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    • Pantropical Forest Height and Biomass from GEDI and TanDEM-X Data Fusion

    Metadata Updated: March 28, 2024

    This dataset includes maps of canopy height and aboveground biomass at spatial resolutions of 25 m and 100 m for Mexico, Gabon, French Guiana, and the Amazon Basin. The GEDI-TanDEM-X (GTDX) fusion maps were created by combining data from NASA's Global Ecosystem Dynamics Investigation (GEDI) Version 2 footprint data (from 2019-04-18 to 2021-08-18) and TanDEM-X (abbreviated as TDX) Interferometric Synthetic Aperture Radar (InSAR) images (from 2011-01-06 to 2020-12-31). The GTDX canopy height maps were generated by using the TDX coherence maps to invert the TDX height and subsequently using GEDI canopy height as reference data to calibrate the inverted height. The GTDX aboveground biomass maps were produced based on a generalized hierarchical model-based (GHMB) framework that utilizes GEDI biomass as training data to establish models for estimating biomass based on the GTDX canopy height. The dataset also includes maps of canopy height uncertainty, biomass uncertainty, and ancillary data including a regional modeling parameter and forest disturbance. The uncertainty of GTDX canopy height was estimated for each pixel by propagating the GEDI-TDX model error to each GTDX pixel prediction. The uncertainty of GTDX aboveground biomass was estimated by considering the error in both the GEDI footprint biomass data and the GEDI-TDX model, and then applying it to each GTDX biomass pixel prediction. The regional model parameter indicates the size of the analysis window (2 to 50 km or country wide) used for each pixel. The forest disturbance information identifies pixels where disturbance occurred between 2011 and 2020, and provides the year of last disturbance.

    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 March 28, 2024
    Metadata Updated Date March 28, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Forest canopy height from GEDI-TDX data fusion over Gabon, Mexico, French Guiana and the Amazon Basin. Source: height_mexico_25m.tif, height_gabon_25m.tif, height_frenchguiana_25m.tif, height_amazon_25m.tif

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 28, 2024
    Metadata Updated Date March 28, 2024
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2883623174-ORNL_CLOUD
    Data First Published 2024-02-29
    Language en-US
    Data Last Modified 2024-03-02
    Category GEDI, CMS, 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 Dubayah, R.O., W. Qi, J. Armston, T. Fatoyinbo, K. Papathanassiou, M. Pardini, A. Stovall, C. Choi, and V. Cazcarra-Bes. 2023. Pantropical Forest Height and Biomass from GEDI and TanDEM-X Data Fusion. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2298
    Graphic Preview Description Forest canopy height from GEDI-TDX data fusion over Gabon, Mexico, French Guiana and the Amazon Basin. Source: height_mexico_25m.tif, height_gabon_25m.tif, height_frenchguiana_25m.tif, height_amazon_25m.tif
    Graphic Preview File https://daac.ornl.gov/GEDI/guides/ForestHt_Biomass_GEDI_TDX_Fig1.jpg
    Harvest Object Id 463197de-7fd3-4ae7-a82d-21b2e1eab2d6
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2298
    Metadata Type geospatial
    Old Spatial -119.0 -15.01 15.01 33.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 8cefe2c09dea6b5e9c039d7c7ade52bb8ffd80ede65315e28b37ba34cd5a0e6d
    Source Schema Version 1.1
    Spatial
    Temporal 2011-01-06T00:00:00Z/2021-08-18T23:59:59Z

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