Diurnal emission variation of ozone precursors: Impacts on ozone formation during Sep. 2019
文献类型：期刊论文
| 作者 | Tang, Yifan4; Wang, Yuchen2,4; Chen, Xuwu5; Liang, Jie4; Li, Shuai4; Chen, Gaojie1; Chen, Zuo3; Tang, Binxu4; Zhu, Jiesong4; Li, Xiaodong4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-06-15 |
| 卷号 | 929页码:11 |
| 关键词 | Ozone WRF-Chem Ozone precursor Atmospheric oxidation |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2024.172591 |
| 英文摘要 | With the issue of ozone (O3) pollution having increasingly gained visibility and prominence in China, the Chinese government explored various policies to mitigate O3 pollution. In some provinces and cities, diurnal regulations of O3 precursor were implemented, such as shifting O3 precursor emission processes to nighttime and offering preferential refueling at night. However, the effectiveness of these policies remains unverified, and their impact on the O3 generation process requires further elucidation. In this study, we utilized a regional climate and air quality model (WRF-Chem, v4.5) to test three scenarios aimed at exploring the impact of diurnal industry emission variation of O3 precursors on O3 formation. Significant O3 variations were observed mainly in urban areas. Shifting volatile organic compounds (VOCs) to nighttime have slight decreased daytime O3 levels while moving nitrogen oxides (NOx) to nighttime elevates O3 levels. Simultaneously moving both to nighttime showed combined effects. Process analysis indicates that the diurnal variation in O3 was mainly attributed to chemical process and vertical mixing in urban areas, while advection becomes more important in non-urban areas, contributing to the changes in O3 and O3 precursors levels through regional transportation. Further photochemical analysis reveals that the O3 photochemical production in urban areas was affected by reduced daytime O3 precursors emissions. Specifically, decreasing VOCs lowered the daytime O3 production by reducing the ROx radicals (ROx = HO center dot + HO(center dot)2 + RO(center dot)2), whereas decreasing NOx promoted the daytime O3 production by weakening ROx radical loss. Our results demonstrate that diurnal regulation of O3 precursors will disrupt the ROx radical and O3 formation in local areas, resulting in a change in O3 concentration and atmospheric oxidation capacity, which should be considered in formulating new relevant policies. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001237179600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78537]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Li, Xiaodong |
| 作者单位 | 1.Hunan Univ, Coll Math & Econometr, Changsha 410082, Hunan, Peoples R China 2.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.Hunan Univ, Coll Informat Sci & Engn, Changsha 410082, Peoples R China 4.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China 5.Hunan Univ Technol & Business, Sch Adv Interdisciplinary Studies, Changsha 410205, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Yifan,Wang, Yuchen,Chen, Xuwu,et al. Diurnal emission variation of ozone precursors: Impacts on ozone formation during Sep. 2019[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,929:11. |
| APA | Tang, Yifan.,Wang, Yuchen.,Chen, Xuwu.,Liang, Jie.,Li, Shuai.,...&Li, Xiaodong.(2024).Diurnal emission variation of ozone precursors: Impacts on ozone formation during Sep. 2019.SCIENCE OF THE TOTAL ENVIRONMENT,929,11. |
| MLA | Tang, Yifan,et al."Diurnal emission variation of ozone precursors: Impacts on ozone formation during Sep. 2019".SCIENCE OF THE TOTAL ENVIRONMENT 929(2024):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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