摘要
利用NCEP再分析资料、常规资料对2006年7月2日河南中部特大暴雨过程进行诊断分析,结果表明:深厚的湿层和不稳定层结在强降水发生前已形成;在高低空出现的正负涡度柱、散度柱互耦配置和强烈的垂直上升运动,导致不稳定能量快速释放,产生了此次特大暴雨。强降水期湿Q矢量散度负值中心达到最强,与暴雨区对应。
A torrential rain happened in Henan Province during 2 July, 2006 is diagnosed based on NGEP/NCAR reanalysis data and observational data. The results show that deep humid level and unstable stratification forms before the Torrential Rain; positive and negative vorticity columns appearing in high and low level, mutual coupling structure of divergence columns and strenuous vertical ascending motion lead to fast release instable energy and rainfall ultimately. The negative center of Wet Q Vector divergence reaches to the strongest and corresponds with the rainfall area.
出处
《气象与环境科学》
2008年第B09期112-114,共3页
Meteorological and Environmental Sciences
关键词
特大暴雨
耦合结构
湿Q矢量散度
诊断分析
torrential rain
mutual coupling structure
wet Q vector divergence
diagnostic analysis
