The mission
HydroGNSS is the first ESA Scout mission. The two-satellite mission uses a technique called Global Navigation Satellite System reflectometry to measure hydrological climate variables, including soil moisture, freeze–thaw state over permafrost, inundation and wetlands, and biomass.
Embracing the concept of New Space, Scout missions pave the way to innovative science in a quick and agile fashion, and complement ESA’s Earth Explorer research missions.
The launch
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Latest news
Watch: HydroGNSS, IRIDE and Greek mission satellites launch
ESA’s HydroGNSS Scout satellites ready for launch
HydroGNSS twice as good
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Latest images
Surface water over South America from HydroGNSS
Delay Doppler Map from HydroGNSS
All eyes on screen for HydroGNSS
HydroGNSS satellite: Scouting for water
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Latest videos
HydroGNSS uses GNSS reflectometry to ‘scout’ for water
HydroGNSS videos
HydroGNSS mission kit
HydroGNSS documents and publications
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Related links
Introducing HydroGNSS
HydroGNSS: ESA’s first Scout
Scouting for water
Satellites and mission
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Related articles
Earth Observation Programmes