• 关键词：空气质量  大气污染  O₃  环流分型  广州

• 基金项目：广东省气象局科学技术研究项目（No.GRMC2021XQ04）；广州市科技计划项目（No.202002020065）；广东省科技计划项目（科技创新平台类）（No.2019B121201002）；广州市气象学会科学技术研究项目（No.Z202006）

• 云翔
• 广州市气象局，广州 510150

• 申冲
• 广州市气象局，广州 510150;广州市气候与农业气象中心，广州 511430

• 王春林
• 广州市气象局，广州 510150;广州市气候与农业气象中心，广州 511430;南方海洋科学与工程广东省实验室（珠海），珠海 519082

• 陈继奋
• 广州市气象局，广州 510150

• 裴成磊
• 广东省广州生态环境监测中心站，广州 510006

• 问楠臻
• 广州市气象局，广州 510150

• 张金谱
• 广东省广州生态环境监测中心站，广州 510006

• 蔡顺明
• 广州市气象局，广州 510150

• 邱晓暖
• 广东省广州生态环境监测中心站，广州 510006

• 周扬
• 广州市气象局，广州 510150

• 摘要：基于2016—2019年空气质量监测数据、地面气象观测数据和中低层天气形势图，分析了广州市大气污染特征及其典型环流形势特征，揭示了不同环流形势与污染物浓度之间的关系.结果表明：①近年来广州市随着细颗粒物污染持续改善，空气质量优良率基本维持在80%及以上，但光化学污染问题逐渐凸显，O₃已成为广州市大气污染的主要污染物.②广州市大气污染季节变化明显，主要表现为秋、冬季更易出现大气污染，且多为持续性（≥5 d）污染.③经过分型和统计，总结出10种典型500 hPa-850 hPa-地面环流型，分别为台风外围-台风外围-台风外围、副高边缘-反气旋环流-变形高压脊、副高边缘-反气旋环流-冷锋前、副高-偏南气流-均压场、副高-偏东气流-均压场、副高-反气旋环流-均压场、副高边缘-反气旋环流-冷高压脊、西风槽槽后-反气旋环流-变性高压脊、副高-偏南气流-冷锋前、副高边缘-偏南气流-冷锋前.个例分析表明， 这10种典型环流型可以概述最主要的广州大气污染环流形势，对空气质量预报有一定的指导作用.

• Abstract：Based on the air quality monitoring data， ground meteorological observation data and the middle-low level weather charts from 2016 to 2019， The characteristics of air pollution in Guangzhou and its typical circulation situation were analyzed， and the relationship between different circulation situations and pollutant concentrations is revealed in the study. The results showed that： ①In recent years， with the continuous improvement of fine particle pollutants in Guangzhou， the excellent rate of air quality is basically maintained at 80% or above， but the problem of photochemical pollution was gradually highlighted， O₃ has become the main pollutant of air pollution in Guangzhou. ②The air pollution changed obviously with seasons， main feature was that air pollution was more likely occur in autumn and winter， and most of them are continuous process （≥5 days）. ③10 typical circulation patterns of 500 hPa-850 hPa-ground were summarized by classification and statistics， which were typhoon edge-typhoon edge-typhoon edge， subtropical high edge-anticyclone-deformed high ridge， subtropical high edge-anticyclone-before cold front， subtropical high-southern current-equal pressure field， subtropical high-eastern current-equal pressure field， subtropical high-anticyclone-equal pressure field， subtropical high edge-anticyclone-cold high ridge， behind western current-anticyclone-deformed high ridge， subtropical high-southern current-before cold front， subtropical high edge-southern current-before cold front. Case study showed that these 10 typical circulation patterns could describe most of the atmospheric pollution circulations in Guangzhou， which provided some guidance foe air quality prediction.

• Key words：air quality  air pollution  O₃  circulation patterns  Guangzhou

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