静止锋冷区高架雷暴产生冰雹的成因及环境要素

Based on routine upper-air and surface observations and NCEP reanalysis data, the elevated-thunderstorms, which produce hail in the cold sector of stationary front from January to April in Guizhou, are investigated, including their spatiotemporal distritution, their environmental background and circulation features, the vertical structures of the environmental temperature, humidity , and wind. The formation and trigger mechanism of the hail producing elevated thunderstorms in the cold sector of stationary front are also studied. The favorable three-dimensional structure of weather system leading to the elevated hailstorms is to be identified.

利用常规高空和地面气象观测资料、冰雹观测记录、以及NCEP再分析资料，研究贵州1～4月静止锋后冷区高架雷暴产生冰雹的时空分布特征，天气背景和流型特征，温湿风廓线垂直结构特征，并对静止锋冷区高架雷暴产生冰雹的机理和触发机制进行研究，揭示有利于静止锋冷区高架雷暴产生冰雹的有利环流形势及影响系统的三维配置，认识静止锋冷区高架对流发生发展的成因及其触发条件，提高对静止锋冷区由高架雷暴产生的冰雹天气的预报水平，深化对其形成机理和触发机制的认识。