Imaging · dataset · 2025
SWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms
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 < 90 days and distributed in netCDF-4 file format.
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This collection is the parent collection to the following sub-collections: podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_SSHA_2.0 podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_GDR_2.0 podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_SGDR_2.0
Links
Get the data
- PDF archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/D-109532_SW… ↗
download · from data nasa gov
- Resource swot.jpl.nasa.gov ↗
download · from data nasa gov
- Resource nasa.gov/swot ↗
download · from data nasa gov
- Resource jpl.nasa.gov/missions/surface-water-and-ocean-topography-swot ↗
download · from data nasa gov
- Resource podaac.jpl.nasa.gov/swot ↗
download · from data nasa gov
- Resource aviso.altimetry.fr/en/missions/current-missions/swot.html ↗
download · from data nasa gov
- Resource cmr.earthdata.nasa.gov/virtual-directory/collections/C2799438313-POCLOUD ↗
download · from data nasa gov
- Resource search.earthdata.nasa.gov/search/granules?p=C2799438313-POCLOUD ↗
download · from data nasa gov
- PDF archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/pdd/SALP-ST… ↗
download · from data nasa gov
- JPEG podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_L2_NALT_GDR_2.0.jpg ↗
download · from data nasa gov
- Resource github.com/podaac/data-subscriber ↗
download · from data nasa gov
- Resource opendap.earthdata.nasa.gov ↗
download · from data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2799438313-POCLOUD.iso19115 ↗
download · from data nasa gov
- Resource podaac.jpl.nasa.gov/CitingPODAAC ↗
download · from data nasa gov
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
- DOI doi.org/10.5067/swot-nalt-gdr-2.0 ↗
DOI / persistent id · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=52336a96-8e9c-414e-bd39-b2233d333… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Geophysics 71%
Related
- Possibly the same asSWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms
- Possibly the same asSWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - SSHA
- Possibly the same asSWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - SGDR
- Possibly the same asSWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - GDR
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | 52336a96-8e9c-414e-bd39-b2233d3332a4 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3706 | enrichment · data nasa gov | taxonomy-embedding@1.0.0 | title+keywords+description (71%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | 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 |