Assessment of SARAL sea surface height accuracy for global mean sea level estimates
Event: 2014 SARAL/AltiKa workshop
Session: Calval over ocean / In situ Calval
Presentation type: Type Poster
Contribution: not provided
The SARAL/AltiKa mission provides the long-awaited extension to the ERS/EnviSat 35-day repeat sea surface height (SSH) time series. In this presentation we assess the accuracy of the SSH measurements from the first year of operation via independent crossover and collinear residual analyses and with respect to coincident Jason-2 measurements. In an effort to provide consistency with the TOPEX/Poseidon, Jason-1, and Jason-2 Climate Data Record, we have generated and applied GSFC std1401 replacement orbits and non-parametric sea state bias models, and report accuracy improvement metrics. Verification results of instrument stability required for credible global mean sea level trend estimates are reported.