This includes maintaining the Argo array, continuing salinity satellite missions, and, especially, expanding satellite constellations to observe the entire global hydrological cycle, including processes over the ocean, in the cryosphere, on land, and in the atmosphere. (eos.org)
This is known as the global hydrological cycle. (sciencedaily.com)
The prize is awarded for «ground - breaking work that provides a powerful estimate of the effects of climate change on the global hydrological cycle, with a clear explanation of the global water budget.» (climatecommunication.org)