Credit: NASA PO.DAAC.

Animation of sea surface salinity from 31 March 2015 to 29 February 2020 based on the 8-day running mean version 4.3 Level 3 NASA Soil Moisture Active Passive (SMAP) dataset from JPL.

The dataset can be accessed from the PO.DAAC Portal.
doi: 10.5067/SMP43-3TPCS

The original movie can be found on the PO.DAAC website.