渭河上游一次致洪暴雨过程诊断分析

Diagnostic Analysis of a Flood Rainstorm Process in the Upper Weihe River

应用天气学原理和方法，对1996年7月26～28日甘肃东部（渭河上游）暴雨过程的天气形势和物理量场的详细分析，结果表明，这次致洪暴雨的发生与低层能量的积累、700hPa低涡切变和低空急流的形成有直接关系。

Using synoptic theory and methods, the weather situation and physical variable fields of the rainstorm process of 26-28 July, 1996 over eastern Gansu （upper Weihe River） are analyzed. The results show that the flood rainstorm is closely related with lower level energy accumulation, a low-vortex shear line and the low-level jet on 700 hPa.