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    • Delta-X: AirSWOT Level 1B Interferogram Products in Radar Coordinates, 2021

    Metadata Updated: April 10, 2026

    This dataset contains AirSWOT interferogram products collected during the 2021 Delta-X Campaign over the Atchafalaya and Terrebonne Basins of the Mississippi River Delta, Louisiana, USA from 2021-03-26 to 2021-04-18 (Spring) and 2021-08-21 to 2021-09-12 (Fall). AirSWOT uses near-nadir wide-swath Ka-band radar interferometry to measure water-surface elevation and produce continuous gridded elevation data. AirSWOT elevation data is useful for calibrating elevation and slopes along the main channels, as well as tying observations to open ocean tidal conditions. The AirSWOT Level 1B (L1B) data products represent interferogram data in the radar coordinate system, not in georeferenced map coordinates. This is an earlier stage of data processing which is used to generate the later Level 2 and Level 3 data products which will contain georeferenced water heights and water height profiles for river channels in each basin. The data are provided in binary and text file formats.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date April 11, 2025
    Metadata Updated Date April 10, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date April 10, 2026
    Publisher ORNL_DAAC
    Maintainer
    Identifier 10.3334/ORNLDAAC/1996
    Data Last Modified 2026-04-06
    Category Earth Science
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 1899933d-2f5e-4677-8641-af366433d28b
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    License https://www.usa.gov/government-works
    Old Spatial {"WestBoundingCoordinate":-91.5378,"NorthBoundingCoordinate":29.7961,"EastBoundingCoordinate":-90.5817,"SouthBoundingCoordinate":29.0711},"CARTESIAN"
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 4899d352e20b7cec7c070041c3bb6778e40301a2f49e654631f5f9544db6a604
    Source Schema Version 1.1
    Spatial
    Temporal 2021-03-26/2021-09-12

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