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利用NCEP格点再分析资料、MICAPS资料、卫星云图资料、雷达资料以及自动站资料对2016年5月6日发生在绵阳机场的强初雷过程进行了分析研究。结果表明:(1)500 hPa高空槽、700 hPa及850 hPa切变线和西南低涡产生的中尺度对流系统是雷雨产生的直接原因。(2)此次过程发生在对流不稳定、高能和高湿的大气环境中。动力、热力、水汽和能量等方面分析表明绵阳机场已具备雷雨发生的有利条件。(3)强回波有相向移动的趋势并且合并后加强。(4)通过中尺度对流云团的发生、发展及演变,同时配合雷达反射率和速度场的演变对雷雨的预报有指示意义。
The use of NCEP grid reanalysis data, MICAPS data, satellite imagery, radar data and automatic station data was used to analyze the strong pre-mine process at Mianyang Airport on May 6, The results show that: (1) The 500 hPa trough, the shear wave of 700 hPa, 850 hPa and the mesoscale convective system produced by the southwest vortex are the direct causes of thunderstorm. (2) The process takes place in an unstable atmosphere with high energy and humidity. Power, heat, water vapor and energy analysis shows that Mianyang Airport has the favorable conditions for the occurrence of thunderstorms. (3) There is a tendency for the strong echoes to move toward each other and strengthen them after the merger. (4) Through the occurrence, development and evolution of mesoscale convective cloud clusters, the evolution of the radar reflectivity and velocity fields is indicative of the thunderstorm forecast.