On the detection of precipitation dependence on temperature
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AbstractEmploying their newly proposed interannual difference method (IADM), Liu et al. (2009) and Shiu et al. (2012) reported a shocking increase of around 100% K-1 in heavy precipitation with warming global temperature in 1979-2007. Such increase is alarming and prompts us to probe into the IADM. In this study, both analytical derivations and numerical analyses demonstrate that IADM provides no additional information to that of the conventional linear regression, and also, it may give a false indication of dependence. For clarity and simplicity, we therefore recommend linear regression analysis over the IADM for the detection of dependence. We also find that heavy precipitation decreased during the global warming hiatus, and the precipitation dependence on temperature drops by almost 50% when the study period is extended to 1979-2014 and it may keep dropping in the near future. The risk of having heavy precipitation under warming global temperature may have been overestimated.
All Author(s) ListZhou Y, Luo M, Leung Y
Journal nameGeophysical Research Letters
Volume Number43
Issue Number9
Pages4555 - 4565
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesGeology; Geosciences, Multidisciplinary

Last updated on 2021-11-04 at 00:34