Jason-1 along-track Altimetry

The POSEIDON-2 altimeter is the main instrument on the Jason-1 mission. Derived from the POSEIDON-1 altimeter on TOPEX/Poseidon, it measures sea level, wave heights and wind speed. It operates at two frequencies and is also able to estimate atmospheric electron content.
This dataset has along-track sea surface height anomalies for the Jason-1 mission. This is updated (usually) every 10-20 days or so, and is typically a couple of months behind.
The data have been corrected for "path delay" effects (wet- and dry-troposphere, ionosphere, sea-state bias), for tides, and for the inverse barometer effect.