Array · collection · 2025
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Expert, Version D
Listed in NASA Earthdata CMR
The SWOT Level 2 KaRIn Low Rate Sea Surface Height Expert Data Product from the Surface Water Ocean Topography (SWOT) mission provides global sea surface height and significant wave height observations derived from low rate (LR) measurements from the Ka-band Radar Interferometer (KaRIn).
Description
SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023.
After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. The L2 sea surface height data product is distributed in one netCDF-4 file per pass (half-orbit) covering the full KaRIn swath width, which spans 10-60km on each side of the nadir track. Sea surface height, sea surface height anomaly, wind speed, significant waveheight, and related parameters are provided on a geographically fixed, swath-aligned 2x2 km2 grid (Basic, Expert, Windwave).
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The sea surface height data are also provided on a finer 250x250 m2 "native" grid with minimal smoothing applied (Unsmoothed). This collection is a sub-collection of its parent: podaac.jpl.nasa.gov/dataset/SWOT_L2_LR_SSH_D It provides the "Expert" file from each L2 SSH product, which contain all related variables and is intended for expert users.
Links
Get the data
- github.com /podaac/data-subscriber ↗
This dataset can be downloaded using the podaac-data-subscriber (the recommended tool for bulk downloading PO.DAAC data). It is a Python package for downloading one or many files using the command lin
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C3233942272-POCLOUD ↗
Browse granule search results in Earthdata Search
download · from NASA CMR
- HTTPS endpoint for data browse and download cmr.earthdata.nasa.gov/virtual-directory/collections/C3233942272-POCLOUD ↗
download · from NASA CMR
Where it is published
- DOI doi.org/10.5067/swot-ssh-d ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- SWOT Mission Page at PO.DAAC podaac.jpl.nasa.gov/swot ↗
documentation · from NASA CMR
- SWOT Mission Page at AVISO aviso.altimetry.fr/en/missions/current-missions/swot.html ↗
documentation · from NASA CMR
- Data Use and Citation Guidelines podaac.jpl.nasa.gov/CitingPODAAC ↗
documentation · from NASA CMR
- SWOT User Handbook archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/D-109532_SW… ↗
documentation · from NASA CMR
- SWOT Mission Page at NASA nasa.gov/swot ↗
documentation · from NASA CMR
- SWOT Mission Page at JPL jpl.nasa.gov/missions/surface-water-and-ocean-topography-swot ↗
documentation · from NASA CMR
- Product Description Document (PDD) archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/pdd/D-56407… ↗
documentation · from NASA CMR
- Algorithm Theoretical Basis Document (ATBD) archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/atbd/D-1055… ↗
documentation · from NASA CMR
- Release Note archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/web-misc/swot_mission_docs/SWOT_Versio… ↗
documentation · from NASA CMR
- SWOT Mission Page swot.jpl.nasa.gov ↗
project · from NASA CMR
- Thumbnail podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_L2_LR_SSH_D.jpg ↗
preview image · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3233942272-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- opendap.earthdata.nasa.gov ↗
This dataset can be accessed with the Open-source Project for a Network Data Access Protocol (OPeNDAP) API framework. This service enables variable and dimensional subsetting. The URL redirects to a p
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3233942272-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- AMR · Doppler Orbitography and Radiopositioning Integrated by Satellite · Global Positioning System Payload · Jason-class Altimeter · Ka-band Radar Interferometer · Laser Retroreflector Array · Sea Surface Height · Significant Wave Height · Surface Water Ocean Topography
- Inferred from text
- Hydrology 69%
Related
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Basic, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Unsmoothed, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product - WindWave, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product - Basic, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product - Expert, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product - Unsmoothed, Version D
- Possibly the same asSWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product, Version D
Provenance · 1 source records, 19 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3233942272-POCLOUD | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3707 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (69%) |
| concepts[instrument].gcmd_instrument:amr | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:doris | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:gpsp | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:jason-class-altimeter | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:karin | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:lra | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-waves/significant-wave-height | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/sea-surface-topography/sea-surface-height | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:swot | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |