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 »

Air-Sea Interaction Session at EGU
CLIVAR workshop: Atmospheric Convection and Air-Sea Interactions over the Tropical Oceans

Latest News »

SMAP Sea Surface Salinity (SSS) V3.0 Dataset from Remote Sensing Systems (RSS) Released
JPL Aquarius-CAP Version 5.0 Dataset Released
IPRC/SOEST Optimally Interpolated Sea Surface Salinity (OISSS) Aquarius V5.0 Dataset Released

Recent Publications »

Tracking Sea Surface Salinity and Dissolved Oxygen on a River-influenced, Seasonally Stratified Shelf, Mississippi Bight, Northern Gulf of Mexico
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