保定春季首场透雨天气过程诊断分析  

The Analysis on Weather Process of the First Soaking Rain in the Spring in Baoding

作　　者：王志超[1] 董疆南 WANG Zhichao;DONG Jiangnan

机构地区：[1]保定市气象局,河北保定071000

出　　处：《山西科技》2020年第3期53-55,共3页Shanxi Science and Technology

摘　　要：利用常规观测资料、NCEP/NCAR 1°×1°再分析资料以及卫星、雷达资料,对2019年4月24日发生在保定地区的首场透雨过程进行诊断分析。结果表明:这是一次高空槽与东北回流冷空气影响下形成的透雨过程;保定西部为积层混合型降雨,东部以层状云降雨为主;高空急流右后侧辐散与低空辐合相叠加加强了辐合上升运动,增加了降雨。Based on conventional observation data and NCEP/NCAR FNL1°×1°reanalysis data,and satellite and radar data,the diagnostic analysis was made about the first soaking rain on April 24 in 2019 in Baoding of Hebei Province.The results show that the weather process was produced in the interaction of the upper trough and northern return-flow cold air.Convective-stratiform mixed cloud precipititation process was in the western part and stratiform cloud precipititation process was in the easrern part of Baoding area.The divergence of high-level jet on the right rear side and the convergence of lower layer strengthened the ascending motion and increased the precipitation.

关 键 词：透雨 回流 高空槽 

分 类 号：P458.121[天文地球—大气科学及气象学]