Articles | Volume 25, issue 12
Hydrol. Earth Syst. Sci., 25, 6567–6589, 2021
https://doi.org/10.5194/hess-25-6567-2021
Hydrol. Earth Syst. Sci., 25, 6567–6589, 2021
https://doi.org/10.5194/hess-25-6567-2021
Research article
22 Dec 2021
Research article | 22 Dec 2021

Simulation of long-term spatiotemporal variations in regional-scale groundwater recharge: contributions of a water budget approach in cold and humid climates

Emmanuel Dubois et al.

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Short summary
This work demonstrates the relevance of using a water budget model to understand long-term transient and regional-scale groundwater recharge (GWR) in cold and humid climates where groundwater observations are scarce. Monthly GWR is simulated for 57 years on 500 m x 500 m cells in Canada (36 000 km2 area) with limited uncertainty due to a robust automatic calibration method. The increases in precipitation and temperature since the 1960s have not yet produced significant changes in annual GWR.