Modeling Groundwater Depletion at Regional and Global Scales: Present State and Future Prospects |
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Authors: | Yoshihide Wada |
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Institution: | 1.NASA Goddard Institute for Space Studies,New York,USA;2.Center for Climate Systems Research,Columbia University,New York,USA;3.Department of Physical Geography, Faculty of Geosciences,Utrecht University,Utrecht,The Netherlands |
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Abstract: | Except for frozen water in ice and glaciers, groundwater is the world’s largest distributed store of freshwater and has strategic importance to global food and water security. In this paper, the most recent advances quantifying groundwater depletion (GWD) are comprehensively reviewed. This paper critically evaluates the recently advanced modeling approaches estimating GWD at regional and global scales, and the evidence of feedbacks to the Earth system including sea-level rise associated with GWD. Finally, critical challenges and opportunities in the use of groundwater are identified for the adaption to growing food demand and uncertain climate. |
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