高空急流入口区次级环流在一次突发性强降水过程中的作用  

Role of Upper Level Jet Stream Inlet Sub-ycirculation in A Sporadic Intensive Precipitation Process

作　　者：覃庆第 

机构地区：[1]广西区海洋气象台,广西北海536000

出　　处：《广西气象》2001年第4期20-22,共3页Journal of Guangxi Meteorology

摘　　要：通过对 1999年秋季一次突发性降水过程高空急流的分析 ,发现急流入口区南侧辐散 ,其低层辐合上升 ,当低层有印缅槽活动的时候 ,对流加强 ,印缅槽发展 ;急流入口区北侧辐合 ,其低层辐散下沉 。The analysis of the upper level jet stream occurred in a sporadic intensive precipitation process in winter of 1999 found that divergence occurred at the south side of jet stream inlet and its lower level convergence rose. When the Indo Burma trough is active in low level, convection strengthens and Indo Burma trough develops; convergence occurs at the north side of jet stream inlet and its low level divergence goes down, and southward non geostrophic occurs.

关 键 词：次级环流 印缅槽 高空急流 副热带高压 强降水过程 

分 类 号：P458.121[天文地球—大气科学及气象学]