Changes in mean evapotranspiration dominate groundwater recharge in semi-arid regions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F24%3A101025" target="_blank" >RIV/60460709:41330/24:101025 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.5194/hess-28-4263-2024" target="_blank" >https://doi.org/10.5194/hess-28-4263-2024</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5194/hess-28-4263-2024" target="_blank" >10.5194/hess-28-4263-2024</a>
Alternative languages
Result language
angličtina
Original language name
Changes in mean evapotranspiration dominate groundwater recharge in semi-arid regions
Original language description
Groundwater is one of the most essential natural resources and is affected by climate variability. However, our understanding of the effects of climate on groundwater recharge (R), particularly in dry regions, is limited. Future climate projections suggest changes in many statistical characteristics of the potential evapotranspiration (Ep) and the rainfall that dictate the R. To better understand the relationship between climate statistics and R, we separately considered changes to the mean, standard deviation, and extreme statistics of the Ep and the precipitation (P). We simulated the R under different climate conditions in multiple semi-arid and arid locations worldwide. Obviously, lower precipitation is expected to result in lower groundwater recharge and vice versa. However, the relationship between R and P is non-linear. Examining the ratio R/P is useful for revealing the underlying relation between R and P; therefore, we focus on this ratio. We find that changes in the average Ep have the most significant impact on R/P. Interestingly, we find that changes in the extreme Ep statistics have much weaker effects on R/P than changes in extreme P statistics. Contradictory results of previous studies and predictions of future groundwater recharge may be explained by the differences in the projected climate statistics.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10501 - Hydrology
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Hydrology and Earth System Sciences
ISSN
1027-5606
e-ISSN
1027-5606
Volume of the periodical
28
Issue of the periodical within the volume
18
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
4263-4274
UT code for WoS article
001314477700001
EID of the result in the Scopus database
2-s2.0-85205344500