呼伦贝尔两次暴雪天气过程对比分析

Comparative Analysis of Two Snowstorms in Hulunbuir

利用地面、高空观测资料及物理量诊断资料,本文对2016年呼伦贝尔市发生的两次暴雪天气进行诊断分析。结果表明,两次降雪过程均受高空冷涡稳定控制,又受地面气旋顶部倒槽影响,低层水汽输送和辐合明显,两次过程均存在高、低空急流耦合作用,这都利用大雪、暴雪的产生。

Using the ground,high-altitude observation data and physical quantity diagnostic data,this paper diag?nosed and analyzed two snowstorms in the Hulunbeier area in 2016.The results show that the two snowfall processes are controlled by the high-altitude cold vortex,and by the top of the ground cyclone,the low-level water vapor trans?port and convergence are obvious.There are high and low-level jet coupling effects in both processes,which all take advantage of heavy snow and heavy snow.