Abstract's details

New CNES CLS 2022 mean sea surface

Philippe Schaeffer (CLS, France)


Isabelle Pujol (CLS, France); Pierre Veillard (CLS, France); Yannice Faugere (CLS, France); Dagneaux Quentin (CELAD, France); Gerald Dibarboure (CNES, France); Nicolas Picot (CNES, France)

Event: 2022 Ocean Surface Topography Science Team Meeting

Session: The Geoid, Mean Sea Surfaces and Mean Dynamic Topography

Presentation type: Type Oral

Contribution: PDF file


A new Mean Sea Surface model, the CNES_CLS_2021 MSS, has been determined. It is based on the integration of more than 27 years of altimetric data, using more than 10 altimeters from the historical Topex/Poseidon to the in-flight Sentienl-3A/B missions, including ERM and geodetic/drifting orbits. As the previous 2015 version this new MSS is focused on the fallowing points of improvement which remains a permanent challenge:
• the correction of ocean variability, especially for wavelengths lover than 200 km.
• the accuracy of altimetric data and therefore of the MSS near the coast.
• a most accurate mapping of the finest topographic structures until wavelengths shorter than 10 km.
A particular attention was also paid to the Arctic area by combining traditional SSH with leads.
We therefore propose a synthesis of analyzes of these different aspects in order to quantify the improvements of this new MSS compared to other existing MSS.

Oral presentation show times:

Room Start Date End Date
Sala Pasinetti Thu, Nov 03 2022,11:15 Thu, Nov 03 2022,11:30
Philippe Schaeffer