气候变化领域集成服务门户(CCPortal): Contrasting chemical environments in summertime for atmospheric ozone across major Chinese industrial regions: The effectiveness of emission control strategies

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DOI	10.5194/acp-21-10689-2021
	Contrasting chemical environments in summertime for atmospheric ozone across major Chinese industrial regions: The effectiveness of emission control strategies
	Liu Z.; Doherty R.M.; Wild O.; Hollaway M.; O'Connor F.M.
发表日期	2021
ISSN	1680-7316
起始页码	10689
结束页码	10706
卷号	21 期号:13
英文摘要	The United Kingdom Chemistry and Aerosols (UKCA) chemistry-climate model is used to quantify the differences in chemical environment for surface O3 for six major industrial regions across China in summer 2016. We first enhance the UKCA gas-phase chemistry scheme by incorporating reactive volatile organic compound (VOC) tracers that are necessary to represent urban and regional-scale O3 photochemistry. We demonstrate that the model with the improved chemistry scheme captures the observed magnitudes and diurnal patterns of surface O3 concentrations across these regions well. Simulated O3 concentrations are highest in Beijing and Shijiazhuang on the North China Plain and in Chongqing, lower in Shanghai and Nanjing in the Yangtze River Delta, and lowest in Guangzhou in the Pearl River Delta despite the highest daytime O3 production rates in Guangzhou. NOx/VOC and H2O2/HNO3 ratios indicate that O3 production across all regions except Chongqing is VOC limited. We confirm this by constructing O3 response surfaces for each region changing NOx and VOC emissions and further contrast the effectiveness of measures to reduce surface O3 concentrations. In VOC-limited regions, reducing NOx emissions by 20% leads to a substantial O3 increase (11%) in Shanghai. We find that reductions in NOx emissions alone of more than 70% are required to decrease O3 concentrations across all regions. Reductions in VOC emissions alone of 20% produce the largest decrease (-11%) in O3 levels in Shanghai and Guangzhou and the smallest decrease (-1%) in Chongqing. These responses are substantially different from those currently found in highly populated regions in other parts of the world, likely due to higher NOx emission levels in these Chinese regions. Our work provides an assessment of the effectiveness of emission control strategies to mitigate surface O3 pollution in these major industrial regions and emphasises that combined NOx and VOC emission controls play a pivotal role in effectively offsetting high O3 levels. It also demonstrates new capabilities in capturing regional air pollution that will permit this model to be used for future studies of regional air-quality-climate interactions. © Copyright:
语种	英语
scopus关键词	atmospheric chemistry; concentration (composition); emission control; ozone; photochemistry; summer; tracer; volatile organic compound; Beijing [China]; China; Chongqing; Guangdong; Guangzhou; Hebei; Jiangsu; Nanjing [Jiangsu]; Shanghai; Shijiazhuang; Trachinotus falcatus
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/246729
作者单位	School of GeoSciences, The University of Edinburgh, Edinburgh, United Kingdom; Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; Centre for Ecology and Hydrology, Lancaster Environment Centre, Lancaster, United Kingdom
推荐引用方式 GB/T 7714	Liu Z.,Doherty R.M.,Wild O.,et al. Contrasting chemical environments in summertime for atmospheric ozone across major Chinese industrial regions: The effectiveness of emission control strategies[J],2021,21(13).
APA	Liu Z.,Doherty R.M.,Wild O.,Hollaway M.,&O'Connor F.M..(2021).Contrasting chemical environments in summertime for atmospheric ozone across major Chinese industrial regions: The effectiveness of emission control strategies.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(13).
MLA	Liu Z.,et al."Contrasting chemical environments in summertime for atmospheric ozone across major Chinese industrial regions: The effectiveness of emission control strategies".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.13(2021).