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大连机场2013年7月2日出现一次时间较长、较强的雷暴天气过程,对航空和交通运输带来了一定的影响。本研究利用高空、地面常规观测资料和多普勒雷达数据,对2013年7月2日发生在大连机场的雷雨天气过程从天气形势、物理量诊断等方面进行分析,结果表明:高层有冷涡槽东移,同时有强冷空气扩散南下,受此影响低层辐合加强;中低层低涡加强,槽线附近多触发低压扰动,并且槽前西南气流控制,水汽充沛;近地面层本场处于冷锋前,存在风向的辐合,即近地面存在明显的触发机制。
Dalian Airport July 2, 2013 appeared a longer, stronger thunderstorm weather process, aviation and transport have brought some impact. In this study, using the data of high altitude, conventional ground observation and Doppler radar data, the thunderstorm weather occurred in Dalian Airport on July 2, 2013 was analyzed from the aspects of weather conditions and physical quantities. The results showed that: In the meantime, there is strong cold air spreading southward, which is affected by the convergence of the lower layer. The middle and lower layers of low vortex strengthen, multi-triggered low pressure disturbances near the trough line, and the southwest of the trough is controlled by air flow. The near surface layer is in front of the cold front , There is convergence of the wind direction, that there is a clear near-surface trigger mechanism.