NASA has a mind-blowing plan to map rising sea levels from space

The Sentinel-6 will see details that previous sea level missions couldn’t. Existing satellites can track large phenomena stretching thousands of miles, such as the Gulf Stream and weather patterns like El Niño and La Niña. But smaller sea-level fluctuations near coastlines exceed their abilities. Sentinel-6’s higher resolution measurements will enable researchers to see finer, more complicated ocean features, especially near shorelines. It will also offer faster data turnarounds—collecting, processing, and releasing data within three hours, down from months and years. The data can be used to more quickly and accurately predict, map, and 3D model coastline changes; weather, such as hurricane intensity; ocean current fluctuations, which dissipate climate energy; and ocean topography and circulation, as movement of heat, salt, pollution, and nutrients impacts marine ecosystems.

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