摘要
首先利用温静力温度Ｔσ分析了１９９４年７月１２—１３日北京地区台风低压和西来槽共同影响的强降水过程的能量场，其次利用能量锋锋生方程组，并进行能量锋锋生分析。结果表明：此次降水过程对流层低层对应有明显的Ｔσ水平能量锋区，且Ｔσ能量锋区与同时次６小时降水相对应。能量锋生方程组计算出的Ｔσ水平锋生是地转变形项和倾斜项共同作用的结果，而瓦垂直锋生主要是倾斜项的作用。同时，水平锋生对降水具有指示意义。
First,using dingnostic variable Tσ-the energy field effected by typhoon and trough in July,12-13 1994 is analysed. Second,the energy frontogenetical analysis is give.The results indicate that there is an explicit Tσ horizontal energy front in lower troposhpere during this torrential rain with a duration of six hours.The vertical frontogenesis is mostly caused by ageostrophic metamorphonesis term.The horizontal frontogenesis of Tσ,mixing effect of geostrophic and ageostrophic metamorphosis terms,was wa good indicator for future six hours precipitation.
出处
《气象》
CSCD
北大核心
1995年第10期30-32,共3页
Meteorological Monthly
关键词
暴雨
能量锋
动力锋生
锋生
torrential rain energy front dynamical frontogenesis
