气候变化领域集成服务门户(CCPortal): Enhanced aerosol particle growth sustained by high continental chlorine emission in India

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DOI	10.1038/s41561-020-00677-x
	Enhanced aerosol particle growth sustained by high continental chlorine emission in India
	Gunthe S.S.; Liu P.; Panda U.; Raj S.S.; Sharma A.; Darbyshire E.; Reyes-Villegas E.; Allan J.; Chen Y.; Wang X.; Song S.; Pöhlker M.L.; Shi L.; Wang Y.; Kommula S.M.; Liu T.; Ravikrishna R.; McFiggans G.; Mickley L.J.; Martin S.T.; Pöschl U.; Andreae M.O.; Coe H.
发表日期	2021
ISSN	17520894
起始页码	77
结束页码	84
卷号	14 期号:2
英文摘要	Many cities in India experience severe deterioration of air quality in winter. Particulate matter is a key atmospheric pollutant that impacts millions of people. In particular, the high mass concentration of particulate matter reduces visibility, which has severely damaged the economy and endangered human lives. But the underlying chemical mechanisms and physical processes responsible for initiating haze and fog formation remain poorly understood. Here we present the measurement results of chemical composition of particulate matter in Delhi and Chennai. We find persistently high chloride in Delhi and episodically high chloride in Chennai. These measurements, combined with thermodynamic modelling, suggest that in the presence of excess ammonia in Delhi, high local emission of hydrochloric acid partitions into aerosol water. The highly water-absorbing and soluble chloride in the aqueous phase substantially enhances aerosol water uptake through co-condensation, which sustains particle growth, leading to haze and fog formation. We therefore suggest that the high local concentration of gas-phase hydrochloric acid, possibly emitted from plastic-contained waste burning and industry, causes some 50% of the reduced visibility. Our work implies that identifying and regulating gaseous hydrochloric acid emissions could be critical to improve visibility and human health in India. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	aerosol; aerosol composition; air quality; aqueous solution; atmospheric pollution; biomass burning; chemical composition; concentration (composition); incineration; particulate matter; water uptake; Chennai; Delhi; India; Tamil Nadu
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/206901
作者单位	EWRE Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, India; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; Academy of Scientific and Innovative Research (AcSIR), Department of Environment and Sustainability, CSIR – Institute of Minerals and Materials Technology, Bhubaneswar, India; Department of Earth and Environmental Sciences, School of Natural Sciences, University of Manchester, Manchester, United Kingdom; National Centre for Atmospheric Science, University of Manchester, Manchester, United Kingdom; Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom; Data Science Institute, Lancaster University, Lancaster, United Kingdom; School of Energy and Environment, City University of Hong Kong, Hong Kong; Multiphase Chemistry and Biogeochemistry Department, Max Planck Institute fo...
推荐引用方式 GB/T 7714	Gunthe S.S.,Liu P.,Panda U.,et al. Enhanced aerosol particle growth sustained by high continental chlorine emission in India[J],2021,14(2).
APA	Gunthe S.S..,Liu P..,Panda U..,Raj S.S..,Sharma A..,...&Coe H..(2021).Enhanced aerosol particle growth sustained by high continental chlorine emission in India.Nature Geoscience,14(2).
MLA	Gunthe S.S.,et al."Enhanced aerosol particle growth sustained by high continental chlorine emission in India".Nature Geoscience 14.2(2021).