中文摘要：

利用MODIS卫星资料、空气质量监测资料、地面气象资料及后向轨迹方法,分析研究了2011年10月28-29日辽宁中部城市群一次灰霾天气过程.结果表明：此次辽宁中部城市群灰霾过程主要受京津冀外来灰霾污染的影响;在高压后部弱西南气流天气形势控制下,近地面的西南气流通过辽西走廊和海上通道,将京津冀地区灰霾污染物传输至辽宁中部地区,从而造成辽宁中部城市群灰霾污染过程;MODIS卫星图和后向轨迹图显示的灰霾范围、传输路径及PM10浓度跃变点自南向北推移的时间变化也支持这一结论.虽然＂联防联控＂是治理区域灰霾污染的重要手段,但也要看到区域灰霾污染的跨区域影响问题.

英文摘要：

Based on the MODIS data,air quality monitoring data,ground meteorological data and backward trajectory method,one haze episode in the central city group of Liaoning on October 28—29,2011 was studied.The result showed that this haze episode was mainly influenced by the external pollution from the Beijing-Tianjin-Hebei region.Under the control of the weak southwest airflow from the rear of the high,pollutants of the Beijing-Tianjin-Hebei region was transported to the central Liaoning through the Bohai Bay and the Liaoxi Corridor by southwesterly air flow near surface.The coverage and the transmission path of haze area indicated by the MOIDS image and the temporal change of the northward movement of the PM10 concentration transition point provided additional supports to the above conclusions.Therefore,although the air pollution regional co-control is an important means to prevent regional haze pollution,the trans-regional impacts of haze episode cannot be ignored.