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    • GLDAS Noah Land Surface Model L4 monthly 0.25 x 0.25 degree Early Product V2.1 (GLDAS_NOAH025_M_EP) at GES DISC

    Metadata Updated: December 7, 2023

    NASA Global Land Data Assimilation System Version 2 (GLDAS-2) has three components: GLDAS-2.0, GLDAS-2.1, and GLDAS-2.2. GLDAS-2.0 is forced entirely with the Princeton meteorological forcing input data and provides a temporally consistent series from 1948 through 2014. GLDAS-2.1 is forced with a combination of model and observation data from 2000 to present. GLDAS-2.2 product suites use data assimilation (DA), whereas the GLDAS-2.0 and GLDAS-2.1 products are "open-loop" (i.e., no data assimilation). The choice of forcing data, as well as DA observation source, variable, and scheme, vary for different GLDAS-2.2 products.

    GLDAS-2.1 data products are now available in two production streams: one stream is forced with combined forcing data including GPCP version 1.3 (the main production stream), and the other stream is processed without this forcing data (the early production stream). Since the GPCP Version 1.3 data have a 3-4 month latency, the GLDAS-2.1 data products are first created without it, and are designated as Early Products (EPs), with about 1.5 month latency. Once the GPCP Version 1.3 data become available, the GLDAS-2.1 data products are processed in the main production stream and are removed from the Early Products archive.

    This data product is an Early Product for GLDAS-2.1 Noah 0.25 degree monthly dataset.

    The monthly data product was generated through temporal averaging of GLDAS-2.1 Noah 3-hourly data simulated with the Noah Model 3.6 in Land Information System (LIS) Version 7. The data product contains 36 land surface fields from January 2000 to present.

    The GLDAS-2.1 simulation started on January 1, 2000 using the conditions from the GLDAS-2.0 simulation. This simulation was forced with National Oceanic and Atmospheric Administration (NOAA)/Global Data Assimilation System (GDAS) atmospheric analysis fields (Derber et al., 1991), the disaggregated Global Precipitation Climatology Project (GPCP) V1.3 Daily Analysis precipitation fields (Adler et al., 2003; Huffman et al., 2001), and the Air Force Weather Agency’s AGRicultural METeorological modeling system (AGRMET) radiation fields. The simulation used with GDAS and GPCP only from 2000 to February 2001, followed by addition of AGRMET for March 1, 2001 onwards.

    The GLDAS-2.1 products supersede their corresponding GLDAS-1 products.

    The GLDAS-2.1 data are archived and distributed in NetCDF format.

    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

    References

    https://doi.org/10.1175/BAMS-85-3-381

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    GLDAS-2.1 Noah monthly 0.25 degree Early Product soil moisture (0-10 cm) [kg m-2] for Dec 2019.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date December 7, 2023
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C1700900648-GES_DISC
    Data First Published 2020-02-18
    Language en-US
    Data Last Modified 2020-02-18
    Category GLDAS, 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 Beaudoing, H. and M. Rodell, NASA/GSFC/HSL. 2020-02-18. GLDAS_NOAH025_M_EP. Version 2.1. GLDAS Noah Land Surface Model L4 monthly 0.25 x 0.25 degree Early Product V2.1. Greenbelt, Maryland, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://doi.org/10.5067/5OVHMFF2IAV3. https://disc.gsfc.nasa.gov/datacollection/GLDAS_NOAH025_M_EP_2.1.html. Digital Science Data.
    Creator Beaudoing, H. and M. Rodell, NASA/GSFC/HSL
    Data Presentation Form Digital Science Data
    Graphic Preview Description GLDAS-2.1 Noah monthly 0.25 degree Early Product soil moisture (0-10 cm) kg m-2 for Dec 2019.
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/GLDAS_NOAH025_M_EP_2.1.png
    Harvest Object Id 193ab789-b324-4faf-998d-f0ea0d2f7985
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/5OVHMFF2IAV3
    Metadata Type geospatial
    Old Spatial -180.0 -60.0 180.0 90.0
    Program Code 026:001
    Related Documents https://doi.org/10.1175/BAMS-85-3-381
    Release Place Greenbelt, Maryland, USA
    Series Name GLDAS_NOAH025_M_EP
    Source Datajson Identifier True
    Source Hash f4e82cd0f112c6e34eee5fe9c952e2148a269c12ee539b4ec7f479f5b1506ac6
    Source Schema Version 1.1
    Spatial
    Temporal 2019-12-01T00:00:00Z/2022-01-17T00:00:00Z

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