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    • SMAP Enhanced L3 Radiometer Global and Polar Grid Daily 9 km EASE-Grid Soil Moisture V006

    Metadata Updated: August 22, 2025

    This enhanced Level-3 (L3) soil moisture product provides a composite of daily estimates of global land surface conditions retrieved by the Soil Moisture Active Passive (SMAP) radiometer. This product is a daily composite of SMAP Level-2 (L2) soil moisture which is derived from SMAP Level-1C (L1C) interpolated brightness temperatures. Backus-Gilbert optimal interpolation techniques are used to extract information from SMAP antenna temperatures and convert them to brightness temperatures, which are posted to the 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in a global cylindrical projection. As of 2021, the data are also posted to the Northern Hemisphere EASE-Grid 2.0, an azimuthal equal-area projection.

    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 13, 2023
    Metadata Updated Date August 22, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 13, 2023
    Metadata Updated Date August 22, 2025
    Publisher NASA NSIDC DAAC
    Maintainer
    Identifier C2776463943-NSIDC_ECS
    Data First Published 2015-03-31
    Language en-US
    Data Last Modified 2025-07-17
    Category 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 d86fff61-17b0-4d81-848c-e1886df0346e
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/M20OXIZHY3RJ
    Metadata Type geospatial
    Old Spatial -180.0 -85.044 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 17908dfe16d61fb014bc148d9a9a1a8032325d086495fcc47309b6901a052924
    Source Schema Version 1.1
    Spatial
    Temporal 2015-03-31T00:00:00Z/2025-03-24T00:00:00Z

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