Cecile Kocha (CLS, France); Malek Ghantous (CLS, France); Annabelle Ollivier (CLS, France); Isabelle Pujol (CLS, France); Gerald Dibarboure (CNES, France)

Although CFOSAT is dedicated to wind and wave characterization the Ku altimeter on board has the capacity of providing and Sea level measurements, relevant to enrich the DUACS (Data Unification and Altimeter Combination System) Sea Level Anomaly products for the benefit of the Copernicus Marine Service users. With an orbit reaching 82° latitude, it could in particular help to compensate the loss of current nadir missions at low and high latitudes.
The short and long wavelength errors of CFOSAT Sea Level Anomaly were investigated and specific procedures, based on a multimission approach, were implemented in order to correct from the poor orbit accuracy. Once homogenized to the other missions, the CFOSAT provide an interesting set of Sea Level, with a good quality at mesoscale. Across track geostrophic current were derived providing an unprecedented global colocation of wave spectra and currents. Based on these studies, a Level3 demonstration product were produced and will be available on Aviso.