Multi-Mission Optimally Interpolated Sea Surface Salinity Global Monthly Dataset V2

Published by NASA/JPL/PODAAC;UHI/SOEST/IPRC | National Aeronautics and Space Administration | Metadata Last Checked: January 17, 2026 | Last Modified: 2026-01-13

This is a level 4 product on a 0.25-degree spatial and monthly temporal grid. The product is the monthly mean of the level 4 OISSS dataset using three satellite missions: the Aquarius/SAC-D, Soil Moisture Active Passive (SMAP) and Soil Moisture and Ocean Salinity (SMOS) using Optimal Interpolation (OI) with a 7-day decorrelation time scale. This dataset is produced by the Earth and Space Research (ESR), Seattle, WA and the International Pacific Research Center (IPRC) of the University of Hawaii at Manoa in collaboration with the Remote Sensing Systems (RSS), Santa Rosa, California. More details can be found in the users guide.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.5067/SMP20-4UMCS
landingPage	https://podaac.jpl.nasa.gov/CitingPODAAC
programCode	[ "026:000" ]
spatial	["CARTESIAN",[{"NorthBoundingCoordinate":90.0,"WestBoundingCoordinate":-180.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-90.0}]]
temporal	2011-08-01/2011-08-01
theme	[ "Earth Science" ]