Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

  • Feedback

    • SWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - SSHA, Version 1.0

    Metadata Updated: April 9, 2026

    Nadir Altimeter Geophysical Data Record (GDR) products similar to those from ongoing nadir altimeter missions such as Jason-3. Provide sea surface height, significant wave height and wind speed measurements from the nadir altimeter. GDR using restituted auxiliary data Uses the Precise Orbit Ephemeris (POE). Available with latency of < 90 days. Discrete measurements at nadir for each half orbit, along the ground track. Available in netCDF-4 file format.

    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 May 13, 2025
    Metadata Updated Date April 9, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 13, 2025
    Metadata Updated Date April 9, 2026
    Publisher NASA/JPL;NASA/JPL/PODAAC
    Maintainer
    Identifier 10.5067/SWOT-NALT-GDR-1.0
    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 b9133571-570f-45cc-8880-cfbf58c44a8f
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    License https://www.usa.gov/government-works
    Old Spatial "CARTESIAN",{"WestBoundingCoordinate":-180.0,"NorthBoundingCoordinate":77.6,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-77.6}
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 19da7da85eaa7f54b86c02dc6d038c007659f9b5d0eed3157142fa2d87e0ca3d
    Source Schema Version 1.1
    Spatial

    Didn't find what you're looking for? Suggest a dataset here.