2021年1月扬沙天气与3月强沙尘暴天气过程对比分析  

Comparative Analysis of Sand Blowing Weather in January 2021 and Severe Dust Storm Weather in March 2021

作　　者：张静纯 ZHANG Jing-chun(Baotou Meteoro-logical Observatory,Baotou,Inner Mongolia 014030)

机构地区：[1]包头市气象台,内蒙古包头014030

出　　处：《农业灾害研究》2021年第8期57-59,共3页Journal of Agricultural Catastrophology

摘　　要：沙尘天气是包头市春季高影响天气,给人们正常生产生活带来了巨大的影响。本文以1月11—15日的扬沙天气与3月14—15日的强沙尘暴天气过程为例,从实况、环流特征、层结条件、散度条件及地面气象要素等方面详细分析了两次过程的异同。从各个方面的总结来看,扬沙天气过程大气层结较为稳定、冷平流弱、风力较弱、以辐散下沉运动为主,沙尘暴天气过程大气层结不稳定、有深厚的混合层、冷平流强、风力大、高层辐散低层辐合有明显的上升运动。Dust weather is a high impact weather in spring in Baotou City,which has brought a great impact on people's normal production and life.Taking the sand blowing weather from January 11 to 15 and the severe dust storm weather process from March 14 to 15 as examples,the similarities and differences between the two processes are analyzed in detail from the aspects of actual situation,circulation characteristics,stratification conditions,divergence conditions and surface meteorological elements.From the summary of all aspects,the atmospheric stratification in the sand blowing weather process is relatively stable,the cold advection is weak,the wind force is weak,and the divergence sinking movement is the main.The atmospheric stratification in the dust storm weather process is unstable,with deep mixing layer,strong cold advection,strong wind force,high-level divergence and obvious upward movement of low-level convergence.

关 键 词：扬沙 沙尘暴 大气层结 冷锋 

分 类 号：P425.55[天文地球—大气科学及气象学]