气候变化领域集成服务门户(CCPortal): Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period

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DOI	10.5194/acp-19-8651-2019
	Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period
	Ansari T.U.; Wild O.; Li J.; Yang T.; Xu W.; Sun Y.; Wang Z.
发表日期	2019
ISSN	16807316
起始页码	8651
结束页码	8668
卷号	19 期号:13
英文摘要	We explore the impacts of short-term emission controls on haze events in Beijing in October-November 2014 using high-resolution Weather Research and Forecasting model with Chemistry (WRF-Chem) simulations. The model reproduces surface temperature and relative humidity profiles over the period well and captures the observed variations in key atmospheric pollutants. We highlight the sensitivity of simulated pollutant levels to meteorological variables and model resolution and in particular to treatment of turbulent mixing in the planetary boundary layer. We note that simulating particle composition in the region remains a challenge, and we overpredict span classCombining double low line"inline-formula"NH4/span and span classCombining double low line"inline-formula"NO3/span at the expense of span classCombining double low line"inline-formula"SO4/span. We find that the emission controls implemented for the Asia-Pacific Economic Cooperation (APEC) summit period made a relatively small contribution to improved air quality (20 %-26 %), highlighting the important role played by favourable meteorological conditions over this period. We demonstrate that the same controls applied under less favourable meteorological conditions would have been insufficient in reducing pollutant levels to meet the required standards. Continued application of these controls over the 6-week period considered would only have reduced the number of haze days when daily mean fine particulate matter exceeds 75 span classCombining double low line"inline-formula"μg m-3/span from 15 to 13 d (days). Our study highlights the limitations of current emission controls and the need for more stringent measures over a wider region during meteorologically stagnant weather. © Author(s) 2019.
语种	英语
scopus关键词	air quality; Asian Pacific Economic Cooperation Forum; concentration (composition); emission control; haze; image resolution; particulate matter; Beijing [Beijing (ADS)]; 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/144298
作者单位	Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
推荐引用方式 GB/T 7714	Ansari T.U.,Wild O.,Li J.,et al. Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period[J],2019,19(13).
APA	Ansari T.U..,Wild O..,Li J..,Yang T..,Xu W..,...&Wang Z..(2019).Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period.Atmospheric Chemistry and Physics,19(13).
MLA	Ansari T.U.,et al."Effectiveness of short-term air quality emission controls: a high-resolution model study of Beijing during the Asia-Pacific Economic Cooperation (APEC) summit period".Atmospheric Chemistry and Physics 19.13(2019).