First SMOS and Aquarius space–time sea surface salinity (SSS) variability estimates
Overall agreement on SSS scales from different SMOS and Aquarius products
Strong anisotropy in Tropical Atlantic SSS, with seasonally dominated variability
Larger scales of SSS anomaly in Sargasso Sea, and preserved anisotropy in Tropics
Longer spatial scales from Aquarius products than SMOS in the Southern Atlantic