Mail Online
September 27, 2011

It is not so much salt of the Earth as all the salt in the sea.

Nasa has created the first ever map ever which shows salinity levels in every ocean on the planet – and it could prove key to understanding everything from global rainfall to ocean currents.

A satellite orbiting round Earth has been taking specialised radio measurements which have been collated together to form an easy to understand map of the globe.

The data will give scientists a new level of understanding about climatic patterns such as how freshwater is moving around, which influences ocean circulation.

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