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    • GEDI L4C Footprint Level Waveform Structural Complexity Index, Version 2

    Metadata Updated: June 18, 2024

    This dataset contains Global Ecosystem Dynamics Investigation (GEDI) Level 4C (L4C) Version 2 predictions ofthe Waveform Structural Complexity Index (WSCI) and estimates of prediction intervals for each footprint estimateat 95% confidence. In this version, the granules are in sub-orbits. The algorithm setting group selection used forGEDI04_C is the same as in the GEDI02_A product. The footprints are located within the global latitude bandobserved by the International Space Station (ISS), nominally 51.6 degrees N and S and reported for the period2019-04-17 to 2023-03-16. The GEDI instrument consists of three lasers producing a total of eight beam groundtransects, which instantaneously sample eight ~25 m footprints spaced approximately every 60 m along-track. TheGEDI beam transects are spaced approximately 600 m apart on the Earth's surface in the cross-track direction, for anacross-track width of ~4.2 km. Footprint WSCI was derived from XGBoost regression models relating simulatedGEDI Level 2A (L2A) waveform relative height (RH) metrics to a 3D structural complexity metric calculated frommatched Airborne laser Scanning (ALS) point clouds. Four global WSCI models were trained on a plant functionaltype (PFT) basis (i.e., deciduous broadleaf trees, evergreen broadleaf trees, evergreen needleleaf trees, and thecombination of grasslands, shrubs, and woodlands). For each of the eight beams, additional data are reported withthe WSCI estimates, including the associated uncertainty metrics, quality flags, and other information about theGEDI L2A waveform for this selected algorithm setting group. Additional model outputs include WSCI predictionsfor each of the six GEDI L2A algorithm setting groups and associated prediction intervals. Providing these ancillarydata products will allow users to evaluate and select alternative algorithm setting groups. The data are provided in HDF5 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

    Dates

    Metadata Created Date June 4, 2024
    Metadata Updated Date June 18, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Example subset of the Waveform Structural Complexity Index (WSCI) predictions from the GEDI Level-4C footprint product over the Eastern Amazon.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 4, 2024
    Metadata Updated Date June 18, 2024
    Publisher ORNL_DAAC
    Maintainer
    Identifier C3049900163-ORNL_CLOUD
    Data First Published 2024-05-21
    Language en-US
    Data Last Modified 2024-06-11
    Category GEDI, 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 De Conto, T., J. Armston, and R.O. Dubayah. 2024. GEDI L4C Footprint Level Waveform Structural Complexity Index, Version 2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2338
    Graphic Preview Description Example subset of the Waveform Structural Complexity Index (WSCI) predictions from the GEDI Level-4C footprint product over the Eastern Amazon.
    Graphic Preview File https://daac.ornl.gov/GEDI/guides/GEDI_L4C_WSCI_Fig1.jpg
    Harvest Object Id 56850cc5-7db5-4ba6-9d62-cb77841cf517
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2338
    Metadata Type geospatial
    Old Spatial -180.0 -53.0 180.0 54.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 8799bde407ca8a9e96b79917cde53d1a962946d3e583bf9b4bebf4ababc1bab7
    Source Schema Version 1.1
    Spatial
    Temporal 2019-04-17T23:03:08Z/2023-03-16T21:33:25Z

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