Harmony

Harmony is ESA's 10th Earth Explorer mission. The two satellites will orbit Earth in tandem with a Copernicus Sentinel-1 satellite, the configuration of which changes over the course of Harmony’s life in orbit. In the various configurations, the Harmony satellites’ synthetic aperture radar instruments receive the Sentinel-1 radar signals that bounce back, or ‘backscatter’, from Earth’s surface. At the same time, Harmony’s thermal-infrared instruments provide complementary observations of the sea surface as well as the position and motion of clouds above it.