Testing the Clausius-Clapeyron constraint on the aerosol-induced changes in mean and extreme precipitation

被引：31

作者：

Chen, Gang ^{[1
]}

Ming, Yi ^{[2
]}

Singer, Noah D. ^{[1
]}

Lu, Jian ^{[3
,4
]}

机构：

[1] Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14853 USA

[2] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA

[3] Ctr Ocean Land Atmosphere Studies, Calverton, MD 20705 USA

[4] George Mason Univ, Dept Atmospher Ocean & Earth Sci, Fairfax, VA 22030 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

基金：

美国国家科学基金会;

关键词：

HYDROLOGICAL CYCLE; CLIMATE; RESPONSES;

D O I：

10.1029/2010GL046435

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The impacts of aerosol and greenhouse gas forcing of the 20th century on the climatological mean and extremes of precipitation are compared in an atmospheric GCM with improved parameterizations of aerosol direct and indirect effects. In spite of different forcing patterns, the thermodynamic effects of aerosol cooling and greenhouse gas warming on the zonally averaged precipitation have similar latitudinal patterns but opposite signs, plausibly due to the effects of temperature on atmospheric water vapor content and moisture flux. The fractional thermodynamic change, for both the moisture convergence in mid-and high latitudes and precipitation extremes at all latitudes, scales linearly with the abundance of atmospheric moisture at a rate of similar to 5%/K, somewhat less than the expectation from the Clausius-Clapeyron relation. Citation: Chen, G., Y. Ming, N. D. Singer, and J. Lu (2011), Testing the Clausius-Clapeyron constraint on the aerosol-induced changes in mean and extreme precipitation, Geophys. Res. Lett., 38, L04807, doi:10.1029/2010GL046435.

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