Global Ocean Data Quality Assessment of SARAL/AltiKa

Pierre Prandi (CLS, France)


Vincent Pignot (CLS, France); Michaël Ablain (CLS, France); Nicolas Picot (CNES, France); Jean-Damien Desjonquères (CNES, France)

Event: 2015 Ocean Surface Topography Science Team Meeting

Session: Regional and Global CAL/VAL for Assembling a Climate Data Record

Presentation type: Type Oral

The SARAL mission was successfully launched on February, 25th 2013 and is delivering high quality sea surface topography measurements since. For more than two and a half years, data quality assessment of OGDR, IGDR and GDR data is performed at CLS, as part of the CNES SALP project.

We present the current Cal/Val status of the SARAL/AltiKa mission over ocean, mainly from GDR data using Patch 2 version. The main data quality metrics are presented (data availability, SSH differences at cross-overs) and demonstrate the excellent mission performance. We also introduce an error budget for the mission.

Since last OST/ST, the spacecraft has experienced several special events: safe-hold mode, failure of a reaction wheel, 10+ km shift from the nominal ground track… These events are reviewed and we show that they have had a limited impact on the overall mission performance.

Oral presentation show times:

RoomStart DateEnd Date
Grand Ballroom 1 Wed, Oct 21 2015,16:45 Wed, Oct 21 2015,17:00
Pierre Prandi