SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product, Version C

The SWOT Level 2 KaRIn Low Rate Sea Surface Height 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). 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). The sea surface height data are also provided on a finer 250x250 m2 "native" grid with minimal smoothing applied (Unsmoothed).

Please note that this collection contains SWOT Version C science data products.

This dataset is the parent collection to the following sub-collections:

https://podaac.jpl.nasa.gov/dataset/SWOT_L2_LR_SSH_Basic_2.0

https://podaac.jpl.nasa.gov/dataset/SWOT_L2_LR_SSH_WindWave_2.0

https://podaac.jpl.nasa.gov/dataset/SWOT_L2_LR_SSH_Expert_2.0

https://podaac.jpl.nasa.gov/dataset/SWOT_L2_LR_SSH_Unsmoothed_2.0

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated November 5, 2026, 08:16 (UTC)
Created April 1, 2025, 19:19 (UTC)
Identifier 10.5067/SWOT-SSH-2.0
Modified 2026-11-02T22:15:59Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id a31f0e7a-cf9c-4994-adb2-5344cb01f381
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher Jet Propulsion Laboratory;NASA/JPL/PODAAC
resource-type Dataset
source_datajson_identifier true
source_hash 8cbe9a34470c9e4e9d249d1bce6b0a5c4552f74114f0755ec1194eca1e0d99c7
source_schema_version 1.1
spatial ["CARTESIAN", [{"NorthBoundingCoordinate": 90.0, "WestBoundingCoordinate": -180.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]