生态环境学报2025，Vol.34Issue(5)：720-730,11.DOI:10.16258/j.cnki.1674-5906.2025.05.006
基于不同类型臭氧污染日的臭氧污染特征及影响因素分析:以亳州市为例
Characterization of Ozone Pollution and Influencing Factors Based on Different Types of Ozone Pollution Days:A Case Study in Bozhou City
摘要
Abstract
Identifying the key influencing factors for different types of ozone(O3)pollution days is of great significance for the effective implementation of O3 pollution control measures.To elucidate the discrepancies in key precursors and meteorological factors influencing days with different types of O3 pollution,this study analyzed the pollution characteristics of different types of O3 pollution days in key regions from 2017 to 2022.Bozhou City,located at the intersection of Jiangsu,Anhui,Shandong,and Henan provinces,was selected as a typical subject to analyze the variation characteristics and differences in precursors and meteorological factors under different types of O3 pollution days.Additionally,correlation analysis,backward trajectory,and random forest methods were utilized to assess the meteorological conditions of O3 pollution,origins of air masses,and magnitude of influence of precursors and meteorological factors.The results showed the following:1)The increase in precursor concentrations was positively correlated with the proportion of days with high O3 exceedances(both the hourly O3 mass concentrations and daily maximum 8-hour average O3 mass concentrations exceeded the standards)and low O3 exceedances(the hourly O3 mass concentrations exceeded the standard,and the daily maximum 8-hour average O3 mass concentrations did not exceed the standard).When the daily NO2 concentration was between 30 and 40 μg·m-3,the proportion of days with high O3 exceedance reached 71.4%.When the daily average concentration of CO was less than 0.4 mg·m-3,the proportion of days with low O3 exceedances was 83.3%.2)The status of O3 pollution is closely related to meteorological conditions.When the daily average temperature was below 35℃,the increase in temperature was conducive to an increase in the O3 concentration,and the frequency of high-value exceedance days tended to increase.When the relative humidity was in the range of 50%-60%,the occurrence of high O3 exceedance days was more favorable.When the relative humidity was in the range of 60%-70%,the occurrence of low O3 exceedance days was more favorable.3)Days with high O3 exceedances were significantly influenced by air masses from the northwest and southeast,whereas days with low O3 exceedances were more affected by air masses from the south and northeast.4)Random forest results showed that for high O3 exceedance days,the relative humidity(40.9%)and temperature(26.4%)had significant effects.For days with low O3 exceedances,the relative humidity(30.4%)and NO2(26%)had significant effects.关键词
O3高低值超标/前体物/气象因素/后向轨迹/随机森林/亳州市Key words
O3 high and low value exceedance/precursors/meteorological factors/backward trajectory/random forest/Bozhou City分类
环境科学引用本文复制引用
张丹丹,王学中,毋振海,吴渴,毕方,李云凤,安聪,韩翼昕,刘正阳,朱玲..基于不同类型臭氧污染日的臭氧污染特征及影响因素分析:以亳州市为例[J].生态环境学报,2025,34(5):720-730,11.基金项目
中央级公益性科研院所基本科研业务费专项(2023YSKY-14) （2023YSKY-14）
亳州市大气"一市一策"技术支撑项目(BZSJ2022CG111) （BZSJ2022CG111）
