The shifting probability distribution of global daytime and night-time temperatures

被引：266

作者：

Donat, Markus G. ^{[1
]}

Alexander, Lisa V. ^{[1
,2
]}

机构：

[1] Univ New S Wales, Climate Change Res Ctr, Sydney, NSW 2052, Australia

[2] Univ New S Wales, ARC, Ctr Excellence Climate Syst Sci, Sydney, NSW 2052, Australia

来源：

GEOPHYSICAL RESEARCH LETTERS | 2012年 / 39卷

基金：

澳大利亚研究理事会;

关键词：

PRECIPITATION; EXTREMES; SIMULATIONS; ENSEMBLE; SUMMER; EUROPE; SCALE;

D O I：

10.1029/2012GL052459

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Using a global observational dataset of daily gridded maximum and minimum temperatures we investigate changes in the respective probability density functions of both variables using two 30-year periods; 1951-1980 and 1981-2010. The results indicate that the distributions of both daily maximum and minimum temperatures have significantly shifted towards higher values in the latter period compared to the earlier period in almost all regions, whereas changes in variance are spatially heterogeneous and mostly less significant. However asymmetry appears to have decreased but is altered in such a way that it has become skewed towards the hotter part of the distribution. Changes are greater for daily minimum (night-time) temperatures than for daily maximum (daytime) temperatures. As expected, these changes have had the greatest impact on the extremes of the distribution and we conclude that the distribution of global daily temperatures has indeed become "more extreme" since the middle of the 20th century. Citation: Donat, M. G., and L. V. Alexander (2012), The shifting probability distribution of global daytime and night-time temperatures, Geophys. Res. Lett., 39, L14707, doi:10.1029/2012GL052459.

引用

页数：5

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