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    • Jason-1 SGDR version E NetCDF

    Metadata Updated: April 11, 2025

    The Sensory Geophysical Data Record (SGDR) files contain full accuracy altimeter data, with a high precision orbit (accuracy ~1.5 cm). The instruments on Jason-1 make direct observations of the following quantities: altimeter range, significant wave height, ocean radar backscatter cross-section (a measure of wind speed), ionospheric electron content (derived by a simple formula), tropospheric water content, mean sea surface, and position relative to the GPS satellite constellation. The SGDR contain all relevant corrections needed to calculate the sea surface height. It also contains the 20Hz waveforms that are required for retracking. The SGDR is an expert level product, if you do not require the waveforms then the GDR/GPN or GPR will be more suited for your needs.

    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 May 30, 2023
    Metadata Updated Date April 11, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date April 11, 2025
    Publisher NASA/JPL/PODAAC
    Maintainer
    Identifier C1940472420-POCLOUD
    Data First Published 2014-03-17
    Language en-US
    Data Last Modified 2025-04-01
    Category JASON-1, geospatial
    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 36cfa76c-6c56-4a0b-924e-b212190b0752
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1940472420-POCLOUD.html
    Metadata Type geospatial
    Old Spatial -180.0 -66.15 180.0 66.15
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash bc3780a73b8a97e84802bb72ab8bf4bd8cdc91f6d96eca37880e43a36b52bcde
    Source Schema Version 1.1
    Spatial
    Temporal 2002-01-14T12:00:00Z/2012-03-03T12:59:12Z

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