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Hydrogeology Journal

Erschienen in:

01.11.2010 | Paper

Impacts of climate change on groundwater in Australia: a sensitivity analysis of recharge

verfasst von: J. L. McCallum, R. S. Crosbie, G. R. Walker, W. R. Dawes

Erschienen in: Hydrogeology Journal | Ausgabe 7/2010

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Abstract

Groundwater recharge is a complex process reflecting many interactions between climate, vegetation and soils. Climate change will impact upon groundwater recharge but it is not clear which climate variables have the greatest influence over recharge. This study used a sensitivity analysis of climate variables using a modified version of WAVES, a soil-vegetation-atmosphere-transfer model (unsaturated zone), to determine the importance of each climate variable in the change in groundwater recharge for three points in Australia. This study found that change in recharge is most sensitive to change in rainfall. Increases in temperature and changes in rainfall intensity also led to significant changes in recharge. Although not as significant as other climate variables, some changes in recharge were observed due to changes in solar radiation and carbon dioxide concentration. When these variables were altered simultaneously, changes in recharge appeared to be closely related to changes in rainfall; however, in nearly all cases, recharge was greater than would have been predicted if only rainfall had been considered. These findings have implications for how recharge is projected to change due to climate change.

Vorheriger Artikel Groundwater-level response to land-use change and the implications for salinity management in the West Moorabool River catchment, Victoria, Australia

Nächster Artikel Modelling climate-change impacts on groundwater recharge in the Murray-Darling Basin, Australia

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Titel: Impacts of climate change on groundwater in Australia: a sensitivity analysis of recharge
verfasst von: J. L. McCallum
R. S. Crosbie
G. R. Walker
W. R. Dawes
Publikationsdatum: 01.11.2010
Verlag: Springer-Verlag
Erschienen in: Hydrogeology Journal / Ausgabe 7/2010
Print ISSN: 1431-2174
Elektronische ISSN: 1435-0157
DOI: https://doi.org/10.1007/s10040-010-0624-y

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