Climate Change Data Portal
| DOI | 10.1016/j.scitotenv.2024.170484 |
| Meteorological influence on persistent O3 pollution events in Wuxi in the Yangtze River Delta, China | |
| 发表日期 | 2024 |
| ISSN | 0048-9697 |
| EISSN | 1879-1026 |
| 起始页码 | 917 |
| 卷号 | 917 |
| 英文摘要 | The number of O-3 pollution days indicates an overall increasing trend over 2014-2021 in Wuxi in the Yangtze River Delta, with the pollution concentrations of MDA8-O-3 between 186 and 200 mu g.m(-3). Specifically, a total of 62 POPEs (persistent O-3 pollution events), defined as episodes with 3 or more continuous O-3 pollution days, were observed for the 8 years. Using a multi-linear regression model, we find that the meteorology can explain approximately 56.5 % of the O-3 variations for the 8 years in Wuxi, with temperature being the most crucial meteorological factor, followed by relative humidity (RH) and wind speeds. High temperature, low RH, low wind speeds and downward airflows significantly correlate with POPE -O-3 changes. Three types of synoptic circulations are further identified during the POPEs from 2014 to 2021 by the T -mode (T-PCA) classification method. The primary circulation patterns governing the interannual changes of POPEs are characterized by the largest positive anomalies of temperature and planetary boundary layer (PBL) height; moreover, a distinct vertical mixing process is observed with uplifting airflows in the convective PBL during the afternoon and sinking airflows in the stable PBL at night, which is incredibly conducive to the downward transport of O-3 after its upward delivery during daytime and substantially contributes to midnight O-3 at the surface. The other two circulation types are associated with uniform descending flows in the PBL; as a result, surface O-3 accumulates only near the ground and decreases significantly at night due to the titration effect. This study systematically highlights the influence of critical meteorological factors regulated by different synoptic circulations on the POPE in Wuxi, which provides a scientific basis for pollution control and prediction. |
| 英文关键词 | Persistent O-3 pollution; Synoptic circulation; Meteorological factors; Principal component analysis |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001176167800001 |
| 来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/302854 |
| 作者单位 | Wuxi University; China Meteorological Administration; Nanjing University of Information Science & Technology |
| 推荐引用方式 GB/T 7714 | . Meteorological influence on persistent O3 pollution events in Wuxi in the Yangtze River Delta, China[J],2024,917. |
| APA | (2024).Meteorological influence on persistent O3 pollution events in Wuxi in the Yangtze River Delta, China.SCIENCE OF THE TOTAL ENVIRONMENT,917. |
| MLA | "Meteorological influence on persistent O3 pollution events in Wuxi in the Yangtze River Delta, China".SCIENCE OF THE TOTAL ENVIRONMENT 917(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
