摘要
利用MICAPS系统提供的资料,对2003年7月28日发生在晋东南和豫北区域暴雨过程的大尺度环流背景和物理量场进行了分析。得出:本次暴雨过程是在中纬度西风槽与中低空切变线的相互作用下产生的,前期不稳定能量的高度积累为暴雨提供了充沛的水汽和能量,近地面层的微弱扰动触发了不稳定能量的释放,为暴雨的发生提供了动力条件。
The large -scale circumfluence back ground and physical quantity field o f the heavey rain pro-cess,occured in southeastern Jin an d northern Yu on 28July,2003,was analyzed based on the data of MICAPS system.The process was derived from the interaction of westerly trough a midst latitude and shear -line of middle or low altitude.The former in stable energy accumulated highly su pplyed abundant water vapor and energy for the storm and feeble disturbance near ground arosed the release of the instable energy and supplyed the power for rainstorm' s occur.
出处
《山西气象》
2004年第2期5-7,共3页
Shanxi Meteorological Quarterly
关键词
区域暴雨
低空切变线
不稳定能量
territorial rainstorm
shear -lin e of low altitude
instable energy
