Description
The Sensory Geophysical Data Record (SGDR) files contain full accuracy altimeter data, with a high precision orbit (accuracy ~1.5 cm). The instruments on Jason-1 make direct observations of the following quantities: altimeter range, significant wave height, ocean radar backscatter cross-section (a measure of wind speed), ionospheric electron content (derived by a simple formula), tropospheric water content, mean sea surface, and position relative to the GPS satellite constellation. The SGDR contain all relevant corrections needed to calculate the sea surface height. It also contains the 20Hz waveforms that are required for retracking. The SGDR is an expert level product, if you do not require the waveforms then the GDR/GPN or GPR will be more suited for your needs.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| View this dataset's user's guide | Jason-1 User Guide | Open resource | |
| View documentation related to this dataset | HTML | Jason-1 cycle start list | Open resource |
| View this dataset's documented anomalies | HTML | Jason-1 maneuvers | Open resource |
| View this dataset's documented anomalies | HTML | Jason-1 safeholds and known data outages | Open resource |
| Download this dataset through a directory map | HTML | Browse and download granules over HTTPS using the virtual directories | Open resource |
| View this dataset's data recipes | HTML | Generic data readers | 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 |
| Download this dataset through Earthdata Search | HTML | Browse granule search results in Earthdata Search | Open resource |