摘要
本文分析了北京地区泥石流暴雨的时空分布特征,并指出,泥石流暴雨主要是盛夏经向环流背景下的华北暴雨过程;局地大气有明显潜在不稳定,降水强度达60mm/h以上;泥石流暴雨落区是位于地面中尺度能量锋区、能量锋锋生和强水汽辐合的重叠区域.
In this paper, temporal- spatial distribution of the rainstorm- producting mud- rock flow is analysed.It is pointed out that mud-rock flow rainstorm happens mainly in the situation of longitudinal circulation in North China. In the mud-rock flow area, local atmosphere is evidently latent instable, and the rainfall intensity is greater than mm/hour. The rainstorm area is located in the overlapping area of the mesoscale moist statical energe front zone, frontgenesis and strong moisture covergence on the surface.
出处
《大气科学》
CSCD
北大核心
1992年第4期476-481,共6页
Chinese Journal of Atmospheric Sciences
关键词
泥石流
暴雨
诊断
北京
Mud-rock flow
Rainstorm
Diagnostic analysis
Beijing.
