不同尺度大气系统对污染边界层的影响及其水平流场输送

大气边界层不仅受地面的影响，也受不同尺度大气系统的直接影响。根据在北京市沿南北方向分布的3台激光雷达阵和地面同步的粒子观测数据，选择一次重污染过程进行情景分析，研究不同尺度大气系统对该过程粒子边界层的影响，分析边界层内粒子浓度输送的动态变化。提出北京地区重污染形势的形成原因。对区域性大气污染边界层研究，将有助于对区域及城市污染形成机制的进一步认识。

Influence of Weather System of Different Scales on Pollution Boundary Layer and the Transport in Horizontal Current Field

Atmospheric boundary layer is influenced not only by the ground surface but also directly by the weather system of different scales.Based on both the data from the three sites of the laser radars which all were situated along the south-north direction of Beijing city,and that from the ground surface particle monitors, a severe pollution progress was selected for scenario analysis,to study the influence of weather system of different scales on the particle boundary layer and analyze the dynamic (kinetic) change of the transport of the particle concentration in the boundary layer.The formation causes of severe pollution in Beijing area were given.The boundary layer research of the territorial atmospheric pollution would help to further understand the mechanism of the formation of the terrritorial and urban environment pollution.