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    • TRMM Precipitation Radar Surface Cross-Section L2 1.5 hours V7 (TRMM_2A21) at GES DISC

    Metadata Updated: April 9, 2026

    The new version of these data is in GPM-like format (consistent with the GPM Dual-frequency Radar data format), and can be found under the name GPM_2APR. This is the sigma zero algorithm, which inputs the PR power (1B21) and computes estimates of the path attenuation and its reliability by using the surface as a reference target. It also computes the spatial and temporal statistics of the surface scattering cross section and classifies the cross sections into land/ocean and rain/no rain categories. Changes in horizontal resolution resulting from the TRMM boost that occurred on 24 August 2001: Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 215 km; Horizontal Resolution: 4.3 km Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 247 km; Horizontal Resolution: 5.0 km

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date March 12, 2026
    Metadata Updated Date April 9, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 12, 2026
    Metadata Updated Date April 9, 2026
    Publisher NASA/GSFC/SED/ESD/TISL/GESDISC
    Maintainer
    Identifier /SDE/CMR_API/|C1282060544-GES_DISC
    Data Last Modified 2026-04-06
    Category Earth Science
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 21e93e47-40bd-48fc-96a3-b62235345837
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    License https://www.usa.gov/government-works
    Old Spatial "CARTESIAN",{"WestBoundingCoordinate":-180,"NorthBoundingCoordinate":38,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-38}
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 2e1167ec80910fcbe0ebbaa875e6f6ed21d9d57637bc3296ba78bdb68cd6d72e
    Source Schema Version 1.1
    Spatial
    Temporal 1997-12-31/2014-10-07

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