Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101737
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Type: Journal article
Title: Reduced spatial extent of extreme storms at higher temperatures
Author: Wasko, C.
Sharma, A.
Westra, S.
Citation: Geophysical Research Letters, 2016; 43(8):4026-4032
Publisher: American Geophysical Union
Issue Date: 2016
ISSN: 0094-8276
1944-8007
Statement of
Responsibility: 
Conrad Wasko, Ashish Sharma, and Seth Westra
Abstract: Extreme precipitation intensity is expected to increase in proportion to the water-holding capacity of the atmosphere. However, increases beyond this expectation have been observed, implying that changes in storm dynamics may be occurring alongside changes in moisture availability. Such changes imply shifts in the spatial organization of storms, and we test this by analyzing present-day sensitivities between storm spatial organization and near-surface atmospheric temperature. We show that both the total precipitation depth and the peak precipitation intensity increases with temperature, while the storm’s spatial extent decreases. This suggests that storm cells intensify at warmer temperatures, with a greater total amount of moisture in the storm, as well as a redistribution of moisture toward the storm center. The results have significant implications for the severity of flooding, as precipitation may become both more intense and spatially concentrated in a warming climate.
Keywords: Precipitation; temperature; extreme; spatial
Rights: © 2016. American Geophysical Union. All Rights Reserved.
RMID: 0030047501
DOI: 10.1002/2016GL068509
Grant ID: http://purl.org/au-research/grants/arc/DP150100411
Appears in Collections:Civil and Environmental Engineering publications

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