Impact of historical land cover change on daily indices of climate extremes including droughts in eastern Australia

Deo, Ravinesh C., Syktus, J. I., McAlpine, C. A., Lawrence, P. J., McGowan, H. A. and Phinn, Stuart R. (2009) Impact of historical land cover change on daily indices of climate extremes including droughts in eastern Australia. Geophysical Research Letters, 36 L08705: x-x. doi:10.1029/2009GL037666


Author Deo, Ravinesh C.
Syktus, J. I.
McAlpine, C. A.
Lawrence, P. J.
McGowan, H. A.
Phinn, Stuart R.
Title Impact of historical land cover change on daily indices of climate extremes including droughts in eastern Australia
Journal name Geophysical Research Letters   Check publisher's open access policy
ISSN 0094-8276
Publication date 2009-04-25
Year available 2009
Sub-type Article (original research)
DOI 10.1029/2009GL037666
Open Access Status DOI
Volume 36
Issue L08705
Start page x
End page x
Total pages 5
Place of publication United States
Publisher American Geophysical Union
Language eng
Subject C1
970105 Expanding Knowledge in the Environmental Sciences
0406 Physical Geography and Environmental Geoscience
Abstract There is growing scientific evidence that anthropogenic land cover change (LCC) can produce a significant impact on regional climate. However, few studies have quantified this impact on climate extremes and droughts. In this study, we analysed daily data from a pair of ensemble simulations using the CSIRO AGCM for the period 1951–2003 to quantify the impact of LCC on selected daily indices of climate extremes in eastern Australia. The results showed: an increase in the number of dry and hot days, a decrease in daily rainfall intensity and wet day rainfall, and an increase in the decile‐based drought duration index for modified land cover conditions. These changes were statistically significant for all years, and especially pronounced during strong El Niño events. Therefore it appears that LCC has exacerbated climate extremes in eastern Australia, thus resulting in longer‐lasting and more severe droughts.
Keyword land cover change
climate extremes
droughts
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID UQL29
Institutional Status UQ

 
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Created: Fri, 24 Jul 2009, 23:42:07 EST by Dr Ravinesh Deo on behalf of School of Geography, Planning & Env Management