2008年6月3日一次中尺度强对流天气过程分析

Analysis of a Mesoscale Strong Convective Weather Process on June 3,2008

利用Micaps资料及新一代天气雷达探测资料,从环流背景、物理量场和雷达回波演变几方面分析了2008年6月3日下午郑州新郑机场遭遇的一场历年少见的强对流天气过程,结果表明:此次天气过程形成于东北冷涡东移过程中,旺盛的暖湿辐合上升气流提供了对流暴发的动力和水汽条件,中层相对较干的暖层结有利于积聚大量的不稳定能量,低层冷空气的入侵是对流暴发的触发机制。新一代天气雷达探测资料揭示了对流云团的发生、发展、移向和强度变化。

Using the Micaps data and the new generation weather radar sounding material, from several aspects such as circulation background, physical quantity field and radar echo development, a rare strong convective weather in Zhengzhoa Xinzheng Airport on June 3,2008 pm was analyzed. The results indicated that this synoptic process formed in northeast cold vortex moved to eastward, and the exuberant warm wet convergence ascendant current had provided the power and the water vapor condition for the convection erupts, the middle relatively dry-warm stratification was conducive to instability in the accumulation of large energy, and the low-level cold air＇ s invasion was the trigger mechanism which the convection erupted, and the new generation weather radar sounding data revealed the occurrence, development, moving direction and intensity change of convective clouds.