Sea state uncertainty from a triple collocation analysis of observations during the Sentinel-6 Michael Freilich – Jason-3 tandem phase
Event: 2022 Ocean Surface Topography Science Team Meeting
Session: Science I: Climate data records for understanding the causes of global and regional sea level variability and change
Presentation type: Type Poster
Contribution: PDF file
Further, the 12 month tandem phase potentially offers relatively abundant collocated data that permits analyses of the relative uncertainty contributions conditional upon sea state. In particular we start by examining swell dominated regions and propose a methodology based upon exploiting recent multivariate sea state observations from Sentinel-1 imaging SAR, recently produced by the European Space Agency Sea State Climate Change Initiative (CCI). Traditionally, in the absence of global in situ or remote observations, a reanalysis product could be employed to identify swell events. However, these new high quality sea state observations, that include swell wave height and wave period, facilitate a multivariate intercomparison with reanalysis data. Preliminary intercomparison has already suggested discrepancy in wave period. We summarize some recent results and describe how this approach directs the geographic focus of the Sentinel-6 MF – Jason-3 tandem phase triple collocation study.