| Rural vehicle emission as an important driver for the variations of summertime tropospheric ozone in the Beijing-Tianjin-Hebei region during 2014-2019 | |
Song, Yifei ; Zhang, Yuanyuan; Liu, Junfeng; Zhang, Chenglong; Liu, Chengtang; Liu, Pengfei; Mu, Yujing
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| 2022-04 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES
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| ISSN | 1001-0742 |
| Volume | 114Issue:0Pages:126-135 |
| Abstract | Tropospheric ozone (O-3) pollution is increasing in the Beijing-Tianjin-Hebei (BTH) region de-spite a significant decline in atmospheric fine aerosol particles (PM2.5) in recent years. How-ever, the intrinsic reason for the elevation of the regional O-3 is still unclear. In this study, we analyzed the spatio-temporal variations of tropospheric O-3 and relevant pollutants (PM2.5, NO2, and CO) in the BTH region based on monitoring data from the China Ministry of Ecology and Environment during the period of 2014-2019. The results showed that summertime O-3 concentrations were constant in Beijing (BJ, 0.06 pg/(m(3).year)) but increased significantly in Tianjin (TJ, 9.09 pg/(m(3).year)) and Hebei (HB, 6.06 pg/(m(3).year)). Distinct O-3 trends between Beijing and other cities in BTH could not be attributed to the significant decrease in PM2.5 (from-5.08 to-6.32 pg/(m(3).year)) and CO (from-0.053 to-0.090 mg/(m(3).year)) because their decreasing rates were approximately the same in all the cities. The relatively stable O-3 con-centrations during the investigating period in BJ may be attributed to a faster decreasing rate of NO2 (BJ:-2.55 pg/(m(3).year); TJ:-1.16 pg/(m(3).year); HB:-1.34 pg/(m(3).year)), indicating that the continued reduction of NOx will be an effective mitigation strategy for reducing regional O-3 pollution. Significant positive correlations were found between daily maximum 8 hr average (MDA8) O-3 concentrations and vehicle population and highway freight trans-portation in HB. Therefore, we speculate that the increase in rural NOx emissions due to the increase in vehicle emissions in the vast rural areas around HB greatly accelerates regional O-3 frmation, accounting for the significant increasing trends of O-3 in HB. (C) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| Department | 大气环境与污染控制实验室 ; 大气环境与污染控制实验室 |
| Keyword | GROUND-LEVEL OZONE SURFACE OZONE SIGNIFICANT INCREASE SOURCE APPORTIONMENT PARTICULATE MATTER O-3 CONCENTRATIONS CLIMATE-CHANGE AIR-QUALITY CHINA POLLUTION |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47425 |
| Collection | 大气环境与污染控制实验室 |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Urban Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Song, Yifei,Zhang, Yuanyuan,Liu, Junfeng,et al. Rural vehicle emission as an important driver for the variations of summertime tropospheric ozone in the Beijing-Tianjin-Hebei region during 2014-2019[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,114(0):126-135. |
| APA | Song, Yifei.,Zhang, Yuanyuan.,Liu, Junfeng.,Zhang, Chenglong.,Liu, Chengtang.,...&Mu, Yujing.(2022).Rural vehicle emission as an important driver for the variations of summertime tropospheric ozone in the Beijing-Tianjin-Hebei region during 2014-2019.JOURNAL OF ENVIRONMENTAL SCIENCES,114(0),126-135. |
| MLA | Song, Yifei,et al."Rural vehicle emission as an important driver for the variations of summertime tropospheric ozone in the Beijing-Tianjin-Hebei region during 2014-2019".JOURNAL OF ENVIRONMENTAL SCIENCES 114.0(2022):126-135. |
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| Rural vehicle emissi（2614KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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