SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record with Waveforms Version 1.0

The SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record (OGDR) with Waveforms Version 1.0 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. 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 OGDR dataset consists of discrete measurements along the nadir track with sampling resolutions of approximately 6-km and 300-m at 1Hz and 20Hz, respectively. The data were processed using the onboard DORIS orbit ephemeris, with predicted values for certain auxiliary data and no GIM ionosphere model values. The OGDR data are distributed as one file per data downlink in netCDF-4 file format with a nominal latency of < 7 hours.

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Additional Info

Field Value
Maintainer undefined
Last Updated March 31, 2025, 14:23 (UTC)
Created March 31, 2025, 14:23 (UTC)
accessLevel public
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citation Surface Water Ocean Topography (SWOT). 2023-06-28. SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record with Waveforms. Version 1.0. SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record with Waveforms Version 1.0. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/JPL/PODAAC. https://doi.org/10.5067/SWOT-NALT-OGDR-1.0. 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_NALT_OGDR_1.0.jpg
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harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2296989383-POCLOUD
issued 2022-06-28
landingPage https://doi.org/10.5067/SWOT-NALT-OGDR-1.0
language {en-US}
metadata_type geospatial
modified 2022-06-28
programCode {026:001}
publisher NASA/JPL/PODAAC
resource-type Dataset
series-name SWOT Level 2 Nadir Altimeter Operational Geophysical Data Record with Waveforms
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source_hash 32516f1189c4e578eb68c72a53b91ae9c3fceb88f13f38237ddbe1defaf320c5
source_schema_version 1.1
spatial -180.0 -77.6 180.0 77.6
temporal 2022-12-16T00:00:00Z/2023-07-03T00:00:00Z
theme {SWOT,geospatial}