Abstract:Based on surface and 850,500hPa level synoptic maps and primary meteorological factors during summer and autumn from 2007 to 2008 in Beijing, two kinds of synoptic weather patterns were divided, one of which was helpful for accumulating pollutants with higher pollution including four basic types and the other was helpful for dispersing pollutants with lower pollution including two basic types. In 2007, concentrations of NOx, O3(hourly maximum), PM2.5 and PM10 averaged from four sites in Beijng were 38.1×10-9(V/V), 115.2×10-9(V/V), 90.6μg/m3, 212.5μg/m3 under accumulating synoptic pattern, respectively, while 36.3×10-9(V/V), 68.9×10-9(V/V), 39.3μg/m3, 125.4μg/m3 under dispersing synoptic pattern, respectively. The source control measures were carried out to ensure the air quality during 2008 Beijing Olympic Games, and concentrations of NOx、O3(hourly maximum)、PM2.5 and PM10 were 19.3×10-9 (V/V), 87.1×10-9(V/V), 66.3μg/m3, 99.6μg/m3 under accumulating synoptic pattern, respectively, while 19.0×10-9(V/V), 62.5×10-9(V/V), 41.0μg/m3, 65.2μg/m3 under dispersing synoptic pattern, respectively. Although the source control measures were carried out, higher pollutant concentrations were appeared under accumulating synoptic pattern; thus, researching pollutant changes under this synoptic pattern is very important for predicting severe pollutions and establishing effective source control measures.
王莉莉, 王跃思, 王迎红, 孙扬, 吉东生, 任玉芬. 北京夏末秋初不同天气形势对大气污染物浓度的影响[J]. 中国环境科学, 2010, 30(7): 924-930.
WANG Li-Li, WANG Yue-Si, WANG Ying-Hong, SUN Yang, JI Dong-Sheng, REN Yu-Fen. Relationship between different synoptic weather patterns and concentrations of atmospheric pollutants in Beijing during summer and autumn. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(7): 924-930.