The use of satellite data in the detailed study and precise measurement of the Earth's geoid in order to improve our understanding both of the Earth's interior, and dynamic topography of the world's oceans.
ESA's Earth satellites are stars
21 June 2013
The first three Earth Explorer satellites have surpassed their original objectives, demonstrating the versatility of these collaborative missions.
The three missions in orbit are CryoSat, GOCE and SMOS. Over the past few years they have been providing new information on Earth's cryosphere, gravity and soil moisture and ocean salinity, respectively, but there have also been several unexpected achievements.
Some of these were outlined at the Paris Air and Space Show this week by Johnny Johannessen, Director General of the Nansen Environmental and Remote Sensing Center and former Chairman of ESA's Science Advisory Committee.
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