2014年7月31日至8月1日呼和浩特市一次飑线天气过程分析

Analysis on a Strong Squall Line Weather Process on July 31, 2014 in Hohhot

利用常规气象资料和新一代多普勒天气雷达观测资料分析2014年7月31日傍晚发生在呼和浩特市的一次飑线天气过程。分析表明,本次飑线过境是由低层暖湿舌和地面辐合线引起的。探空资料分析表明,结合T-log P图、垂直位温图及层结资料配合多种物理量参数可以提前发现强对流发生的信息。多普勒雷达资料分析表明,雷达资料对强对流的早期预警有不可替代的作用,合理利用雷达观测产品和再分析产品有利于判断强对流的发展和移动方向。

An analysis of a squall line process which happened on July 31, 2014 in Hohhot was made by using the conventional meteorological data and new generation weather Doppler radar observation data together. The result shows that the low layer warm tongue and the surface convergence line is the main reason to cause the squall line. Analysis of sounding data shows that, combined with T-log P data, the map of vertical potential temperature and stratification data with a variety of physical parameters, the occurring information of severe convection weather can be found in advance. Analysis of Doppler radar data shows that the radar data has irre-placeable function in early warning of strong convection weathers, rational use of radar observations and reanalysis products is benefi-cial to judge the development and direction of strong convection.