摘要
利用MICAPS常规气象资料、国家站降水资料以及NCEP再分析资料,对2015年11月5—7日发生在张家口的一次暴雪过程进行综合分析。结果表明:该次暴雪过程是地面倒槽和回流作用共同影响造成的;700 h Pa西南急流和850 h Pa以下回流产生的偏东南气流为此次暴雪天气过程提供了必要的水汽条件;张家口地区动力条件与水汽条件配合较好,有利于暴雪的发生;雨雪转换过程要综合分析温度的垂直特征,特征温度以及冷暖平流的强弱。
Based on MICAPS conventional meteorological data, national station precipitation data as well as the NCEP reanalysis data, a snowstorm process which occurred on November 5-7,2015 in Zhangjiakou was analyzed. The results show that: the snowstorm was a common effect of the ground inverted trough and the reflow; the 700 h Pa southwest rapids and 850 h Pa flows from the southeast provided the necessary moisture conditions for the snowstorm;the dynamic conditions of Zhangjiakou and the vapor conditions were better,which were conducive to the occurrence of the snowstorm; the rain and snow conversion process should comprehensively analyze the vertical characteristics of the temperature, the characteristic temperature and the strength of the cold and warm advection.
出处
《农业灾害研究》
2017年第9期25-27,共3页
Journal of Agricultural Catastrophology
关键词
暴雪
回流
地面倒槽
雨雪转换
Snowstorm
Reflow
Ground inverted trough
Rain and snow conversion