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| Titel |
Sensitivity of groundwater recharge using climatic analogues and HYDRUS-1D |
| VerfasserIn |
B. Leterme, D. Mallants, D. Jacques |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 8 ; Nr. 16, no. 8 (2012-08-06), S.2485-2497 |
| Datensatznummer |
250013407
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| Publikation (Nr.) |
 copernicus.org/hess-16-2485-2012.pdf |
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| Zusammenfassung |
| The sensitivity of groundwater recharge to different climate conditions was
simulated using the approach of climatic analogue stations, i.e. stations
presently experiencing climatic conditions corresponding to a possible future
climate state. The study was conducted in the context of a safety assessment
of a future near-surface disposal facility for low and intermediate level
short-lived radioactive waste in Belgium; this includes estimation of
groundwater recharge for the next millennia. Groundwater recharge was
simulated using the Richards based soil water balance model HYDRUS-1D and
meteorological time series from analogue stations. This study used four
analogue stations for a warmer subtropical climate with changes of average
annual precipitation and potential evapotranspiration from −42% to
+5% and from +8% to +82%, respectively, compared to the
present-day climate. Resulting water balance calculations yielded a change in
groundwater recharge ranging from a decrease of 72% to an increase of
3% for the four different analogue stations. The Gijon analogue station
(Northern Spain), considered as the most representative for the near future
climate state in the study area, shows an increase of 3% of groundwater
recharge for a 5% increase of annual precipitation. Calculations for a
colder (tundra) climate showed a change in groundwater recharge ranging from
a decrease of 97% to an increase of 32% for four different analogue
stations, with an annual precipitation change from −69% to −14%
compared to the present-day climate. |
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