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    • High-Resolution Shrub Biomass and Uncertainty Maps, Toolik Lake Area, Alaska, 2013

    Metadata Updated: December 7, 2023

    This dataset contains estimates for aboveground shrub biomass and uncertainty at high spatial resolution (0.80-m) across three research areas near Toolik Lake, Alaska. The estimates for August of 2013 were generated and mapped using Random Forest modeling with input variables of optimized LiDAR-derived canopy volume and height, mean NDVI from 4-band RGB color and near-IR orthophotographs, and harvested biomass data. Uncertainty in the final shrub biomass maps was quantified by producing separate maps showing the coefficient of variation (CV) of the Random Forest map estimates. Shrub biomass was harvested at Toolik Lake in 2014 and used to optimize inputs and validate the final model and these biomass data are also provided.

    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 1, 2022
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    A: Overview of shrub biomass maps for the three LiDAR collection footprints (note biomass color scale is nonlinear). B-E: Enlarged view of a representative area showing B) RGB orthoimage for reference, C) Final shrub biomass map (color scale as in A), D) LiDAR-derived canopy volume at native resolution of 0.15m, and E) NDVI at native resolution of 0.043 m (Figure from Greaves et al., 2016).

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2162131297-ORNL_CLOUD
    Data First Published 2018-04-09
    Language en-US
    Data Last Modified 2023-06-12
    Category ABoVE, 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 Greaves, H.E., L. Vierling, J. Eitel, N. Boelman, T. Magney, C. Prager, and K. Griffin. 2018. High-Resolution Shrub Biomass and Uncertainty Maps, Toolik Lake Area, Alaska, 2013. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1573
    Graphic Preview Description A: Overview of shrub biomass maps for the three LiDAR collection footprints (note biomass color scale is nonlinear). B-E: Enlarged view of a representative area showing B) RGB orthoimage for reference, C) Final shrub biomass map (color scale as in A), D) LiDAR-derived canopy volume at native resolution of 0.15m, and E) NDVI at native resolution of 0.043 m (Figure from Greaves et al., 2016).
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/Shrub_Biomass_Toolik_Lake_AK_Fig1.png
    Harvest Object Id e435ba1b-78f1-4901-8ed0-6784bed2c128
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1573
    Metadata Type geospatial
    Old Spatial -149.66 68.6 -149.29 68.65
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash ed0efd985cbc8758c48692cdc52d74089afe390fe58921cd9ad8448cb2da01bb
    Source Schema Version 1.1
    Spatial
    Temporal 2013-08-01T00:00:00Z/2014-07-15T23:59:59Z

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