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    • GPM TMI on TRMM Brightness Temperatures L1B 1.5 hours 13 km V07 (GPM_1BTMI) at GES DISC

    Metadata Updated: December 6, 2023

    This is the new (GPM-formated) TRMM product. It replaces the old TRMM_1B11

    Version 07 is the current version of the data set. Previous versions have been superseded by Version 07.

    This dataset contains TRMM Micrwave Imager (TMI) L1B calibrated radiances in terms of Brightness Temperatures.

    The TMI calibration algorithm (1B11) converts the radiometer counts to antenna temperatures by applying a linear relationship of the form Ta = c1 + c2 x count. The coefficients are provided by the instrument contractor. Antenna temperatures are corrected for cross-polarization and spill over to produce brightness temperatures (Tb), but no antenna beam pattern correction or sample to pixel averaging are performed. Temperatures are provided at 104 scan positions for the low frequency channels and 208 scan positions at 85 GHz. There are four samples per pixel (3 -dB beamwidth) at 10 GHz, two samples at 19, 22, and 37 GHz, and one sample per pixel for the 85 GHz. Data Flow Description

    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: 760 km; Horizontal Resolution: ~13 km

    Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 878 km; Horizontal Resolution: ~13 km

    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 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Graphic Preview

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C2264132608-GES_DISC
    Data First Published 2021-07-21
    Language en-US
    Data Last Modified 2021-07-21
    Category TRMM, 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 Tropical Rainfall Measuring Mission (TRMM). 2021-07-29. GPM_1BTMI. GPM TMI on TRMM Brightness Temperatures L1B 1.5 hours 13 km V07. Greenbelt, MD. 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/GPM/TMI/TRMM/1B/07. https://disc.gsfc.nasa.gov/datacollection/GPM_1BTMI_07.html. Digital Science Data.
    Creator Tropical Rainfall Measuring Mission (TRMM)
    Data Presentation Form Digital Science Data
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/GPM/browse/GPM_1BTMI.png
    Harvest Object Id 59a0bfca-cc25-43c9-8235-e2dadad5d523
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/GPM/TMI/TRMM/1B/07
    Metadata Type geospatial
    Old Spatial -180.0 -38.0 180.0 38.0
    Program Code 026:001
    Release Place Greenbelt, MD
    Series Name GPM_1BTMI
    Source Datajson Identifier True
    Source Hash 79b89d79101b6b8b6732ac2c4ee845a969f355329f365207b912f81fb05f5170
    Source Schema Version 1.1
    Spatial
    Temporal 1997-12-07T00:00:00Z/2015-04-08T23:59:59.999Z

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