摘要
利用NCEP/NCAR格点分析资料,根据非地转湿Q矢量对2005年8月28-29日河南省大暴雨天气过程进行了诊断分析,试图找出非地转湿Q矢量与大暴雨过程的关系,分析结果表明,大暴雨区和非地转湿Q矢量辐合区以及上升运动区有较好的对应关系,暴雨产生在低层负的非地转湿Q矢量散度区域内,非地转湿Q矢量所激发的次级环流有利于暴雨的维持和发展,暴雨落区位于次级环流的上升支一侧。
Using NCEP/NCAR reanalysis data,the wet Q-vector method is applied to diagnose the rainstorm process which occurred in Henan province from August 28th to 29th,2005 in order to find the relationship between the rainstorm process and the ageostrophic wet Q-vector.The results show the rain storm area and ageostrophic wet Q-vector convergence area as well as the ascending motion area has the good corresponding relationships.The rain storm most likely occurs in a Q-vector convergent area and it locates near the ascending branch of a secondary circulation,which is triggered by ageostrophic wet Q-vector and also can benefit the maintenance and development of rainstorm.
出处
《气象与环境科学》
2010年第2期48-52,共5页
Meteorological and Environmental Sciences
关键词
暴雨
非地转湿Q矢量
次级环流
rainstorm
ageostrophic wet Q-vector
secondary circulation
作者简介
乔春贵（1972-），男，河南新野人，高级工程师，学士，从事天气气候分析工作．E-mail：lqiao5254@sohu．com
