SWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - GDR

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. 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. This collection is a sub-collection of its parent: https://podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_2.0

Data e Risorse

Campo Valore
accessLevel public
bureauCode {026:00}
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identifier C2799465509-POCLOUD
issued 2022-06-28
landingPage https://doi.org/10.5067/SWOT-NALT-GDR-2.0
language {en-US}
metadata_type geospatial
modified 2025-03-31
old-spatial -180.0 -77.6 180.0 77.6
programCode {026:001}
publisher NASA/JPL/PODAAC
resource-type Dataset
source_datajson_identifier true
source_hash e4ff3c25f304a912de8cef7f4cd69f300e214c84c098b73c302f0d71b072cf71
source_schema_version 1.1
temporal 2022-12-16T00:00:00Z/2024-03-27T00:00:00Z
theme {SWOT,geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • earth-science
  • ocean-waves
  • oceans
  • sea-surface-topography
isopen False
license_id notspecified
license_title License not specified
maintainer undefined
maintainer_email cmr-support@earthdata.nasa.gov
metadata_created 2025-09-23T18:34:01.646477
metadata_modified 2025-09-23T18:34:01.646484
notes 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. 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. <br>This collection is a sub-collection of its parent: https://podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_2.0
num_resources 12
num_tags 12
title SWOT Level 2 Nadir Altimeter Geophysical Data Record with Waveforms - GDR