呼伦贝尔市2016年一次暴雪过程诊断分析

Diagnostic analysis of a Snowstorm Process in Hulunbeier city in 2016

分析2016年3月31日—4月2日呼伦贝尔市一次暴雪过程,其影响系统为深厚的低压系统,呼伦贝尔地区低层存在比湿大于3 g/kg的湿层和低空急流,相对湿度达到95%以上,有明显低层辐合、高层辐散现象,且涡度平流随高度增加。水汽条件、热动力条件和不稳定条件均有利于暴雪产生。

Based on the analysis of a snowstorm process in Hulunbeier city from March 31 to April 2,2016,the impact system is a deep low-pressure system.There are wet layer and low-level jet stream with specific humidity greater than 3 g/kg in the lower layer of Hulunbeir area,and the relative humidity is up to 3 g/kg Above 95%,there are obvious low-level convergence and highlevel divergence,and vorticity advection increases with the height,regardless of water vapor conditions,thermal dynamic conditions and unstable conditions,it is conducive to the occurrence of blizzard.