气候变化领域集成服务门户(CCPortal): Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China

CCPortal

DOI	10.5194/acp-21-15809-2021
	Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China
	Zhang S.; Sarwar G.; Xing J.; Chu B.; Xue C.; Sarav A.; Ding D.; Zheng H.; Mu Y.; Duan F.; Ma T.; He H.
发表日期	2021
ISSN	1680-7316
起始页码	15809
结束页码	15826
卷号	21 期号:20
英文摘要	We compare Community Multiscale Air Quality (CMAQ) model predictions with measured nitrous acid (HONO) concentrations in Beijing, China, for December 2015. The model with the existing HONO chemistry in CMAQ severely underestimates the observed HONO concentrations with a normalized mean bias of -97g%. We revise the HONO chemistry in the model by implementing six additional heterogeneous reactions in the model: the reaction of nitrogen dioxide (NO2) on ground surfaces, the reaction of NO2 on aerosol surfaces, the reaction of NO2 on soot surfaces, the photolysis of aerosol nitrate, the nitric acid displacement reaction, and the hydrochloric acid displacement reaction. The model with the revised chemistry substantially increases HONO predictions and improves the comparison with observed data with a normalized mean bias of -5g%. The photolysis of HONO enhances daytime hydroxyl radical by almost a factor of 2. The enhanced hydroxyl radical concentrations compare favorably with observed data and produce additional sulfate via the reaction with sulfur dioxide, aerosol nitrate via the reaction with nitrogen dioxide, and secondary organic aerosols via the reactions with volatile organic compounds. The additional sulfate stemming from revised HONO chemistry improves the comparison with observed concentration; however, it does not close the gap between model prediction and the observation during polluted days. © 2021 Shuping Zhang et al.
语种	英语
scopus关键词	air quality; atmospheric chemistry; atmospheric modeling; comparative study; concentration (composition); haze; nitrous acid; Beijing [China]; China
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/246482
作者单位	State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, 109 T.W. Alexander Drive, Research Triangle Park, NC 27711, United States; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Institute for the Environment, The University of North Carolina at Chapel Hill, 100 Europa Drive, Chapel Hill, NC 27514, United States
推荐引用方式 GB/T 7714	Zhang S.,Sarwar G.,Xing J.,et al. Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China[J],2021,21(20).
APA	Zhang S..,Sarwar G..,Xing J..,Chu B..,Xue C..,...&He H..(2021).Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(20).
MLA	Zhang S.,et al."Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.20(2021).