利用T639L19 1°×1°分析场、 FY-2红外云图及红外辐射亮温TBB、 多普勒雷达和气柱水汽总量等资料，对2011年7月2-3日发生在山西境内的区域性暴雨进行了多尺度特征分析。结果表明：（1）副热带高压北上，西南暖湿气流加强，东北冷涡后部冷空气南下，山西北中部锋生是这次区域性暴雨发生的大尺度环流特征。（2）山西中部暴雨由2个β中尺度对流云团生成，且在边界层2条中尺度切变线附近触发对流发展，形成2个暴雨中心；山西南部暴雨则由8个中尺度对流云团生成、 发展合并，在边界层α中尺度人字形切变线附近触发对流发展，α中尺度人字形切变线云系上4个γ中尺度气旋是导致局地大暴雨和特大暴雨形成的直接原因；≤-53℃的黑体亮温区超前多普勒雷达人字形切变线云系反射率因子≥35 dBz的区域。（3）降水中前期，对流云团合并，导致地闪频次峰值和降水量峰值出现，且地闪频次峰值出现时间较降水量峰值出现时间提前12~18 min。（4）中部暴雨发生在气柱水汽总量水平梯度大值区与边界层切变线相重叠的区域，南部暴雨则发生在气柱水汽总量水平梯度大值区的南部0.5~1.0个经/纬距的高湿区与边界层人字形切变线相重叠的区域；气柱水汽总量水平梯度大值区形成时间和边界层切变线形成时间均比暴雨发生提起12 h以上。

With data of T639L19 1°×1° analysis field, FY-2 infrared cloud and infrared radiation brightness temperature(TBB), doppler radar, air vapor content, and so on, the multi-scale feature of the regional rainstorm occurred in Shanxi territory from 2 to 3 July 2011 was analysed. The results show that: (1) The subtropical high moves up northward, the southwest warm-wet air flow enhances, the cold air behind the northeast cold vortex moves down southward, the frontogenesis in the mid-north part of Shanxi are large-scale circulation features of the regional rainstorm. (2) The rainstorm in the middle of Shanxi was created by two β mesoscale convective cloud cluster, and triggered the convection developing nearby the two mesoscale shear line on the boundary layer, and formed two rainstorm centers; While, the rainstorm in the south of Shanxi was created by eight mesoscale convective cloud clusters, developed and combined, and triggered the convection developing nearby the α mesoscale herringbone shear line on the boundary layer. The four γ mesoscale cyclone on the α mesoscale herringbone shear cloud system were the direct reason of the occurrence of the local heavy rainstorm and super rainstorm; The black body brightness temperature area ≤-53℃ advanced the area where the doppler radar herringbone shear cloud system reflectivity gene ≥35 dBz. (3) During the early-middle period of precipitation, the convective cloud cluster combined led to the appearance of cloud-to-ground lightning frequency peak value and precipitation peak value. And the cloud-to-ground lightning frequency peak value appeared 12~18 minutes earlier than the precipitation peak value. (4) The rainstorm of middle part occurred in the area of air vapor content spatial distribution map, where the horizontal grads big value area overlapped with the boundary layer shear line. While, the rainstorm of south part occurred in the area of air vapor content spatial distribution map, where the high humidity area was at a distance of 0.5~1.0 latitude and longitude from south of the horizontal grads big value area, overlapped with the boundary layer herringbone shear; Both the forming time of the air vapor content spatial distribution map horizontal grads big value area and the forming time of the boundary layer shear line were 12 h earlier than the arising of rainstorm.