气候变化领域集成服务门户(CCPortal): On the effectiveness of short-term intensive emission controls on ozone and particulate matter in a heavily polluted megacity in central China

CCPortal

DOI	10.1016/j.atmosenv.2020.118111
	On the effectiveness of short-term intensive emission controls on ozone and particulate matter in a heavily polluted megacity in central China
	Su F.; Xu Q.; Wang K.; Yin S.; Wang S.; Zhang R.; Tang X.; Ying Q.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	Intensive temporary air pollution control measures were implemented in Zhengzhou (ZZ), a megacity in central China, and six neighboring cities during the 2019 National Games of Ethnic Minorities. The Community Multiscale Air Quality (CMAQ) model and a high-resolution local emission inventory were applied to evaluate the control measures. Reductions of ~35–60% of primary PM (PPM), 45–65% of VOCs, ~5% of NH3, 35–45% of NOx, and 30–70% of SO2 emissions in the central area (i.e., ZZ) and collaborative cities (i.e., the six neighboring cities) lead to significant reductions of daily PM2.5 by 25–45% in ZZ. Hourly concentrations of PM2.5 are reduced by as much as 100 μg m−3. Most of the reduction in PM2.5 is due to primary PM, and NO3−, SO42−, and NH4+ ion concentrations only decrease by 5–6%. Emission reductions in the collaborative cities contribute to 10–30% of the decrease in PM2.5 and PM10 in ZZ. Concentrations of daily maximum 8-hr (DM8H) O3 increase by 2–5% on high O3 days. Isopleth analysis suggests that the local molar reductions ratio of NOx to VOC needs to be < 0.5 to avoid the increases. More stable meteorology conditions make emission controls in ZZ more effective for PM2.5 and PM10 but lead to higher increases in DM8H O3. These results suggest that control of PPM emissions in ZZ is the most effective in reducing PM2.5 and PM10. However, reductions of precursor gaseous in ZZ and the six neighboring cities alone are not effective in reducing the secondary PM components and most likely lead to increases in DM8H O3. © 2020 Elsevier Ltd
关键词	Air quality model Emission reduction O3 isopleth PM2.5 WRF-CMAQ
语种	英语
scopus关键词	Air quality; Ammonia; Emission control; Molar ratio; Nitrogen oxides; Particles (particulate matter); Sulfur dioxide; Community multi-scale air qualities; Control measures; Emission reduction; Ethnic minorities; High resolution; Ion concentrations; Local emissions; Particulate Matter; Quality control; ammonia; nitrogen oxide; ozone; sulfur dioxide; volatile organic compound; air quality; atmospheric pollution; concentration (composition); emission control; megacity; ozone; particulate matter; pollution incidence; air pollution control; Article; China; city; concentration (parameter); controlled study; meteorology; molecular stability; particulate matter; particulate matter 2.5; priority journal; reduction (chemistry)
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248696
作者单位	College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China; Institute of Environmental Sciences, Zhengzhou University, Zhengzhou, 450001, China; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China; Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX 77843-3136, United States
推荐引用方式 GB/T 7714	Su F.,Xu Q.,Wang K.,et al. On the effectiveness of short-term intensive emission controls on ozone and particulate matter in a heavily polluted megacity in central China[J],2021,246.
APA	Su F..,Xu Q..,Wang K..,Yin S..,Wang S..,...&Ying Q..(2021).On the effectiveness of short-term intensive emission controls on ozone and particulate matter in a heavily polluted megacity in central China.ATMOSPHERIC ENVIRONMENT,246.
MLA	Su F.,et al."On the effectiveness of short-term intensive emission controls on ozone and particulate matter in a heavily polluted megacity in central China".ATMOSPHERIC ENVIRONMENT 246(2021).