Salt is essential. Circulating through our bodies and our seas, it impacts the health of people and the planet. Salt dissolved in seawater – measured as salinity – drives currents that distribute heat and carbon around the globe. So, salt not only preserves our food, it helps to preserve our climate by contributing to global ocean circulation.

Earth is an ocean planet. Key water cycle processes – precipitation and evaporation – mostly occur over the ocean. Thus, monitoring sea surface salinity patterns provides important clues about changes in our environment.

NASA observes salinity. Merging data from satellites and other instruments, our mission is to better understand ocean circulation, the water cycle, and climate.

Upcoming Events »

2018 Ocean Salinity Science Conference

Latest News »

IPRC/SOEST Optimally Interpolated Sea Surface Salinity (OISSS) Aquarius V5.0 Dataset Released
Aquarius Ancillary Celestial Sky Microwave Emission Map Dataset Released
SMAP Sea Surface Salinity V2.0 70km Dataset from Remote Sensing Systems Released

Recent Publications »

A Comparison of Satellite-Derived Sea Surface Salinity and Salt Fluxes in the Southern Ocean
River Plume Fronts and Their Implications for the Biological Production of the Bay of Bengal, Indian Ocean
Water Vapor Transfer and Near-Surface Salinity Contrasts in the North Atlantic Ocean