【摘要】 利用MICAPS、NCEP的grib 1x1°、MM5V37模式运行输出等资料,通过天气形势和物理量诊断分析的方法,对造成"05.6"华南致洪暴雨各尺度天气系统进行综合分析。结果表明:该次暴雨过程是在副热带高压、南亚高压、高空槽等大尺度天气系统有利配置的环流形势下,低涡、切变线、静止锋、西南暖低压等天气尺度及中小尺度系统得到发展,各尺度天气系统相互作用下产生的。暴雨落区位于高空槽前、南亚高压脊线反气旋曲率最大处、中低层低涡切变的东南侧和地面静止锋附近。高低空急流相互耦合在这次暴雨的发生过程中起到了关键的作用,高低空急流轴之间的区域是高空辐散区与低空辐合区相配合区域,是强暴雨落区。更多还原

【Abstract】 By using the 1x1° MICAPS、NCEP data and the MM5V37 model data,based on the analysis of the weather situation and the physical diagnosis methods,The various-scale weather systems which caused the rainstorm in south china in June 2005 were analyzed.The results showed that,by the favorable configuration of the large-scale weather systems such as Subtropical high,South Asia high and high-altitude trough,the weather scale and mesoscale systems such as vortex,the shear line,stationary front and southwest warm low pressure were developed.The interaction of various-scale weather systems caused the rainstorm.The rainstorm appeared in the front of the trough,largest curvature of the South Asia high ridge,south east of the shear line and nearby the stationary front.The mutual coupling between high and low altitude jet stream played an important role during the rainstorm process.The strong rainstorm was occurred in the regional between high and low altitude jet stream axis,in which high-altitude divergence and low-level convergence were mutual supported.更多还原