Question 5

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Watershed Hydrology

Where, when, and why will the Arctic become wetter or drier, and what are the implications for climate forcing?

Watershed hydrology determines the spatial distribution and temporal dynamics of soil saturation and inundation and, in turn, surface and subsurface hydrological and biogeochemical cycling and local- to regional-scale energy balance. Observations have informed key model improvements in prediction of past, present, and future distributions of snow, soil moisture and inundation, and surface and subsurface water flow across the Arctic landscape.