and laser powers (maximum relative power change less than ±7%) has been successfully achieved.

  4. Design of a fully-fiber multi-chord interferometer and a new phase-shift demodulation method for field-reversed configuration

    SciTech Connect (OSTI)

    Fang, Dongfan Sun, Qizhi; Zhao, Xiaoming; Jia, Yuesong

    2014-05-15

    A 633 nm laser interferometer has been designed based on a novel concept, which, without the acousto-optic modulator or the demodulator circuit, adopts the fibers to connect all elements except photodetectors and oscilloscope in this system to make it more compact, portable, and efficient. The noteworthy feature is to mathematically compare the two divided interference signals, which have the same phase-shift caused by the electron density but possess the different initial phase and low angular frequencies. It is possible to read the plasma density directly on the oscilloscope by our original mathematic demodulation method without a camera. Based on the Abel inversion algorithm, the radial electron density profiles versus time can be obtained by using the multi-chord system. The designed measurable phase shift ranges from 0 to 2π rad corresponding to the maximum line integral of electron density less than 3.5 × 10{sup 17} cm{sup −2}, and the phase accuracy is about 0.017 rad corresponding to the line integral of electron density accuracy of 1 × 10{sup 15} cm{sup −2}. After the construction of eight-chord interferometer, it will provide the detailed time resolved information of the spatial distribution of the electron density in the field-reversed configuration (FRC) plasma target produced by the “Yingguang-1” programmed-discharge device, which is being constructed in the Key Laboratory of Pulsed Power, China Academy of Engineering Physics.

  5. Moir deflectometry using the Talbot-Lau interferometer as refraction diagnostic for High Energy Density plasmas at energies below 10 keV

    SciTech Connect (OSTI)

    Valdivia, M. P.; Stutman, D.; Finkenthal, M.

    2014-07-15

    The highly localized density gradients expected in High Energy Density (HED) plasma experiments can be characterized by x-ray phase-contrast imaging in addition to conventional attenuation radiography. Moir deflectometry using the Talbot-Lau grating interferometer setup is an attractive HED diagnostic due to its high sensitivity to refraction induced phase shifts. We report on the adaptation of such a system for operation in the sub-10 keV range by using a combination of free standing and ultrathin Talbot gratings. This new x-ray energy explored matches well the current x-ray backlighters used for HED experiments, while also enhancing phase effects at lower electron densities. We studied the performance of the high magnification, low energy Talbot-Lau interferometer, for single image phase retrieval using Moir fringe deflectometry. Our laboratory and simulation studies indicate that such a device is able to retrieve object electron densities from phase shift measurements. Using laboratory x-ray sources from 7 to 15 ?m size we obtained accurate simultaneous measurements of refraction and attenuation for both sharp and mild electron density gradients.

  6. ARM - Campaign Instrument - aeri-uwisc

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

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Atmospheric Emitted Radiance Interferometer - University of Wisconsin...

  7. ARM - Campaign Instrument - aeri

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

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Atmospheric Emitted Radiance Interferometer (AERI) Instrument Categories...

  8. Operation Greenhouse. Scientific Director's report of atomic weapon tests at Eniwetok, 1951. Annex 8. 2B. Interferometer gauge pressure-time measurements

    SciTech Connect (OSTI)

    Kirk, J.E.; Seacord, D.F.; Newman, R.W.

    1985-04-01

    This project was charged with the responsibility of conducting tests on static aircraft panels mounted on the ground at various ranges from the blast. Pressure-versus-time data were obtained using interferometer gauges. The gauge proved to be reliable and easy to operate. Its high-frequency response enabled it to record data to the pressure rise at the front of the blast wave which had not been noted previously. These results show, from measurements taken by pressure instruments mounted flush with the ground, that the rise times at the front of the blast waves were on gamma-radiation intensity by the smple expedient of stacking a few layers of lead breic around the gauge mounts.

  9. 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 "œno-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 (OSTI)

    Knyazikhin, Y

    2012-09-10

    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.

  10. Category:Radiometrics | Open Energy Information

    Open Energy Info (EERE)

    Feedback Contact needs updating Image needs updating Reference needed Missing content Broken link Other Additional Comments Cancel Submit Categories: Geothermal Passive Sensors...

  11. Mercury Geochemical, Groundwater Geochemical, And Radiometric...

    Open Energy Info (EERE)

    at right angles to known and suspected faults. Scintillometer readings (gamma radiation - total counts second) were also recorded at each soil sample station. At the...

  12. ARM - Facility News Article

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

    July 31, 2008 [Facility News] Southern Great Plains Gets an "Assist" for Instrument Intercomparison Bookmark and Share In July, the SGP site hosted an instrument intercomparison between the AERI and the new ASSIST instrument, shown above. One instrument scientists use to obtain measurements important for climate studies is an atmospherically emitted radiance interferometer, or AERI. This sophisticated instrument measures the absolute infrared spectral radiance of the sky directly above

  13. ARM - Publications: Science Team Meeting Documents

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

    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

  14. ARM - Publications: Science Team Meeting Documents

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

    Long Term AERI Data Summaries or Spectral Radiance Data for Testing Climate Models Tobin, D., Revercomb, H., Knuteson, R.O., Best, F., Dedecker, R., Howell, H.B., Garcia, R., and Feltz, W., University of Wisconsin-Madison Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Atmospheric Emitted Radiance Interferometer (AERI) data collection has been on-going at the SGP, NSA, and TWP ARM sites for a number of years now. This poster presents long term trends and distributions of

  15. ARM - Publications: Science Team Meeting Documents

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

    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

  16. Posters Residual Analysis of Surface Spectral Radiances Between...

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

    D. Brown Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts N. E. Miller, J. C. Liljegren and T. R. Shippert Pacific Northwest Laboratory Richland, Washington...

  17. Radiance: Science and Stagecraft Come Together via Alan Alda...

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

    ... They work on various kinds of writing skills in presenting their work to the public and ... Addthis Related Articles Celebrating Women's History Month: Marie Curie Chemical Theorist ...

  18. MAGIC Cloud Properties from Zenith Radiance Data Final Campaign Summary

    SciTech Connect (OSTI)

    Chiu, J. -Y.C.; Gregory, L.; Wagener, R.

    2016-01-01

    Cloud droplet size and optical depth are the most fundamental properties for understanding cloud formation, dissipation and interactions with aerosol and drizzle. They are also a crucial determinant of Earth’s radiative and water-energy balances. However, these properties are poorly predicted in climate models. As a result, the response of clouds to climate change is one of the major sources of uncertainty in climate prediction.

  19. ARM - Instrument Datastreams

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

    DatastreamsRadiometric

  20. ARM - Instruments

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

    govInstrumentsRadiometric

  1. ARM - Measurements

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

    govMeasurementsRadiometric

  2. ARM - Instrument - asti

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

    govInstrumentsasti Documentation ASTI : Handbook 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 : Absolute Solar Transmittance Interferometer (ASTI) Instrument Categories Radiometric General Overview The absolute solar transmittance interferometer (ASTI) provides calibrated spectra of the solar irradiance at the surface of the earth over a wavelength region from 1 to 5 microns at a resolution of 2

  3. The 2004 North Slope of Alaska Arctic Winter Radiometric Experiment

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

    CETEMPS Universita' dell'Aquila L'Aquila, Italy V. Mattioli Dipartimento di Ingegneria Elettronica e dell'Informazione Perugia, Italy B. L. Weber and S. Dowlatshahi Science ...

  4. Radiometrics At Lightning Dock Geothermal Area (Deal, Et Al....

    Open Energy Info (EERE)

    G., Elston, W.E., Erb, E. E., Peterson, S. L., & Reiter, D. E. (1978) Cenozoic volcanic geology of the Basin and Range province in Hidalgo County, southwestern New Mexico...

  5. Radiometrics At Chena Geothermal Area (Kolker, 2008) | Open Energy...

    Open Energy Info (EERE)

    Phase I) Notes Fugro, Inc. performed an airborne geophysical survey using the DIGHEM (Digital Helicopter ElectroMagnetics) aircraft over a 937 km2 survey grid. Airborne gamma...

  6. Radiometrics At Salt Wells Area (Coolbaugh, Et Al., 2006) | Open...

    Open Energy Info (EERE)

    precipitation and the susceptibility of NaCl to remobilization in meteoric water at low temperature. Remote sensing methods for identifying regional-scale zoning of these...

  7. Calibration and Measurement Uncertainty Estimation of Radiometric Data: Preprint

    SciTech Connect (OSTI)

    Habte, A.; Sengupta, M.; Reda, I.; Andreas, A.; Konings, J.

    2014-11-01

    Evaluating the performance of photovoltaic cells, modules, and arrays that form large solar deployments relies on accurate measurements of the available solar resource. Therefore, determining the accuracy of these solar radiation measurements provides a better understanding of investment risks. This paper provides guidelines and recommended procedures for estimating the uncertainty in calibrations and measurements by radiometers using methods that follow the International Bureau of Weights and Measures Guide to the Expression of Uncertainty (GUM). Standardized analysis based on these procedures ensures that the uncertainty quoted is well documented.

  8. ARM - Field Campaign - Millimeter-wave Radiometric Arctic Winter...

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

    Westwater Scanning-O2 Radiometer Order Data Racette Millimeter-wave Imaging Radiometer (MIR) Order Data Han Corrected ARM MWR data Order Data Michalsky Rotating Shadowband...

  9. Procedure for Generating Data Quality Reports for SIRS Radiometric...

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

    electrical problem of January 30 persisted to February 1, raising the global horizontal signal above empirical limits for much of the day: DQR Guide cases 1-8 (see Table 2.). The...

  10. Radiometric Ages- Compilation 'B', U.S. Geological Survey | Open...

    Open Energy Info (EERE)

    Abstract Abstract unavailable Authors R.F. Marvin and S.W. Dobson Published New Mexico Bureau of Mines and Mineral Resources, 1979 Report Number IsochronWest no. 26 DOI Not...

  11. ARM - Datastreams - mfrirt25m

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

    Datastreamsmfrirt25m Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : MFRIRT25M Infrared Thermometer (MFRIRT): upwelling radiance, instantaneous 20-sec at 25-meter height Active Dates 2001.04.01 - 2001.09.26 Measurement Categories Radiometric, Surface Properties Originating Instrument Multifilter Radiometer and Infrared Thermometer (MFRIRT) Measurements The measurements

  12. ARM - Instrument - csphot

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

    govInstrumentscsphot Documentation CSPHOT : Handbook 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 : Cimel Sunphotometer (CSPHOT) Instrument Categories Aerosols, Radiometric Picture of the Cimel Sunphotometer (CSPHOT) General Overview The Cimel sunphotometer (CSPHOT) is a multi-channel, automatic sun-and-sky scanning radiometer that measures the direct solar irradiance and sky radiance at the Earth's

  13. ARM - Instrument - mfrirt

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

    govInstrumentsmfrirt Documentation 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 : Multifilter Radiometer and Infrared Thermometer (MFRIRT) Instrument Categories Aerosols, Radiometric Output Datastreams mfrirt25m : Infrared Thermometer (MFRIRT): upwelling radiance, instantaneous 20-sec at 25-meter height Primary Measurements The following measurements are those considered scientifically relevant.

  14. ARM - Instrument - sasze

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

    govInstrumentssasze Documentation 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 : Shortwave Array Spectroradiometer-Zenith (SASZE) Instrument Categories Radiometric General Overview The Shortwave Array Spectroradiometer - Zenith (SASZE) measures the zenith sky shortwave radiance over the spectral range from the near infrared to the ultraviolet. The SASZE incorporates two Avantes fiber-coupled

  15. ARM - Instrument - sws

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

    govInstrumentssws Documentation SWS : Handbook 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 : Shortwave Spectroradiometer (SWS) Instrument Categories Radiometric General Overview The Shortwave Spectroradiometer (SWS), measures the absolute visible and near infrared spectral radiance (units of watts per meter square per nanometer per steradian) of the zenith directly above the instrument. The SWS is a

  16. ARM - Datastreams - avhrr10rad

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

    0rad 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 : AVHRR10RAD AVHRR: radiance, 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.

  17. ARM - Datastreams - avhrr11rad

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

    1rad 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 : AVHRR11RAD AVHRR: radiance, NOAA-11 Satellite Active Dates 1994.07.21 - 1998.10.13 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant.

  18. ARM - Datastreams - avhrr12rad

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

    2rad 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 : AVHRR12RAD AVHRR: radiance, 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.

  19. ARM - Datastreams - avhrr14rad

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

    4rad 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 : AVHRR14RAD AVHRR: radiance, NOAA-14 Satellite Active Dates 1995.01.18 - 2007.03.12 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant.

  20. ARM - Datastreams - avhrr15rad

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

    5rad 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 : AVHRR15RAD AVHRR: radiance, NOAA-15 Satellite Active Dates 1998.11.10 - 2007.10.07 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant.

  1. ARM - Datastreams - avhrr16rad

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

    6rad 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 : AVHRR16RAD AVHRR (NOAA 16) radiance data Active Dates 2000.12.09 - 2007.04.01 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant.

  2. ARM - Datastreams - avhrr17rad

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

    rad 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 : AVHRR17RAD AVHRR (NOAA 17) radiance data Active Dates 2002.06.27 - 2007.10.07 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

  3. ARM - Datastreams - avhrr18rad

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

    rad 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 : AVHRR18RAD AVHRR (NOAA 18) radiance data Active Dates 2005.09.25 - 2007.04.01 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

  4. ARM - Datastreams - avhrr9rad

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

    rad 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 : AVHRR9RAD AVHRR: radiance, NOAA-9 Satellite Active Dates 1994.09.15 - 1995.08.02 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically relevant.

  5. ARM - Datastreams - csphotalm

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

    Datastreamscsphotalm Documentation Data Quality Plots Citation DOI: 10.5439/1025172 [ 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 : CSPHOTALM Cimel Sunphotometer (CSPHOT): almucantars sky radiance data Active Dates 1994.04.06 - 2016.02.29 Measurement Categories Radiometric Originating Instrument Cimel Sunphotometer (CSPHOT) Measurements Only measurements considered

  6. Microsoft Word - turner-dd2.doc

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

    Microphysical Properties Retrieved from Rapid-Sample AERI Data D.D. Turner Pacific Northwest National Laboratory Richland, Washington R.O. Knuteson, H.E. Revercomb, W.F. Felt, and R.G. Dedecker University of Wisconsin Madison, Wisconsin Introduction The Atmospheric Emitted Radiance Interferometer (AERI) measures downwelling infrared radiance from 550-3000 cm -1 (18.2 - 3.3 µm) at high-spectral-resolution (~ 1 cm -1 ) (Knuteson et al. 2004). The original temporal sampling strategy (a 3-min

  7. Section 111

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

    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

  8. ARM SGP and BN AERI Instrument Diagnostic Comparison and Preliminary Assessment

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

    ARM SGP and BN AERI Instrument Diagnostic Comparison and Preliminary Assessment D. Yuan, C. Golanics, M. Howard, and G. Williams Bechtel Nevada Remote Sensing Laboratory Las Vegas, Nevada Abstract A continuous collection for diagnostic instrumental comparison was conducted at the Southern Great Plains (SGP) Lamont site from June 11 to the 13, 2003 using the Atmospheric Emitted Radiance Interferometer (AERI) at the site and the AERI owned by the U.S. Department of Energy (DOE), National Nuclear

  9. Quadrennial Technology Review Acronyms

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

    71 Acronyms $/km dollars per kilometer $/kWh dollars per kilowatt-hour $/MJ dollars per megajoule $/MMBtu dollars per million British thermal units 3D 3-dimensional AC alternating current ACCEL Accelerating Competitiveness through Computational Excellence Program ACTT Advanced Computing Tech Team AM additive manufacturing AEO Annual Energy Outlook (of the EIA) AEP annual energy production AER all-electric range AERI atmospheric emitted radiance interferometers AHT absorption heat transformer Al

  10. ARM - Instrument Location Table

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

    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 ENA NSA SGP AMF C1 C1 EF BF CF EF IF Aerosol Chemical Speciation Monitor ACSM Atmospheric Emitted Radiance Interferometer AERI Aethalometer AETH Ameriflux Measurement Component AMC Aerosol Observing System AOS Meteorological Measurements

  11. Time series analysis of AERI radiances for GCM testing and improvement

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

    and improvement Dykema, John Harvard University Leroy, Stephen Harvard University Anderson, James Harvard University Tobin, David University of Wisconsin-Madison Knuteson,...

  12. ARM - Datastreams - saszefilterbands

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

    ( wavelength ) Shortwave spectral radiance Zenith radiance at 340 nm W(m2 um sr) zenithradiance340nm ( time ) Shortwave spectral radiance Zenith radiance at 355 nm W...

  13. Microsoft Word - AMF2 Instruments for BAECC.docx

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

    AMF2 I nstruments f or B AECC Instrument Mentor Instrument Name Manufacturer Measurement ASSISTII ( like an A eri) Connor F lynn ASSISTII LR---Tech, Inc. Temperature a nd w ater v apor p rofiles CSPHOT Laurie G regory Cimel Sunphotometer CIMEL Electronique Solar i rradiance and sky radiance IRT Vic M orris Infrared Thermometer Heimann Equivalent b lack b ody b rightness t emps MWR---2C Maria C adeddu Microwave Radiometer Radiometrics Column H 20 v apor a nd l iquid MWR---3C Maria C adeddu

  14. Inelastic transport through Aharonov-Bohm interferometer in Kondo regime

    SciTech Connect (OSTI)

    Yoshii, Ryosuke; Eto, Mikio; Sakano, Rui; Affleck, Ian

    2013-12-04

    We formulate elastic and inelastic parts of linear conductance through an Aharonov-Bohm (AB) ring with an embedded quantum dot in the Kondo regime. The inelastic part G{sub inel} is proportional to T{sup 2} when the temperature T is much smaller than the Kondo temperature T{sub K}, whereas it is negligibly small compared with elastic part G{sub el} when T ? T{sub K}. G{sub inel} weakly depends on the magnetic flux penetrating the AB ring, which disturbs the precise detection of G{sub el}/(G{sub el}+G{sub inel}) by the visibility of AB oscillation.

  15. Source localization of brain activity using helium-free interferometer

    SciTech Connect (OSTI)

    Dammers, Jürgen Chocholacs, Harald; Eich, Eberhard; Boers, Frank; Faley, Michael; Dunin-Borkowski, Rafal E.; Jon Shah, N.

    2014-05-26

    To detect extremely small magnetic fields generated by the human brain, currently all commercial magnetoencephalography (MEG) systems are equipped with low-temperature (low-T{sub c}) superconducting quantum interference device (SQUID) sensors that use liquid helium for cooling. The limited and increasingly expensive supply of helium, which has seen dramatic price increases recently, has become a real problem for such systems and the situation shows no signs of abating. MEG research in the long run is now endangered. In this study, we report a MEG source localization utilizing a single, highly sensitive SQUID cooled with liquid nitrogen only. Our findings confirm that localization of neuromagnetic activity is indeed possible using high-T{sub c} SQUIDs. We believe that our findings secure the future of this exquisitely sensitive technique and have major implications for brain research and the developments of cost-effective multi-channel, high-T{sub c} SQUID-based MEG systems.

  16. Solar Radiometric Data Quality Assessment of SIRS, SKYRAD and GNDRAD Measurements (Poster)

    SciTech Connect (OSTI)

    Habte, A.; Stoffel, T.; Reda, I.; Wilcox, S.; Kutchenreiter, M.; Gotseff, P.; Anderberg, M.

    2014-03-01

    Solar radiation is the driving force for the earth's weather and climate. Understanding the elements of this dynamic energy balance requires accurate measurements of broadband solar irradiance. Since the mid-1990's the ARM Program has deployed pyrheliometers and pyranometers for the measurement of direct normal irradiance (DNI), global horizontal irradiance (GHI), diffuse horizontal irradiance (DHI), and upwelling shortwave (US) radiation at permanent and mobile field research sites. This poster summarizes the basis for assessing the broadband solar radiation data available from the SIRS, SKYRAD, and GNDRAD measurement systems and provides examples of data inspections.

  17. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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), and Smith, W.L.(d), Univeristy of Wisconsin - Madison (a), Pacific Northwest National Laboratory (b), NASA Goddard Space Flight Center (c), NASA Langley Research Center (d) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Ground-based Atmospheric Emitted Radiance Interferometer (AERI) and Raman lidar

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

    SciTech Connect (OSTI)

    Richard A. Ferrare; David D. Turner

    2011-09-01

    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.

  19. Theory, electro-optical design, testing, and calibration of a prototype atmospheric supersaturation, humidity, and temperature sensor. Final report Mar 81-Jul 82

    SciTech Connect (OSTI)

    Nelson, L.D.

    1982-07-15

    A new infrared differential absorption - passive thermal emission based instrument designed to make accurate in-cloud measurements of absolute humidity, air temperature, relative humidity, and ice and water supersaturations has been developed. Absolute humidity is measured by the differential infrared absorption of a broad-band light beam between 2.45 microns wavelength and the strongly absorbing water vapor band at 2.67 microns. Air temperature is sensed by a passive radiometric measurement of the Planck's law radiance emitted by carbon dioxide molecules in their very intense emission band at 4.25 microns. Significant operational advantages over previous 14-16 micron band radiometers are achieved. These non-contact optical measurements of absolute humidity and true air temperature can then be combined to yield relative humidity values with respect to both water and ice which remain valid in condensing supersaturated conditions and in spite of hydrometeors in the sample volume.

  20. Thermal gradient-induced forces on geodesic reference masses for LISA

    SciTech Connect (OSTI)

    Carbone, L.; Ciani, G.; Dolesi, R.; Hueller, M.; Tombolato, D.; Vitale, S.; Weber, W. J.; Cavalleri, A.

    2007-11-15

    The low frequency sensitivity of space-borne gravitational wave observatories will depend critically on the geodesic purity of the trajectories of orbiting test masses. Fluctuations in the temperature difference across the enclosure surrounding the free-falling test mass can produce noisy forces through several processes, including the radiometric effect, radiation pressure, and outgassing. We present here a detailed experimental investigation of thermal gradient-induced forces for the Laser Interferometer Space Antenna (LISA) gravitational wave mission and the LISA Pathfinder, employing high resolution torsion pendulum measurements of the torque on a LISA-like test mass suspended inside a prototype of the LISA gravitational reference sensor that will surround the test mass in orbit. The measurement campaign, accompanied by numerical simulations of the radiometric and radiation pressure effects, allows a more accurate and representative characterization of thermal-gradient forces in the specific geometry and environment relevant to LISA free-fall. The pressure dependence of the measured torques allows clear identification of the radiometric effect, in quantitative agreement with the model developed. In the limit of zero gas pressure, the measurements are most likely dominated by outgassing, but at a low level that does not threaten the current LISA noise estimate, which assumes a maximum net force per degree of temperature difference of 100(pN/K) for the overall thermal gradient-induced effects.

  1. Application of non-radiometric methods to the determination of plutonium. Literature review conducted for the Buried Waste Integrated Program

    SciTech Connect (OSTI)

    Edelson, M.C.

    1992-03-05

    This literature review was motivated by discussions that took place during a review of contamination control technologies proposed for INEL (buried waste). It should be a useful tool in identifying non-radiation measurement techniques for Pu and Am such as ICP-MS, which should fulfill the following criteria: apparatus must be field deployable; up to 100 samples per day; and lower levels of detection and required time must be listed. The sensitivity of ICP and RIMS is compared against that needed for contamination monitoring at INEL. Only Pu-241, with a required detection limit of 400 ppt, would challenge the sensitivity of ICP-MS; Pu-238 would be easily determined. The need to determine Pu-238 and Am-241 in the presence of U-238 and Pu-241 seems to preclude the possibility of using laser ablation ICP-MS for Pu monitoring. ICP-AES and -LEAFS methods may not have enough sensitivity to determine Pu-238 at 2 ppb level with confidence, but RIMS (resonance ionization mass spectroscopy) should be adequate. 47 refs, figs.

  2. A cloud detection algorithm using the downwelling infrared radiance measured by an infrared pyrometer of the ground-based microwave radiometer

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ahn, M. H.; Han, D.; Won, H. Y.; Morris, Victor R.

    2015-02-03

    For better utilization of the ground-based microwave radiometer, it is important to detect the cloud presence in the measured data. Here, we introduce a simple and fast cloud detection algorithm by using the optical characteristics of the clouds in the infrared atmospheric window region. The new algorithm utilizes the brightness temperature (Tb) measured by an infrared radiometer installed on top of a microwave radiometer. The two-step algorithm consists of a spectral test followed by a temporal test. The measured Tb is first compared with a predicted clear-sky Tb obtained by an empirical formula as a function of surface air temperaturemore » and water vapor pressure. For the temporal test, the temporal variability of the measured Tb during one minute compares with a dynamic threshold value, representing the variability of clear-sky conditions. It is designated as cloud-free data only when both the spectral and temporal tests confirm cloud-free data. Overall, most of the thick and uniform clouds are successfully detected by the spectral test, while the broken and fast-varying clouds are detected by the temporal test. The algorithm is validated by comparison with the collocated ceilometer data for six months, from January to June 2013. The overall proportion of correctness is about 88.3% and the probability of detection is 90.8%, which are comparable with or better than those of previous similar approaches. Two thirds of discrepancies occur when the new algorithm detects clouds while the ceilometer does not, resulting in different values of the probability of detection with different cloud-base altitude, 93.8, 90.3, and 82.8% for low, mid, and high clouds, respectively. Finally, due to the characteristics of the spectral range, the new algorithm is found to be insensitive to the presence of inversion layers.« less

  3. A cloud detection algorithm using the downwelling infrared radiance measured by an infrared pyrometer of the ground-based microwave radiometer

    SciTech Connect (OSTI)

    Ahn, M. H.; Han, D.; Won, H. Y.; Morris, Victor R.

    2015-02-03

    For better utilization of the ground-based microwave radiometer, it is important to detect the cloud presence in the measured data. Here, we introduce a simple and fast cloud detection algorithm by using the optical characteristics of the clouds in the infrared atmospheric window region. The new algorithm utilizes the brightness temperature (Tb) measured by an infrared radiometer installed on top of a microwave radiometer. The two-step algorithm consists of a spectral test followed by a temporal test. The measured Tb is first compared with a predicted clear-sky Tb obtained by an empirical formula as a function of surface air temperature and water vapor pressure. For the temporal test, the temporal variability of the measured Tb during one minute compares with a dynamic threshold value, representing the variability of clear-sky conditions. It is designated as cloud-free data only when both the spectral and temporal tests confirm cloud-free data. Overall, most of the thick and uniform clouds are successfully detected by the spectral test, while the broken and fast-varying clouds are detected by the temporal test. The algorithm is validated by comparison with the collocated ceilometer data for six months, from January to June 2013. The overall proportion of correctness is about 88.3% and the probability of detection is 90.8%, which are comparable with or better than those of previous similar approaches. Two thirds of discrepancies occur when the new algorithm detects clouds while the ceilometer does not, resulting in different values of the probability of detection with different cloud-base altitude, 93.8, 90.3, and 82.8% for low, mid, and high clouds, respectively. Finally, due to the characteristics of the spectral range, the new algorithm is found to be insensitive to the presence of inversion layers.

  4. Use of the ARM Measurements of Spectral Zenith Radiance for Better Understanding of 3D Cloud-Radiation Processes & Aerosol-Cloud Interaction

    SciTech Connect (OSTI)

    Chiu, Jui-Yuan Christine

    2014-04-10

    This project focuses on cloud-radiation processes in a general three-dimensional cloud situation, with particular emphasis on cloud optical depth and effective particle size. The proposal has two main parts. Part one exploits the large number of new wavelengths offered by the Atmospheric Radiation Measurement (ARM) zenith-pointing ShortWave Spectrometer (SWS), to develop better retrievals not only of cloud optical depth but also of cloud particle size. We also take advantage of the SWS’ high sampling resolution to study the “twilight zone” around clouds where strong aerosol-cloud interactions are taking place. Part two involves continuing our cloud optical depth and cloud fraction retrieval research with ARM’s 2-channel narrow vield-of-view radiometer and sunphotometer instrument by, first, analyzing its data from the ARM Mobile Facility deployments, and second, making our algorithms part of ARM’s operational data processing.

  5. Tunable Pseudogap Kondo Effect and Quantum Phase Transitions in Aharonov-Bohm Interferometers

    SciTech Connect (OSTI)

    Dias Da Silva, Luis G; Sandler, Nancy; Simon, Pascal; Ingersent, Kevin; Ulloa, Sergio E

    2009-01-01

    We study two quantum dots embedded in the arms of an Aharonov-Bohm ring threaded by a magnetic flux. This system can be described by an effective one-impurity Anderson model with an energy- and flux- dependent density of states. For specific values of the flux, this density of states vanishes at the Fermi energy, yielding a controlled realization of the pseudogap Kondo effect. The conductance and trans- mission phase shifts reflect a nontrivial interplay between wave interference and interactions, providing clear signatures of quantum phase transitions between Kondo and non-Kondo ground states.

  6. Sensitivity enhancement of grating interferometer based two-dimensional sensor arrays using two-wavelength readout

    SciTech Connect (OSTI)

    Ferhanoglu, Onur; Urey, Hakan

    2011-07-01

    Diffraction gratings integrated with microelectromechanical systems (MEMS) sensors offer displacement measurements with subnanometer sensitivity. However, the sensitivity of the interferometric readout may drop significantly based on the gap between the grating and the reference surface. A two-wavelength (2-{lambda}) readout method was previously tested using a single MEMS sensor for illustrating increased displacement measurement capability. This work demonstrates sensitivity enhancement on a sensor array with large scale parallelization ({approx}20,000 sensors). The statistical representation, which is developed to model sensitivity enhancement within a grating based sensor array, is supported by experimental results using a thermal sensor array. In the experiments, two lasers at different wavelengths (633 and 650 nm) illuminate the thermal sensor array from the backside, time-sequentially. The diffracted first order light from the array is imaged onto a single CCD camera. The target scene is reconstructed by observing the change in the first diffracted order diffraction intensity for both wavelengths. Merging of the data from two measurements with two lasers was performed by taking the larger of the two CCD measurements with respect to the reference image for each sensor. {approx}30% increase in the average sensitivity was demonstrated for a 160x120 pixel IR sensor array. Proposed architecture is also applicable to a variety of sensing applications, such as parallel biosensing and atomic force microscopy, for improved displacement measurements and enhanced sensitivity.

  7. Application Of The Phase Shifting Diffraction Interferometer For Measuring Convex Mirrors And Negative Lenses

    DOE Patents [OSTI]

    Sommargren, Gary E. (Santa Cruz, CA); Campbell, Eugene W. (Livermore, CA)

    2005-06-21

    To measure a convex mirror, a reference beam and a measurement beam are both provided through a single optical fiber. A positive auxiliary lens is placed in the system to give a converging wavefront onto the convex mirror under test. A measurement is taken that includes the aberrations of the convex mirror as well as the errors due to two transmissions through the positive auxiliary lens. A second measurement provides the information to eliminate this error. A negative lens can also be measured in a similar way. Again, there are two measurement set-ups. A reference beam is provided from a first optical fiber and a measurement beam is provided from a second optical fiber. A positive auxiliary lens is placed in the system to provide a converging wavefront from the reference beam onto the negative lens under test. The measurement beam is combined with the reference wavefront and is analyzed by standard methods. This measurement includes the aberrations of the negative lens, as well as the errors due to a single transmission through the positive auxiliary lens. A second measurement provides the information to eliminate this error.

  8. Application of the phase shifting diffraction interferometer for measuring convex mirrors and negative lenses

    DOE Patents [OSTI]

    Sommargren, Gary E.; Campbell, Eugene W.

    2004-03-09

    To measure a convex mirror, a reference beam and a measurement beam are both provided through a single optical fiber. A positive auxiliary lens is placed in the system to give a converging wavefront onto the convex mirror under test. A measurement is taken that includes the aberrations of the convex mirror as well as the errors due to two transmissions through the positive auxiliary lens. A second, measurement provides the information to eliminate this error. A negative lens can also be measured in a similar way. Again, there are two measurement set-ups. A reference beam is provided from a first optical fiber and a measurement beam is provided from a second optical fiber. A positive auxiliary lens is placed in the system to provide a converging wavefront from the reference beam onto the negative lens under test. The measurement beam is combined with the reference wavefront and is analyzed by standard methods. This measurement includes the aberrations of the negative lens, as well as the errors due to a single transmission through the positive auxiliary lens. A second measurement provides the information to eliminate this error.

  9. Phase-sensitive two-dimensional neutron shearing interferometer and Hartmann sensor

    DOE Patents [OSTI]

    Baker, Kevin L.

    2015-12-08

    A neutron imaging system detects both the phase shift and absorption of neutrons passing through an object. The neutron imaging system is based on either of two different neutron wavefront sensor techniques: 2-D shearing interferometry and Hartmann wavefront sensing. Both approaches measure an entire two-dimensional neutron complex field, including its amplitude and phase. Each measures the full-field, two-dimensional phase gradients and, concomitantly, the two-dimensional amplitude mapping, requiring only a single measurement.

  10. Chromatic-aberration diagnostic based on a spectrally resolved lateral-shearing interferometer

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bahk, Seung -Whan; Dorrer, Christopher; Roides, Rick G.; Bromage, Jake

    2016-03-18

    Here, a simple diagnostic characterizing one-dimensional chromatic aberrations in a broadband beam is introduced. A Ronchi grating placed in front of a spectrometer entrance slit provides spectrally coupled spatial phase information. The radial-group delay of a refractive system and the pulse-front delay of a wedged glass plate have been characterized accurately in a demonstration experiment.

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

    SciTech Connect (OSTI)

    Zwink, AB; Turner, DD

    2012-03-19

    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.

  12. Arctic Mixed-Phase Cloud Properties from AERI Lidar Observations: Algorithm and Results from SHEBA

    SciTech Connect (OSTI)

    Turner, David D.

    2005-04-01

    A new approach to retrieve microphysical properties from mixed-phase Arctic clouds is presented. This mixed-phase cloud property retrieval algorithm (MIXCRA) retrieves cloud optical depth, ice fraction, and the effective radius of the water and ice particles from ground-based, high-resolution infrared radiance and lidar cloud boundary observations. The theoretical basis for this technique is that the absorption coefficient of ice is greater than that of liquid water from 10 to 13 ?m, whereas liquid water is more absorbing than ice from 16 to 25 ?m. MIXCRA retrievals are only valid for optically thin (?visible < 6) single-layer clouds when the precipitable water vapor is less than 1 cm. MIXCRA was applied to the Atmospheric Emitted Radiance Interferometer (AERI) data that were collected during the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment from November 1997 to May 1998, where 63% of all of the cloudy scenes above the SHEBA site met this specification. The retrieval determined that approximately 48% of these clouds were mixed phase and that a significant number of clouds (during all 7 months) contained liquid water, even for cloud temperatures as low as 240 K. The retrieved distributions of effective radii for water and ice particles in single-phase clouds are shown to be different than the effective radii in mixed-phase clouds.

  13. ARM - Publications: Science Team Meeting Documents

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

    a function of temperature. Then using observed MODIS solar radiances for the CEPEX case study, the small mode was adjusted slightly to yield the observed radiances. We are...

  14. Characterization of near-terahertz complementary metal-oxide semiconductor circuits using a Fourier-transform interferometer

    SciTech Connect (OSTI)

    Arenas, D. J.; Shim, Dongha; Koukis, D. I.; Seok, Eunyoung; Tanner, D. B.; O, Kenneth K.

    2011-10-24

    Optical methods for measuring of the emission spectra of oscillator circuits operating in the 400-600 GHz range are described. The emitted power from patch antennas included in the circuits is measured by placing the circuit in the source chamber of a Fourier-transform interferometric spectrometer. The results show that this optical technique is useful for measuring circuits pushing the frontier in operating frequency. The technique also allows the characterization of the circuit by measuring the power radiated in the fundamental and in the harmonics. This capability is useful for oscillator architectures designed to cancel the fundamental and use higher harmonics. The radiated power was measured using two techniques: direct measurement of the power by placing the device in front of a bolometer of known responsivity, and by comparison to the estimated power from blackbody sources. The latter technique showed that these circuits have higher emission than blackbody sources at the operating frequencies, and, therefore, offer potential spectroscopy applications.

  15. Characterization of near-terahertz complementary metal-oxide semiconductor circuits using a Fourier-transform interferometer

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Arenas, D. J.; Shim, Dongha; Koukis, D. I.; Seok, Eunyoung; Tanner, D. B.; O, Kenneth K.

    2011-10-24

    Optical methods for measuring of the emission spectra of oscillator circuits operating in the 400-600 GHz range are described. The emitted power from patch antennas included in the circuits is measured by placing the circuit in the source chamber of a Fourier-transform interferometric spectrometer. The results show that this optical technique is useful for measuring circuits pushing the frontier in operating frequency. The technique also allows the characterization of the circuit by measuring the power radiated in the fundamental and in the harmonics. This capability is useful for oscillator architectures designed to cancel the fundamental and use higher harmonics. Themore » radiated power was measured using two techniques: direct measurement of the power by placing the device in front of a bolometer of known responsivity, and by comparison to the estimated power from blackbody sources. The latter technique showed that these circuits have higher emission than blackbody sources at the operating frequencies, and, therefore, offer potential spectroscopy applications.« less

  16. Evaluating Radiative Closure in the Middle-to-Upper Troposhere

    SciTech Connect (OSTI)

    Tobin, David C; Turner, David D; Knuteson, Robert O

    2013-01-02

    This project had two general objectives. The first is the characterization and improvement of the radiative transfer parameterization in strongly absorbing water vapor bands, as these strongly absorbing bands dictate the clear sky radiative heating rate. The second is the characterization and improvement of the radiative transfer in cirrus clouds, with emphasis on ensuring that the parameterization of the radiative transfer is consistent and accurate across the spectrum. Both of these objectives are important for understanding the radiative processes in the mid-to-upper troposphere. The research on this project primarily involved analysis of data from the First and Second Radiative Heating in Underexplored Bands Campaigns, RHUBC-I and II. This included a climate model sensitivity study using results from RHUBC-I. The RHUBC experiments are ARM-funded activities that directly address the objectives of this research project. A secondary effort was also conducted that investigated the trends in the long-term (~14 year) dataset collected by the Atmospheric Emitted Radiance Interferometer (AERI) at the ARM Southern Great Plains site. This work, which was primarily done by a post-doc at the University of Wisconsin – Madison under Dr. Turner’s direction, uses the only NIST-traceable instrument at the ARM site that has a well-documented calibration and uncertainty performance to investigate long-term trends in the downwelling longwave radiance above this site.

  17. 1

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

    1). Correspondingly, the absolute nadir radiance I( 5 ) at m 14 is 15.7 (radiance dimension is Wm -2 sr -1 m -1 ). This value I( 5 ) 15.7 was used here as a threshold...

  18. PowerPoint Presentation

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

    * Radiometric measurement quality * Accuracy of calculation (LBLRTMCHARTS) * Line parameters (HITRAN) * MTCKD continuum model * Extraterrestrial spectrum * Model inputs *...

  19. SWIR | Open Energy Information

    Open Energy Info (EERE)

    Thermographic Imaging Radiometrics SWIR Stereo Satellite Imagery Physical Properties The electromagnetic spectrum.1 References Protherm. Infrared Basics Internet. 2013....

  20. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    DETECTION HADRON REACTIONS MEASURING INSTRUMENTS NUCLEAR REACTIONS NUCLEON REACTIONS RADIATION DETECTION RADIATION DETECTORS Activation Nuclear Reaction Radiometric...

  1. ARM - SGP Central Facility

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

    Central Facility SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration...

  2. Observational determination of surface radiative forcing by CO2 from 2000 to 2010

    SciTech Connect (OSTI)

    Feldman, Daniel R.; Collins, William D.; Gero, P. Johnathan; Torn, Margaret S.; Mlawer, Eli J.; Shippert, Timothy R.

    2015-02-25

    The climatic impact of CO2 and other greenhouse gases is usually quantified in terms of radiative forcing1, calculated as the difference between estimates of the Earth’s radiation field from pre-industrial and present-day concentrations of these gases. Radiative transfer models calculate that the increase in CO2 since 1750 corresponds to a global annual-mean radiative forcing at the tropopause of 1.82 ± 0.19 W m-2 (ref. 2). However, despite widespread scientific discussion and modelling of the climate impacts of well-mixed greenhouse gases, there is little direct observational evidence of the radiative impact of increasing atmospheric CO2. Here we present observationally based evidence of clear-sky CO2 surface radiative forcing that is directly attributable to the increase, between 2000 and 2010, of 22 parts per million atmospheric CO2. The time series of this forcing at the two locations—the Southern Great Plains and the North Slope of Alaska—are derived from Atmospheric Emitted Radiance Interferometer spectra3 together with ancillary measurements and thoroughly corroborated radiative transfer calculations4. The time series both show statistically significant trends of 0.2 W m-2 per decade (with respective uncertainties of ±0.06 W m-2 per decade and ±0.07 W m-2 per decade) and have seasonal ranges of 0.1–0.2 W m-2. This is approximately ten per cent of the trend in downwelling longwave radiation5, 6, 7. These results confirm theoretical predictions of the atmospheric greenhouse effect due to anthropogenic emissions, and provide empirical evidence of how rising CO2 levels, mediated by temporal variations due to photosynthesis and respiration, are affecting the surface energy balance.

  3. Indirect and Semi-Direct Aerosol Campaign: The Impact of Arctic Aerosols on Clouds

    SciTech Connect (OSTI)

    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

    2011-02-01

    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.

  4. ARM - Publications: Science Team Meeting Documents

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

    radiometer time-height cross sections. The statistical comparison is made using angular radiance power spectra computed with a sophisticated spherical harmonics technique

  5. Tobin-DC

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

    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...

  6. Raciometry W. J:. Shaw and C. D. Whiteman Pacific Northwest Laboratory...

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

    compare satisfactorily with model integrations. Using the parameterized radiances and Gaussian tipping in one dimension, we have shown tnat the balloon-borne radiometer platform...

  7. Section 31

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

    over the intervals. The intervals are The upward and downward fluxes are found by Gaussian quadrature of the radiances. Heating rates are computed from the fluxes. Upward and...

  8. 1

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

    density data. These density profiles are computed using coincident pressure and temperature profiles derived from radiances measured by the ground-based AERI instrument...

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

    Open Energy Info (EERE)

    comparison to SEBASS. The land-leaving TIR radiance data were separated into brightness temperature and surface emissivity. TIR emissivity data are unique to each mineral and a...

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

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

    have been generated from 22.5 years of radiances and retrievals from the TIROS (television and infrared observation satellite) operational vertical sounder (TOVS). The flux...

  11. Recommendation of a Strategy

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

    Accelerating Radiance Using OpenCL on GPU Wangda Zuo, Ph.D. Simulation Research Group Energy and Environmental Technologies Division Lawrence Berkeley National Laboratory EETD...

  12. ARM - Publications: Science Team Meeting Documents: A Principal...

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

    high correlation in the observed radiance across the spectrum, and therefore a principal component analysis (PCA) can be used to separate and remove uncorrelated noise from the...

  13. Atlanta, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Global Energy Holdings Group formerly Xethanol Corporation Navajo Wind Energy Plum Combustion Radiance Solar Servidyne SilvaGas Corporation FERCO Enterprises Inc Solar Systems...

  14. ARM - Facility News Article

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

    ER-AERI Bookmark and Share Thanks to quick actions on the part of numerous ARM Climate Research Facility operations staff, an Extended Range Atmospheric Emitted Radiance...

  15. ARM - Publications: Science Team Meeting Documents

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

    Albedo 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...

  16. Microsoft PowerPoint - 04_bedka_turner_awg_advertisement.ppt...

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

    Properties at Niamey, Niger y g Using Downwelling Infrared Radiance Data Sarah Bedka and Dave Turner Space Science and Engineering Center University of Wisconsin Madison...

  17. ARM TR-008

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

    in the observed radiance across the spectrum to reduce the uncorrelated random error in the data using principal component analysis (PCA). The VAP automatically...

  18. Nazim Bharmal Anthony Slingo Jeff Settle Gary Robinson Helen...

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

    the TOA radiances every 15 min from Geostationary Earth Radiation Budget (GERB). * Edwards-Slingo RT code used to calculate consistent flux components. * Or, use measurements...

  19. ARM - Publications: Science Team Meeting Documents: AERI Thermodynamic...

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

    AERI radiances (including boundary facility AERI data) using RUC numerical model profiles to describe the above boundary layer atmospheric state. http:cimss.ssec.wisc.eduaeri...

  20. ARM - Facility News Article

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

    Spectrometer Performs Well in Field Evaluation Bookmark and Share These full spectrum plots show radiance data collected by the SWS at five time intervals over the course...

  1. ARM_AVP_SHIS_Taylor_Turner_pdf.ppt

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

    Radiances for Radiative Transfer Temp & Water Vapor Retrievals Cloud Radiative Prop. Surface Emissivity & T Trace Gas Retrievals Calibration Validation CO 2 CO...

  2. partain(2)-98.pdf

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

    figure, please see http:www.arm.govdocsdocumentstechnical conf9803partain (2)-98.pdf.) Figure 3. Radiance errors as a function of wave- length. Errors associated with...

  3. DeKalb County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Radiance Solar Resource Services Group (RSG) Servidyne SilvaGas Corporation FERCO Enterprises Inc Solar Systems USA Suniva Inc formerly Solarity Sustainable World Capital TCE...

  4. Georgia's 5th congressional district: Energy Resources | Open...

    Open Energy Info (EERE)

    Radiance Solar Resource Services Group (RSG) Servidyne SilvaGas Corporation FERCO Enterprises Inc Solar Systems USA Suniva Inc formerly Solarity Sustainable World Capital TCE...

  5. Fulton County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Wind Energy Plum Combustion Radiance Solar Servidyne SilvaGas Corporation FERCO Enterprises Inc Solar Systems USA Suniva Inc formerly Solarity Sustainable World Capital TCE...

  6. ARM - Publications: Science Team Meeting Documents

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

    Hourly observations of 6.7 micron water vapor radiances from geostationary satellites are combined with radiosonde observations and Raman lidar measurements to document the diurnal...

  7. Slide 1

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

    7 Overlap will be done at SPL... VAP MPLNOR Optical depthextinction retrievals - AERI IR Spectral Radiance Thunderhead 247, Rapid Scan critical Established No issues spectra...

  8. Discussion Motivation

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

    radar and lidar, polarization sensitive, elastic and molecular lidars) - Solar and IR radiation measurements (radiance and irradiance direct and diffuse, broadband and...

  9. Nordeen-ML

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

    1-km Geostationary Meteorological Satellite (GMS-5) visible (VIS) 0.65m and infrared (IR) 11m radiances, respectively, were analyzed using the layer bispectral threshold...

  10. Section 26

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

    5 Atmospheric Radiation Measurement Science Applications of Atmospheric Emitted Radiance ... Proceedings of the Seventh Atmospheric Radiation Measurement (ARM) Science Team Meeting. ...

  11. Final Report: Global Change Research with Unmanned Aerospace Vehicles UAV Applications for Studying the Radiation and Optical Properties of Upper Tropospheric Clouds, February 1, 1995 - March 31, 1998

    SciTech Connect (OSTI)

    Stephens, Graeme L.

    1998-01-31

    This paper describes the design and characteristics of a scanning spectral polarimeter which is capable of measuring spectral radiances and fluxes in the range between 0.4 rm to 4.0 pm. The instrument characteristics are described and a discussion of the procedures to calibrate the unpolarized radiances and fluxes are prescribed along the detailed error analyses of this calibration.

  12. ARM - Publications: Science Team Meeting Documents: The Potential...

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

    Ed University of ColoradoCIRES Cimini, Domenico CETEMPS, University of L'Aquila, Italy Uttal, Taneil NOAAEnvironmental Technology Laboratory Radiometric brightness ...

  13. ARM - Publications: Science Team Meeting Documents

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

    was implemented, incorporating improved cloud screening and aerosol mixture discrimination thresholds and algorithms as well as improved instrument radiometric and geometric...

  14. Category:Electrical Techniques | Open Energy Information

    Open Energy Info (EERE)

    Resistivity Survey E Electrical Techniques Electromagnetic Techniques R Radiometrics S Self Potential T Telluric Survey Retrieved from "http:en.openei.orgw...

  15. Geophysical Methods | Open Energy Information

    Open Energy Info (EERE)

    Methods Magnetic Methods Gravity Methods Radiometric Methods Seismic methods dominates oil and gas exploration, and probably accounts for over 80% of exploration dollars spent...

  16. Passive Sensors | Open Energy Information

    Open Energy Info (EERE)

    Imaging Long-Wave Infrared Multispectral Imaging Near Infrared Surveys Oblique Aerial & Ground Visible Band & Thermographic Imaging Radiometrics SWIR Stereo Satellite Imagery...

  17. SGP Overview Map

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

    Overview Map SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility...

  18. SGP Shipment Notification Form

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

    PlainsShipment Notification Form SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric...

  19. Soil Sampling At Reese River Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    References William R. Henkle Jr., Wayne C. Gundersen, Thomas D. Gundersen (2005) Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three...

  20. Soil Sampling At Silver Peak Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    References William R. Henkle Jr., Wayne C. Gundersen, Thomas D. Gundersen (2005) Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three...

  1. Field Mapping At Silver Peak Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    References William R. Henkle Jr., Wayne C. Gundersen, Thomas D. Gundersen (2005) Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three...

  2. Field Mapping At Reese River Area (Henkle, Et Al., 2005) | Open...

    Open Energy Info (EERE)

    References William R. Henkle Jr., Wayne C. Gundersen, Thomas D. Gundersen (2005) Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three...

  3. Research Highlight

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

    of radiosondes launched during the 2004 NSA Arctic Winter Radiometric Experiment. Dual-radiosonde launch of the Vaisala RS90 and Chilled Mirror radiosondes is pictured here....

  4. Yoho receives NNSA Fellowship

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

    missions, at the new TA-55 facility for analytical chemistry (RLUOB). He will also apply Industrial Engineering and quality assurance principles to develop radiometric assay...

  5. ARM - Campaign Instrument - mas

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

    below or call us at 1-888-ARM-DATA. Send Campaign Instrument : NASA MODIS Airborne Simulator (MAS) Instrument Categories Airborne Observations, Radiometric Campaigns Cloud LAnd...

  6. ARM - Facility News Article

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

    in a first person view, using curiosity as their guide. Vivid Learning Systems' Nick Bauer takes stills on top of the Radiometric Calibration Facility. Vivid Learning Systems'...

  7. ARM - Campaign Instrument - nfov

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

    Cloud Properties, Radiometric Campaigns MASRAD: Cloud Study from the 2NFOV at Pt. Reyes Field Campaign Download Data Point Reyes CA, USA; Mobile Facility, 2005.06.02 -...

  8. ARM - Site Instruments

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

    Radiation Radiometric Browse Plots Browse Data Single installation TDMA Tandem Differential Mobility Analyzer Aerosols Not Online TSI Total Sky Imager Cloud...

  9. ARM - Measurement - Photosynthetically Active Radiation

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

    radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis Categories Radiometric Instruments The above measurement is...

  10. Low level absorptance measurements and scans of high performance optical coatings for atomic vapor laser isotope separation applications

    SciTech Connect (OSTI)

    Chow, R.; Taylor, J.R.; Wu, Z.L.; Krupka, R.; Yang, T.

    1998-01-24

    A surface thermal lensing and a radiometric technique was used to characterize the absorptance dependence on time, power, site, and technique of low absorptance optical multilayered coatings.

  11. DISCLAIMER

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

    mass. The straight line is extrapolated to zero air mass. The detector reading at this point corresponds to a radiometric temperature, which equals the system noise temperature...

  12. ARM - Instrument - prp

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

    Instrument Categories Radiometric The Portable Radiation Package (PRP) is an instrument suite to collect atmospheric radiation measurements on a moving platform. The instrument ...

  13. The place for sodars in a high-technology environment.

    SciTech Connect (OSTI)

    Coulter, R. L.

    1998-06-12

    In an era of increasingly complex technology, some of the atmospheric quantities most difficult to measure and observe are yielding their secrets to increasingly complex instruments and combinations of instruments. For example, water vapor profiles, a long-time nemesis to detailed examination, have become measurable with the use of Raman lidar; temperature profile measurements are becoming relatively routine with radio acoustic sounding systems (RASSs) or infrared Fourier transform instrumentation such as the atmospheric emitted radiance interferometer (AERI); and radar, lidar, or combinations of the two are enabling wind profile measurements to increasing altitudes. What, then, is the role of the relatively pedestrian sodar in such an era? Because the sodar's propagation speed in the atmosphere is six orders of magnitude smaller than that of its electromagnetic counterparts (3 x 10{sup 2} vs. 3 x 10{sup 8} m/s), severely limiting its rate of interrogation, and because the sodar's signal limit frequency modulation techniques, many high-technology advances associated with enormous increases in computation speed and available memory have had relatively little direct impact on acoustic remote sensing. However, the principal elements of acoustic remote sensing continue to make it a useful, even essential, tool for obtaining a better understanding of the physics of the lower atmosphere. The sodar's ''slow'' propagation speed provides relatively easy access to the region between 10 m and several hundred meters above the surface that is often inaccessible to other instruments. This is the region of the atmosphere where conditions often change radically with height, the ''matching'' region between large-scale forcing and small-scale surface heterogeneities that can have large effects on human activity. The atmosphere provides signals for sodars that are rich in content because the phase speed of sound is dependent on the atmosphere itself and is tied directly to the atmosphere's temperature and wind structure. Hence, the signals from acoustic remote sensing instruments can provide boundary conditions crucial for the proper operation of numerical models of the atmosphere whose output is becoming increasingly important in individual and business decision making.

  14. Estimating atmospheric parameters and reducing noise for multispectral imaging

    DOE Patents [OSTI]

    Conger, James Lynn

    2014-02-25

    A method and system for estimating atmospheric radiance and transmittance. An atmospheric estimation system is divided into a first phase and a second phase. The first phase inputs an observed multispectral image and an initial estimate of the atmospheric radiance and transmittance for each spectral band and calculates the atmospheric radiance and transmittance for each spectral band, which can be used to generate a "corrected" multispectral image that is an estimate of the surface multispectral image. The second phase inputs the observed multispectral image and the surface multispectral image that was generated by the first phase and removes noise from the surface multispectral image by smoothing out change in average deviations of temperatures.

  15. Research Highlight

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

    H.E. Revercomb, H.M. Woolf, and H.B. Howell, 1998: "Meteorological applications of temperature and water vapor retrievals from the ground-based atmospheric emitted radiance...

  16. ARM - Publications: Science Team Meeting Documents

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

    Evaluation of Upper Tropospheric Water Vapor in the NCAR Community Climate Model, CCM3, Using Modeled and Observed HIRS Radiances Iacono, M.J., Delamere, J.S., Mlawer, E.J., and...

  17. Section 117

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

    Chen 1994, Minnis et al. 1995). GOES visible calibration is given by the following equation: where L is radiance (Wm sr ) and D is 8-bit digital count. -2 -1 Due to the lack of...

  18. SLA-74.0103 No For(:iqri

    Office of Scientific and Technical Information (OSTI)

    Antia ,craft b1issiJ.e (SIAM). A description of the optical system is included, and models of target radiant intensity, atmospheric transmis- sion, and background radiance...

  19. Energy Department Releases Updates to EnergyPlus and OpenStudio...

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

    OpenStudio 1.7.0 OpenStudio is DOE's open-source software development kit for whole-building energy modeling using EnergyPlus and daylight analysis using Radiance. DOE releases ...

  20. Section 63

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

    R.K. Garcia, P. van Delst, and W.L. Smith University of Wisconsin - Madison Madison, ... problem (which grew to about 4% and W.L. Smith, 1996: Atmospheric Emitted Radiance in the ...

  1. ARM - Publications: Science Team Meeting Documents

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

    participate in the ARM Mixed-Phase Arctic Cloud Experiment in the Fall of 2004. From the UAV platform, the S-HIS measures the up and downwelling infrared radiance at high spectral...

  2. 1

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

    be affected by surface features up to 5 km away (Ricchiazzi and Gautier 1998). Data Processing ASD radiance was measured for a white reference (Spectralon) before and after each...

  3. Section 2

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

    backscattering profiles measured by an MRI cloud lidar, spectral solar and infra-red (IR) zenith radiance measured by the spectroradiometers, and the solar and IR fluxes at the...

  4. ARM - Publications: Science Team Meeting Documents

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

    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,...

  5. ARM - Publications: Science Team Meeting Documents

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

    The Darwin ARM CART Site 2003 Platt IOP: Description and Correlation Between IR Radiance and Microwave Water Vapor Path Platt, C.M.R.(a,b) and Bennett, J.A.(b), Colorado State...

  6. Section 14

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

    An Analysis of Ground-Based Polarimetric Sky Radiance Measurements B. Cairns Columbia University New York, New York B. E. Carlson and A. A. Lacis NASA/Goddard Institute for Space Studies New York, New York E. Russell Spectir Corporation Goleta, California Abstract An analysis of polarimetric sky radiance measurements made with the engineering model of the Galileo photopolarimeter/radiometer at wavelengths of 410 nm and 678 nm is presented. The polarization measurements are accurate to within

  7. Research Highlight

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

    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

  8. Research Highlight

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

    Correction Method for Infrared Detector Confirmed; Error in Clear Sky Bias Condition Remains Unresolved Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: N/A AERI data from January 2004 at the ARM North Slope of Alaska locale shows the observed radiance for two AERI systems with significantly different hot blackbody temperatures. Residuals are within 1% of the ambient radiance

  9. ARM - Publications: Science Team Meeting Documents: Nighttime cirrus

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

    detection using AIRS radiances and total column precipitable water Nighttime cirrus detection using AIRS radiances and total column precipitable water Kahn, Brian Jet Propulsion Laboratory Liou, Kuo-Nan UCLA A method of cirrus detection at nighttime is presented that utilizes 3.8 and 10.4 m infrared (IR) window brightness temperature differences (dBT) and total column precipitable water (PW) measurements. This technique is applied to the Atmospheric Infrared Sounder (AIRS) and Advanced

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

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

    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

  11. Chemical micro-sensor

    DOE Patents [OSTI]

    Ruggiero, Anthony J.

    2005-05-03

    An integrated optical capillary electrophoresis system for analyzing an analyte. A modulated optical pump beam impinges on an capillary containing the analyte/buffer solution which is separated by electrophoresis. The thermally-induced change in the index of refraction of light in said electrophoresis capillary is monitored using an integrated micro-interferometer. The interferometer includes a first interferometer arm intersecting the electrophoresis capillary proximate the excitation beam and a second, reference interferometer arm. Changes in index of refraction in the analyte measured by interrogating the interferometer state using white light interferometry and a phase-generated carrier demodulation technique. Background thermo-optical activity in the buffer solution is cancelled by splitting the pump beam and exciting pure buffer solution in a second section of capillary where it crosses the reference arm of the interferometer.

  12. Chromatic-aberration diagnostic based on a spectrally resolved

    Office of Scientific and Technical Information (OSTI)

    lateral-shearing interferometer (Journal Article) | DOE PAGES Publisher's Accepted Manuscript: Chromatic-aberration diagnostic based on a spectrally resolved lateral-shearing interferometer This content will become publicly available on March 18, 2017 « Prev Next » Title: Chromatic-aberration diagnostic based on a spectrally resolved lateral-shearing interferometer Authors: Bahk, Seung-Whan ; Dorrer, Christophe ; Roides, Rick G. ; Bromage, Jake Publication Date: 2016-03-18 OSTI Identifier:

  13. Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-Borne

    Office of Scientific and Technical Information (OSTI)

    Radio Interferometer (Journal Article) | SciTech Connect Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-Borne Radio Interferometer Citation Details In-Document Search Title: Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-Borne Radio Interferometer Authors: Detrixhe, M. ; Besson, D. ; /Kansas U. ; Gorham, P.W. ; Allison, P. ; /Hawaii U. ; Baughmann, B. ; Beatty, J.J. ; /Ohio State U. ; Belov, K. ; /UCLA ; Bevan, S. ; /University Coll. London ;

  14. Search for: kondo effect | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Interferometers Dias Da Silva, Luis G ; Sandler, Nancy ; Simon, Pascal ; ... K. ; Bauer, E. D. ; Ronning, F. ; Thompson, J. D. ; De Souza, N. R. ; et al We ...

  15. Fiber optic geophysical sensors

    DOE Patents [OSTI]

    Homuth, E.F.

    1991-03-19

    A fiber optic geophysical sensor is described in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects. 2 figures.

  16. Development of a Multi-Point Microwave Interferometry (MPMI)...

    Office of Scientific and Technical Information (OSTI)

    A multi-point microwave interferometer (MPMI) concept was developed for non-invasively tracking a shock, reaction, or detonation front in energetic media. Initially, a ...

  17. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (1) electron sources (1) fabry-perot interferometer (1) laser radiation (1) lasers (1) nuclear physics and radiation physics (1) particle accelerators (1) polarimetry ...

  18. Beamline 1.4.4

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

    cm-1 Interferometer resolution up to 0.125 cm-1 Endstations Thermo Nicolet Nexus 870 FTIR, Continuum XL IR microscope (N2 purged) Characteristics Computerized sample stage,...

  19. ARM - Campaign Instrument - pdi

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

    Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Phase Doppler Interferometer (PDI) Instrument Categories Airborne Observations, Cloud Properties...

  20. ARM - Facility News Article

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

    30, 2007 Facility News Interferometers Compared for ARM Mobile Facility Deployment in China Bookmark and Share During the 2-week instrument comparison, the AERI planned for Linze...

  1. Laser Driven Dynamic Loading of Condensed Matter

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

    and frame cameras: point and line-imaging velocimeters (VISAR) for particle velocity history measurement transient imaging displacement interferometer (TIDI) for 2D...

  2. Stratigraphic Nomenclature of Volcanic Rocks in the Jemez Mountains...

    Open Energy Info (EERE)

    the formations are refined by radiometric dating. Authors Roy A. Bailey, Robert Leland Smith and Clarence Samuel Ross Published U.S. Geological Survey, 1969 DOI Not Provided Check...

  3. ARM - Campaign Instrument - psp-eppley

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

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Eppley PSP (PSP-EPPLEY) Instrument Categories Radiometric Campaigns 1995...

  4. ARM - 2006 ARM Science Team Meeting

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

    the 2004 North Slope of Alaska Winter Radiometric Experiment 11:00 am - 11:15 am Dave Turner: Clouds with Low Liquid Water Path: An Update from CLOWD Research Reports from the AWG...

  5. Posters Comparisons of Brightness Temperature Measurements and...

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

    radiometric observations of atmospheric emission and attenuation at 20.6, 31.65, and 90 GHz: A comparison of measurements and theory. IEEE Trans. Antennas Prop. AP-38:1569...

  6. ARM - Campaign Instrument - uav-proteus

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

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : UAV Proteus (UAV-PROTEUS) Instrument Categories Airborne Observations, Radiometric...

  7. ARM - Campaign Instrument - uav-egrett

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

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : UAV-Egrett (UAV-EGRETT) Instrument Categories Airborne Observations, Radiometric Campaigns...

  8. ARM - Publications: Science Team Meeting Documents

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

    Shortwave Cloud Radiative Forcing Using Ground-Based Broadband Radiometric Time-Series Cole, J.N.S.(a), Long, C.N.(b), and Ackerman, T.P.(b), The Pennsylvania State University...

  9. ARM - Datastreams - gms5

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

    below or call us at 1-888-ARM-DATA. Send Datastream : GMS5 GMS-5: visible 1.25-km res., IR 5-km resolution Active Dates 1996.10.11 - 2003.02.16 Measurement Categories Radiometric...

  10. ARM - Campaign Instrument - psp-eppley-modified

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

    us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Modified Eppley PSP (PSP-EPPLEY-MODIFIED) Instrument Categories Radiometric Campaigns Diffuse Shortwave IOP...

  11. Research Highlight

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

    Microwave and Millimeter-Wave Radiometric and Radiosonde Observations in an Arctic Environment Download a printable PDF Submitter: Westwater, E. R., University of Colorado Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Mattioli V, ER Westwater, D Cimini, AJ Gasiewski, M Klein, and V Leuski. 2008. "Microwave and millimeter-wave radiometric and radiosonde observations in an arctic environment." Journal of Atmospheric and Oceanic Technology,

  12. ARM - Instrument - rad

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

    govInstrumentsrad Documentation 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 : Radiation Measurements at AMF (RAD) Instrument Categories Radiometric Picture of the radiometric instruments at the ancillary site in Niger General Overview While preparing for the ARM Mobile Facility deployment in Niger, the science team identified the need for instrumentation at an off-site location to compare radiative

  13. ARM - Campaign Instrument - mir

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

    govInstrumentsmir Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Millimeter-wave Imaging Radiometer (MIR) Instrument Categories Atmospheric Profiling, Radiometric Campaigns Millimeter-wave Radiometric Arctic Winter Measurements Experiment [ Download Data ] North Slope Alaska, 1999.02.27 - 1999.03.30 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream

  14. Microsoft PowerPoint - ARMSTM_2007_Westwater_et_al_02.ppt

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

    EXPERIMENTS 1. Arctic Winter Radiometric Experiment 2004 Period: March 9-April 9 2004 Location: ARM NSA, Barrow, Alaska 2. RHUBC (http://science.arm.gov/rhubc/) Period: February 22, 2007 to present Location: ARM NSA, Barrow, Alaska GOALS * Provide real time retrievals of PWV and CLP * Compare observations with ARM and Radiometrics millimeter-wave radiometers * Forward model radiative transfer studies Results from the Ground-based Scanning Radiometer's Deployments at the NSA in 2004 and 2007

  15. Apparatus and method for laser velocity interferometry

    DOE Patents [OSTI]

    Stanton, Philip L.; Sweatt, William C.; Crump, Jr., O. B.; Bonzon, Lloyd L.

    1993-09-14

    An apparatus and method for laser velocity interferometry employing a fixed interferometer cavity and delay element. The invention permits rapid construction of interferometers that may be operated by those non-skilled in the art, that have high image quality with no drift or loss of contrast, and that have long-term stability even without shock isolation of the cavity.

  16. ARM - Publications: Science Team Meeting Documents

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

    AERI Observations in the Arctic: Monthly-Average Radiance Spectra and Longwave Cloud Radiative Forcing Walden, V.P., Revercomb, H.E., Knuteson, R.O., Best, F.A., Ciganovich, N., Dedecker, R.G., Dirkx, T., Garcia, R.K., Herbsleb, R., Howell, H.B., McRae, D., Short, J., and Tobin, D., Cooperative Institute of Mesoscale Meteorological Studies/Space Science and Engineering Center/University of Wisconsin Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting Atmospheric Emitted Radiance

  17. ARM - Publications: Science Team Meeting Documents

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

    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

  18. Marshak_ARMSTM_SWS.ppt

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

    An increase in aerosol loading moves Regime 0 toward the upper-right direction, meaning that radiances increase at both 870 and 1640 nm and the former increases faster than the latter. In Fig. (a), we increase aerosol optical depth from 0.05 to 0.15, 0.02 to 0.08 for 870 and 1640 nm, respectively. 4 µm and 8 µ m are referred to cloud drop sizes. 4. An increase in aerosol drop size moves Regime 0 toward the lower-left direction, meaning that the radiances decrease at both 870 and 1640 nm and

  19. Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne

    Office of Scientific and Technical Information (OSTI)

    Radio Interferometer (Journal Article) | SciTech Connect Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer Citation Details In-Document Search Title: Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer Authors: Hoover, S. ; /UCLA ; Nam, J. ; /Ewha Women's U., Seoul ; Gorham, P.W. ; /Hawaii U. ; Grashorn, E. ; /Ohio State U. ; Allison, P. ; /Hawaii U. ; Barwick, S.W. ; /UC, Irvine ; Beatty, J.J. ; /Ohio

  20. Optical domain analog to digital conversion methods and apparatus

    DOE Patents [OSTI]

    Vawter, Gregory A

    2014-05-13

    Methods and apparatus for optical analog to digital conversion are disclosed. An optical signal is converted by mapping the optical analog signal onto a wavelength modulated optical beam, passing the mapped beam through interferometers to generate analog bit representation signals, and converting the analog bit representation signals into an optical digital signal. A photodiode receives an optical analog signal, a wavelength modulated laser coupled to the photodiode maps the optical analog signal to a wavelength modulated optical beam, interferometers produce an analog bit representation signal from the mapped wavelength modulated optical beam, and sample and threshold circuits corresponding to the interferometers produce a digital bit signal from the analog bit representation signal.

  1. ARM - Datastreams - goes7rad

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

    rad 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 : GOES7RAD GOES-7: radiance, channels 7, 10, 12

  2. PowerPoint Presentation

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

    SAM Data Cirrus (OD1.6) Altostratus (OD 1.3) 10 +3 10 +1 10 -1 Radiance (Wcm 2 srm) 0.01 0.10 10.0 1.00 Angle From Center of Sun (deg) SAM Data Cirrus (OD1.6) Altostratus...

  3. Ultra-Relativistic Magnetic Monopole Search with the ANITA-II...

    Office of Scientific and Technical Information (OSTI)

    with the ANITA-II Balloon-Borne Radio Interferometer Citation Details In-Document Search Title: Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-Borne ...

  4. Title Goes Here

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

    beam size with a two-slit interferometer. An additional branch line contains a power meter andor photo-diode for beam intensity measurements. Due to the need to provide...

  5. Beamline 1.4.4

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

    800 - 10,000 cm-1 Interferometer resolution up to 0.125 cm-1 Endstations Thermo Nicolet Nexus 870 FTIR, Continuum XL IR microscope (N2 purged) Characteristics Computerized sample...

  6. Section 69

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

    is a development of the AERI-a field of view was ahead of the ship's bow wave. The key component in the ARM-TWP instrument suite, and to interferometer integrates measurements...

  7. Beamline 5.4.1

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

    range 650 - 10,000 cm-1 Interferometer resolution Up to 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage,...

  8. Beamline 1.4.3

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

    cm-1 Interferometer resolution Up to 0.125 cm-1 Endstations Nicolet Magna 760 FTIR, Nic-Plan IR Microscope (N2 purged) Characteristics Motorized sample stage, 0.1-micron...

  9. Collaborative Initiative in Biomedical Imaging to Study Complex Diseases

    SciTech Connect (OSTI)

    Lin, Weili; Fiddy, Michael A.

    2012-03-31

    The work reported addressed these topics: Fluorescence imaging; Optical coherence tomography; X-ray interferometer/phase imaging system; Quantitative imaging from scattered fields, Terahertz imaging and spectroscopy; and Multiphoton and Raman microscopy.

  10. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    of a label-free Mach-Zehnder interferometer (MZI) optical biosensor that incorporates a highly dispersive one-dimensional (1D) photonic crystal in one arm are presented. ...

  11. ARM - Publications: Science Team Meeting Documents: Validation...

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

    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...

  12. Beamline 5.4.1

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

    650 - 10,000 cm-1 Interferometer resolution Up to 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution;...

  13. Beamline 1.4.3

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

    Interferometer resolution Up to 0.125 cm-1 Endstations Nicolet Magna 760 FTIR, Nic-Plan IR Microscope (N2 purged) Characteristics Motorized sample stage, 0.1-micron resolution,...

  14. High-speed

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

    speed three-wave polarimeter-interferometer diagnostic for Madison symmetric torus B. H. Deng, D. L. Brower, and W. X. Ding Electrical Engineering Department, University of California, Los Angeles, California 90095 M. D. Wyman, B. E. Chapman, and J. S. Sarff Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 ͑Received 5 May 2006; presented on 10 May 2006; accepted 11 June 2006; published online 27 September 2006͒ A high-speed three-wave polarimeter-interferometer

  15. Phase comparator apparatus and method

    DOE Patents [OSTI]

    Coffield, F.E.

    1985-02-01

    This invention finds especially useful application for interferometer measurements made in plasma fusion devices (e.g., for measuring the line integral of electron density in the plasma). Such interferometers typically use very high intermediate frequencies (e.g., on the order of 10 to 70 MHz) and therefore the phase comparison circuitry should be a high speed circuit with a linear transfer characteristic so as to accurately differentiate between small fractions of interference fringes.

  16. Separation of niobium and tantalum using a chelating ion exchange resin with N-benzoyl phenyl hydroxyl amine as functional group

    SciTech Connect (OSTI)

    Pobi, M.; Das, J. )

    1993-04-01

    Niobium is separated from Ta and V by elution with 0.5 M HF in a column of chelating resin containing N-benzoyl-N-phenyl-hydroxylamine (NBPHA) as a function group. Niobium and tantalum can also be separated using their differential distribution coefficient and elution behavior, monitored by radiometric and also be spectrophotometric methods. 15 refs., 1 fig., 2 tabs.

  17. racette-99.PDF

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

    Millimeter Wave Radiometric Arctic Winter Experiment P. E. Racette and E. Kim National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland E. R. Westwater, Y. Han, and M. Klein CIRES, University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado A. Gasiewski National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado K. B. Widener Pacific Northwest National

  18. ARM - SGP Contacts

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

    Contacts SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Contacts Site Manager - Nicki Hickmon, Argonne National Laboratory Site Operations Manager - John Schatz, SGP Site Operations Office Central Facility

  19. ARM - SGP Geographic Information By Facility

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

    Geographic Information By Facility SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Geographic Information By Facility Note: BF = Boundary Facility, EF = Extended Facility, and IF = Intermediate Facility Site

  20. ARM - SGP Operations

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

    Operations SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Operations Routine Operations SGP central facility offices. SGP central facility offices. The overwhelming majority of the measurements with the

  1. ARM - Campaign Instrument - kandz-cm21-schenk-star

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

    -schenk-star Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Kipp and Zonen-CM21 Schenk Star (KANDZ-CM21-SCHENK-STAR) Instrument Categories Radiometric Campaigns

  2. ARM - Datastreams - 02taorad165e5n

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

    n 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 : 02TAORAD165E5N Tropical Atmosphere Ocean Buoys: radiometric data at 165 E, 5 N, 2-min avg Active Dates 1997.06

  3. ARM - Datastreams - 02taorad165e5s

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

    s 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 : 02TAORAD165E5S Tropical Atmosphere Ocean Buoys: radiometric data at 165 E, 5 S, 2-min avg Active Dates 1998.01

  4. Apparatus for measuring surface movement of an object that is subjected to external vibrations

    DOE Patents [OSTI]

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

    1997-01-01

    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.

  5. Method and apparatus for measuring surface movement of an object using a polarizing interfeometer

    DOE Patents [OSTI]

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

    1995-01-01

    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.

  6. Apparatus for measuring surface movement of an object that is subjected to external vibrations

    DOE Patents [OSTI]

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

    1997-04-22

    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.

  7. Method and apparatus for measuring surface movement of a solid object that is subjected to external vibrations

    DOE Patents [OSTI]

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

    1995-01-01

    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.

  8. Combined dispersive/interference spectroscopy for producing a vector spectrum

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    2002-01-01

    A method of measuring the spectral properties of broadband waves that combines interferometry with a wavelength disperser having many spectral channels to produce a fringing spectrum. Spectral mapping, Doppler shifts, metrology of angles, distances and secondary effects such as temperature, pressure, and acceleration which change an interferometer cavity length can be measured accurately by a compact instrument using broadband illumination. Broadband illumination avoids the fringe skip ambiguities of monochromatic waves. The interferometer provides arbitrarily high spectral resolution, simple instrument response, compactness, low cost, high field of view and high efficiency. The inclusion of a disperser increases fringe visibility and signal to noise ratio over an interferometer used alone for broadband waves. The fringing spectrum is represented as a wavelength dependent 2-d vector, which describes the fringe amplitude and phase. Vector mathematics such as generalized dot products rapidly computes average broadband phase shifts to high accuracy. A Moire effect between the interferometer's sinusoidal transmission and the illumination heterodynes high resolution spectral detail to low spectral detail, allowing the use of a low resolution disperser. Multiple parallel interferometer cavities of fixed delay allow the instantaneous mapping of a spectrum, with an instrument more compact for the same spectral resolution than a conventional dispersive spectrometer, and not requiring a scanning delay.

  9. Method and apparatus for measuring surface movement of a solid object that is subjected to external vibrations

    DOE Patents [OSTI]

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

    1995-04-25

    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.

  10. Apparatus and method for performing two-frequency interferometry

    DOE Patents [OSTI]

    Johnston, R.G.

    1988-01-25

    The present apparatus includes a two-frequency, Zeeman Effect laser and matched, doubly refracting crystals in the construction of an accurate interferometer. Unlike other interferometric devices, the subject invention exhibits excellent phase stability owing to the use of single piece means for producing parallel interferometer arms, making the interferometer relatively insensitive to thermal and mechanical instabilities. Interferometers respond to differences in optical path length between their two arms. Unlike many interferometric techniques, which require the measurement of the location of interference fringes in a brightly illuminated background, the present invention permits the determination of the optical path length difference by measuring the phase of an electronic sine wave. The present apparatus is demonstrated as a differential thermooptic spectrometer for measuring differential optical absorption simply and accurately which is but one of many applications therefor. The relative intensities of the heating beams along each arm of the interferometer can be easily adjusted by observing a zero phase difference with identical samples when this condition is obtained. 6 figs.

  11. Apparatus and method for performing two-frequency interferometry

    DOE Patents [OSTI]

    Johnston, Roger G. (Los Alamos, NM)

    1990-01-01

    The present apparatus includes a two-frequency, Zeeman-effect laser and matched, doubly refracting crystals in the construction of an accurate interferometer. Unlike other interferometric devices, the subject invention exhibits excellent phase stability owing to the use of single piece means for producing parallel interferometer arms, making the interferometer relatively insensitive to thermal and mechanical instabilities. Interferometers respond to differences in optical path length between their two arms. Unlike many interferometric techniques, which require the measurement of the location of interference fringes in a brightly illuminated background, the present invention permits the determination of the optical path length difference by measuring the phase of an electronic sine wave. The present apparatus is demonstrated as a differential thermooptic spectrometer for measuring differential optical absorption simply and accurately which is but one of many applications therefor. The relative intensities of the heating beams along each arm of the interferometer can be easily adjusted by observing a zero phase difference with identical samples when this condition is obtained.

  12. Refractive index and absorption detector for liquid chromatography based on Fabry-Perot interferometry

    DOE Patents [OSTI]

    Yeung, E.S.; Woodruff, S.D.

    1984-06-19

    A refractive index and absorption detector are disclosed for liquid chromatography. It is based in part on a Fabry-Perot interferometer and is used for the improved detection of refractive index and absorption. It includes a Fabry-Perot interferometer having a normally fixed first partially reflecting mirror and a movable second partially reflecting mirror. A chromatographic flow-cell is positioned between the mirrors along the optical axis of a monochromatic laser beam passing through the interferometer. A means for deriving information about the interference fringes coming out of the interferometer is used with a mini-computer to compute the refractive index of the specimen injected into the flow cell. The minicomputer continuously scans the interferometer for continuous refractive index readings and outputs the continuous results of the scans on a chart recorder. The absorption of the specimen can concurrently be scanned by including a second optical path for an excitation laser which will not interfere with the first laser, but will affect the specimen so that absorption properties can be detected. By first scanning for the refractive index of the specimen, and then immediately adding the excitation laser and subsequently scanning for the refractive index again, the absorption of the specimen can be computed and recorded. 10 figs.

  13. Fluorescence-based video profile beam diagnostics: Theory and experience

    SciTech Connect (OSTI)

    Sandoval, D.; Gilpatrick, D.; Shinas, M.; Garcia, R.; Yuan, V.; Zander, M.

    1994-05-01

    Inelastic collisions between accelerated particles and residual gas in the accelerator vessel can cause the residual gas to fluoresce. The gas fluorescence intensity is proportional to the current density of the particle beam. This process provides the foundation for a video diagnostic system to measure the profile and position of accelerated particle beams. This, in fact, has proven to be a useful diagnostic at several installations. This paper describes the light production process resulting from beam -- residual gas interactions and gives formulas for estimating the beam radiance for various conditions. Ground Test Accelerator (GTA) radiance calculations will be used as an example. In addition, measurement experiences with the GTA video diagnostics system will be discussed.

  14. Fluorescence-based video profile beam diagnostics: Theory and experience

    SciTech Connect (OSTI)

    Sandoval, D.P.; Garcia, R.C.; Gilpatrick, J.D.; Shinas, M.A.; Wright, R.; Yuan, V.; Zander, M.E. )

    1994-10-10

    Inelastic collisions between accelerated particles and residual gas in the accelerator vessel can cause the residual gas to fluoresce. The gas fluorescence intensity is proportional to the current density of the particle beam. This process provides the foundation for a video diagnostics system to measure the profile and position of accelerated particle beams. This, in fact, has proven to be a useful diagnostic at several installations. This paper describes the light production process resulting from beam-residual gas interactions and gives formulas for estimating the beam radiance for various conditions. Ground Test Accelerator (GTA) radiance calculations will be used as an example. In addition, measurement experiences with the GTA video diagnostics system will be discussed.

  15. Geometric Modeling, Radiation Simulation, Rendering, Analysis Package

    Energy Science and Technology Software Center (OSTI)

    1995-01-17

    RADIANCE is intended to aid lighting designers and architects by predicting the light levels and appearance of a space prior to construction. The package includes programs for modeling and translating scene geometry, luminaire data and material properties, all of which are needed as input to the simulation. The lighting simulation itself uses ray tracing techniques to compute radiance values (ie. the quantity of light passing through a specific point in a specific direction), which aremore » typically arranged to form a photographic quality image. The resulting image may be analyzed, displayed and manipulated within the package, and converted to other popular image file formats for export to other packages, facilitating the production of hard copy output.« less

  16. Section 11

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

    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

  17. Building Energy Modeling Sub-Program Logic Model

    Energy Savers [EERE]

    Test, validate, characterize & improve BEM engine accuracy. Increase use of BEM & DOE tools via market partnerships. Direct support for BTO apps, e.g., HES, Asset Score & Scout analysis tool. Direct & shared funding to enhance, support & maintain E+, OS & RD Enhance, maintain & support open- source BEM tools EnergyPlus (E+), OpenStudio. (OS) & Radiance (RD) Increased use of BEM (esp. E+ & OS-based tools) by utilities develop & administer programs Increased

  18. ARM - Facility News Article

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

    Sunphotometer Re-installed at North Slope of Alaska Bookmark and Share The CIMEL sunphotometer takes sky radiance measurements during daylight hours, when the sun is above horizon. In early May, a CIMEL sunphotometer owned by the National Aeronautics and Space Administration (NASA) was re-installed at Barrow, Alaska, one of two research sites that make up the ARM Climate Research Facility's North Slope of Alaska (NSA) locale. The CIMEL is a multi-channel, automatic sun-and-sky scanning

  19. Research Highlight

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

    Trends in Downwelling Longwave Radiation over SGP Download a printable PDF Submitter: Gero, J., University of Wisconsin Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle, Cloud-Aerosol-Precipitation Interactions Journal Reference: Gero P and DD Turner. 2011. "Long-term trends in downwelling spectral infrared radiance over the U.S. Southern Great Plains." Journal of Climate, 24(18),

  20. Research Highlight

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

    "Radiance Assimilation" Correction Method Improves Water Vapor Radiosonde Observations in the Upper Troposphere Submitter: Soden, B. J., University of Miami Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Modeling Journal Reference: Soden, B.J., D.D. Turner, B.M. Lesht, and L.M. Miloshevich (2004), An analysis of satellite, radiosonde, and lidar observations of upper tropospheric water vapor from the Atmospheric Radiation

  1. Research Highlights Sorted by Submission Data

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

    HighlightsSort Form Submit a New Research Highlight Sort Highlights Submitter Title Research Area Working Group Submission Date DOE Progress Reports Notable Research Findings for 2001-2006 Office of Science Abstracts Database Research Highlights Summaries Research Highlights sorted by Submission Data "Invisible" Giants in the Sky ARM ASR Kassianov, E. "Radiance Assimilation" Correction Method Improves Water Vapor Radiosonde Observations in the Upper Troposphere ARM Soden, B.

  2. ARM - Publications: Science Team Meeting Documents: Cloud Property

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

    Retrievals using AIRS data during MPACE Cloud Property Retrievals using AIRS data during MPACE Huang, Allen University of Wisconsin Li, Jun University of Wisconsin-Madison Baggett, Kevin University of Wisconsin-Madison Wu, Xuebao University of Wisconsin-Madison Revercomb, Henry University Of Wisconsin-Madison Tobin, David University of Wisconsin-Madison Knuteson, Robert University Of Wisconsin High spectral resolution infrared radiances collected by AIRS aboard the NASA Aqua satellite are

  3. ARM - Site Instruments

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

    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 Gijs de Boer, Principal Investigator Instruments : Oliktok Point, Alaska Active Retired Active instruments are currently deployed at fixed or mobile facilities or are available through the ARM Aerial Facility. AERI Atmospheric Emitted Radiance

  4. ARM - Facility News Article

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

    Sunphotometer to Obtain Additional Aerosol Data in Niamey Bookmark and Share Located nearby the AMF ground instruments, the sunphotometer, in the foreground, requires an unobstructed hemispheric view of the sky to obtain its measurements. In early August, a new Cimel sunphotometer (CSPHOT) was deployed at the ARM Mobile Facility site in Niamey, Niger, as part of the ongoing RADAGAST field campaign. The CSPHOT measures the solar and sky radiance at various wavelengths in the visible and

  5. ARM - Field Campaign - ASSIST: Atmospheric Sounder Spectrometer for

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

    Infrared Spectral Technology govCampaignsASSIST: Atmospheric Sounder Spectrometer for Infrared Spectral Technology 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 Campaign : ASSIST: Atmospheric Sounder Spectrometer for Infrared Spectral Technology 2008.07.08 - 2008.07.18 Lead Scientist : Michael Howard For data sets, see below. Abstract Goals of assist were to intercompare radiance spectra and profile retrievals

  6. ARM - Publications: Science Team Meeting Documents

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

    The Use of the ARM WSI to Estimate the Atmospheric Optical Depth at Night Musat, I.C. and Ellingson, R.G., University of Maryland Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The shortwave extinction by atmospheric constituents can be studied during the night, with the light of stars as a radiation source, using the ARM Whole Sky Imager (WSI). The digital images obtained with the WSI are processed to infer the star radiance at the TOA and the broadband atmospheric

  7. ARM - Publications: Science Team Meeting Documents

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

    A New Flexible and Efficient Radiance Solver For Multi-Layered Media Hopsecger, J.M., Gabriel, P.M., and Stephens, G.L., Colorado State University Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The development of computationally efficient radiative transfer codes has been motivated in part by the requirement of performing the retrievals of atmospheric optical properties in near real-time. The method described in this poster calculates the global reflection and trans-

  8. ARM - Publications: Science Team Meeting Documents

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

    Impacts of Cirrus Contamination on Satellite Retrieved Microphysical Properties of Water Clouds Chang, F.-L. and Li, Z., University of Maryland Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting Due to their ubiquitous presence, cirrus clouds can modify both solar reflected and terrestrial emitted radiances. Detecting the presence of cirrus clouds from satellite imagery data faces two major challenges. Firstly, they often reside in high altitude and overlap with a boundary

  9. Solar Install Mount Production Labor Equipment Simple Balance of Systems |

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

    Department of Energy Install Mount Production Labor Equipment Simple Balance of Systems Solar Install Mount Production Labor Equipment Simple Balance of Systems GA Tech logo.jpg The Georgia Tech Applied Research Corporation (GTARC/GTRI), Radiance Solar, a low cost solar integrator, and Suniva, a US based high efficiency, low cost cell and module manufacturer collaborate to develop a commercially ready, next generation solar PV balance of system design. The objective can be accomplished

  10. EFRC Resources-Resources-PHaSe-EFRC

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

    EFRC Resources EFRC map Last update 30 April 2015. The following links mostly provide information about accessing specialty equipment and the main instrument facilities that were created by PHaSE during 2009-2015. The last three links guide readers to information that is useful to anyone seriously interested in photovoltaics. Photovoltaic & Spectroscopy Facility Specialty Equipment for Electronic Materials Facility User Reservation Site NREL AM1.5 Solar Radiance Standard NREL Solar Cell

  11. turner-98.pdf

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

    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

  12. Deployment of a New Shortwave Spectroradiometer (SWS) at the SGP

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

    Deployment of a New Shortwave Spectroradiometer (SWS) at the SGP Pommier, John NASA Ames Research Center Pilewskie, Peter University of Colorado Gore, Warren NASA Ames Research Center Category: Instruments A new Shortwave Spectroradiometer (SWS) will be deployed at the ARM Southern Great Plains Central Facility in early 2006. The SWS is a moderate resolution sensor which will measure the zenith spectral radiance with 1.4 field-of-view. The SWS is sensitive over the wavelength range from 350 -

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

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

    Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius F.-L Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction Cirrus clouds can largely modify the solar reflected and terrestrial emitted radiances. The ubiquitous presence of cirrus clouds has a global coverage of about 20% to30%

  14. Chiu_ARMSTM_COPS.ppt

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

    Our retrieval method uses zenith radiance measurements at 673, 870, and 1640 nm wavelengths and requires the presence of green vegetation in the surrounding area. * This method works because: 1. At 673 and 870nm, clouds have nearly identical optical properties, but vegetated surfaces reflect quite differently; 2. 1640 nm is a water-absorbing wavelength that contains information about the strength of forwarding scattering and absorption due to various cloud drop sizes. * Using a 1D radiative

  15. Instrillment Development Multi-Spectral Automated Rotating Shadowt)and Radiometry

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

    Instrillment Development Multi-Spectral Automated Rotating Shadowt)and Radiometry L. Harrison Atmospheric: Sciences Research Center State University of New York at Albany Albany, NY 12205 I am developing two related instruments for use in the Atmospheric Radiation Measurement (ARM) p,rogram; both use an automated rotating shadowband technique to make spectrally resolved measurements of the direct-normal, total horizontal, and diffuse horizontal irradiances. These parameters of the sky-radiance

  16. Introducing SAM (Sun and Aureole Measurement), a New, Ground-based

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

    Capability for Measuring Cloud Optical Properties Introducing SAM (Sun and Aureole Measurement), a New, Ground-based Capability for Measuring Cloud Optical Properties DeVore, John Visidyne, Inc. Stair, A Visidyne McClatchey, Robert McClatchey Associates Category: Instruments Visidyne has developed a new, ground-based capability for the remote measurement of cloud and aerosol optical properties. Named SAM, for Sun and Aureole Measurement, this system makes precise measurements of the radiance

  17. ARM - Datastreams - csphotpfn1

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

    Datastreamscsphotpfn1 Documentation Data Quality Plots Citation DOI: 10.5439/1025177 [ 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 : CSPHOTPFN1 Cimel Sunphotometer (CSPHOT): Aerosol phase functions derived from almucantar sky radiances Active Dates 1994.04.12 - 2006.09.27 Measurement Categories Aerosols Originating Instrument Cimel Sunphotometer (CSPHOT) Measurements

  18. ARM - Instruments

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

    Instruments Related Links RHUBC Home NSA Home ARM Data Discovery Browse Data Experiment Planning RHUBC Proposal Abstract Full Proposal (pdf, 420kb) Science Plan (pdf) Operations Plan (pdf, 144kb) Instruments Contacts News ARM Press Release (Feb. 26, 2007) Images flickr_dots Instruments This plot shows the downwelling high-spectral-resolution radiance (top) and transmission (bottom) for three different atmospheres. The U.S. standard atmosphere represents conditions that can be found at many

  19. Considerations for the use of the modified line reversal technique for gas temperature measurement

    SciTech Connect (OSTI)

    Winkleman, B.C.

    1993-06-01

    Several areas related to the successful and accurate application of modified line reversal are discussed. Initially, generalized modified line reversal equations are developed. A review of basic line reversal theory is presented followed by development of correction factors for optical system effects. Image size and their effect on accurate determinations of spectral radiances is discussed. Temperature biases introduced by image vignetting is calculated. Measured image irradiances are given.

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

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

    Microphysical Properties of Single and Mixed-Phase Arctic Clouds Derived from AERI Observations D. D. Turner University of Wisconsin-Madison Madison, Wisconsin and Pacific Northwest National Laboratory Richland, Washington Abstract 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

  1. GMG: A Guaranteed, Efficient Global Optimization Algorithm for Remote Sensing.

    SciTech Connect (OSTI)

    D'Helon, CD

    2004-08-18

    The monocular passive ranging (MPR) problem in remote sensing consists of identifying the precise range of an airborne target (missile, plane, etc.) from its observed radiance. This inverse problem may be set as a global optimization problem (GOP) whereby the difference between the observed and model predicted radiances is minimized over the possible ranges and atmospheric conditions. Using additional information about the error function between the predicted and observed radiances of the target, we developed GMG, a new algorithm to find the Global Minimum with a Guarantee. The new algorithm transforms the original continuous GOP into a discrete search problem, thereby guaranteeing to find the position of the global minimum in a reasonably short time. The algorithm is first applied to the golf course problem, which serves as a litmus test for its performance in the presence of both complete and degraded additional information. GMG is further assessed on a set of standard benchmark functions and then applied to various realizations of the MPR problem.

  2. Aerosol Properties from Multi-spectral and Multi-angular Aircraft 4STAR Observations: Expected Advantages and Challenges

    SciTech Connect (OSTI)

    Kassianov, Evgueni I.; Flynn, Connor J.; Redemann, Jens; Schmid, Beat; Russell, P. B.; Sinyuk, Alexander

    2012-11-01

    The airborne Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR) is developed to retrieve aerosol microphysical and optical properties from multi-angular and multi-spectral measurements of sky radiance and direct-beam sun transmittance. The necessarily compact design of the 4STAR may cause noticeable apparent enhancement of sky radiance at small scattering angles. We assess the sensitivity of expected 4STAR-based aerosol retrieval to such enhancement by applying the operational AERONET retrieval code and constructed synthetic 4STARlike data. Also, we assess the sensitivity of the broadband fluxes and the direct aerosol radiative forcing to uncertainties in aerosol retrievals associated with the sky radiance enhancement. Our sensitivity study results suggest that the 4STARbased aerosol retrieval has limitations in obtaining detailed information on particle size distribution and scattering phase function. However, these limitations have small impact on the retrieved bulk optical parameters, such as the asymmetry factor (up to 4%, or 0.02) and single-scattering albedo (up to 2%, or 0.02), and the calculated direct aerosol radiative forcing (up to 6%, or 2 Wm-2).

  3. Quantum-projection-noise-limited interferometry with coherent atoms in a Ramsey-type setup

    SciTech Connect (OSTI)

    Doering, D.; McDonald, G.; Debs, J. E.; Figl, C.; Altin, P. A.; Bachor, H.-A.; Robins, N. P.; Close, J. D. [Australian Research Council Centre of Excellence for Quantum-Atom Optics, Australian National University, Canberra, 0200 (Australia); Department of Quantum Science, Research School of Physics and Engineering, Australian National University, Canberra, 0200 (Australia)

    2010-04-15

    Every measurement of the population in an uncorrelated ensemble of two-level systems is limited by what is known as the quantum projection noise limit. Here, we present quantum-projection-noise-limited performance of a Ramsey-type interferometer using freely propagating coherent atoms. The experimental setup is based on an electro-optic modulator in an inherently stable Sagnac interferometer, optically coupling the two interfering atomic states via a two-photon Raman transition. Going beyond the quantum projection noise limit requires the use of reduced quantum uncertainty (squeezed) states. The experiment described demonstrates atom interferometry at the fundamental noise level and allows the observation of possible squeezing effects in an atom laser, potentially leading to improved sensitivity in atom interferometers.

  4. Tomographic interferometry of a filtered high-current vacuum arc plasma

    SciTech Connect (OSTI)

    Warr, George B.; Tarrant, Richard N.; Bilek, Marcela M. M.; McKenzie, David R.; Harris, Jeffrey H.; Howard, John; Blackwell, Boyd D.

    2007-04-01

    Tomography of a plasma enables the distribution of electron density to be visualized. We report on the design of two tomographic interferometer systems used to measure plasma electron density distributions in a high-current pulsed cathodic vacuum arc. The method is shown to be capable of microsecond time resolution. The spatial resolution of the quasioptical interferometer operating at 2 mm wavelength is 20 mm and the spatial resolution of the waveguide-based interferometer operating at 8 mm wavelength is 50 mm. In both cases the resolution achieved depends on the launching and receiving geometries. We developed criteria for assessing the tomogram for artifacts arising from limited sampling. First results of the spatial and temporal history of plasma in a high-current vacuum arc guided by a curved magnetic filter are presented and indicate poloidal field fluctuations reminiscent of magnetohydrodynamic instabilities in pinches. The applicability of the tomographic interferometry method to optimize plasma transport through the filter is also demonstrated.

  5. Ultrasonic characterization of single drops of liquids

    DOE Patents [OSTI]

    Sinha, Dipen N. (Los Alamos, NM)

    1998-01-01

    Ultrasonic characterization of single drops of liquids. The present invention includes the use of two closely spaced transducers, or one transducer and a closely spaced reflector plate, to form an interferometer suitable for ultrasonic characterization of droplet-size and smaller samples without the need for a container. The droplet is held between the interferometer elements, whose distance apart may be adjusted, by surface tension. The surfaces of the interferometer elements may be readily cleansed by a stream of solvent followed by purified air when it is desired to change samples. A single drop of liquid is sufficient for high-quality measurement. Examples of samples which may be investigated using the apparatus and method of the present invention include biological specimens (tear drops; blood and other body fluid samples; samples from tumors, tissues, and organs; secretions from tissues and organs; snake and bee venom, etc.) for diagnostic evaluation, samples in forensic investigations, and detection of drugs in small quantities.

  6. Apparatus and method for measuring fluorescence intensities at a plurality of wavelengths and lifetimes

    DOE Patents [OSTI]

    Buican, T.N.

    1993-05-04

    Apparatus and method is described for measuring intensities at a plurality of wavelengths and lifetimes. A source of multiple-wavelength electromagnetic radiation is passed through a first interferometer modulated at a first frequency, the output thereof being directed into a sample to be investigated. The light emitted from the sample as a result of the interaction thereof with the excitation radiation is directed into a second interferometer modulated at a second frequency, and the output detected and analyzed. In this manner excitation, emission, and lifetime information may be obtained for a multiplicity of fluorochromes in the sample.

  7. Apparatus and method for measuring fluorescence intensities at a plurality of wavelengths and lifetimes

    DOE Patents [OSTI]

    Buican, Tudor N. (Albuquerque, NM)

    1993-01-01

    Apparatus and method for measuring intensities at a plurality of wavelengths and lifetimes. A source of multiple-wavelength electromagnetic radiation is passed through a first interferometer modulated at a first frequency, the output thereof being directed into a sample to be investigated. The light emitted from the sample as a result of the interaction thereof with the excitation radiation is directed into a second interferometer modulated at a second frequency, and the output detected and analyzed. In this manner excitation, emission, and lifetime information may be obtained for a multiplicity of fluorochomes in the sample.

  8. Method and apparatus for simultaneously measuring a plurality of spectral wavelengths present in electromagnetic radiation

    DOE Patents [OSTI]

    Buican, Tudor N. (Los Alamos, NM); Martin, John C. (Los Alamos, NM)

    1990-01-01

    An apparatus and method simultaneously measures a plurality of spectral wavelengths present in electromagnetic radiation. A modulatable birefringent optical element is employed to divide a polarized light beam into two components, thereby producing a phase difference in two resulting light beams such that the two beams can be made to interfere with one another when recombined, the interference pattern providing the wavelength information required for the analysis of the incident light. The interferometer thus created performs in a similar manner to a Michelson interferometer, but with no moving parts, and with a resolution dependent on the degree of phase shift introduced by the modulator.

  9. Fused off-axis object illumination direct-to-digital holography with a plurality of illumination sources

    DOE Patents [OSTI]

    Price, Jeffery R.; Bingham, Philip R.

    2005-11-08

    Systems and methods are described for rapid acquisition of fused off-axis illumination direct-to-digital holography. A method of recording a plurality of off-axis object illuminated spatially heterodyne holograms, each of the off-axis object illuminated spatially heterodyne holograms including spatially heterodyne fringes for Fourier analysis, includes digitally recording, with a first illumination source of an interferometer, a first off-axis object illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; and digitally recording, with a second illumination source of the interferometer, a second off-axis object illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis.

  10. Calibration of fluorescence resonance energy transfer in microscopy

    DOE Patents [OSTI]

    Youvan, Douglas C. (San Jose, CA); Silva, Christopher M. (Sunnyvale, CA); Bylina, Edward J. (San Jose, CA); Coleman, William J. (Moutain View, CA); Dilworth, Michael R. (Santa Cruz, CA); Yang, Mary M. (San Jose, CA)

    2002-09-24

    Imaging hardware, software, calibrants, and methods are provided to visualize and quantitate the amount of Fluorescence Resonance Energy Transfer (FRET) occurring between donor and acceptor molecules in epifluorescence microscopy. The MicroFRET system compensates for overlap among donor, acceptor, and FRET spectra using well characterized fluorescent beads as standards in conjunction with radiometrically calibrated image processing techniques. The MicroFRET system also provides precisely machined epifluorescence cubes to maintain proper image registration as the sample is illuminated at the donor and acceptor excitation wavelengths. Algorithms are described that pseudocolor the image to display pixels exhibiting radiometrically-corrected fluorescence emission from the donor (blue), the acceptor (green) and FRET (red). The method is demonstrated on samples exhibiting FRET between genetically engineered derivatives of the Green Fluorescent Protein (GFP) bound to the surface of Ni chelating beads by histidine-tags.

  11. Calibration of fluorescence resonance energy transfer in microscopy

    DOE Patents [OSTI]

    Youvan, Dougalas C.; Silva, Christopher M.; Bylina, Edward J.; Coleman, William J.; Dilworth, Michael R.; Yang, Mary M.

    2003-12-09

    Imaging hardware, software, calibrants, and methods are provided to visualize and quantitate the amount of Fluorescence Resonance Energy Transfer (FRET) occurring between donor and acceptor molecules in epifluorescence microscopy. The MicroFRET system compensates for overlap among donor, acceptor, and FRET spectra using well characterized fluorescent beads as standards in conjunction with radiometrically calibrated image processing techniques. The MicroFRET system also provides precisely machined epifluorescence cubes to maintain proper image registration as the sample is illuminated at the donor and acceptor excitation wavelengths. Algorithms are described that pseudocolor the image to display pixels exhibiting radiometrically-corrected fluorescence emission from the donor (blue), the acceptor (green) and FRET (red). The method is demonstrated on samples exhibiting FRET between genetically engineered derivatives of the Green Fluorescent Protein (GFP) bound to the surface of Ni chelating beads by histidine-tags.

  12. Uncertainty Estimates for SIRS, SKYRAD, & GNDRAD Data and Reprocessing the Pyrgeometer Data (Presentation)

    SciTech Connect (OSTI)

    Reda, I.; Stoffel, T.; Habte, A.

    2014-03-01

    The National Renewable Energy Laboratory (NREL) and the Atmospheric Radiation Measurement (ARM) Climate Research Facility work together in providing data from strategically located in situ measurement observatories around the world. Both work together in improving and developing new technologies that assist in acquiring high quality radiometric data. In this presentation we summarize the uncertainty estimates of the ARM data collected at the ARM Solar Infrared Radiation Station (SIRS), Sky Radiometers on Stand for Downwelling Radiation (SKYRAD), and Ground Radiometers on Stand for Upwelling Radiation (GNDRAD), which ultimately improve the existing radiometric data. Three studies are also included to show the difference between calibrating pyrgeometers (e.g., Eppley PIR) using the manufacturer blackbody versus the interim World Infrared Standard Group (WISG), a pyrgeometer aging study, and the sampling rate effect of correcting historical data.

  13. ARM - Blog Article

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

    SGP] All About the Pyrheliometers: 12th Annual IPC Conference Bookmark and Share Editor's Note: Craig Webb, calibration technician at the Southern Great Plains site, sent this update. Data quality of the measurements from radiometers requires accurate and regular recalibration traceable to the World Radiometric Reference, the international standard of solar radiation measurement. Data quality of the measurements from radiometers requires accurate and regular recalibration traceable to the World

  14. ARM - Site Instruments

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

    Boundary FacilityInstruments SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Boundary Facilities Active Retired Active instruments are currently deployed at fixed or mobile facilities or are available

  15. ARM - Site Instruments

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

    Central FacilityInstruments SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Central Facility Active Retired Active instruments are currently deployed at fixed or mobile facilities or are available

  16. ARM - Site Instruments

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

    Extended FacilityInstruments SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Extended Facilities Active Retired Active instruments are currently deployed at fixed or mobile facilities or are available

  17. ARM - Field Campaign - Microwave Radiometer Profiler Evaluation

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

    govCampaignsMicrowave Radiometer Profiler Evaluation 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 Campaign : Microwave Radiometer Profiler Evaluation 2000.09.01 - 2001.03.31 Lead Scientist : James Liljegren For data sets, see below. Abstract The microwave radiometer profiler (MWRP) is a new 12-channel radiometer developed by Radiometrics Corporation for measuring vertical profiles of temperature, water vapor, and

  18. ARM - Publications: Science Team Meeting Documents

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

    Maintaining Radiometer Calibration Traceability to the World Radiometric Reference: Results of the NREL Pyrheliometer Comparisons in 2001 Stoffel, T.L. and Reda, I., National Renewable Energy Laboratory Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Accurate measurements of solar irradiance place many demands on the operators of commercially available radiometers. Maintaining careful instrument calibrations traceable to an international standard is the first step in

  19. ARM - Publications: Science Team Meeting Documents

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

    NREL Pyrheliometer Comparisons - 2002 Reda, I. and Stoffel, T.L., National Renewable Energy Laboratory Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting All broadband shortwave radiometers used by the ARM Program are calibrated with absolute cavity radiometers traceable to the World Radiometric Reference (WRR). The WRR was developed and is maintained by the World Radiation Center under the auspices of the World Meteorological Organization. Each fall, the National Renewable

  20. SGP Central Facility

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

    Central Facility SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Central Facility The ARM Climate Research Facility deploys specialized remote sensing instruments in a fixed location at the site to gather

  1. halthore(3)-99.PDF

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

    Sun and Sky Radiometric Measurements at the CART ARM SGP Site R. N. Halthore, S. E. Schwartz, Y. Liu, and P. H. Daum Brookhaven National Laboratory Upton, New York B. N. Holben National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland J. J. Michalsky State University of New York Albany, New York Abstract Cimel sunphotometers/radiometers (CSPHOT) are facility instruments at the three Atmospheric Radiation Measurement (ARM) sites at the Southern Great Plains

  2. han-99.PDF

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

    Tip Cal Methods for Ground-Based Microwave Radiometric Sensing of Water Vapor and Clouds Y. Han and E. R. Westwater CIRES, University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado Introduction Ground-based Microwave Radiometers (MWRs) have been widely used to measure atmospheric water vapor and cloud liquid water. Frequencies on the 22.235-GHz water vapor absorption band and in the 31-GHz absorption window region are commonly

  3. lazarus-98.pdf

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

    3 A Cloud Climatology of the ARM CART Site S. M. Lazarus, S. K. Krueger, and G. G. Mace University of Utah Salt Lake City, Utah Introduction The Atmospheric Radiation and Measurement (ARM) Pro- gram (Stokes and Schwartz 1994) Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) is host to a bevy of radiometric and cloud observing instruments dedi- cated to assisting ARM in reaching its objective to develop and improve cloud and radiative parameterizations for use in general circulation

  4. mitchell(1)-98.pdf

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

    9 Testing a Cirrus Radiation Scheme with In Situ Microphysical and Radiometric Measurements from a Tropical Cirrus Anvil D. L. Mitchell and D. Ivanova Atmospheric Sciences Center Desert Research Institute Reno, Nevada G. M. McFarquhar National Center for Atmospheric Research Boulder, Colorado A. Macke Universitaet zu Kiel Kiel, Germany Experimental Design and Objective The only successful microphysics/radiation experiment to date in tropical anvil cirrus was the 4 April 1993 mission during the

  5. westwater-99.PDF

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

    Multi-Frequency Scanning Microwave Radiometer for Temperature Profiling E. R. Westwater and Y. Han CIRES University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado F. Solheim Radiometrics Corporation Boulder, Colorado Introduction In surface-based experiments in central Oklahoma and at a 300-m meteorological tower near Erie, Colorado (Westwater et al. 1999), angular-scanning single-frequency radiometer have shown potential for

  6. ARM - SGP Extended Facility

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

    Extended Facility SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Extended Facility For over 20 years, 23 extended facilities were distributed evenly throughout a 55,000-square-mile domain and at the corners of

  7. ARM - SGP Intermediate Facility

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

    Intermediate Facility SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Intermediate Facility For over 20 years, 3 intermediate facilities, within 6.2 miles (10 km) of the Central Facility, provided a

  8. ARM - SGP Rural Driving Hazards

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

    Rural Driving Hazards SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Rural Driving Hazards The rural location of the Southern Great Plains (SGP) site facilities requires that visitors travel on unpaved, dirt

  9. ARM - SGP Science

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

    Science SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Science Overall Objectives The primary goal of the Southern Great Plains (SGP) site is to produce data adequate to support significant research addressing

  10. ARM - Site Instruments

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

    PlainsInstruments SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Southern Great Plains Active Retired Active instruments are currently deployed at fixed or mobile facilities or are available through

  11. ARM - VAP Process - aeriprof

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

    Productsaeriprof Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : AERI Profiles of Water Vapor and Temperature (AERIPROF) Instrument Categories Derived Quantities and Models, Radiometric AERI profiles of water vapor and temperature are retrieved about every 8 minutes and supplement other methods of determining the structure

  12. ARM - VAP Process - armbe2dgrid

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

    Productsarmbe2dgrid Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : 2D Gridded Surface Data Set (ARMBE2DGRID) Instrument Categories Cloud Properties, Radiometric, Satellite Observations, Surface Meteorology, Surface/Subsurface Properties Surface air relative humidity is shown in percent from the ARMBE2DGRID data product on

  13. ARM - VAP Process - armbestns

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

    Productsarmbestns Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : Station-based Surface Products (ARMBESTNS) Instrument Categories Cloud Properties, Radiometric, Surface Meteorology Surface pressure is shown in hPa from different SGP surface meteorological sites (color-coded) from ARMBESTNS data set for the Midlatitude

  14. ARM - VAP Process - beflux

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

    Productsbeflux Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : Best-Estimate Radiative Flux (BEFLUX) Instrument Categories Radiometric The Best-Estimate Surface Radiative Flux (BEFLUX) VAP processes data from three Southern Great Plains Central Facility radiometer systems when all are available. Before 2001, this VAP used

  15. ARM - VAP Process - gvrpwv

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

    Productsgvrpwv Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : G-Band Vapor Radiometer Precipitable Water Vapor (GVRPWV) Instrument Categories Radiometric The G-Band Vapor Radiometer Precipitable Water Vapor (GVRPWV) value-added product (VAP) computes precipitable water vapor using neural network techniques from data

  16. ARM - VAP Process - mfrsrcldod

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

    Productsmfrsrcldod Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : Cloud Optical Properties from MFRSR Using Min Algorithm (MFRSRCLDOD) Instrument Categories Aerosols, Radiometric The mfrsrcldod1min value-added product produces cloud optical depth for overcast liquid clouds using narrowband irradiance measurements from the

  17. ARM - VAP Process - mwrret

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

    Productsmwrret Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : MWR Retrievals (MWRRET) Instrument Categories Atmospheric Profiling, Cloud Properties, Derived Quantities and Models, Radiometric Image - sample data plot There are 2-channel (23.8 and 31.4GHz) microwave radiometers (MWRs) deployed at each ARM Climate Research

  18. ARM - VAP Process - qmelwflux

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

    Productsqmelwflux Documentation & Plots Data Management Facility Plots (Quick Looks) 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 : Comparison of Longwave Flux Data from AERI and LBLRTM vs. pyrgeometer (QMELWFLUX) Instrument Categories Derived Quantities and Models, Radiometric Locations Southern Great Plains SGP C1 Browse Data Central Facility, Lamont, OK retired retired = Originating instrument has been

  19. ARM - VAP Process - ripbe

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

    Productsripbe Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : Radiatively Important Parameters Best Estimate (RIPBE) Instrument Categories Aerosols, Cloud Properties, Radiometric Quicklook plot showing RIPBE liquid cloud effective radius (top) and quality control flags (bottom). For the first half of the day, no cloud data

  20. ARM - VAP Process - sirosopdepth

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

    Productssirosopdepth Documentation & Plots Data Management Facility Plots (Quick Looks) 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 : Optical Depth from SIROS instruments (SIROSOPDEPTH) Note:sirosopdepth is currently inactive and/or retired. Active Dates 2015.01.09 - 2015.02.12 Instrument Categories Radiometric

  1. ARM - VAP Process - swfluxanal

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

    Productsswfluxanal Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) 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 : Shortwave Flux Analysis (SWFLUXANAL) Instrument Categories Cloud Properties, Radiometric The SW (shortwave) Flux Analysis VAP applies a clear-sky detection and fitting technique (Long and Ackerman 2000) to data from broadband SW radiometers located at the

  2. ARM - Visiting the SGP

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

    PlainsVisiting the SGP SGP Related Links Virtual Tour 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 SGP Fact Sheet Images Information for Guest Scientists Contacts Visiting the SGP View a custom Google map with driving directions to the SGP Central Facility. View a custom Google map with driving directions

  3. Instrument Development Tethered Balloon Sounding System for Vertical Radiation Profiles

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

    Tethered Balloon Sounding System for Vertical Radiation Profiles C. D. Whiteman J. M. Alzheimer G. A. Anderson M. R. Garnich W. J. Shaw Pacific Northwest Laboratory Richland, WA 99352 platform is built on a triangular frame identical to the one on the Sky Platform, but the MSP carries no radiometric sensors, control loop, or leveling motors. Rather. the MSP is instrumented to measure the motions to which the Sky Platform will be subjected; the data provide engineering information to be used in

  4. ARM - Datastreams - csphotpp

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

    Datastreamscsphotpp Documentation Data Quality Plots Citation DOI: 10.5439/1025178 [ 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 : CSPHOTPP Cimel Sunphotometer (CSPHOT): principal planes data Active Dates 1994.04.07 - 2016.02.29 Measurement Categories Radiometric Originating Instrument Cimel Sunphotometer (CSPHOT) Measurements Only measurements considered

  5. ARM - Datastreams - ecmwfflx

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

    Datastreamsecmwfflx 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 : ECMWFFLX ECMWF: radiative fluxes at altitude, 1-hr avg, entire coverage Active Dates 1995.04.17 - 2016.02.29 Measurement Categories Radiometric Originating Instrument European Centre for Medium Range Weather Forecasts Diagnostic Analyses (ECMWFDIAG) Description These data can only be

  6. ARM - Datastreams - ecmwfsfc

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

    Datastreamsecmwfsfc 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 : ECMWFSFC ECMWF: surface variables and fluxes, entire coverage, 1-hr avg Active Dates 1996.08.01 - 2000.09.12 Measurement Categories Atmospheric State, Radiometric, Surface Properties Originating Instrument European Centre for Medium Range Weather Forecasts Diagnostic Analyses

  7. ARM - Datastreams - ecmwfsfc1l

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

    Datastreamsecmwfsfc1l 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 : ECMWFSFC1L ECMWF: surface variables and fluxes, single layer, 1-hr avg Active Dates 2000.09.13 - 2016.02.29 Measurement Categories Atmospheric State, Radiometric, Surface Properties Originating Instrument European Centre for Medium Range Weather Forecasts Diagnostic Analyses

  8. ARM - Datastreams - ecmwfsfce

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

    Datastreamsecmwfsfce 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 : ECMWFSFCE ECMWF: near-surface and surface variables (extra), entire coverage, 1-hr avg Active Dates 1998.01.01 - 2016.02.29 Measurement Categories Atmospheric State, Radiometric, Surface Properties Originating Instrument European Centre for Medium Range Weather Forecasts Diagnostic

  9. ARM - Datastreams - ecmwfsupp

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

    Datastreamsecmwfsupp 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 : ECMWFSUPP ECMWF: supplemental data, entire coverage Active Dates 1996.10.01 - 2015.09.30 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument European Centre for Medium Range Weather Forecasts Model Data (ECMWF) Description

  10. ARM - Datastreams - ecmwfsurf

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

    Datastreamsecmwfsurf 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 : ECMWFSURF ECMWF: surface measurement, entire coverage Active Dates 1996.10.01 - 2015.09.30 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument European Centre for Medium Range Weather Forecasts Model Data (ECMWF)

  11. ARM - Datastreams - fslruc60

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

    Datastreamsfslruc60 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 : FSLRUC60 Rapid Update Cycle (RUC) model: FSL output, 60 km resolution Active Dates 1994.10.24 - 1994.11.16 Measurement Categories Atmospheric State, Radiometric, Surface Properties Originating Instrument Rapid Update Cycle Model Data (RUC) Measurements The measurements below provided by

  12. ARM - Datastreams - fullavhrr10ch2

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

    ch2 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 : FULLAVHRR10CH2 AVHRR: NOAA-10 Satellite, full channel 2 Active Dates 1997.11.09 - 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

  13. ARM - Datastreams - fullavhrr10ch4

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

    ch4 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 : FULLAVHRR10CH4 AVHRR: NOAA-10 Satellite, full channel 4 Active Dates 1997.11.09 - 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

  14. ARM - Datastreams - fullavhrr11ch2

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

    ch2 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 : FULLAVHRR11CH2 AVHRR: NOAA-11 Satellite, full channel 2 Active Dates 1998.03.14 - 2000.08.09 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  15. ARM - Datastreams - fullavhrr11ch4

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

    ch4 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 : FULLAVHRR11CH4 AVHRR: NOAA-11 Satellite, full channel 4 Active Dates 1998.03.14 - 2000.08.09 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  16. ARM - Datastreams - fullavhrr12ch2

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

    ch2 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 : FULLAVHRR12CH2 AVHRR: NOAA-12 Satellite, full channel 2 Active Dates 1997.09.25 - 2006.01.06 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  17. ARM - Datastreams - fullavhrr12ch4

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

    ch4 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 : FULLAVHRR12CH4 AVHRR: NOAA-12 Satellite, full channel 4 Active Dates 1997.09.25 - 2006.01.06 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  18. ARM - Datastreams - fullavhrr14ch2

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

    ch2 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 : FULLAVHRR14CH2 AVHRR: NOAA-14 Satellite, full channel 2 Active Dates 1997.09.25 - 2005.04.08 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  19. ARM - Datastreams - fullavhrr14ch4

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

    ch4 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 : FULLAVHRR14CH4 AVHRR: NOAA-14 Satellite, full channel 4 Active Dates 1997.09.25 - 2005.04.08 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  20. ARM - Datastreams - fullavhrr15ch2

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

    ch2 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 : FULLAVHRR15CH2 AVHRR: NOAA-15 Satellite, full channel 2 Active Dates 1998.11.10 - 2005.04.14 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  1. ARM - Datastreams - fullavhrr15ch4

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

    ch4 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 : FULLAVHRR15CH4 AVHRR: NOAA-15 Satellite, full channel 4 Active Dates 1998.11.10 - 2005.04.14 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  2. ARM - Datastreams - fullavhrr16ch2

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

    ch2 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 : FULLAVHRR16CH2 AVHRR: NOAA-16 Satellite, full channel 2 Active Dates 2003.03.06 - 2005.04.13 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  3. ARM - Datastreams - fullavhrr16ch4

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

    ch4 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 : FULLAVHRR16CH4 AVHRR: NOAA-16 Satellite, full channel 4 Active Dates 2003.03.06 - 2005.04.13 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  4. ARM - Datastreams - fullavhrr17ch2

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

    ch2 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 : FULLAVHRR17CH2 AVHRR: NOAA-17 Satellite, full channel 2 Active Dates 2003.03.06 - 2005.04.14 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  5. ARM - Datastreams - fullavhrr17ch4

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

    ch4 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 : FULLAVHRR17CH4 AVHRR: NOAA-17 Satellite, full channel 4 Active Dates 2003.03.06 - 2005.04.14 Measurement Categories Radiometric Originating Instrument Advanced Very High Resolution Radiometer (AVHRR) Measurements The measurements below provided by this product are those considered scientifically

  6. ARM - Datastreams - goes10

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 : GOES10 GOES-10: channels 1-5 Active Dates 2007.12.06 - 2007.12.11 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement

  7. ARM - Datastreams - goes10vis

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

    vis 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 : GOES10VIS GOES-10: visible channel Active Dates 2007.12.06 - 2007.12.10 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant.

  8. ARM - Datastreams - goes12

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 : GOES12 GOES-12: channels 1-5 Active Dates 2003.03.30 - 2010.04.14 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement

  9. ARM - Datastreams - goes12vis

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

    vis 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 : GOES12VIS GOES-12: visible channel Active Dates 2003.03.30 - 2010.04.14 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant.

  10. ARM - Datastreams - goes13

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 : GOES13 GOES-13: channels 1-5 Active Dates 2008.12.15 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement

  11. ARM - Datastreams - goes13vis

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

    vis 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 : GOES13VIS GOES-13: visible channel Active Dates 2008.12.15 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant.

  12. ARM - Datastreams - goes14

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 : GOES14 GOES-14: channels 1-5 Active Dates 2012.09.24 - 2013.06.11 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement

  13. ARM - Datastreams - goes14vis

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

    vis 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 : GOES14VIS GOES-14: visible channel Active Dates 2012.09.24 - 2013.06.11 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant.

  14. ARM - Datastreams - goes8

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 : GOES8 GOES-8: channels 1-5 Active Dates 1994.12.15 - 2003.04.01 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement

  15. ARM - Datastreams - goes8vis

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

    vis 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 : GOES8VIS GOES-8: visible channel Active Dates 1995.02.10 - 2003.04.01 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are those considered scientifically relevant.

  16. ARM - Datastreams - goes9

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

    Datastreamsgoes9 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 : GOES9 Satellite images covering longitude: 90E, 200E,latitude: 30S, 30N. Active Dates 2003.05.12 - 2005.07.15 Measurement Categories Radiometric Originating Instrument Geostationary Operational Environmental Satellites (GOES) Measurements The measurements below provided by this product are

  17. ARM - Datastreams - gvr

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

    Datastreamsgvr Documentation Data Quality Plots Citation DOI: 10.5439/1095594 [ 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 : GVR G-band (183 GHz) Vapor Radiometer Active Dates 2006.09.28 - 2016.03.10 Measurement Categories Atmospheric State, Radiometric Originating Instrument G-band (183 GHz) Vapor Radiometer (GVR) Measurements Only measurements considered

  18. ARM - Datastreams - iapmfr

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

    Datastreamsiapmfr Documentation Data Quality Plots Citation DOI: 10.5439/1140225 [ 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 : IAPMFR In-situ Aerosol Profiles MultiFilter Radiometer (Cessna Aerosol Flights) Active Dates 2007.08.08 - 2016.03.13 Measurement Categories Radiometric Originating Instrument In-situ Aerosol Profiles (Cessna Aerosol Flights) (IAP)

  19. ARM - Datastreams - irt

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

    Datastreamsirt Documentation Data Quality Plots Citation DOI: 10.5439/1025202 [ 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 Example irt Archive Data Plot Example irt Archive Data Plot Datastream : IRT Infrared Thermometer: Sky brightness temperature Active Dates 2001.02.22 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Infrared Thermometer (IRT)

  20. ARM - Datastreams - irt200ms

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

    00ms Documentation Data Quality Plots Citation DOI: 10.5439/1025204 [ 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 : IRT200MS Infrared Thermometer: Sky brightness temperature, 5-Hz instantaneous Active Dates 2005.05.26 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Infrared Thermometer (IRT) Measurements Only measurements considered

  1. ARM - Datastreams - irt2s

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

    s Documentation Data Quality Plots Citation DOI: 10.5439/1025207 [ 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 : IRT2S Infrared Thermometer: Sky brightness temperature, instantaneous 2-second Active Dates 2003.02.19 - 2009.12.21 Measurement Categories Radiometric Originating Instrument Infrared Thermometer (IRT) Measurements Only measurements considered scientifically

  2. ARM - Datastreams - mfraaf

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

    Datastreamsmfraaf 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 : MFRAAF MFR data collected from the underside of an airplane wing Active Dates 2015.05.07 - 2015.10.13 Measurement Categories Radiometric Originating Instrument Multifilter Radiometer (MFR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements

  3. ARM - Datastreams - mfrsr

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

    Datastreamsmfrsr Documentation Data Quality Plots Citation DOI: 10.5439/1023898 [ 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 Example mfrsr Archive Data Plot Example mfrsr Archive Data Plot Datastream : MFRSR Multi-Filter Rotating Shadowband Radiometer (MFRSR): irradiances Active Dates 1996.10.21 - 2016.03.11 Measurement Categories Radiometric Originating Instrument Multifilter

  4. ARM - Datastreams - moltsedassfcclass0

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

    Datastreamsmoltsedassfcclass0 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 : MOLTSEDASSFCCLASS0 Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., basic surface, params, stations Active Dates 1997.06.01 - 1999.09.27 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Model Output

  5. ARM - Datastreams - moltsedassfcclass1

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

    Datastreamsmoltsedassfcclass1 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 : MOLTSEDASSFCCLASS1 Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., enhanced surface, params, stations Active Dates 1997.06.01 - 2013.07.31 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Model Output

  6. ARM - Datastreams - moltsedassndclass1

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

    Datastreamsmoltsedassndclass1 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 : MOLTSEDASSNDCLASS1 Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., enhances soundings, params, stations Active Dates 1997.06.01 - 2013.07.31 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Model

  7. ARM - Datastreams - mtsat

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

    Datastreamsmtsat 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 : MTSAT Multi-functional Transport Satellite (MTSAT) Active Dates 2005.07.14 - 2015.12.04 Measurement Categories Radiometric Originating Instrument Multi-Functional Transport Satellite (MTSAT) Measurements The measurements below provided by this product are those considered scientifically

  8. ARM - Datastreams - mwrhf

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

    Datastreamsmwrhf Documentation Data Quality Plots Citation DOI: 10.5439/1025250 [ 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 : MWRHF Microwave Radiometer: High Frequency (MWRHF) Active Dates 2006.11.03 - 2015.03.15 Measurement Categories Atmospheric State, Radiometric Originating Instrument Microwave Radiometer - High Frequency (MWRHF) Measurements Only measurements

  9. ARM - Datastreams - ncepgfsatkflx

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

    Datastreamsncepgfsatkflx 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 : NCEPGFSATKFLX NCEP GFS: flux variables at Atqasuk Active Dates 2004.12.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS)

  10. ARM - Datastreams - ncepgfsbrwflx

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

    Datastreamsncepgfsbrwflx 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 : NCEPGFSBRWFLX NCEP GFS: flux variables at Barrow Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS)

  11. ARM - Datastreams - ncepgfsflx

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

    Datastreamsncepgfsflx 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 : NCEPGFSFLX NCEP GFS: flux variables Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS) Measurements The

  12. ARM - Datastreams - ncepgfsmanflx

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

    Datastreamsncepgfsmanflx 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 : NCEPGFSMANFLX NCEP GFS: flux variables at Manus Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS)

  13. ARM - Datastreams - ncepgfsnauflx

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

    Datastreamsncepgfsnauflx 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 : NCEPGFSNAUFLX NCEP GFS: surface variables at Nauru Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS)

  14. ARM - Datastreams - nimfr

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

    Datastreamsnimfr Documentation Data Quality Plots Citation DOI: 10.5439/1025258 [ 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 Example nimfr Archive Data Plot Example nimfr Archive Data Plot Datastream : NIMFR Normal Incidence Multi-Filter Radiometer (NIMFR): direct normal irradiances Active Dates 1997.10.16 - 2015.11.06 Measurement Categories Radiometric Originating Instrument

  15. ARM - Datastreams - noaaradbrw

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

    Datastreamsnoaaradbrw 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 : NOAARADBRW High resolution surface radiation data in netcdf format from Barrow Active Dates 1993.07.01 - 2016.03.04 Measurement Categories Radiometric Originating Instrument NOAA/ESRL/GMD Radiometers (NOAARAD) Measurements The measurements below provided by this product are those

  16. ARM - Datastreams - prpfrsr

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

    Datastreamsprpfrsr Documentation Data Quality Plots Citation DOI: 10.5439/1150254 [ 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 : PRPFRSR Portable Radiation Package: Fast Rotating Shadowband Radiometer Active Dates 2012.11.02 - 2015.02.11 Measurement Categories Radiometric Originating Instrument Portable Radiation Package (PRP) Measurements Only measurements

  17. ARM - Datastreams - prprad

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

    Datastreamsprprad Documentation Data Quality Plots Citation DOI: 10.5439/1150256 [ 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 : PRPRAD Portable Radiation Package: Broadband Radiometers Active Dates 2012.11.02 - 2015.02.11 Measurement Categories Radiometric Originating Instrument Portable Radiation Package (PRP) Measurements Only measurements considered scientifically

  18. ARM - Datastreams - rad

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

    Datastreamsrad Documentation Data Quality Plots Citation DOI: 10.5439/1150258 [ 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 : RAD Radiation measurements at AMF/Niamey, Niger/S1 Active Dates 2006.01.13 - 2008.12.13 Measurement Categories Radiometric Originating Instrument Radiation Measurements at AMF (RAD) Measurements Only measurements considered scientifically

  19. ARM - Datastreams - rss

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

    Datastreamsrss Documentation Data Quality Plots Citation DOI: 10.5439/1025267 [ 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 : RSS Rotating Shadowband Spectroradiometer Active Dates 2003.05.10 - 2007.12.05 Measurement Categories Radiometric Originating Instrument Rotating Shadowband Spectroradiometer (RSS) Measurements The measurements below provided by this product

  20. ARM - Datastreams - ruc20hybr

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

    hybr Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : RUC20HYBR Rapid Update Cycle (RUC) model: daily hybrid analysis data, 20 km resolution Active Dates 2002.04.18 - 2012.05.01 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument Rapid Update Cycle Model Data (RUC) Measurements The