Benefits of the Adaptive retracker for improving Jason-3 GMSL estimations

Pierre Thibaut (CLS, France)


Fanny Piras (CLS, France); Hélène Roinard (CLS, France); Adrien Guérou (CLS, France); François Bignalet-Cazalet (CNES, France); Gérald Dibarboure (CNES, France); Nicolas Picot (CNES, France)

Event: 2020 Ocean Surface Topography Science Team Meeting (virtual)

Session: Instrument Processing: Measurement and Retracking

Presentation type: Type Forum

In the frame of the Jason-3 GDR-F reprocessing campaign, the Adaptive retracker solution was implemented together with many other evolutions related to the geophysical corrections. The outputs of the Adaptive solution will be provided in the GDR-F products in addition to the historical MLE-4 solution. An in-depth analysis of the differences between the MLE4 and the Adaptive solutions was performed with a particular attention paid to the instrumental drifts directly impacting the GMSL estimation and its accuracy. The adaptive algorithm is providing a unique and robust reference for GMSL estimation currently done with MLE4 solution. This presentation will show the main outcomes of the study highlighting the benefits of using the Adaptive solution for GMSL estimation. Impacts on other missions (Jason-1, Jason-2, Sentinel-6) will also be addressed.
Pierre Thibaut