globalchange  > 气候变化与战略
DOI: 10.1038/s41561-020-00677-x
论文题名:
Enhanced aerosol particle growth sustained by high continental chlorine emission in India
作者: 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.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2021
卷: 14, 期:2
起始页码: 77
结束页码: 84
语种: 英语
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169757
Appears in Collections:气候变化与战略

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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 for Chemistry, Mainz, Germany; Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, India; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States; Department of Geology and Geophysics, King Saud University, Riyadh, Saudi Arabia; Department of Civil and Infrastructure Engineering, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, India; The Conflict and Environment Observatory, Hebden Bridge, West Yorkshire, United Kingdom

Recommended Citation:
Gunthe S.S.,Liu P.,Panda U.,et al. Enhanced aerosol particle growth sustained by high continental chlorine emission in India[J]. Nature Geoscience,2021-01-01,14(2)
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