TOPAZ reanalysis assimilates SSS from BEC-ICM v3.1

Since 14th December 2021, the latest Copernicus Marine Services include an upgraded Arctic reanalysis that covers the years 1991-2020. The new reanalysis assimilates several sources of satellite and in situ observations using an Ensemble Kalman Filter, among which the SMOS Sea Surface Salinity product v3.1 in the period 2013-2020, produced under ESA Arctic+Salinity project. The assimilation of SMOS sea surface salinities had a strong impact on all Arctic marginal seas salinity, with documented improvements in the Nordic Seas, the Greenland Seas and the Beaufort Sea. We are relying on the continuation of the SMOS mission for further updates of this model time series.

The product (Martínez et al., 2022) is freely distributed on:

• the BEC (Barcelona Expert Center) web page http://bec.icm.csic.es/
• with the DOI num-https://doi.org/10.5194/essd-14-307-2022 
• data can be downloaded from the FTP service: http://bec.icm.csic.es/bec-ftp-service/
• In Copernicus Marine Service