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DOI	10.1038/s41561-020-00675-z
	Disproportionate control on aerosol burden by light rain
	Wang Y.; Xia W.; Liu X.; Xie S.; Lin W.; Tang Q.; Ma H.-Y.; Jiang Y.; Wang B.; Zhang G.J.
发表日期	2021
ISSN	17520894
起始页码	72
结束页码	76
卷号	14 期号:2
英文摘要	Atmospheric aerosols are of great climatic and environmental importance due to their effects on the Earth’s radiative energy balance and air quality. Aerosol concentrations are strongly influenced by rainfall via wet removal. Global climate models have been used to quantify their climate and health effects. However, they commonly suffer from a well-known problem of ‘too much light rain and too little heavy rain’. The impact of simulated rainfall intensities on aerosol burden at the global scale is still unclear. Here we show that rainfall intensity has profound impacts on aerosol burden, and light rain has a disproportionate control on it. By improving the representation of convection, the light-rain (1–20 mm d−1) frequency in two state-of-the-art global climate models is reduced. As a result, the aerosol burden is increased globally, especially over the tropics and subtropics, by as much as 0.3 in aerosol optical depth in tropical rain belts. It is attributed to the dominant contribution of light rain to the accumulated wet removal by its frequent occurrence despite its weak intensity. The implication of these findings is that understanding the nature of aerosol scavenging by rainfall is critical to aerosol–climate interaction and its impact on climate. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	aerosol; air quality; atmospheric convection; climate effect; climate modeling; energy balance; global climate; optical depth; precipitation intensity; scavenging (chemistry); solar radiation
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206974
作者单位	Ministry of Education Key Laboratory for Earth System Modeling and Department of Earth System Science, Tsinghua University, Beijing, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States; Lawrence Livermore National Laboratory, Livermore, CA, United States; Brookhaven National Laboratory, Upton, NY, United States; CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, China; State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; Scripps Institution of Oceanography, La Jolla, CA, United States
推荐引用方式 GB/T 7714	Wang Y.,Xia W.,Liu X.,et al. Disproportionate control on aerosol burden by light rain[J],2021,14(2).
APA	Wang Y..,Xia W..,Liu X..,Xie S..,Lin W..,...&Zhang G.J..(2021).Disproportionate control on aerosol burden by light rain.Nature Geoscience,14(2).
MLA	Wang Y.,et al."Disproportionate control on aerosol burden by light rain".Nature Geoscience 14.2(2021).