气候变化领域集成服务门户(CCPortal): Investigating the mechanism of morning ozone concentration peaks in a petrochemical industrial city

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DOI	10.1016/j.atmosenv.2021.118897
	Investigating the mechanism of morning ozone concentration peaks in a petrochemical industrial city
	Guo W.; Chen Q.; Yang Y.; Zhang Y.; Liu X.; Zhang R.; Zhu Y.; Li G.; Liu P.; Chen M.
发表日期	2021
ISSN	1352-2310
英文摘要	The temporal variation in ground-level ozone (O3) is influenced by photochemical reactions associated with solar radiation and usually culminates in the afternoon. However, Lanzhou, a petrochemical industrial city located in a river valley in northwestern China, often experiences morning O3 concentration peaks, which has not been reported in previous studies. We defined the morning ozone peak (MOP) phenomenon as a daily maximum hourly O3 concentration that occurs in the morning (9:00–12:00, local time). Observations from May to August 2015–2018 showed that the proportion of MOP days to the total number of days was 32.5% at the LH station in Lanzhou. The Weather Research and Forecasting model coupled with chemistry (WRF-Chem) was employed to clarify the physical and chemical causes of the MOP phenomenon in the summer of 2016. Compared to the observations, the WRF-Chem model reproduced local meteorological circulation conditions and performed well in MOP simulations. The results indicated that the mountain topography and urban underlying surface did not alter the morning peak of O3. On MOP days, the contributions of photochemical reactions and the vertical downward transport of O3 to MOP formation were 60.2% and 39.8% at the LH station, respectively. Alkenes accounted for more than 65% of the initial VOC reactivity. The MOP phenomenon disappeared after alkenes emitted from the petrochemical industry were deactivated. Therefore, to control MOP events in Lanzhou, we should focus on alkene emissions reduction. This study is highly important to better understand the mechanism of O3 formation and provides basic information for developing scientific O3 pollution control strategies and improving the air quality in industrial cities. © 2021
关键词	Alkene emissions IRR Ozone pollution PERMM Petrochemical industry
语种	英语
scopus关键词	Air quality; Emission control; Olefins; Ozone; Petrochemicals; Quality control; Topography; Weather forecasting; Alkene emission; Industrial city; IRR; Lanzhou; Ozone concentration; Ozone peak; Ozone pollution; PERMM; Petrochemical industry; WRF/Chem; Photochemical reactions
来源期刊	ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248771
作者单位	Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China; Northwest Institute of Eco-environmental Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Gansu Environmental Monitoring Center, Lanzhou, 730000, China; School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou, 730000, China
推荐引用方式 GB/T 7714	Guo W.,Chen Q.,Yang Y.,et al. Investigating the mechanism of morning ozone concentration peaks in a petrochemical industrial city[J]. 中国科学院西北生态环境资源研究院,2021.
APA	Guo W..,Chen Q..,Yang Y..,Zhang Y..,Liu X..,...&Chen M..(2021).Investigating the mechanism of morning ozone concentration peaks in a petrochemical industrial city.ATMOSPHERIC ENVIRONMENT.
MLA	Guo W.,et al."Investigating the mechanism of morning ozone concentration peaks in a petrochemical industrial city".ATMOSPHERIC ENVIRONMENT (2021).