2019—2023 年聊城市 PM2.5 和 O3 质量浓度变化特征的相关性分析及气象因素影响研究
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关键词：聊城市； PM2.5 03 ;时空分布特征;相关性分析；气象因子中图分类号：X831;X51 文献标志码：A 文章编号：1002-4026（2026）01-0133-11
开放科学（资源服务）标志码（OSID）
Research oncorrelations between variations in PM2.5 and O3 concentrations
and impacts of meteorological factors in Liaocheng from 2019 to 2023
LI Jing'，JIANG Na'， DONG Yuan'，WANG Jinye'， MENG Jingjing² （1.Liaocheng Ecological &Environmental Monitoring Centre of Shandong Province，Liaocheng 2520oo，China; 2.School of Geography and Environment，Liaocheng University，Liaocheng 2520o0，China）
Abstract：To investigate the characteristicsof atmosphericcompositeplutionand meteorological driving mechanismsin medium-sized industrialcities，this studysystematicall analyzed thespatiotemporal variationsandsynergisticffctsof PM2.5 and ozone （ O3 ）based on air quality data from five national stations and eight county-level monitoring stations in Liaocheng City from 2019 to 2023. The results showed that the annual average PM2.5 concentration exhibited a fluctuating downward trend but rebounded in 2023 with increased extreme values. O3 concentrations displayed a“decline followed by rise”pattern，peaking at 230.0μg/m3 in June during the summer pollution season. Correlation analysis revealed that PM2.5 （204 and O3 polution showed apositive correlation in summer and a negative corelation in winter，Among various meteorological factors，temperature exhibited a significant positive effect on O3 formation. When humidity was in the 60%-70% range，the risk ofsimultaneous PM2.5 and O3 exceedance increased.Wind analysis furthershowed that O3 exceedancespredominantly occurred under the presence of southerly winds（0 to 7.5m/s ），displaying a distinct“red tongue”extension pattern，while calm and westerly winds exacerbated PM2.5 concentration.
Key words ： Liaocheng; PM2.5 ; O3 ； spatiotemporal distribution；correlation analysis；meteorological factors
自从我国2013年实施《大气污染防治行动计划》以来，全国空气环境质量得到显著改善[1]，细颗粒物（ PM2.5 ）质量浓度及超标天数逐渐降低，但是质量浓度仍显著高于世界卫生组织标准（ 10μg/m3 ），同时臭氧（ |03| ）污染问题日益突出，2022 年《生态环境状况公报》数据显示，在339个地级及以上城市中，以 PM2.5 和 O3 为首要污染物的超标天数占全部超标天数的比例超过 80% [2-3]，有研究表明 PM2.5 能够通过人体上呼吸道组织直接进入肺泡， O3 污染会危害到人体的呼吸系统和心血管系统[45]，应该引起人们的高度重视。（剩余12057字）
