Satellites reveal the power of ocean swell
During recent storms, satellites recorded ocean waves averaging nearly 20 metres high – as tall as the Arc de Triomphe in Paris and the largest ever measured from space. Moreover, satellite data now reveal that ocean swells act as storm ‘messengers’: even though a storm may never make landfall, its swell can travel vast distances and bring destructive energy to distant coastlines.
Published by ESA on 10/08/2025
