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    • TMI/TRMM surface soil moisture (LPRM) L3 1 day 25 km x 25 km daytime V001 (LPRM_TMI_DY_SOILM3) at GES DISC

    Metadata Updated: February 6, 2026

    TMI/TRMM surface soil moisture (LPRM) L3 1 day 25 km x 25 km daytime V001 is a Level 3 (gridded) data set. Its land surface parameters, surface soil moisture, land surface (skin) temperature, and vegetation water content, are derived from passive microwave remote sensing data from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI), using the Land Parameter Retrieval Model (LPRM). There are two files per day, one daytime and one nighttime, archived as two different products. This document is for the daytime product. The data set covers the period from December 1997 to April 2015 (when the instruments on the TRMM satellite were shut down in preparation for its reentry into the earth's atmosphere).The LPRM is based on a forward radiative transfer model to retrieve surface soil moisture and vegetation optical depth. The land surface temperature is derived separately from TMI's Ka-band (37 GHz). A unique feature of this method is that it can be applied at any microwave frequency, making it very suitable to exploit all the available passive microwave data from various satellites.Input data are from the TMI Brightness Temperatures (1B-11) product, daytime passes, as processed using LPRM (i.e., LPRM/TMI/TRMM Level 2 product, LPRM_TMI_SOILM2_V001).

    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 April 11, 2025
    Metadata Updated Date February 6, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date February 6, 2026
    Publisher NASA/GSFC/SED/ESD/TISL/GESDISC
    Maintainer
    Identifier 10.5067/8CHFMAWJQTCP
    Data Last Modified 2025-08-06
    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 fb65cafd-37c2-467d-a6a1-90a2cf686632
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Old Spatial "CARTESIAN",{"WestBoundingCoordinate":-180,"NorthBoundingCoordinate":40,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-40}
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 313aacf942704ed065d9cc81910b8322f752b4daed4d0d8fa69c1fc997f7feba
    Source Schema Version 1.1
    Spatial

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