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Cited by 425

The DOI matches its Crossref record; 94 of the 94 references it cites were found in a registry or an index.

The pronounced seasonality of global groundwater recharge

Open access
Jasechko, Scott, Birks, S. Jean, Gleeson, Tom, Wada, Yoshihide, Fawcett, Peter J., Sharp, Zachary D., McDonnell, Jeffrey J., Welker, Jeffrey M.·2014·Water Resources Research
DOI 10.1002/2014wr015809
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Abstract

Groundwater recharged by meteoric water supports human life by providing two billion people with drinking water and by supplying 40% of cropland irrigation. While annual groundwater recharge rates are reported in many studies, fewer studies have explicitly quantified intra‐annual (i.e., seasonal) differences in groundwater recharge. Understanding seasonal differences in the fraction of precipitation that recharges aquifers is important for predicting annual recharge groundwater rates under changing seasonal precipitation and evapotranspiration regimes in a warming climate, for accurately interpreting isotopic proxies in paleoclimate records, and for understanding linkages between ecosystem productivity and groundwater recharge. Here we determine seasonal differences in the groundwater recharge ratio, defined here as the ratio of groundwater recharge to precipitation, at 54 globally distributed locations on the basis of 18 O/ 16 O and 2 H/ 1 H ratios in precipitation and groundwater. Our analysis shows that arid and temperate climates have wintertime groundwater recharge ratios that are consistently higher than summertime groundwater recharge ratios, while tropical groundwater recharge ratios are at a maximum during the wet season. The isotope‐based recharge ratio seasonality is consistent with monthly outputs from a global hydrological model (PCR‐GLOBWB) for most, but not all locations. The pronounced seasonality in groundwater recharge ratios shown in this study signifies that, from the point of view of predicting future groundwater recharge rates, a unit change in winter (temperate and arid regions) or wet season (tropics) precipitation will result in a greater change to the annual groundwater recharge rate than the same unit change to summer or dry season precipitation.

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Metadata

Authors
Jasechko, S., Birks, S. J., Gleeson, T., Wada, Y., Fawcett, P. J., Sharp, Z. D., McDonnell, J. J., & Welker, J. M.
Venue
Water Resources Research
Publisher
American Geophysical Union (AGU)
Published
2014-11
Volume
50
Issue
11
Pages
8845-8867
ISSN
  • 0043-1397 (ISSN-L)
  • 1944-7973
DOI
10.1002/2014wr015809
OpenAlex
W2119902141
Cited by
425
References
94
FWCI
15.97
Type
journal article
Language
en
Open access
bronze

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