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    • ABoVE: AirSWOT Ka-band Radar over Surface Waters of Alaska and Canada, 2017

    Metadata Updated: December 6, 2023

    AirSWOT is an airborne calibration and validation instrument for the upcoming Surface Water Topography Mission (SWOT) satellite. AirSWOT is capable of producing high resolution digital elevation models over land and water bodies. This dataset provides AirSWOT Ka-band (35.75 GHz) radar data products collected from an airborne platform over parts of Alaska and Canada during the period 2017-07-09 to 2017-08-17. Flights targeted specific surface water features, including rivers, lakes, ponds, and wetlands in the ABoVE domain. The radar data include six products: elevation (above the WGS84 ellipsoid), incidence angle, magnitude (backscatter), interferometric correlation (coherence), DHDPHI (incidence angle dependent height sensitivity), and error (estimated height random error, 1-sigma standard deviation). The flight lines were selected to span a full spectrum of permafrost conditions (permafrost-free to continuous permafrost, low to high ground ice content), ecosystems, climatic regions, topographic relief, and geological substrates across the ABoVE domain to investigate surface water responses to thawing permafrost and spatial and temporal variability in terrestrial water storage by measuring elevation and extent of surface waters. The data are provided in two forms: 1) the original output (outer-swath products only) at 3.6 m2 resolution in UTM coordinates from the AirSWOT processing group at the Jet Propulsion Laboratory (JPL), and 2) the ABoVE Projection at 3.6 m2 resolution, clipped to the ABoVE reference grid tiles using the C grid.

    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 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Example of AirSWOT radar products in ABoVE Projection at 3.6 m2 resolution, for a flight over the ABoVE C grid Ch065v034. Left: Shape for backscatter image. Middle: Magnitude image. Right: Elevation product image.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2111827036-ORNL_CLOUD
    Data First Published 2019-03-29
    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 Fayne, J.V., L.C. Smith, L.H. Pitcher, and T.M. Pavelsky. 2019. ABoVE: AirSWOT Ka-band Radar over Surface Waters of Alaska and Canada, 2017. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1646
    Graphic Preview Description Example of AirSWOT radar products in ABoVE Projection at 3.6 m2 resolution, for a flight over the ABoVE C grid Ch065v034. Left: Shape for backscatter image. Middle: Magnitude image. Right: Elevation product image.
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/ABoVE_AirSWOT_Radar_Data_Fig1.png
    Harvest Object Id bb22dc1d-9e7e-4bc1-b339-c47030ea5f97
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1646
    Metadata Type geospatial
    Old Spatial -149.83 46.85 -98.63 70.49
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 8d2a21a69dd13545f3df874446716afc4a698dc3a5868c7e1f31bb78e3e89ab0
    Source Schema Version 1.1
    Spatial
    Temporal 2017-07-08T00:00:00Z/2017-08-17T23:59:59Z

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