摘要
通过对移经京、津、冀地区的33次冷锋前部雨带的雷达观测分析,归纳出三种不同类型的暖区中尺度雨带:平行类、交角类和垂直类。讨论了各类雨带的宏观特征、发生源地、传播方式以及与强对流天气的关系。并用对称不稳定、开尔文-赫姆霍兹型不稳定、切变不稳定等理论对各类雨带发生发展的可能机制作了初步分析探讨。
From the radar observations of 33 cold frontal systems which passed Beijing-Tianjing and Zhangjiakou area from May to August during 1963-1979, it was recognized that among the 33 systems there existed mesoscale rainbands in the warm sectors ahead of 31 cold fronts.According to the orientation, movement, formation and development of these rainbands, they are divided into three types: parallel, angulate, and perpendicular. In this paper the basic characteristics, generating sources and propagation of the three types of rainbands and the severe convective weather associated with the bands are presented. The possible mechanisms responsible for the formation and development of these rainbands are also briefly discussed.
出处
《气象学报》
CSCD
北大核心
1989年第2期199-206,共8页
Acta Meteorologica Sinica
