JPSS-1 ATMS Level 1B Brightness Temperature V2 (SNDRJ1ATMSL1B) at GES DISC

Description

The Advanced Technology Microwave Sounder (ATMS) Level 1B data files contain brightness temperature measurements along with ancillary spacecraft, instrument, and geolocation data of the ATMS instrument on the Joint Polar Satellite System-1 (JPSS-1) platform. This platform is also known as NOAA-20 (National Oceanic and Atmospheric Administration). The ATMS is a 22-channel mm-wave radiometer. The ATMS will measure upwelling radiances in six frequency bands centered at 23 GHz, 31 GHz, 50-58 GHz, 89 GHz, 66 GHz, and 183 GHz. The ATMS is a total power radiometer, with “through-the-antenna” radiometric calibration. Radiometric data is collected by a pair of antenna apertures, scanned by rotating flat plate reflectors. Scanning is performed cross-track to the satellite motion from sun to anti-sun, using the "integrate-while-scan" type data collection. The scan period is 8/3 second, synchronized to the Cross-track Infrared Sounder (CrIS) using a spacecraft provided scan synchronization pulse. Since the JPSS-1 satellite is orbiting at an altitude of about 830 km, the instantaneous spatial resolution on the ground at nadir is about 16 km, 32 km, or 75 km depending upon the channel. The brightness temperature data are contained in an array with 135 rows in the along-track direction, 96 columns in the cross-track direction, and a 3rd dimension for each of the 22 channels. The ATMS cross-track scan interval is 0.018 seconds and the along-track scan period is 8/3 seconds. Data products are constructed on six minute boundaries. If you were redirected to this page from a DOI from an older version, please note this is the current version of the product. Please contact the GES DISC user support if you need information about previous data collections.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FVP66V3OTXOPY
33 Product Quality Assessment https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/SNPP_Sounder/3.3_ScienceDataProductDocumentation/3.3.5_ProductQuality/Report_assessment_V2_20180306H.pdf
33 Algorithm Theoretical Basis Document NASA L1b: Advanced Technology Microwave Sounder (ATMS). https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/SNPP_Sounder/3.3_ScienceDataProductDocumentation/3.3.4_ProductGenerationAlgorithms/ATMS_NASA_ATBD_JPL_Review.pdf
34 SNDRJ1ATMSL1B_2.png https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRJ1ATMSL1B_2.png
21 Access the dataset landing page from the GES DISC website. https://disc.gsfc.nasa.gov/datacollection/SNDRJ1ATMSL1B_2.html
21 Access the data via HTTPS. https://sounder.gesdisc.eosdis.nasa.gov/data/JPSS1_Sounder_Level1/SNDRJ1ATMSL1B.2/
21 Use the Earthdata Search to find and retrieve data sets across multiple data centers. https://search.earthdata.nasa.gov/search?q=SNDRJ1ATMSL1B+002
21 Access the data via the OPeNDAP protocol. https://sounder.gesdisc.eosdis.nasa.gov/opendap/JPSS1_Sounder_Level1//SNDRJ1ATMSL1B.2/contents.html
33 README Document https://docserver.gesdisc.eosdis.nasa.gov/public/project/JPSS-1/SNDRJ1ATMSL1B.2.Readme.12AUG2019.pdf

Tags

  • spectral-engineering
  • microwave
  • earth-science

Topics

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