Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 39, Issue -, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2012GL052014
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Funding
- Australian Research Council [DP0772665]
- Australian National University
- Australian Research Council [DP0772665] Funding Source: Australian Research Council
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This study examines the role played by high sea surface temperatures around northern Australia, in producing the extreme precipitation which occurred during the strong La Nina in December 2010. These extreme rains produced floods that impacted almost 1,300,000 km(2), caused billions of dollars in damage, led to the evacuation of thousands of people and resulted in 35 deaths. Through the use of regional climate model simulations the contribution of the observed high sea surface temperatures to the rainfall is quantified. Results indicate that the large-scale atmospheric circulation changes associated with the La Nina event, while associated with above average rainfall in northeast Australia, were insufficient to produce the extreme rainfall and subsequent flooding observed. The presence of high sea surface temperatures around northern Australia added similar to 25% of the rainfall total. Citation: Evans, J. P., and I. Boyer-Souchet (2012), Local sea surface temperatures add to extreme precipitation in northeast Australia during La Nina, Geophys. Res. Lett., 39, L10803, doi:10.1029/2012GL052014.
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