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    • NLDAS Secondary Forcing Data L4 Hourly 0.125 x 0.125 degree V2.0 (NLDAS_FORB0125_H) at GES DISC

    Metadata Updated: April 15, 2024

    This data set contains the secondary forcing hourly data "File B" for Phase 2 of the North American Land Data Assimilation System (NLDAS-2). The data are in 1/8th degree grid spacing and range from Jan 1979 to the present. The temporal resolution is hourly. The file format isnetCDF (converted from the GRIB data files).

    The non-precipitation land surface forcing fields for NLDAS-2 are derived from the analysis fields of the NCEP North American Regional Reanalysis (NARR). NARR analysis fields are 32-km spatial resolution and 3-hourly temporal frequency. Those NARR fields that are utilized to generate NLDAS-2 forcing fields are spatially interpolated to the finer resolution of the NLDAS 1/8th-degree grid and then temporally disaggregated to the NLDAS hourly frequency. NLDAS-2 is providing a second forcing file, "File B", in which the surface temperature, humidity, and wind fields are represented not at 2-meters and 10-meters above the height of the NLDAS terrain, but rather at the same height above the NLDAS terrain as the height above the NARR terrain of the lowest prognostic level of the NARR assimilation system (namely, the same height above the model terrain as the lowest prognostic level of the mesoscale Eta model, which is the assimilating model in NARR).

    The surface downward surface radiation field in "File B" is taken directly from NARR, without any bias correction. The precipitation and convective precipitation fields in "File B" are also taken directly from NARR, and are used to calculate the convective fraction provided in "File A". The aerodynamic conductance is "File B" is also taken from NARR.

    The hourly land surface forcing fields for NLDAS-2 are grouped into two files, "File A" and "File B". "File B" is the secondary (optional) forcing file and contains ten meteorological forcing fields. Details about the generation of the NLDAS-2 forcing datasets can be found in Xia et al. (2012).

    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/10.1029/2011JD016048
    https://doi.org/10.1029/2011JD016051
    https://doi.org/10.1029/2002JD003118
    https://doi.org/10.1175/1520-0450(1984)023%3C0222%3ATIOASO%3E2.0.CO%3B2
    https://doi.org/10.1029/2002JD003301

    Dates

    Metadata Created Date March 26, 2024
    Metadata Updated Date April 15, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    NLDAS-2 Secondary Forcing Hourly 0.125 degree Precipitation hourly total [kg m-2] 13Z January 1, 1979.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 26, 2024
    Metadata Updated Date April 15, 2024
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C2033167496-GES_DISC
    Data First Published 2021-04-11
    Language en-US
    Data Last Modified 2021-04-11
    Category NLDAS, geospatial
    Category Tag 16E15F51 D96E 4051 9124 75665Abdc6Ff "Water"
    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 NLDAS project. David M. Mocko, NASA/GSFC/HSL. 2021-04-11. NLDAS_FORB0125_H. Version 2.0. NLDAS Secondary Forcing Data L4 Hourly 0.125 x 0.125 degree V2.0. 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/10.5067/96S0R3LFOBTU. https://disc.gsfc.nasa.gov/datacollection/NLDAS_FORB0125_H_2.0.html. Digital Science Data.
    Creator NLDAS project
    Data Presentation Form Digital Science Data
    Editor David M. Mocko, NASA/GSFC/HSL
    Graphic Preview Description NLDAS-2 Secondary Forcing Hourly 0.125 degree Precipitation hourly total kg m-2 13Z January 1, 1979.
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/NLDAS_FORB0125_H_2.0.png
    Harvest Object Id 4d369c90-137a-4898-86b5-3b4d49300a43
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/96S0R3LFOBTU
    Metadata Type geospatial
    Old Spatial
    Program Code 026:001
    Related Documents https://doi.org/10.1029/2011JD016048, https://doi.org/10.1029/2011JD016051, https://doi.org/10.1029/2002JD003118, https://doi.org/10.1175/1520-0450(1984)023%3C0222%3ATIOASO%3E2.0.CO%3B2, https://doi.org/10.1029/2002JD003301
    Release Place Greenbelt, Maryland, USA
    Series Name NLDAS_FORB0125_H
    Source Datajson Identifier True
    Source Hash 00625802feeb47621afe5f656b7cf55040af27b9d4bb6d0eab590d73d069aa7b
    Source Schema Version 1.1
    Spatial
    Temporal 1979-01-01T13:00:00Z/2023-02-28T00:00:00Z

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