一、引言雷暴是产生在积雨云中的伴有闪电、雷鸣、阵雨、大风,有时还伴有冰雹、龙卷的中小尺度对流天气系统,对航空飞行安全有严重威胁。据统计:近20年来,国内外飞行事故中,有近六分之一是因飞机进入雷暴导致的。大连机场的雷暴常导致飞机返航、备降和延误,如2006年7月31日的雷暴就造成19 I. INTRODUCTION Thunderstorm is a mesoscale convective weather system with lightning, thunderstorms, showers, strong winds, sometimes accompanied by hail and tornadoes, which pose a serious threat to the safety of aviation flights. According to statistics: nearly 20% of the domestic and international flight accidents in the recent 20 years were caused by aircraft entering a thunderstorm. A thunderstorm at Dalian Airport often caused the aircraft to return, prepare for and delay, as the thunderstorm on July 31, 2006 caused 19