Changes in mean evapotranspiration dominate groundwater recharge in semi-arid regions

• DOI: 10.5194/egusphere-2024-433
• Publication Date: 2024-04-08T08:38:57Z
• Authors: Tuvia Turkeltaub; Golan Bel
• Keywords: G; Environmental sciences; Technology; T; Geography. Anthropology. Recreation; GE1-350; Environmental technology. Sanitary engineering; TD1-1066

Abstract. Groundwater is one of the most essential natural resources and affected by climate variability. However, our understanding effects on groundwater recharge (GR), particularly in dry regions, limited. Future projections suggest changes many statistical characteristics potential evapotranspiration (ETref) rainfall that dictates GR. To better understand relationship between statistics GR, we separately considered to mean, STD, extreme ETref rainfall. We simulated GR under different conditions multiple semi-arid locations worldwide. find average have significant impact Interestingly, much weaker than rain statistics. Contradictory results previous studies may be explained differences projected