18 December 2014
Measurements of salt held in surface seawater are becoming ever-more important for us to understand ocean circulation and Earth's water cycle. ESA's SMOS mission is proving essential to the quest.
The Soil Moisture and Ocean Salinity satellite, SMOS, is monitoring changes in the amount of water held in the surface layers of soil and concentrations of salt in the top layer of seawater - both of which are a consequence of the continuous exchange of water between the oceans, the atmosphere and the land.
Launched in 2009, SMOS has provided the longest continuous record of sea-surface salinity measurements from space.
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