气候变化领域集成服务门户(CCPortal): Impact of halogen chemistry on summertime air quality in coastal and continental Europe: Application of the CMAQ model and implications for regulation

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DOI	10.5194/acp-19-15321-2019
	Impact of halogen chemistry on summertime air quality in coastal and continental Europe: Application of the CMAQ model and implications for regulation
	Li Q.; Borge R.; Sarwar G.; De La Paz D.; Gantt B.; Domingo J.; Cuevas C.A.; Saiz-Lopez A.
发表日期	2019
ISSN	16807316
起始页码	15321
结束页码	15337
卷号	19 期号:24
英文摘要	Halogen (Cl, Br, and I) chemistry has been reported to influence the formation of secondary air pollutants. Previous studies mostly focused on the impact of chlorine species on air quality over large spatial scales. Very little attention has been paid to the effect of the combined halogen chemistry on air quality over Europe and its implications for control policy. In the present study, we apply a widely used regional model, the Community Multiscale Air Quality Modeling System (CMAQ), incorporated with the latest halogen sources and chemistry, to simulate the abundance of halogen species over Europe and to examine the role of halogens in the formation of secondary air pollution. The results suggest that the CMAQ model is able to reproduce the level of O3, NO2, and halogen species over Europe. Chlorine chemistry slightly increases the levels of OH, HO2, NO3, O3, and NO2 and substantially enhances the level of the Cl radical. Combined halogen chemistry induces complex effects on OH (ranging from -0:023 to 0.030 pptv) and HO2 (in the range of -3:7 to 0.73 pptv), significantly reduces the concentrations of NO3 (as much as 20 pptv) and O3 (as much as 10 ppbv), and decreases NO2 in highly polluted regions (as much as 1.7 ppbv); it increases NO2 (up to 0.20 ppbv) in other areas. The maximum effects of halogen chemistry occur over oceanic and coastal regions, but some noticeable impacts also occur over continental Europe. Halogen chemistry affects the number of days exceeding the European Union target threshold for the protection of human beings and vegetation from ambient O3. In light of the significant impact of halogen chemistry on air quality, we recommend that halogen chemistry be considered for inclusion in air quality policy assessments, particularly in coastal cities. © 2019 Author(s).
语种	英语
scopus关键词	air quality; atmospheric chemistry; atmospheric modeling; atmospheric pollution; halogen; regulatory framework; summer; Europe
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/143970
作者单位	Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, 28006, Spain; Environmental Modelling Laboratory, Department of Chemical and Environmental Engineering, Universidad Politécnica de Madrid (UPM), Madrid, Spain; National Exposure Research Laboratory, Environmental Protection Agency, Research Triangle Park, NC 27711, United States; Office of Air Quality Planning and Standards, Environmental Protection Agency, Research Triangle Park, NC 27711, United States
推荐引用方式 GB/T 7714	Li Q.,Borge R.,Sarwar G.,et al. Impact of halogen chemistry on summertime air quality in coastal and continental Europe: Application of the CMAQ model and implications for regulation[J],2019,19(24).
APA	Li Q..,Borge R..,Sarwar G..,De La Paz D..,Gantt B..,...&Saiz-Lopez A..(2019).Impact of halogen chemistry on summertime air quality in coastal and continental Europe: Application of the CMAQ model and implications for regulation.Atmospheric Chemistry and Physics,19(24).
MLA	Li Q.,et al."Impact of halogen chemistry on summertime air quality in coastal and continental Europe: Application of the CMAQ model and implications for regulation".Atmospheric Chemistry and Physics 19.24(2019).