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    • Pre-Delta-X: L2 AirSWOT Water Surface Elevations, Atchafalaya Basin, LA, USA, 2016

    Metadata Updated: December 6, 2023

    This dataset provides water surface elevations over the Wax Lake Delta in the Atchafalaya Basin in coastal Louisiana, USA, in May 2015. These Level 2 (L2) data were collected by AirSWOT, an airborne instrument employing near-nadir wide-swath Ka-band radar interferometry to measure water-surface elevation and produce continuous gridded elevation data at 3.6 m resolution. Along with elevation estimates, the dataset includes measures of estimation errors, sensitivity, incidence angle, backscatter, and interferometric correlation. For this application, in situ water level data were added into the AirSWOT phase calibration procedure. These L2 data consist of a set of rasters in Universal Transverse Mercator (UTM) map coordinates for each of the 39 AirSWOT flight lines. These elevation data were later used for calculating elevation and slopes along the main channels in this wetland system, as well as tying observations to ocean tidal conditions.

    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

    Map of water surface elevation estimates collected by AirSWOT on May 9, 2015 over the Atchafalaya River Basin in coastal Louisiana, USA. The two USGS stations used as ground control points for AirSWOT calibration are annotated. Source: Denbina et al., 2019

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2025125582-ORNL_CLOUD
    Data First Published 2021-04-03
    Language en-US
    Data Last Modified 2023-06-12
    Category Delta-X, 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 Denbina, M.W., M. Simard, E. Rodriguez, X. Wu, and C. Michailovsky. 2021. Pre-Delta-X: L2 AirSWOT Water Surface Elevations, Atchafalaya Basin, LA, USA, 2016. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1818
    Graphic Preview Description Map of water surface elevation estimates collected by AirSWOT on May 9, 2015 over the Atchafalaya River Basin in coastal Louisiana, USA. The two USGS stations used as ground control points for AirSWOT calibration are annotated. Source: Denbina et al., 2019
    Graphic Preview File https://daac.ornl.gov/DELTAX/guides/PreDeltaX_L2_AirSWOT_Fig1.jpg
    Harvest Object Id dba9baa0-a40b-407c-9a3d-b8f74c85ce2e
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1818
    Metadata Type geospatial
    Old Spatial -91.6 28.98 -90.45 29.87
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 9309db037b9af2036869b698d7d9c383dc8c6451b1401cd6c4c33dad36108c42
    Source Schema Version 1.1
    Spatial
    Temporal 2015-05-08T11:02:30Z/2015-05-11T08:47:18Z

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