气候变化领域集成服务门户(CCPortal): Modeling secondary organic aerosol formation from volatile chemical products

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DOI	10.5194/acp-21-18247-2021
	Modeling secondary organic aerosol formation from volatile chemical products
	Pennington E.A.; Seltzer K.M.; Murphy B.N.; Qin M.; Seinfeld J.H.; Pye H.O.T.
发表日期	2021
ISSN	1680-7316
起始页码	18247
结束页码	18261
卷号	21 期号:24
英文摘要	Volatile chemical products (VCPs) are commonly used consumer and industrial items that are an important source of anthropogenic emissions. Organic compounds from VCPs evaporate on atmospherically relevant timescales and include many species that are secondary organic aerosol (SOA) precursors. However, the chemistry leading to SOA, particularly that of intermediate-volatility organic compounds (IVOCs), has not been fully represented in regional-scale models such as the Community Multiscale Air Quality (CMAQ) model, which tend to underpredict SOA concentrations in urban areas. Here we develop a model to represent SOA formation from VCP emissions. The model incorporates a new VCP emissions inventory and employs three new classes of emissions: siloxanes, oxygenated IVOCs, and nonoxygenated IVOCs. VCPs are estimated to produce 1.67gggm-3 of noontime SOA, doubling the current model predictions and reducing the SOA mass concentration bias from -75g% to -58g% when compared to observations in Los Angeles in 2010. While oxygenated and nonoxygenated intermediate-volatility VCP species are emitted in similar quantities, SOA formation is dominated by the nonoxygenated IVOCs. Formaldehyde and SOA show similar relationships to temperature and bias signatures, indicating common sources and/or chemistry. This work suggests that VCPs contribute up to half of anthropogenic SOA in Los Angeles and models must better represent SOA precursors from VCPs to predict the urban enhancement of SOA. © 2021 Elyse A. Pennington et al.
语种	英语
scopus关键词	aerosol composition; anthropogenic source; concentration (composition); formation mechanism; modeling; prediction; timescale; urban atmosphere; volatile organic compound; volatile substance; California; Los Angeles [California]; United States
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246365
作者单位	Oak Ridge Institute for Science and Education, Office of Research and Development, Us Environmental Protection Agency, Research Triangle Park, NC 27711, United States; Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, United States; Office of Research and Development, Us Environmental Protection Agency, Research Triangle Park, NC 27711, United States; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
推荐引用方式 GB/T 7714	Pennington E.A.,Seltzer K.M.,Murphy B.N.,et al. Modeling secondary organic aerosol formation from volatile chemical products[J],2021,21(24).
APA	Pennington E.A.,Seltzer K.M.,Murphy B.N.,Qin M.,Seinfeld J.H.,&Pye H.O.T..(2021).Modeling secondary organic aerosol formation from volatile chemical products.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(24).
MLA	Pennington E.A.,et al."Modeling secondary organic aerosol formation from volatile chemical products".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.24(2021).