山东科学 ›› 2026, Vol. 39 ›› Issue (1): 133-143.doi: 10.3976/j.issn.1002-4026.2025022

• 环境与生态 • 上一篇    

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

李静1(), 姜娜1, 董原1, 王金业1, 孟静静2   

  1. 1.山东省聊城生态环境监测中心, 山东 聊城 252000
    2.聊城大学 地理与环境学院, 山东 聊城 252000
  • 收稿日期:2025-03-03 修回日期:2024-04-15 出版日期:2026-02-20 上线日期:2026-01-29
  • 作者简介:李静(1988—),硕士,高级工程师,研究方向为环境监测。E-mail:lijing198803118223@sina.com,Tel:15206358983
  • 基金资助:
    山东省自然科学基金(ZR2020MD113);国家自然科学基金(42177083)

Research oncorrelations between variations in PM2.5 and O3 concentrations and impacts of meteorological factors in Liaocheng from 2019 to 2023

LI Jing1(), JIANG Na1, DONG Yuan1, WANG Jinye1, MENG Jingjing2   

  1. 1. Liaocheng Ecological & Environmental Monitoring Centre of Shandong Province, Liaocheng 252000, China
    2. School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
  • Received:2025-03-03 Revised:2024-04-15 Published:2026-02-20 Online:2026-01-29

摘要:

为探究中等规模工业城市大气复合污染特征及气象驱动机制,基于2019—2023年聊城市5个国控站点和8个县级监测站的空气质量数据,系统分析了PM2.5与臭氧(O3)的时空变化规律及其协同效应。结果表明:PM2.5年均质量浓度呈波动下降趋势,但2023年出现反弹,极端值增加;O3质量浓度则呈现“先降后升”特征,夏季为污染高峰期,峰值出现在6月为230.0 μg/m3。相关性分析表明,PM2.5污染与O3污染夏季呈现正相关、冬季呈现负相关,中重度污染时两者协同上升。在各种气象因子中,温度对O3生成具有显著正反馈,湿度在60%~70%区间时O3与PM2.5复合超标风险同步升高。风向-风速分析表明,O3超标数据集中于南风(0~7.5 m/s)区间,呈现显著“红舌”延伸特征,西风静稳条件可加剧PM2.5累积。

关键词: 聊城市, PM2.5, O3, 时空分布特征, 相关性分析, 气象因子

Abstract:

To investigate the characteristics of atmospheric composite pollution and meteorological driving mechanisms in medium-sized industrial cities, this study systematically analyzed the spatiotemporal variations and synergistic effects of 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 230.0 μg/m3 in June during the summer pollution season. Correlation analysis revealed that PM2.5 and O3 pollution showed a positive correlation in summer and a negative correlation 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 of simultaneous PM2.5 and O3 exceedance increased. Wind analysis further showed that O3 exceedances predominantly occurred under the presence of southerly winds(0 to 7.5 m/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

中图分类号: 

  • X831

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