The major systems come from the shear line of low-layer, the low trough of upper air and the ground stationaryfront.
主要影响系统来自低层切变线、高空低槽和地面静止锋；
2
Results indicate that there is a cold advection in the surface layer and a warm advection at the higher level near the stationaryfront.
结果表明：静止锋附近的近地面层为冷平流，再往上为暖平流。
3
The results are presented of a comprehensive observational analysis of physical and chemical characteristics of precipitation within the warm sector of a quasi-stationaryfront in South China.