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  • 1
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    NOAA-20 ATMS Status: ATMS SDR Team (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: Data quality looks better than Suomi-NPP (Suomi National Polar-orbiting Partnership): similar biases. Smaller standard deviation of first guess departures and diagnosed observation errors. Weaker striping signal than Suomi-NPP ATMS (Advanced Technology Microwave Sounder). Improved first guess fits to: temperature observations (AMSU-A (Advanced Microwave Sounding Unit-A), CrIS (Cross-track Infrared Sounder), GPSRO (Global Positioning System Radio Occultation)); Humidity observations (MHS (Microwave Humidity Sounder), GEO CSRs (Geostationary Orbit Clear Sky Radiances)). Indicates improved accuracy of short range temperature and humidity forecasts. Neutral to slightly positive forecast scores.
    Keywords: Meteorology and Climatology
    Type: GSFC-E-DAA-TN66556 , Annual Meeting Global Space-based Inter-Calibration System (GSICS 2019); Mar 04, 2019 - Mar 08, 2019; Frascati; Italy
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    On-Orbit Special Testing of NOAA-20/JPSS-1 ATMS (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The second Advanced Technology Microwave Sounder (ATMS) recently launched November 2017 on the Joint Polar Satellite System-l satellite (JPSS-l), now re-named NOAA-20. It joins the first ATMS flight unit aboard the Suomi NPP (S-NPP) satellite, as well as older sounders-the Advanced Microwave Sounding Units A & B (AMSU-A/B) and Microwave Humidity Sounder (MHS)-on polar-orbiting operational weather satellites. Together, these sounders provide critical all-weather temperature and humidity profile information for Numerical Weather Prediction (NWP) models. This paper presents results from a number of special post-launch tests used to characterize the instrument and provide unique calibration information. These special tests-long stares, alternate techniques for lunar intrusion mitigation and geolocation, spacecraft maneuvers, special scan modes, comparisons with NWP models-require non-standard modes of operation or data analysis, and can only be conducted during commissioning, prior to the start of regular forecast observations.
    Keywords: Earth Resources and Remote Sensing
    Type: GSFC-E-DAA-TN65647 , IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium; Jul 22, 2018 - Jul 27, 2018; Valencia; Spain|IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium (ISSN 2153-6996) (e-ISSN 2153-7003)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Pre-Launch Radiometric Performance Characterization of the Advanced Technology Microwave Sounder on the Joint Polar Satellite System-1 Satellite (2017)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Advanced Technology Microwave Sounder (ATMS) is a space-based, cross-track radiometer for operational atmospheric temperature and humidity sounding, utilizing 22 channels over a frequency range from 23 to 183 gigahertz. The ATMS for the Joint Polar Satellite System-1 has undergone two rounds of re-work in 2014-2015 and 2016, following performance issues discovered during and following thermal vacuum chamber (TVAC) testing at the instrument and observatory level. Final shelf-level testing, including measurement of pass band characteristics and spectral response functions, was completed in December 2016. Final instrument-level TVAC testing and calibration occurred during February 2017. Here we will describe the instrument-level TVAC calibration process, and illustrate with results from the final TVAC calibration effort.
    Keywords: Earth Resources and Remote Sensing
    Type: GSFC-E-DAA-TN44295 , 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2017); Jul 23, 2017 - Jul 28, 2017; Forth Worth, TX; United States
    Format: application/pdf
    Location Call Number Expected Availability
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