Journal
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
Volume 139, Issue 671, Pages 334-339Publisher
WILEY
DOI: 10.1002/qj.1919
Keywords
probable maximum precipitation; PMP; ClausiusClapeyron scaling; rainfall extremes; climate change
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Funding
- Natural Environment Research Council programme: Flood Risk from Extreme Events [NE/F011822/1]
- BP plc (Upstream Environmental Technology Program)
- NERC [NE/F011822/1] Funding Source: UKRI
- Natural Environment Research Council [NE/F011822/1] Funding Source: researchfish
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The sensitivity of squall rainfall to changes in atmospheric temperature is investigated. For instantaneous rainrates and accumulations up to one hour, extreme rainfall scales with Clausius-Clapeyron (CC) for temperatures below 24 degrees C and at up to twice CC above 24 degrees C. For longer accumulation periods and higher temperatures the scaling breaks down due to increased propagation of the squall line. For all periods, the storm average rainfall is found to scale at approximately 1.5 times CC over the entire range of temperatures. These results have implications for design parameters for infrastructure that is vulnerable to flooding and for climate change projections. Copyright (c) 2012 Royal Meteorological Society
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