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DOI	10.5194/acp-21-4899-2021
	Observed trends in clouds and precipitation (1983-2009): Implications for their cause(s)
	Zhong X.; Chen Liu S.; Liu R.; Wang X.; Mo J.; Li Y.
发表日期	2021
ISSN	1680-7316
起始页码	4899
结束页码	4913
卷号	21 期号:6
英文摘要	Satellite observations (International Satellite Cloud Climatology Project (ISCCP), 1983-2009) of linear trends in cloud cover are compared to those in global precipitation (Global Precipitation Climatology Project (GPCP) pentad V2.2, 1983-2009), to investigate possible cause(s) of the linear trends in both cloud cover and precipitation. The spatial distributions of the linear trends in total cloud cover and precipitation are both characterized primarily by a broadening of the major ascending zone of Hadley circulation. Our correlation studies suggest that global warming, Atlantic Multidecadal Oscillation (AMO) and Pacific Decadal Oscillation (PDO) can explain 67 %, 49 % and 38 %, respectively, of the spatial variabilities in the linear trends in cloud cover, but causality is harder to establish. Further analysis of the broadening of the major ascending zone of Hadley circulation shows that the trend in global temperature, rather than those in AMO and PDO, is the primary contributor to the observed linear trends in total cloud cover and precipitation in 1983-2009. The underlying mechanism driving this broadening is proposed to be the moisture-convection-latent-heat feedback cycle under global warming conditions. The global analysis is extended by investigating connections between clouds and precipitation in China, based on a large number of long-running, high-quality surface weather stations in 1957-2005. This reveals a quantitative matching relationship between the reduction in light precipitation and the reduction in total cloud cover. Furthermore, our study suggests that the reduction in cloud cover in China is primarily driven by global temperature; PDO plays a secondary role, while the contribution from AMO and Niño3.4 is insignificant, consistent with the global analysis. © 2021 Author(s).
语种	英语
scopus关键词	Atlantic Multidecadal Oscillation; cloud cover; cloud radiative forcing; Pacific Decadal Oscillation; precipitation assessment; precipitation intensity; trend analysis; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247012
作者单位	Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511486, China; Hangzhou AiMa Technologies, Hangzhou, 311121, China
推荐引用方式 GB/T 7714	Zhong X.,Chen Liu S.,Liu R.,et al. Observed trends in clouds and precipitation (1983-2009): Implications for their cause(s)[J],2021,21(6).
APA	Zhong X.,Chen Liu S.,Liu R.,Wang X.,Mo J.,&Li Y..(2021).Observed trends in clouds and precipitation (1983-2009): Implications for their cause(s).ATMOSPHERIC CHEMISTRY AND PHYSICS,21(6).
MLA	Zhong X.,et al."Observed trends in clouds and precipitation (1983-2009): Implications for their cause(s)".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.6(2021).