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    • AIRS/Aqua L2G Precipitation Estimate (AIRS-only) V006 (AIRG2SSD_IRonly) 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. This precipitation estimate from AIRS IR only is using a TOVS-like algorithm, and is intended for merging into the precipitation product of the Global Precipitation Climatology Project (GPCP). The precipitation estimate from AIRS Level 2 Support product, which are 6-min swath granules (240 per day) are combined here into one daily "Level 2G" global grid with dimensions (24x1440x720). Thus every hour is a "layer", and the resulting grid cell size is 0.25 degree (~25 km). Thus the grid size is made to fit TRMM products. Since AIRS precipitation is retrieved at AMSU footprint resolution, which is about 45 km at nadir, many grid cells in this 0.25-deg grid are "empty". The data are stored such that the first line is the South Pole. The geolocation information for every hour-layer is also provided in the file.

    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

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date April 22, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Sample image for layer 19 of the precipitation estimate from AIRS Level 2 Support product combined into one daily "Level 2G" global grid with dimensions (24x1440x720). Every hour is a "layer", and the resulting grid cell size is 0.25 degree (~25 km).

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date April 22, 2024
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C1618076955-GES_DISC
    Data First Published 2002-08-30
    Language en-US
    Data Last Modified 2024-04-18
    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 Science Team (Joel Susskind, NASA/GSFC). 2013-01-15. AIRG2SSD_IRonly. Version 006. AIRS/Aqua L2G Precipitation Estimate (AIRS-only) V006. 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/IVM9SK5USQOS. https://disc.gsfc.nasa.gov/datacollection/AIRG2SSD_IRonly_006.html. Digital Science Data.
    Creator AIRS Science Team (Joel Susskind, NASA/GSFC)
    Data Presentation Form Digital Science Data
    Graphic Preview Description Sample image for layer 19 of the precipitation estimate from AIRS Level 2 Support product combined into one daily "Level 2G" global grid with dimensions (24x1440x720). Every hour is a "layer", and the resulting grid cell size is 0.25 degree (~25 km).
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/AIRG2SSD_006.png
    Harvest Object Id 266da67f-087c-444c-a92c-42664fbd448b
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/IVM9SK5USQOS
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Release Place Greenbelt, MD, USA
    Series Name AIRG2SSD_IRonly
    Source Datajson Identifier True
    Source Hash 5f114f1742a6691af1e7949ad7753b3646f34a0725a75ef0420b5afb9903bafc
    Source Schema Version 1.1
    Spatial
    Temporal 2002-08-30T00:00:00Z/2024-04-22T00:00:00Z

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