降雹前大气层结稳定状态下的环境场特征

The Environmental Field Characteristics before Hails under the Stable Atmospheric Stratification

分析了１９８３年９月４日巴盟地区降雹前大气层结稳定的降雹过程，通过对降雹前后高空槽的变化、能量条件、触发机制以及环境风垂直切变等物理量的分析，揭示了此类降雹的大气环境场特征。同时指出在特定的环流背景下大气层结随时间的变化可能会由稳定状态变为不稳定状态。

A hail process in Bameng area on Sep. 4, 1983 under the stable atmospheric stratificationwas analysed. The analysis of the physical quantity before and after the hail,e. g. altitudetrough,energy condition,initiation mechanisms and environment wind vertical shear,revealsthat the atmosphere characters can be used in forecasting this type of hail. In some specificbackground of circumfluence,the stable atmosphere structure may turn to instable.