云南一次持续性暴雨过程的非地转湿Q*

Ageostrophic Wet Q*

摘要:

应用非地转湿Q^*,对2001年5月31日至6月2日发生在云南的持续性暴雨天气过程进行诊断分析。结果表明,非地转湿Q矢量辐合区是暴雨发生的有利区域;非地转湿Q矢量的垂直分布反映了次级环流的方向和强弱,云南的暴雨落区位于次级环流的上升支附近。

关键词:暴雨;非地转湿Q^*;

Abstract:

The ageostrophic wet Q^*method is applied to investigate apersistent rain storm process,which occurred in Yunnan from May 31 to June 2,2001.The results show that rain storm is most likely happen in a Q^* conver gent area and it locates near the ascending branch of a secondary circulation,whose intensity and direction can be indicated by vertical distribution of Q^*.

Key words:rain storm;ageostrophic wet Q^*;