摘要
本文利用欧洲、T639数值预报产品资料及常规探测资料，分析了低空急流在2009年8月21日阳泉地区暴雨中的作用，结果表明：此次暴雨发生在500hPa副麻稳定的环流背景下，持续强劲的低空急流不仅为暴雨区输送丁源源不断的水汽和不稳定能城，而且维持强的低层辐合上升；高层冷空气入侵的作用也很重要。
By using ecmwf and T639 numerical forecast products data and conventional observation data, the effect of the low level jet for the rainstorm of Yangquan in 21st 2009 was analyzed. The results showed that the rainstorm had presented against the stable circulation background of ：subtropical high at 500hPa. The persistent and strong jet flow had not only transported continued water vapor and instability energy but also maintained strong convergence upward at low level. The invaded of cold air at high level was also important.
出处
《山西气象》
2013年第3期9-13,共5页
Shanxi Meteorological Quarterly
关键词
低空急流
副高
暴雨
the lower level jet stream
subtropical high
rainstorm
作者简介
马星芬（1971年-），女，山西平定人。1994年毕业于南京信息工程大学。
