秦皇岛市2018-2022年臭氧污染特征分析OACSTPCD

The characteristics of ozone pollution in Qinhuangdao from 2018 to 2022 were analyzed,to provide relevant the theoretical basis for prevention and control of ozone pollution in Qinhuangdao in the future.In this paper,the air quality data,meteorological observation data and change characteristics of typical pollution process were compared and analyzed,the results showed that:(1)The seasonal trend of ozone concentration in Qinhuangdao was summer＞spring＞autumn＞winter;the peak concentration was in June;diurnal variation of O3 was"unimodal",the valley time was same as the surrounding cities;and the peak value was 1～2 hours later.(2)The frequency of ozone pollution in Qinhuangdao was higher when the daily maximum temperature was 29～30℃;the wind direction was south and southwest;and the wind level was 2～3.(3)A typical ozone pollution case study showed that the ozone pollution process in Qinhuangdao was obviously affected by transmission effect.The research results can provide theoretical reference for ozone pollution control in this area and for other regions to carry out relevant researches.