Imaging · dataset · 2025
SWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - SGDR
Listed in NASA Data Portal
The SWOT Level 2 Nadir Altimeter Geophysical Data Record (GDR) with Waveforms 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.
Description
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 GDR dataset consists of discrete measurements for each half orbit along the ground track with sampling resolutions of approximately 6-km and 300-m at 1Hz and 20Hz, respectively. The data were processed using restituted auxiliary data and the Precise Orbit Ephemeris (POE). The data are available with latency of This collection is a sub-collection of its parent: podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_2.0
Links
Get the data
- Google Scholar search results scholar.google.com/scholar?q=10.5067%2FSWOT-NALT-GDR-2.0 ↗
download · from data 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 ↗
download · from data nasa gov
- View documentation related to this dataset jpl.nasa.gov/missions/surface-water-and-ocean-topography-swot ↗
download · from data nasa gov
- View documentation related to this dataset podaac.jpl.nasa.gov/swot ↗
download · from data 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/C2799465518-POCLOUD ↗
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- Download this dataset through Earthdata Search search.earthdata.nasa.gov/search/granules?p=C2799465518-POCLOUD ↗
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- Get a related visualization podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_L2_NALT_GDR_2.0.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… ↗
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Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/swot-level-2-nadir-altimeter-geophysical-data-record-w… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=b0b1fb43-4676-4d0c-a8aa-8c604be37… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Geophysics 71%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | b0b1fb43-4676-4d0c-a8aa-8c604be3794e | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3706 | enrichment · data nasa gov | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | vocabulary-mapper@1.0.0 | keywords['earth-science'] |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |