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

Annabelle Ollivier (CLS, France)

CoAuthors

Sabine Philipps (CLS, FRANCE); Alexandre Couhert (CNES, France); Nicolas Picot (CNES, France)

Event: 2015 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 2014, a large panel of evolutions was developed in order to be integrated in the GDR-E orbit standards. They had been qualified and compared to the previous GDR-D orbit standards for Jason-2 mission.
During 2015, the final version of the POE-E orbit standards is made available for Jason1, Jason-2 and Cryosat-2.

This poster synthesizes the final quality of these orbits, 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:

RoomStart DateEnd Date
Grand Ballroom Foyer Thu, Oct 22 2015,11:00 Thu, Oct 22 2015,18:00
Annabelle Ollivier
CLS
France
aollivier@cls.fr