Articles | Volume 17, issue 6
https://doi.org/10.5194/esd-17-1609-2026
https://doi.org/10.5194/esd-17-1609-2026
Research article
 | 
03 Nov 2026
Research article |  | 03 Nov 2026

Global-scale meteorological-to-groundwater drought propagation and the drivers and patterns of multi-year groundwater drought

Saskia Salwey, Sandra Hauswirth, Denise Ruijsch, Barry van Jaarsveld, Jonna van Mourik, and Niko Wanders

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Cited articles

Akl, M., Thomas, B. F., and Clarke, P. J.: Global Groundwater Drought Assessment Revisited: A Holistic Re-Evaluation of the GRACE-Groundwater Drought Index Across Major Aquifers, Water Resour. Res., 61, e2025WR040389, https://doi.org/10.1029/2025WR040389, 2025. a, b, c
Apurv, T. and Cai, X.: Impact of Droughts on Water Supply in U.S. Watersheds: The Role of Renewable Surface and Groundwater Resources, Earth's Future, 8, e2020EF001648, https://doi.org/10.1029/2020EF001648, 2020. a
Ashraf, S., Nazemi, A., and AghaKouchak, A.: Anthropogenic drought dominates groundwater depletion in Iran, Sci. Rep., 11, 9135, https://doi.org/10.1038/s41598-021-88522-y, 2021. a
Athukoralalage, D., Brookes, J., McDowell, R. W., and Mosley, L. M.: Impact of hydrological drought occurrence, duration, and severity on Murray-Darling basin water quality, Water Res., 252, 121201, https://doi.org/10.1016/j.watres.2024.121201, 2024. a
Bäthge, A., Ruz Vargas, C., Lischeid, G., Collenteur, R., Cuthbert, M., Fleckenstein, J., Flörke, M., De Graaf, I., Gnann, S., Hartmann, A., Huggins, X., Moosdorf, N., Wada, Y., Wagener, T., and Reinecke, R.: A Global-Scale Time Series Dataset for Groundwater Studies within the Earth System, Sci. Data, 13, 401, https://doi.org/10.1038/s41597-026-06966-1, 2026. a
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Short summary
This paper investigates how weather conditions influence droughts in groundwater. We focus on understanding why some groundwater droughts last for several years, since these long events can be difficult to manage and have particularly bad impacts. We find that some features of the groundwater system can worsen the effects of dry weather, making long groundwater droughts more likely. We categorize global groundwater data into three groups to describe how it is impacted by the weather.
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