Plymouth is one of England’s historic port cities, a place from which sailors, soldiers and scientists have set off to sea for centuries. Today there’s a new twist to the tale though, as oceanographers now have a huge fleet of satellites in space to add to their list of high quality data sources in order to study and understand our seas.

The field of satellite ocean observation is due to get a boost later this year as ESA’s Sentinel-3 will join the fleet of Earth observers already in orbit. It’s part of Europe’s Copernicus programme, and heralds a new era in ocean observation by offering an uninterrupted flow of data from its speedy polar orbit, now and well into the future.

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