Shailen Desai (JPL, USA); Chun Sik Chae (JPL, USA)

Here we describe recent updates to the wet tropospheric path delay correction on Jason-2 and Jason-3 that improve the long term stability of the product and reduce uncertainties in the global mean sea level trend. These updates were based on an inter-comparison with SSMI radiometers and independent re-analysis models. While the changes are relatively small, they made improve closure of the sea level budget after 2016.

We will also provide an update on the performance of the Sentinel-6A radiometer in terms of long term stability, which is enabled by the new supplemental calibration system on-board. We will also show new results for the performance in coastal regions that are enabled by the new High Resolution Microwave Radiometer (HRMR).

Finally, we will describe the radiometer currently in development for the CRISTAL mission and discuss new cryospheric applications possible with the combination of sensors on this mission.