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| Titel |
Changes in Köppen-Geiger climate types under a future climate for Australia: hydrological implications |
| VerfasserIn |
R. S. Crosbie, D. W. Pollock, F. S. Mpelasoka, O. V. Barron, S. P. Charles, M. J. Donn |
| 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. 9 ; Nr. 16, no. 9 (2012-09-18), S.3341-3349 |
| Datensatznummer |
250013474
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| Publikation (Nr.) |
 copernicus.org/hess-16-3341-2012.pdf |
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| Zusammenfassung |
The Köppen-Geiger climate classification has been used for over a
century to delineate climate types across the globe. As it was developed to
mimic the distribution of vegetation, it may provide a useful surrogate for
making projections of the future distribution of vegetation, and hence
resultant hydrological implications, under climate change scenarios. This
paper developed projections of the Köppen-Geiger climate types covering
the Australian continent for a 2030 and 2050 climate relative to a 1990
historical baseline climate using 17 Global Climate Models (GCMs) and five
global warming scenarios. At the highest level of classification for a
+2.4 °C future climate (the upper limit projected for 2050) relative to
the historical baseline, it was projected that the area of the continent
covered by
– tropical climate types would increase from 8.8% to 9.1%;
– arid climate types would increase from 76.5% to 81.7%;
– temperate climate types would decrease from 14.7% to 9.2%;
– cold climate types would decrease from 0.016% to 0.001%.
Previous climate change impact studies on water resources in Australia have
assumed a static vegetation distribution. If the change in projected climate
types is used as a surrogate for a change in vegetation, then the major
transition in climate from temperate to arid in parts of Australia under a
drier future climate could cause indirect effects on water resources. A
transition from annual cropping to perennial grassland would have a
compounding effect on the projected reduction in recharge. In contrast, a
transition from forest to grassland would have a mitigating effect on the
projected reduction in runoff. |
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