珠江三角洲城市群污染综合指数预报的模式方法

THE MODEL PREDCTIVE METHOD OF SYNTHESISED POLLUTANT INDEX ON PEARL RIVER DELTA CITIES

应用全二阶矩表示的商斯烟团模式，重点引入烟团的合并与分解及各种清除过程，并利用广州热带模式（GZTM）所提供的华南地区细网格的三维数字化流场，来计算污染物浓度的长期变化。具体先模拟计算SO2、NOx、TSP的地面浓度日变化，通过求平均得到每种污染物的日均浓度，并和对应的污染物的日均浓度二级标准比较，得到每种污染物的污染指数Pi，最后求和得出污染综合指数P，从而对珠江三角洲地区的污染综合指数作出预报。

The long-term concentration is calculated using the general second-order moments Guassian puff model and the high-resolution wind fields from Guangzhou tropical model (GZTM).The Guassian puff model includes the processes of the puff's splitting-merging and scavenging. The ppollutant synthesised index of Pearl River Delta cities is predicted with the fellowingstepe. The first is to have the SO2,NOx,TSP's ground concentrations simulated and the drilyaveraging concentration of every kind of species gained. The second is for the pollutant index Pi ofevery kind of species to be calculated to compare with the second respective division of pollutionstandards. The last is to compute pollutant synthesised index P computed with adding each Pi.