气候变化领域集成服务门户(CCPortal): Assessment of Atmospheric Oxidizing Capacity Over the Beijing-Tianjin-Hebei (BTH) Area, China

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DOI	10.1029/2020JD033834
	Assessment of Atmospheric Oxidizing Capacity Over the Beijing-Tianjin-Hebei (BTH) Area, China
	Feng T.; Zhao S.; Hu B.; Bei N.; Zhang X.; Wu J.; Li X.; Liu L.; Wang R.; Tie X.; Li G.
发表日期	2021
ISSN	2169897X
卷号	126 期号:7
英文摘要	The atmospheric oxidizing capacity (AOC) plays a key role in atmospheric chemistry, determining the removal of most reduced gases in the atmosphere. In this study, we assess the summertime AOC from 7 to 22 June 2014 associated with a field campaign conducted at Wangdu in the Beijing-Tianjin-Hebei region (BTH), China using the WRF-Chem model. The model reasonably well reproduces the incident solar radiation, ambient O3 and fine particulate matter (PM2.5) concentrations, the photolysis rates of O3 and NO2, and radical concentrations against measurements in the BTH. The model results show high daytime AOC levels in urban areas and relatively low AOC in remote areas of the BTH. The diurnal cycle of the AOC exhibits a unimodal pattern with peaks at noon. OH radical contributes about 68% of the daily average AOC in Beijing, followed by O3 (27%) and NO3 (5%). At Wangdu, the production rate of OH radical reaches around 13 ppb h−1 at noon, which is mainly resulted from the reaction of HO2 with NO. The OH radical loss is primarily contributed by reactions with volatile organic compounds, followed by CO and NO2. Statistically, the population hourly or afternoon average O3 and Ox (=O3 + NO2) concentrations are significantly correlated with the AOC in Beijing, constituting potential simplified tracers to indicate the AOC level. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	atmospheric oxidizing capacity; OH radical; ozone; WRF-Chem
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185367
作者单位	Department of Geography & Spatial Information Techniques, Ningbo University, Ningbo, China; Key Lab of Aerosol Chemistry and Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Institute of East China Sea, Ningbo University, Ningbo, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, China
推荐引用方式 GB/T 7714	Feng T.,Zhao S.,Hu B.,et al. Assessment of Atmospheric Oxidizing Capacity Over the Beijing-Tianjin-Hebei (BTH) Area, China[J],2021,126(7).
APA	Feng T..,Zhao S..,Hu B..,Bei N..,Zhang X..,...&Li G..(2021).Assessment of Atmospheric Oxidizing Capacity Over the Beijing-Tianjin-Hebei (BTH) Area, China.Journal of Geophysical Research: Atmospheres,126(7).
MLA	Feng T.,et al."Assessment of Atmospheric Oxidizing Capacity Over the Beijing-Tianjin-Hebei (BTH) Area, China".Journal of Geophysical Research: Atmospheres 126.7(2021).