Continental Scale Coupled Groundwater Surface Water Modelling
AGUFM(2019)
摘要
Groundwater accounts for almost one third of the world's fresh water. Lakes and wetlands account for an additional 0.25%, but are intimately linked with groundwater systems. Both modern and past lake levels record changes in regional groundwater tables. The evolution of water table depth through time records changes in the total terrestrial water storage in response to changing climate and topography. To study terrestrial water balance through the past and present, we develop and implement a coupled groundwater-surface-water model that can rapidly compute water-table fluctuations on a continental scale over time scales from years to thousands of years.
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