中文摘要：

三 supercell 在 2004 年 6 月 24 日下暴雨(0624 ) ， 2003 年 6 月 28 日(0628 ) ，和 2002 年 9 月 27 日(0927 ) 在山东导致了不同损坏省。暴风雨 0927 在尺寸和紧张是劣等的到暴风雨 0628 和 0624。三暴风雨的结构和发展与天气图表在联合基于 WSR-98D 雷达数据详细被分析。结果证明那 mesoscale 表面集中触发了不稳定的精力的版本，它导致了严重传送对流。在发展阶段期间，分别地袭击 0927， 0628，和 0624 显示的多房间繁殖，单个房间的进化，和多房间合并。暴风雨轨道是类似的：他们都是正确动人的 supercell 暴风雨，即，在 30 的一个角度动人 ????????? 偗 ?????????????????? ? 偗 ????? “

英文摘要：

Three supercell storms on 24 June 2004（0624）,28 June 2003（0628）,and 27 September 2002（0927） induced different damages in Shandong Province.Storm 0927 was inferior in size and intensity to storms 0628 and 0624.The structure and evolvement of the three storms were analyzed in detail based on the WSR98D radar data in combination with weather charts.The results show that mesoscale surface convergence triggered release of instable energy,which resulted in severe convection.During the development stage,storms 0927,0628,and 0624 displayed multi-cell propagation,single-cell evolution,and multi-cell mergence,respectively.The storm tracks were similar：they were all right-moving supercell storms,i.e.,moving at an angle of 30°-70° to the right of the mean wind and at a speed of about 45%-70% of the mean wind speed.In the mature stage,the maximum reflectivity appeared at the low level in storm 0927,mid level in storm 0628,and mid-upper level in storm 0624.These storms possessed almost all typical features of supercell storms：weak echo region（WER）,bounded weak echo region（BWER）,and mesocyclone.An organized mesocyclone formed at the middle height of an updraft,deepened gradually downward and upward,and became a typical mid-level mesocyclone with strong updrafts.The vertical structures of airflows in the three storms were similar,i.e.,significant convergence at low level,nearly pure rotation at mid level,and divergent rotation at upper level.However,signatures of mid-level horizontal airflows in the three storms were different：at mid level,there was a single vortex in storm 0628,but a double-vortex flow pattern was seen in storms 0927 and 0624.The horizontal structure of the double-vortex flow was hard to be blown away by the environmental airflow,and thus the storms could persist for a longer period of time than the single vortex storm.