本文利用天气后报网站的2014年空气质量指数资料、香港科技大学网站的气象要素资料以及利用HYSPLIT－WEB模式，对广州、肇庆、珠海3个典型城市两次重污染天气过程和一次清洁过程进行对比分析，探讨了空气污染与气象要素的关系，结果表明：空气污染与气象条件有着密切的关系：1月的重污染天气过程主要由大陆冷高压变性出海引起，7月的污染过程主要受台风外围下沉气流影响；与清洁过程的气象条件相比，污染过程风速小，且存在逆温，不利于污染物的输送和扩散。后向轨迹的分析进一步证明了珠三角城市间空气污染的相互影响，下风向的珠海受污染情况相比广州、肇庆有一定的延迟。%Based on the air quality index( AQI) data from the tianqihoubao website and the meteorological parameters data from the HKUST website as well as HYSPLIT-WEB model utilization, the typical Air pollution processes and cleaning process in 2014 were compared to describe the relationship of air pollution and meteorological factors. The results showed that there was a strong synchronization in typical air pollution process in the three cities, a little delay in Zhuhai however. Moreover, the dominant pollutant changed as Air Quality Index ( AQI) . Air pollution was closely connected with weather process: the typical pollution processes were caused by Continental anticyclone which changed and removed to ocean in January and by the peripheral subsidence airflow of typhoon systems in July. Compared with the cleaning process, the speed of surface layer in haze process was smaller and there occurred Inversion, which were against the transportation and dispersion of pollutants. The interaction effect of air pollution of cities in PRD was further confirmed by HYSPLIT model, which also showed there was a delay in Zhuhai due to the location in downwind direction.
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