Eric Leuliette (NOAA, United States)

The NOAA Laboratory for Satellite Altimetry provides a gridded Level 3 sea level anomaly product publicly available for download through ftp and NOAA’s Coastwatch/Oceanwatch Environmental Research Division's Data Access Program data server (coastwatch.noaa.gov). This is a near real time product available daily, having a global spatial coverage with a ¼ degree spatial resolution, and a temporal coverage of February 2017 through the present. It is a multiple altimeter optimal interpolation sea level anomaly product currently using Jason-2, Jason-3, AltiKa, and Cryosat-2 data. Recently we have been working on evaluating the processing of this product. This has included tuning our error-weighting for the optimal interpolation, which has reduced differences between our grids and AVISO grids.