Global recharge data set indicates strengthened groundwater connection to surface fluxes
Groundwater is an invaluable global resource, but its long-term viability as a resource for consumption, agriculture, and ecosystems depends on precipitation recharging aquifers. How much precipitation recharges groundwaters varies enormously across Earth's surface, yet recharge rates often rem...
Published in: | Geophysical Research Letters |
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Language: | English |
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Online Access: | https://doi.org/10.1029/2022GL099010 |
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fteawag:oai:dora:eawag_26220 2024-09-15T18:30:02+00:00 Global recharge data set indicates strengthened groundwater connection to surface fluxes Berghuijs, Wouter R. Luijendijk, Elco Moeck, Christian van der Velde, Ype Allen, Scott T. 2022 https://doi.org/10.1029/2022GL099010 eng eng Wiley Geophysical Research Letters--Geophys. Res. Lett.--journals:1144--0094-8276 eawag:26220 doi:10.1029/2022GL099010 journal id: journals:1144 issn: 0094-8276 ut: 000928052000044 scopus: 2-s2.0-85144515467 Journal Article Text 2022 fteawag https://doi.org/10.1029/2022GL099010 2024-07-07T23:33:30Z Groundwater is an invaluable global resource, but its long-term viability as a resource for consumption, agriculture, and ecosystems depends on precipitation recharging aquifers. How much precipitation recharges groundwaters varies enormously across Earth's surface, yet recharge rates often remain uncertain. Here we use a global synthesis of field-estimated recharge across six continents to show that globally recharge first-order follows a simple function of climatic aridity. We use this relationship to estimate long-term recharge in energy-limited systems outside of permafrost regions. Our aridity-based recharge estimates are consistent with the global field data but, on average, double previous estimates of global models. Our higher recharge estimates are likely caused by preferential groundwater recharge and discharge occurring at grid scales finer than global models. The higher recharge estimates suggest that more groundwater contributes to evapotranspiration and streamflow than previously represented by global hydrological models and global water cycle diagrams. Article in Journal/Newspaper permafrost DORA Eawag Geophysical Research Letters 49 23 |
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Open Polar |
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language |
English |
description |
Groundwater is an invaluable global resource, but its long-term viability as a resource for consumption, agriculture, and ecosystems depends on precipitation recharging aquifers. How much precipitation recharges groundwaters varies enormously across Earth's surface, yet recharge rates often remain uncertain. Here we use a global synthesis of field-estimated recharge across six continents to show that globally recharge first-order follows a simple function of climatic aridity. We use this relationship to estimate long-term recharge in energy-limited systems outside of permafrost regions. Our aridity-based recharge estimates are consistent with the global field data but, on average, double previous estimates of global models. Our higher recharge estimates are likely caused by preferential groundwater recharge and discharge occurring at grid scales finer than global models. The higher recharge estimates suggest that more groundwater contributes to evapotranspiration and streamflow than previously represented by global hydrological models and global water cycle diagrams. |
format |
Article in Journal/Newspaper |
author |
Berghuijs, Wouter R. Luijendijk, Elco Moeck, Christian van der Velde, Ype Allen, Scott T. |
spellingShingle |
Berghuijs, Wouter R. Luijendijk, Elco Moeck, Christian van der Velde, Ype Allen, Scott T. Global recharge data set indicates strengthened groundwater connection to surface fluxes |
author_facet |
Berghuijs, Wouter R. Luijendijk, Elco Moeck, Christian van der Velde, Ype Allen, Scott T. |
author_sort |
Berghuijs, Wouter R. |
title |
Global recharge data set indicates strengthened groundwater connection to surface fluxes |
title_short |
Global recharge data set indicates strengthened groundwater connection to surface fluxes |
title_full |
Global recharge data set indicates strengthened groundwater connection to surface fluxes |
title_fullStr |
Global recharge data set indicates strengthened groundwater connection to surface fluxes |
title_full_unstemmed |
Global recharge data set indicates strengthened groundwater connection to surface fluxes |
title_sort |
global recharge data set indicates strengthened groundwater connection to surface fluxes |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1029/2022GL099010 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Geophysical Research Letters--Geophys. Res. Lett.--journals:1144--0094-8276 eawag:26220 doi:10.1029/2022GL099010 journal id: journals:1144 issn: 0094-8276 ut: 000928052000044 scopus: 2-s2.0-85144515467 |
op_doi |
https://doi.org/10.1029/2022GL099010 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
23 |
_version_ |
1810471523090169856 |