Imaging · dataset · 2025
SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record with Waveforms, Version 2.0
Listed in Open NASA
Description
The SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record (OGDR) with Waveforms Version 1.0 dataset produced by the Surface Water and Ocean Topography (SWOT) mission provides sea surface height, significant wave height and wind speed measurements from the Poseidon-3C nadir altimeter, a Jason-class dual frequency (Ku/C) altimeter. SWOT is a joint mission between NASA and CNES that launched on December 16, 2022.
It aims to measure ocean surface topography with unprecedented resolution and accuracy, as well as map inland water bodies globally. The OGDR dataset consists of discrete measurements along the nadir track with sampling resolutions of approximately 6-km and 300-m at 1Hz and 20Hz, respectively. The data were processed using the onboard DORIS orbit ephemeris, with predicted values for certain auxiliary data and no GIM ionosphere model values.
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The OGDR data are distributed as one file per data downlink in netCDF-4 file format with a nominal latency of < 7 hours.
Links
Get the data
- Google Scholar search results scholar.google.com/scholar?q=10.5067%2FSWOT-NALT-OGDR-1.0 ↗
download · from open nasa gov
- The dataset's project home page swot.jpl.nasa.gov ↗
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- View documentation related to this dataset nasa.gov/swot ↗
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- View documentation related to this dataset jpl.nasa.gov/missions/surface-water-and-ocean-topography-swot ↗
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- View documentation related to this dataset podaac.jpl.nasa.gov/swot ↗
download · from open nasa gov
- View documentation related to this dataset aviso.altimetry.fr/en/missions/current-missions/swot.html ↗
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- Resource github.com/podaac/data-subscriber ↗
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- View this dataset's data citation policy podaac.jpl.nasa.gov/CitingPODAAC ↗
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- Download this dataset through a directory map cmr.earthdata.nasa.gov/virtual-directory/collections/C2296989383-POCLOUD ↗
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- Download this dataset through Earthdata Search search.earthdata.nasa.gov/search/granules?p=C2296989383-POCLOUD ↗
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- Get a related visualization podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_L2_NALT_OGDR_1.0.jpg ↗
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- View this dataset's user's guide archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/pdd/SALP-ST… ↗
download · from open nasa gov
Where it is published
- Open NASA dataset page data.nasa.gov/dataset/swot-level-2-nadir-altimeter-operational-geophysical-d… ↗
landing page · from open nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=955962ab-6447-4ff5-b81e-646255797… ↗
metadata API · from open nasa gov
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
Related
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Open NASA | 955962ab-6447-4ff5-b81e-646255797466 | 15 h ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · open nasa gov | vocabulary-mapper@1.0.0 | keywords['earth-science'] |
| concepts[field].local:field:ocean-atmospheric | mapping · open nasa gov | connector:open_nasa_gov@1.0.0 | |
| created_date | source · open nasa gov | connector:open_nasa_gov@1.0.0 | |
| description | source · open nasa gov | connector:open_nasa_gov@1.0.0 | /notes |
| license_text | source · open nasa gov | connector:open_nasa_gov@1.0.0 | |
| publication_date | source · open nasa gov | connector:open_nasa_gov@1.0.0 | |
| title | source · open nasa gov | connector:open_nasa_gov@1.0.0 | /title |
| updated_date | source · open nasa gov | connector:open_nasa_gov@1.0.0 |