摘要
本文对１９９６年７月２５日到２７日甘肃省发生的暴雨过程进行天气系统诊断、中尺度动力扰动以及云图特征分析，指出：７００ｈＰａ中尺度低涡切变、锋面云带与对流云团合并是形成暴雨的重要机制，暴雨发生在云顶亮温梯度最大区的下风方冷云中心附近，中尺度扰动气旋随高度的前倾引发了不稳定能量的释放。
BY diagnosiny weather system and analyzing meso-scale dynawic disfarbance and cloud chart features of july 25 to 27 1996 storm in gansu,it is pointeel that the main mechanics of forming storm is combination of 700hPa meso-scale low eddy shear and front cloud band and convective cloud mass.stirm happeded near downwind cold cloud center of brighyness tsinperature gradient maximum area at cloud top.Leaning forward of meso-disturbance cycle with height caused releasing of unsteady enrgy.
出处
《干旱气象》
1998年第2期10-13,共4页
Journal of Arid Meteorology
关键词
甘肃
大暴雨
分析
Gansu Severe storm analysis
