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    • Sounder SIPS: Aqua AIRS Level-1B Calibration Subset: Summary, V2 (SNDRAQIML1BCALSUBSUM) at GES DISC

    Metadata Updated: April 22, 2024

    The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. AIRS/Aqua Level-1C calibration subset including clear cases, special calibration sites, random nadir spots, and high clouds. Infrared temperature sounders generate a large amount of Level-1B spectral data. For example, the AIRS instrument with 2378 channels, its visible light component and AMSU with 15 channels create 3x240 files each day, for a total of over 500 MB of data.

    The purpose of the Calibration Data Subsets is extract key information from these data into a few daily files to: 1. Facilitate a quick evaluation of the absolute calibration of the instruments. 2. Facilitate an assessment of the instrument performance under clear, cloudy, and extreme hot and cold conditions. 3. Facilitate the evaluation of instrument trends and their significance relative to climate trends. 4. Facilitate the comparison of AIRS with CrIS using their equivalent data subsets.

    The output files are constructed from Level-1B or Level-1C IR and MW brightness or antenna temperatures. Each file contains selected observations taken from a nominal 24-hour period. The “summary” product includes a large set of cases of interest, including all identified spectra that match selection criteria detailed below for clear, special cloud classes, etc. These amount to about 10% of all spectra. But for each selected case only brightness temperatures (BTs) for selected key channels are saved.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    References

    https://doi.org/10.3390/rs12172743
    https://doi.org/10.3390/rs12081338

    Dates

    Metadata Created Date May 30, 2023
    Metadata Updated Date April 22, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Graphic Preview

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date April 22, 2024
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C2210019692-GES_DISC
    Data First Published 2022-01-28
    Language en-US
    Data Last Modified 2024-04-17
    Category Aqua, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation AIRS project, Jet Propulsion Laboratory. 2022-12-12. SNDRAQIML1BCALSUBSUM. Version 2. Sounder SIPS: Aqua AIRS Level-1B Calibration Subset: Summary. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://doi.org/10.5067/7Q4P1LBIZYZ7. https://disc.gsfc.nasa.gov/datacollection/SNDRAQIML1BCALSUBSUM_2.html. Digital Science Data.
    Creator AIRS project, Jet Propulsion Laboratory
    Data Presentation Form Digital Science Data
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRAQIML1BCALSUBSUM.2.amsua.BT.channel1.20070112.png
    Harvest Object Id 466fe2aa-9482-4cb3-9619-9ac2990195f2
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/7Q4P1LBIZYZ7
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Related Documents https://doi.org/10.3390/rs12172743, https://doi.org/10.3390/rs12081338
    Release Place Greenbelt, MD, USA
    Series Name SNDRAQIML1BCALSUBSUM
    Source Datajson Identifier True
    Source Hash d34b8b2368446898aa821e5933493291e9d4c4417c197d691b7cc0677c0aa136
    Source Schema Version 1.1
    Spatial
    Temporal 2002-08-31T00:00:00Z/2024-04-22T00:00:00Z

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