Bruno Lucas (EUMETSAT, Germany); Salvatore Dinardo (HE Space Operations GmbH, Germany); Carolina Nogueira Loddo (EUMETSAT, Germany)

Sentinel-3 is part of a series of Sentinel satellites responsible for taking care of a continuous ‘health check’ of the Earth planet under the umbrella of the Copernicus program. The Copernicus program will launch four Sentinel-3 satellites (from A to D) to achieve this goal from 2016 to 2035. EUMETSAT’s Marine Centre is responsible for the processing of the Sentinel-3 science data in the marine environment.

Since Spring 2016 Sentinel-3A’s SRAL Synthetic Aperture Radar Altimeter has been successfully contributing to the continuity of the sea level climate data record.

This presentation will provide an overview of the latest evolutions of the Sentinel-3 SRAL processing, the relations between Sentinel-3A and -3B processing, and the strategy that EUMETSAT has adopted to provide the consistent long-term data set while continuing to evolve and improve the processing algorithms and standards.

The latest reprocessing “Spring 2019” is the baseline for a quality analysis of the Sentinel-3A Marine Centre data in a multi-mission setting. The latter shall allow for revisiting the status of the Jason-3 and Jason-2, in comparison with Sentinel-3A. To this goal this presentation aims at: providing multi-mission time series of the main climate records (sea level, significant wave height and wind speed); quantifying cross-overs (mono- and multi- mission); as well as provide over 3 years of global assessment of SAR mode versus Pseudo-LRM.