Abstract's details
NEW CNES CLS 2019 MEAN SEA SURFACE: FIRST VALIDATION.
Event: 2019 Ocean Surface Topography Science Team Meeting
Session: The Geoid, Mean Sea Surfaces and Mean Dynamic Topography
Presentation type: Poster
A new Mean Sea Surface model, the CNES_cLS_2019 MSS, has been determined. It is based on the integration of more than 25 years of altimetric data, using more than 10 altimeters from the historical Topex/Poseidon to the in-flight Sentienl-3A mission, including repetitives and geodetic/drifting orbits. Like the previous 2015 version this new determination is focused on the fallowing points of improvement which remains a permanent challenge:
• the correction of ocean variability, especially for wavelengths between 50 and 200 km.
• the accuracy of altimetric data and therefore of the MSS near the coast, particularly since MSS can serve as a reference for studying the coastal vulnerability.
• a fine-tuned determination of the Arctic zone, which is a major indicator of climate change.
• a most accurate mapping of the finest topographic structures for wavelengths shorter than 50 km, in preparation of a new reference for the upcoming SWOT mission.
We therefore propose a synthesis of analyzes of these different aspects in order to quantify the improvements of this new MSS compared to the other existing models.
Back to the list of abstract• the correction of ocean variability, especially for wavelengths between 50 and 200 km.
• the accuracy of altimetric data and therefore of the MSS near the coast, particularly since MSS can serve as a reference for studying the coastal vulnerability.
• a fine-tuned determination of the Arctic zone, which is a major indicator of climate change.
• a most accurate mapping of the finest topographic structures for wavelengths shorter than 50 km, in preparation of a new reference for the upcoming SWOT mission.
We therefore propose a synthesis of analyzes of these different aspects in order to quantify the improvements of this new MSS compared to the other existing models.