| Title: | Divergent summertime surface O(3) pollution formation mechanisms in two typical Chinese cities in the Beijing-Tianjin-Hebei region and Fenwei Plain |
| Author(s): | Li C; Li F; Cheng Q; Guo Y; Zhang Z; Liu X; Qu Y; An J; Liu Y; Zhang S; |
| Address: | "State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Jining Ecological Environment Monitoring Center, Jining 272000, China. Dongchangfu Branch of Liaocheng Ecological Environment Bureau, Liaocheng 252000, China. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: liuxingang@bnu.edu.cn. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. Electronic address: quyu@mail.iap.ac.cn" |
| DOI: | 10.1016/j.scitotenv.2023.161868 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Recently, severe summertime ozone (O(3)) pollution has swept across most areas of China, especially the Beijing-Tianjin-Hebei (BTH) region and Fenwei Plain. By focusing on Beijing and Yuncheng, which are two typical cities in the BTH region and the Fenwei Plain, we intended to reveal the neglected fact that they had disparate emission features and atmospheric movements but suffered from similar high-O(3) pollution levels. Field observations indicated that Yuncheng had lower volatile organic compound (VOC) and NO(x) concentrations but higher background O(3) levels. The model simulation verified that both photochemical reactions and net O(3) generation were stronger in Beijing. Ultimately, faster net O(3) generation rates (8.4 ppbv/h) plus lower background O(3) values in Beijing and lower net O(3) generation rates (6.2 ppbv/h) plus higher background O(3) values in Yuncheng caused both regions to reach similar O(3) peak values in July 2020. However, different O(3) control measures were appropriate for the two cities according to the different simulated O(3)-VOCs-NO(x) responses. Additionally, as surface O(3) levels are greatly affected by the ongoing O(3) production/depletion process that occurs in three dimensions, exploring the effects of spatially distributed O(3) on surface O(3) should be high on the agenda in the future" |
| Keywords: | O(3) pollution formation mechanism Photochemical reaction Process analysis VOCs WRF-Chem; |
| Notes: | "PubMed-not-MEDLINELi, Chenlu Li, Feng Cheng, Qiang Guo, Yitian Zhang, Ziyin Liu, Xingang Qu, Yu An, Junling Liu, Yafei Zhang, Siqing eng Netherlands 2023/02/03 Sci Total Environ. 2023 Apr 20; 870:161868. doi: 10.1016/j.scitotenv.2023.161868. Epub 2023 Jan 31" |
