Impact of meteorological conditions on a nine-day particulate matter pollution event observed in December 2013,Shanghai,China

作     者：Jianming Xu Fengxia Yan Ying Xie Fengyun Wang Jianbin Wu Qingyan Fu 

作者机构：Shanghai Meteorological Bureau Meteorological Center of Traffic Management Bureau of East China Shanghai Environmental Monitoring Center 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2015年第13卷第3期

页      面：69-79页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 070602[理学-大气物理学与大气环境] 09[农学] 0903[农学-农业资源与环境] 0706[理学-大气科学] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China under Grant No.41375014 the Project of Science and Technology Commission of Shanghai Municipality under Grant Nos.12dz1202702 and 14DZ1202904 and the Project of Scientific and Technological New Star of Shanghai Meteorological Bureau under Grant Nos.QM201204 and MS201212 

主　　题：Particulate matterPM2.5Pollution eventPlanetary boundary layerCold frontUrban air pollution 

摘      要：A severe particulate matter pollution event occurred in Shanghai from 1 to 9 December 2013. The mean hourly mass concentrations of PM2.5 and PM10 were 211.9 and 249.0 μg/m3, respectively. Reanalysis data, in situ, and remote-sensing measurements were used to examine the impacts of meteorological conditions on this event. It was found that the synoptic pattern of weak pressure, the reduced planetary boundary layer height, and the passage of two cold fronts were key factors causing the event. Four stages were identified during this event based on the evolution of its PM2.5 levels and weather conditions. The highest concentration of PM2.5 （602 μg/m3） was observed in stage 3. High PM2.5 concentrations were closely associated with a low local ventilation index, with an average of 505 m2/s, as well as with the influx of pollutants from upstream, transported by the cold fronts.