[目的]研究一次强雷暴过程中的VWP产品特征分析.[方法]在前人分析的基础上,对2008年4月8日湖南一次强雷暴发生前、维持发展中、消失前的不同阶段的VWP产品特征进行详细的分析.[结果]在雷暴出现前,低层“ND”层的破坏预示着水汽含量层的增厚,中层干冷空气的侵入导致了层结的不稳定；雷暴维持期间,低层强的垂直风切变会导致强雷暴发展,边界层冷空气渗透导致雷暴达到最强盛阶段,地面出现冰雹天气；雷暴消失前(17:59后),整个风场转为连续“ND”层的一个趋势表明强对流云已远离雷达所在地,预示着雷暴结束.[结论]该研究为预报员做雷暴预警提供参考依据.%[Objective] The aim was to study the characteristics of VWP product in one strong rainstorm process. [ Method] On the previous study analysis, the VWP product characteristics of early generation of strong rainstoim, during the development and the end of one strong rain storm in Hunan Province on April 8, 2008 were studied. [ Result] Before the occurrence of rainstorm, the destruction of low layer "ND" layer indicated the increase of water vapor content layer. The intrusion of cold and dry air in the middle layer led to unstable layer; during the main taining period of rainstorm, the strong vertical shear in the low layer led to the occurrence of strong rainstorm. The cold air in the boundary lay er penetrated and led the rainstorm to the most prevailing stage. There was hailstorm on the ground. Before die disappearance of rainstorm ( after 17:59) , the entire wind field changed into consecutive "ND" layer and it suggested that the strong convective cloud was far away from the lo cation of radar, and indicated the end of rainstorm. [Conclusion] The study provided reference and basis for the pre-waming of rrainstorm for temporary reporter.
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