宜昌东部城市O_(3)污染与气象关联分析和潜在源区研究——以枝江市为例  

Correlation Analysis and Potential Source Area of O_(3)Pollution and Meteorology in Eastern Yichang City——A Case Study of Zhijiang

作　　者：王金林 姚宇飞 王振楠 杨如春 曹世凯 Wang Jinlin;Yao Yufei;Wang Zhennan;Yang Ruchun;Cao Shikai(Yichang Ecological Environment Bureau Zhijiang Branch Bureau,Zhijiang 443200,China;China Sciences MapUniverse Technology Co.,Ltd,Beijing 100101,China)

机构地区：[1]宜昌市生态环境局枝江市分局,湖北枝江443200 [2]中科宇图科技股份有限公司,北京100101

出　　处：《环境科学与管理》2025年第4期58-63,共6页Environmental Science and Management

摘　　要：为了解枝江市O_(3)的污染特征及潜在来源,利用枝江市2018年-2022年期间在线监测数据及气象数据,对枝江市O_(3)浓度变化特征、气象因素及潜在源区进行了分析。结果表明:枝江市O_(3)-8 h浓度逐月变化呈“双峰”型,6月、9月O_(3)月均浓度较高。O_(3)污染日高空天气形势以副高、西风气流等控制为主,地面多处于弱气压场、均压场控制。O_(3)污染日较非污染日的气温高、湿度低、风速小。气温大于25℃时,易出现O_(3)污染过程,在湿度为60%~70%、日均风速≤2 m/s时,O_(3)超标率较高。湖北省内局地环流对枝江市O_(3)污染贡献更显著,其次湖南北部的传输也会增加O_(3)污染程度。In order to understand the pollution characteristics and potential sources of O_(3)in Zhijiang,the online monitoring data and meteorological data of Zhijiang during 2018-2022 were used to analyze the change characteristics,meteorological influencing factors and potential source areas of O_(3)in Zhijiang.The results show that:In Zhijiang,the monthly variation of O_(3)-8 h concentration presents a“double-peak”pattern,with the monthly average concentration of O_(3)in June and September being higher.The high altitude situation of O_(3)pollution day in Zhijiang is mainly controlled by subtropical high,westerly flowand other weather conditions,and the ground is mostly controlled by weak pressure field and pressure leveling field.Compared with non-polluted days,O_(3)pollution days have higher temperature,lower humidity and lower wind speed.When the temperature is greater than 25°C,O_(3)pollution is easy to occur.When the humidity is 60%to 70%and the average daily wind speed is less than 2 m/s,the O_(3)exceeding rate is high.The local circulation in Hubei Province contributed more significantly to the O_(3)pollution in Zhijiang City,and the transmission in northern Hunan province also increased the O_(3)pollution level.

关 键 词：O_(3) 气象因子 污染特征 后向轨迹 潜在源分析 

分 类 号：X511[环境科学与工程—环境工程]