Description
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 the parent collection to the following sub-collections:
https://podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_SSHA_2.0
https://podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_GDR_2.0
https://podaac.jpl.nasa.gov/dataset/SWOT_L2_NALT_GDR_SGDR_2.0
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| View this dataset's user's guide | Product Description Document (PDD) | Open resource | |
| Download this dataset through a directory map | HTML | HTTPS endpoint for data browse and download | Open resource |
| Web Page | HTML | Data Subscriber | Open resource |
| View this dataset's data citation policy | HTML | Data Use and Citation Policy | Open resource |
| Get a related visualization | JPG | Thumbnail | Open resource |
| View documentation related to this dataset | HTML | SWOT Mission Page at PO.DAAC | Open resource |
| Google Scholar search results | HTML | Search results for publications that cite this dataset by its DOI. | Open resource |
| Download this dataset through Earthdata Search | HTML | Browse granule search results in Earthdata Search | Open resource |
| View documentation related to this dataset | HTML | SWOT Mission Page | Open resource |
| The dataset's project home page | HTML | SWOT Mission Page | Open resource |
| View documentation related to this dataset | HTML | SWOT Mission Page at AVISO | Open resource |
| View documentation related to this dataset | HTML | SWOT Mission Page at JPL | Open resource |
| View documentation related to this dataset | HTML | SWOT Mission Page at NASA | Open resource |