Articles | Volume 25, issue 2
https://doi.org/10.5194/hess-25-787-2021
https://doi.org/10.5194/hess-25-787-2021
Research article
 | 
19 Feb 2021
Research article |  | 19 Feb 2021

Uncertainty of simulated groundwater recharge at different global warming levels: a global-scale multi-model ensemble study

Robert Reinecke, Hannes Müller Schmied, Tim Trautmann, Lauren Seaby Andersen, Peter Burek, Martina Flörke, Simon N. Gosling, Manolis Grillakis, Naota Hanasaki, Aristeidis Koutroulis, Yadu Pokhrel, Wim Thiery, Yoshihide Wada, Satoh Yusuke, and Petra Döll

Data sets

ISIMIP2b EWEMBI (target data set for bias correction of climate data) Stefan Lange https://doi.org/10.5880/pik.2019.004

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Short summary
Billions of people rely on groundwater as an accessible source of drinking water and for irrigation, especially in times of drought. Groundwater recharge is the primary process of regenerating groundwater resources. We find that groundwater recharge will increase in northern Europe by about 19 % and decrease by 10 % in the Amazon with 3 °C global warming. In the Mediterranean, a 2 °C warming has already lead to a reduction in recharge by 38 %. However, these model predictions are uncertain.