摘要
选取2015年-2020年太原市臭氧日最大8 h滑动平均(O_(3)-8h)浓度和气象资料,分析了O_(3)-8h浓度的变化特征及其影响因素。结果表明:太原市O_(3)-8h浓度年均值呈线性上升趋势;季节变化为夏季>春季>秋季>冬季;月变化曲线呈倒“v”状。臭氧超标日主要出现在5-8月。随着日最高气温(日照时数)的升高、气压的降低,O_(3)-8h浓度分别呈指数和线性增加的趋势。臭氧污染较为严重时,地面天气形势多为低压前部或均压场,高空受西南或偏南气流控制,日最高气温在30℃以上,日照时数在10 h以上,气压在925 hPa以下,几乎不存在降水。
The maximum 8 h moving mean daily ozone(O_(3)-8h)concentration and meteorological data in Taiyuan City from 2015 to 2020 were selected to analyze the variation characteristics of O_(3)-8h concentration and its influencing factors.The results showed that:the annual mean value of O_(3)-8h concentration in Taiyuan City showed a linear increasing trend.The seasonal variation of O_(3)-8h concentration was summer>spring>autumn>winter.The monthly variation curve of O_(3)-8h concentration presented an inverted“v”shape.The days when ozone exceeds the standard mainly occur from May to August.With the increase of daily maximum temperature(sunshine duration)and the decrease of air pressure,the concentration of O_(3)-8h increased exponentially and linearly,respectively.When ozone pollution was serious in Taiyuan City,the surface weather situation was mostly in the front of low pressure or pressure field,the upper air was controlled by southwest or south airflow,the daily maximum temperature was above 30℃,the sunshine duration was above 10 h,the air pressure was below 925 hPa,and there was almost no precipitation.
作者
王娇
姚闯
李树文
张泽秀
Wang Jiao;Yao Chuang;Li Shuwen;Zhang Zexiu(Taiyuan Meteorological Bureau of Shanxi Province,Taiyuan 030002,China;Shanxi Climate Center,Taiyuan 030002,China)
出处
《环境科学与管理》
CAS
2023年第8期88-93,共6页
Environmental Science and Management
基金
2022年度山西省气象局科研项目(SXKQNQH20226343)
2023年度山西省气象局科研项目(SXKMSQH20236308)。
关键词
O_(3)-8h浓度
气象条件
环流特征
concentration of O_(3)-8h
meteorological conditions
circulation characteristics
作者简介
王娇(1995-),女,硕士研究生,助理工程师,研究方向:温室气体和天气分析;通信作者:姚闯。
