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    • GPM GMI XCAL Common Calibrated Brightness Temperatures L1BASE 1.5 hours 13 km V07 (GPM_BASEGPMGMI_XCAL) at GES DISC

    Metadata Updated: December 7, 2023

    Version 07 is the current version of the data set. Older versions are no longer available and have been superseded by the current version.

    Consistent rainfall retrievals from each instrument mandate the basic sensor radiance measurements (brightness temperature, Tb) to be consistently inter-calibrated.

    Fundamental to this concept is the existence of the GPM Microwave Imager (GMI), a conically scanning multifrequency radiometer in non-sun-synchronous orbit, which serves as a radiometric transfer standard for the other passive microwave sensors on cooperative (polar orbiting) constellation satellites. This GPM inter-satellite calibration process is known as XCAL.

    GMIBASEXCAL is the standard GMI calibration product with reduced precision of all physical fields. It consists of one full orbit with no overlaps to other orbits in the production although up to 200 overlap scans may be used for multi-scan calibration in the process.

    This GPM GMI product contains "GMI Antenna Temperatures", and is written as a multi-Swath Structure. Swath S1 has channels 1-9: 10V 10H 19V 19H 23V 37V 37H 89V 89H. Swath S2 has channels 10-13: 166V 166H 183+/-3V 183+/-8V. S3 S4 are full rotation versions of S1 S2.

    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 December 1, 2022
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Brightness Temperature from GPM GMI (13 km x 13 km) for 06/30/2016 (GPM_BASEGPMGMI_XCAL)

    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 C2259345466-GES_DISC
    Data First Published 2022-05-09
    Language en-US
    Data Last Modified 2022-05-01
    Category GPM, 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 GPM Science Team. 2022-05-09. GPM_BASEGPMGMI_XCAL. Version 07. GPM GMI XCAL Common Calibrated Brightness Temperatures L1BASE 1.5 hours 13 km V07. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, NASA Goddard Earth Science Data and Information Services Center (GES DISC). https://doi.org/10.5067/GPM/GMI/BASE-XCAL/07. https://disc.gsfc.nasa.gov/datacollection/GPM_BASEGPMGMI_XCAL_07.html. Digital Science Data.
    Creator GPM Science Team
    Data Presentation Form Digital Science Data
    Graphic Preview Description Brightness Temperature from GPM GMI (13 km x 13 km) for 06/30/2016 (GPM_BASEGPMGMI_XCAL)
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/GPM_BASEGPMGMI_XCAL_05.png
    Harvest Object Id 7a515481-513e-409f-aeb3-4a7b09c13ff3
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/GPM/GMI/BASE-XCAL/07
    Metadata Type geospatial
    Old Spatial -180.0 -70.0 180.0 70.0
    Program Code 026:001
    Release Place Greenbelt, MD, USA
    Series Name GPM_BASEGPMGMI_XCAL
    Source Datajson Identifier True
    Source Hash fcc93c6e5d66c293800c64e75e0cac93403528b54d49fc22ee5dd119ec548a1a
    Source Schema Version 1.1
    Spatial
    Temporal 2014-03-04T00:00:00Z/2023-02-28T00:00:00Z

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