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    • Sounder SIPS: Sun Synchronous 13:30 orbit Climate Hyperspectral InfraRed Product (CHIRP): Calibrated Radiances from EOS-Aqua, S-NPP, JPSS-1/NOAA-20, V2 (SNDR13CHRP1) at GES DISC

    Metadata Updated: December 7, 2023

    The Climate Hyperspectral Infrared Radiance Product (CHIRP) is a Level 1 radiance product derived from Atmospheric Infrared Sounder (AIRS) on EOS-AQUA and the Cross-Track Infrared Sounders (CrIS) on the SNPP and JPSS-1+ platforms. (JPSS-1 is also called NOAA-20). CHIRP provides a consistent spectral response function (SRF) across all instruments. Inter-instrument radiometric offsets are removed with SNPP-CrIS chosen as the "standard". CHIRP follows the original instrument storage, i.e., granule in, granule out, and contains all information needed for retrievals (including cross-track, along-track, fov id, etc.). This version of CHIRP, SNDR13CHRP1, is the primary CHIRP product which provides a full radiance record from 2002 onwards starting with AIRS from September 1, 2002 to August 30, 2016, switching to the SNPP CrIS instrument on September 1, 2016. The SNDR13CHRP1 product then switches to using JPSS-1 CrIS radiances starting September 1, 2018. This selection of time periods provides the best match to times when the microwave sounders on each of these platforms exhibited good performance and avoids long outages (such as SNPP CrIS in early Spring 2019). CHIRP is available for AIRS, CrIS-SNPP, and CrIS-JPSS-1 for time periods not used in the product distributed here, and are named SNDR13CHRP1AQCal, SNDR13CHRP1SNCal, and SNDR13CHRP1J1Cal respectively.

    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/10.1117/12.2529400
    https://doi.org/10.1117/12.2061967
    https://doi.org/10.1029/2005JD006146
    https://doi.org/10.1029/2019GL085098
    https://doi.org/10.1117/12.2324605

    Dates

    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Sample image of an SNDR13CHRP1 v2 radiances converted to brightness temperature units.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C2011289787-GES_DISC
    Data First Published 2020-12-20
    Language en-US
    Data Last Modified 2020-12-20
    Category Aqua, SUOMI-NPP, NPP-JPSS, 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 Science Team/Larrabee Strow. 2020-12-20. SNDR13CHRP1. Version 2. Sounder SIPS: Sun Synchronous 13:30 orbit Climate Hyperspectral InfraRed Product (CHIRP): Calibrated Radiances from EOS-Aqua, S-NPP, JPSS-1/NOAA-20, V2. 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/WIG2N5C20MRJ. https://disc.gsfc.nasa.gov/datacollection/SNDR13CHRP1_2.html. Digital Science Data.
    Creator AIRS Science Team/Larrabee Strow
    Data Presentation Form Digital Science Data
    Graphic Preview Description Sample image of an SNDR13CHRP1 v2 radiances converted to brightness temperature units.
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDR13CHRP1.v2.png
    Harvest Object Id e28daa01-924a-4749-a0e5-39ffb27c71b5
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/WIG2N5C20MRJ
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Related Documents https://doi.org/10.1117/12.2529400, https://doi.org/10.1117/12.2061967, https://doi.org/10.1029/2005JD006146, https://doi.org/10.1029/2019GL085098, https://doi.org/10.1117/12.2324605
    Release Place Greenbelt, MD, USA
    Series Name SNDR13CHRP1
    Source Datajson Identifier True
    Source Hash 52a6b034082d78046353547e3da19da84c8a9c07643f76761c7c8c373d85e411
    Source Schema Version 1.1
    Spatial
    Temporal 2002-09-01T00:00:00Z/2023-02-28T00:00:00Z

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