Journal article

Impact of atmospheric circulation on the rainfall-temperature relationship in Australia

Bhavik Magan, Seokhyeon Kim, Conrad Wasko, Renaud Barbero, Vincent Moron, Rory Nathan, Ashish Sharma

ENVIRONMENTAL RESEARCH LETTERS | IOP PUBLISHING LTD | Published : 2020

Abstract

Anthropogenic climate change is leading to the intensification of extreme rainfall due to an increase in atmospheric water holding capacity at higher temperatures as governed by the Clausius-Clapeyron (C-C) relationship. However, the rainfall-temperature sensitivity (termed scaling) often deviates from the C-C relationship. This manuscript uses classifications prescribed by regional-scale atmospheric circulation patterns to investigate whether deviations from the C-C relationship in tropical Australia can be explained by differing weather types (WT). We show that the rainfall-temperature scaling differs depending on the WTs, with the difference increasing with rainfall magnitude. All monsoon..

View full abstract

Grants

Awarded by Australian Research Council


Funding Acknowledgements

This work has been undertaken as part of a Discovery Project (DP200101326, Assessing Water Supply Security in a Nonstationary Environment) funded by the Australian Research Council. Climate data was obtained from the Australian Bureau of Meteorology and can be found at www.bom.gov.au/climate/.Weather types are available on request from the authors. Conrad Wasko receives funding from the University of Melbourne McKenzie Postdoctoral Fellowships Program.