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	What is the primary cause of the observed widespread increases in precipitation intensity
	Run Liu ; Shaw C.Liu ; Ralph J.Cicerone ; C.J.Shiu ; Jun Li ; Jingli Wang ; Yuanhang Zhang
	2015
关键词	Extreme precipitation global warming aerosols risk of floods and droughts
英文摘要	Significant increases in precipitation intensity, as a result of increases of heavy precipitation and/or decreases of light precipitation have been observed over widespread regions of the globe.Global wanning and effects of anthropogenic aerosols have been proposed as possible causes of these changes.In this work we identify the primary cause of the increases in precipitation intensity by contrasting observed characteristics of precipitation in the tropical 10°S-10°N oceanic region to those at higher latitudes (5°N-20°N, 20°N-45°N land area) in the Northern Hemisphere (NH) for 1979-2007, and a polluted region in eastern China (1955-2011).Significant increases in heavy precipitation and/or decreases in light precipitation with net increases in precipitation intensity are found in all regions examined, while amounts of total precipitation show relative small or negligible changes.Characteristics of these changes suggest that global warming rather than aerosol effects is the primary cause of the changes.; 1-18
语种	英语
出处	2015中国科协海峡两岸青年科学家学术活动月两岸环保高层专家论坛
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/446420]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Run Liu,Shaw C.Liu,Ralph J.Cicerone,et al. What is the primary cause of the observed widespread increases in precipitation intensity. 2015-01-01.

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