珠江三角洲地区天气类型与污染潜势及污染浓度的关系

THE RELATIONSHIP BETEEN SYNOPTIC PATTERNS AND POTENTIALPOLLUTION AND THE DENSITY OF SUKFACE AIR POLLUTIONOVER PEARL RIVER DELTA

利用１９８６—１９９３年珠江三角洲地区主要城市的污染浓度资料和天气资料，计算了不同月份各种天气类型下大气污染物浓度超过二级标准的频率，得出珠江三角洲地区天气类型和地面空气污染浓度之间的定性关系。发现大气中的污染物浓度（如ＳＯ２、ＮＯｘ、ＴＳＰ、ＣＯ）不仅与当天的天气类型有着密切联系，而且与前几天的天气类型的持续时间、地面气压场和高空气压场的配置、锋面移动的快慢、热带气旋的影响等天气因素均有关系。

With to the synoptic data and Pollution density observed at some main city spots of Pearl River Delta between 1986-1 993, the frequency of synoptic patterns in which Pollution density exceeds standard II in different months have been calculated. The relationship between synoptic pat terns and density of surface air Pollution over Pearl River Delta is qualitatively determined. It reveals that the density of air Pollution particles (SO2, NOx, TSP, CO etc. ) changing not onlyclosely with the synoptic pattern on observational days, but also with the duration of synoptic patterns I the surface and upper air situation, the motion of front and motion of tropical cyclone ohserved a few days before the observation.