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    • Forest Aboveground Biomass for the Southwestern U.S. from MISR, 2000-2021

    Metadata Updated: December 6, 2023

    This dataset provides estimates of forest aboveground biomass (AGB; in Mg ha-1) at a resolution of 250 m for the southwestern United States over the time period 2000-2021. The AGB estimates were derived from the Jet Propulsion Laboratory Multiangle Imaging Spectro-Radiometer (MISR) Level 1B2 Terrain radiance data and a multi-angle approach that exploits the relationship between forest AGB and a suite of red band reflectance values modeled at viewing angles with respect to the direction of illumination. The year 2000 National Biomass and Carbon Dataset (NBCD 2000) AGB estimates were used to fit a model coefficient for the MISR-derived AGB estimates for the year 2000, with AGB estimates for all subsequent years dependent on both this coefficient and MISR red band bidirectional reflectance factors (BRFs). Quality assurance (QA) files are also provided that allow users to impose criteria of varying stringency. The bidirectional reflectance distribution function (BRDF) model-fitting root mean square error (RMSE) value was used as one of the criteria to determine if the AGB estimates were reasonable. This dataset is the first example of forest AGB estimation based on a multi-angle index applied using MISR data.

    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 May 30, 2023
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Generalized 2005 aboveground biomass (AGB) map for the southwestern U.S, derived from the Multiangle Imaging Spectro-Radiometer (MISR).

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2515861985-ORNL_CLOUD
    Data First Published 2022-03-21
    Language en-US
    Data Last Modified 2023-06-12
    Category NACP, 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 Chopping, M.J., Z. Wang, C. Schaaf, M.A. Bull, and R.R. Duchesne. 2022. Forest Aboveground Biomass for the Southwestern U.S. from MISR, 2000-2021. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1978
    Graphic Preview Description Generalized 2005 aboveground biomass (AGB) map for the southwestern U.S, derived from the Multiangle Imaging Spectro-Radiometer (MISR).
    Graphic Preview File https://daac.ornl.gov/NACP/guides/MISR_Forest_AGB_SW_US_Fig1.png
    Harvest Object Id 9911a741-799c-4de2-9d2c-02f423b952e2
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1978
    Metadata Type geospatial
    Old Spatial -126.18 28.6 -99.02 46.28
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 839bad943a164bbd8be13914ea4d7f55d83f694a0b2f685c5b1c68ae69b60876
    Source Schema Version 1.1
    Spatial
    Temporal 2000-05-15T00:00:00Z/2021-06-30T23:59:59Z

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