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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    AMSR2/GCOM-W1 downscaled surface soil moisture (LPRM) L2B V001 (LPRM_AMSR2_DS_SOILM2) at GES DISC

    Metadata Updated: February 22, 2025

    AMSR2/GCOM-W1 downscaled surface soil moisture (LPRM) L2B V001 is a Level 2 (swath) 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 Advanced Microwave Scanning Radiometer 2 (AMSR2), using the Land Parameter Retrieval Model (LPRM). Each swath is packaged with associated geolocation fields. The data set covers the period from May 2012, when the Japan Aerospace Exploration Agency (JAXA) Global Change Observation Mission-1st Water GCOM-W1 satellite was launched, to the present. The spatial resolution of the data is based on a resampling of the nominally 46 and 31 km resolutions, respectively, of AMSR2's C and X bands (6.9/7.3 and 10.7 GHz, respectively) to 25 km by 25 km and then a downscaling, using the smoothing filter-based intensity modulation (SFIM) technique, to 10 km by 10 km grids.

    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 the AMSR2's Ka-band (36.5 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 AMSR2 spatial-resolution-matched brightness temperatures (L1SGRTBR) product, archived at JAXA.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    References

    https://doi.org/10.1029/2007JF000769
    https://doi.org/10.1007/s10712-008-9044-0
    https://doi.org/10.1029/2008JD010257
    https://doi.org/10.1109/LGRS.2011.2114872
    https://doi.org/10.1175/JHM-D-13-0200.1

    Dates

    Metadata Created Date February 22, 2025
    Metadata Updated Date February 22, 2025

    Metadata Source

    Harvested from nasa test json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 22, 2025
    Metadata Updated Date February 22, 2025
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C1235316219-GES_DISC
    Data First Published 2014-09-16
    Language en-US
    Data Last Modified 2025-02-19
    Category GCOM-W, geospatial
    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 ff6f309e-5331-471c-9721-b41619544d0e
    Harvest Source Id a73e0c30-4684-40ef-908e-d22e9e9e5f86
    Harvest Source Title nasa test json
    Homepage URL https://doi.org/10.5067/KZ9OOIENUO0C
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Related Documents https://doi.org/10.1029/2007JF000769, https://doi.org/10.1007/s10712-008-9044-0, https://doi.org/10.1029/2008JD010257, https://doi.org/10.1109/LGRS.2011.2114872, https://doi.org/10.1175/JHM-D-13-0200.1
    Source Datajson Identifier True
    Source Hash 45e25f36c9f0261a70fcfe9c39df28b47d668b728e28d38ea6e992e4ff0f751d
    Source Schema Version 1.1
    Spatial
    Temporal 2012-07-02T23:18:38Z/2022-01-17T00:00:00Z

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