SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave, Version 2.0

The SWOT Level 2 KaRIn Low Rate Sea Surface Height Windwave 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).
This collection is a sub-collection of its parent: https://podaac.jpl.nasa.gov/dataset/SWOT_L2_LR_SSH_2.0 It provides the "Windwave" file from each L2 SSH product, which includes significant wave height (SWH), normalized radar cross section (NRCS or backscatter cross section or sigma0), wind speed derived from sigma0 and SWH, model information on wind and waves, and quality flags.

Data and Resources

Additional Info

Field Value
Maintainer undefined
Last Updated April 1, 2025, 00:12 (UTC)
Created April 1, 2025, 00:12 (UTC)
accessLevel public
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citation Surface Water Ocean Topography (SWOT). 2024-02-01. SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave. Version 2.0. SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave, Version 2.0. Jet Propulsion Laboratory. Archived by National Aeronautics and Space Administration, U.S. Government, JPL NASA. https://doi.org/10.5067/SWOT-SSH-2.0. https://swot.jpl.nasa.gov/.
creator Surface Water Ocean Topography (SWOT)
graphic-preview-description Thumbnail
graphic-preview-file https://podaac.jpl.nasa.gov/Podaac/thumbnails/SWOT_L2_LR_SSH_2.0.jpg
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harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2799465507-POCLOUD
issued 2022-07-21
landingPage https://doi.org/10.5067/SWOT-SSH-2.0
language {en-US}
metadata_type geospatial
modified 2022-07-21
programCode {026:001}
publisher NASA/JPL/PODAAC
release-place Jet Propulsion Laboratory
resource-type Dataset
series-name SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave
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temporal 2022-12-16T00:00:00Z/2024-03-27T00:00:00Z
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