气候变化领域集成服务门户(CCPortal): Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April

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DOI	10.1029/2019GL086204
	Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April
	Zhang L.; Fu T.-M.; Tian H.; Ma Y.; Chen J.-P.; Tsai T.-C.; Tsai I.-C.; Meng Z.; Yang X.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Precipitation over Southern China in April, largely associated with mesoscale convective systems (MCSs), has declined significantly in recent decades. It is unclear how this decline in precipitation may be related to the concurrent increase of anthropogenic aerosols over this region. Here, using observation analyses and model simulations, we showed that increased levels of anthropogenic aerosols can significantly reduce MCS occurrences by 21% to 32% over Southern China in April, leading to less rainfall. Half of this MCS occurrence reduction was due to the direct radiative scattering of aerosols and the indirect enhancement of non-MCS liquid cloud reflectance by aerosols, which stabilized the regional atmosphere. The other half of the MCS occurrence reduction was due to the microphysical and dynamical responses of the MCS to aerosols. Our results demonstrated the complex effects of aerosols on MCSs via impacts on both the convective systems and on the regional atmosphere. © 2020 The Authors.
英文关键词	Aerosols; Precipitation (chemical); Precipitation (meteorology); Aerosol-cloud interaction; Aerosol-radiation interactions; Anthropogenic aerosols; Complex effects; Convective systems; Dynamical response; Mesoscale Convective System; Model simulation; Storms; anthropogenic effect; convective system; mesoscale eddy; radiative forcing; scattering; volcanic cloud; China
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170567
作者单位	Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Shenzhen Institute of Sustainable Development, Southern University of Science and Technology, Shenzhen, China; Department of Atmospheric Sciences, National Taiwan University, Taiwan; International Degree Program in Climate Change and Sustainable Development, National Taiwan University, Taiwan; Research Center for Environmental Changes, Academia Sinica, Taiwan
推荐引用方式 GB/T 7714	Zhang L.,Fu T.-M.,Tian H.,et al. Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April[J],2020,47(6).
APA	Zhang L..,Fu T.-M..,Tian H..,Ma Y..,Chen J.-P..,...&Yang X..(2020).Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April.Geophysical Research Letters,47(6).
MLA	Zhang L.,et al."Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April".Geophysical Research Letters 47.6(2020).