| 成渝地区臭氧生成敏感性时空分布及影响因素 |
| 摘要点击 978 全文点击 175 投稿时间：2023-12-06 修订日期：2024-04-17 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 臭氧检测仪（OMI） 臭氧生成敏感性（OFS） 时空分布 影响因素 成渝地区 |
| 英文关键词 ozone monitoring instrument （OMI） ozone formation sensitivity （OFS） spatial and temporal characteristics influencing factors Chengdu-Chongqing area |
| 作者 | 单位 | E-mail | | 胥雯 | 成都信息工程大学资源环境学院, 成都 610225 | 1347652665@qq.com | | 杨皓 | 成都信息工程大学资源环境学院, 成都 610225 | | | 何敏 | 成都信息工程大学资源环境学院, 成都 610225
成都平原城市气象与环境四川省野外科学观测研究站, 成都 610225 | hemin@cuit.edu.cn | | 杨震 | 成都信息工程大学资源环境学院, 成都 610225 | | | 张洋 | 成都信息工程大学资源环境学院, 成都 610225
成都平原城市气象与环境四川省野外科学观测研究站, 成都 610225 | | | 刘志红 | 成都信息工程大学资源环境学院, 成都 610225
成都平原城市气象与环境四川省野外科学观测研究站, 成都 610225 | | | 何雨明 | 四川省环保科技工程有限责任公司, 成都 610041 | |
|
| 中文摘要 |
| 为研究成渝地区臭氧生成敏感性变化特征,采用OMI卫星观测的对流层柱浓度FNR指示剂（HCHO/NO2）,分析夏季臭氧生成敏感性（OFS）,并基于地理探测器分析污染源排放、气象因子及其交互作用对OFS的影响. 结果表明：①成渝地区夏季OFS分区以协同控制区为主,面积占比约为42.42%；VOCs控制区较少,主要分布在成都市和重庆市主城区,面积占比约为16.37%；NOx控制区主要分布在雅安市、乐山市、宜宾市、泸州市以及重庆市东部,面积占比约为41.21%. ②从月份变化来看,6~8月,VOCs控制区面积逐渐减少,8月达到最低值,占比仅有3.53%,9月VOCs控制区面积增加显著. ③大气污染物（CO、PM2.5、NMVOC和NOx）排放是影响成渝地区夏季OFS的主要因素,随着排放量的增加,FNR逐渐减小,OFS趋向于VOCs控制区. ④地表大气压力（SP）、2 m气温（T2）,大气柱总水量（TCW）是影响成渝地区夏季OFS变化的3个主要气象因素,三者均与FNR呈负相关,SP、T2,TCW的值越大,OFS更趋向于VOCs控制. ⑤因子间的交互作用会加剧臭氧生成敏感性的变化,污染物和气象因子之间的交互作用是成渝地区夏季OFS变化的主要驱动力. |
| 英文摘要 |
| To study the characteristics of ozone formation sensitivity changes in the Chengdu-Chongqing area, the summer ozone formation sensitivity （OFS） was analyzed using satellite observation of the OMI tropospheric column concentration of HCHO and NO2. Additionally, the effects of meteorological factors, source emissions, and their interactions on OFS were identified with the geodetic detector. The results showed that the summer OFS zoning in the Chengdu-Chongqing area was dominated by a transitional regime, with an area share of 42.42%. Less VOCs-limited regime was observed, which was mainly distributed in the urban areas of Chengdu City and Chongqing Municipality, with an area share of 16.37%. The NOx-limited regime was mainly located in Ya'an City, Leshan City, Yibin City, Luzhou City, and the eastern part of Chongqing Municipality, with an area share of 41.21%. The area of the VOCs-limited regime gradually decreased from June to August and reached the lowest value in August, accounting for only 3.53%, and the area of the VOCs-limited regime increased significantly in September. Pollutant emissions （CO, PM2.5, NMVOC, and NOx） were the main factors affecting summer OFS in the Chengdu-Chongqing area. With the increase in emissions, the FNR gradually decreased, and the OFS tended to be the VOCs-limited regime. SP, T2, and TCW were the three main meteorological factors that affected the change in summer OFS in the Chengdu-Chongqing area. All three factors were negatively correlated with FNR； the larger the values of SP, T2, and TCW, the more easily OFS changed to a VOCs-limited regime. Interactions between factors exacerbated OFS changes and were the main drivers of spatial and temporal variations for summer OFS in the Chengdu-Chongqing area. |
|
|
|
