Assessment of Orbit Quality through the SSH calculation Towards GDR-F orbit standards

Annabelle Ollivier (CLS, France)

CoAuthors

Maeva Dalila (CLS, France); Alexandre Couhert (CNES, France); Nicolas Picot (CNES, France)

Event: 2018 Ocean Surface Topography Science Team Meeting

Session: Precision Orbit Determination

Presentation type: Type Poster

The quality of the orbit ephemerides is crucial for the computation of the Sea Surface Height (SSH). Conversely, analyzing the impact of precise orbit ephemerides on SSH performances enables to describe their impact at different temporal scales and to detect remaining weakness in the orbit solution with a very fine precision.

In 2018, a new update of the orbit standard (POE-F) is getting prepared. A large panel of evolutions were integrated compared to the POE-E orbit standards. They will be made available for Jason-3 as well as for Topex.


This presentation addresses the quality of these orbit standards for altimetric missions and quantifies the improvement of precision in the Sea Surface Height estimation, with respect to the previous standards, using mono-mission and multi-missions diagnosis. In particular, the effect of the different orbit solutions concerning long term trends and inter-annual signatures observed on the Sea Surface Height are addressed. Climatic scales stability is analyzed as well as regional and higher frequency signals.

 

Poster show times:

Room Start Date End Date
Foyer, Salao Nobre & tent Thu, Sep 27 2018,18:00 Thu, Sep 27 2018,20:00
Foyer, Salao Nobre & tent Fri, Sep 28 2018,14:00 Fri, Sep 28 2018,15:00
Annabelle Ollivier
CLS
France
aollivier@cls.fr