论文部分内容阅读
大兴安岭林区的雷击火平均每年有5～10次,有的年份多,有的年份少,其危害是十分严重的。由于大兴安岭的雷击火有80%～90%是发生在“干雷暴”天气系统之中,所以,我们对大兴安岭雷击火发生的主要天气系统“干雷暴”系统,进行比较完整的观测试验研究。雷击火是一种人们不能控制的火源,掌握这种火源的发生规律是困难的。我们用雷达回波分析来研究雷击火的发生规律,因为雷击火的引燃因子主要是闪电,而闪电是发生在雷暴云之中,气象雷达回波能反映出雷
Lightning fires in the Greater Xing’an Mountains have an average of 5-10 fires per year. Some of them are old and some others are young. The damage is very serious. Since 80% -90% of the lightning fire in Daxing’anling occurred in the “dry thunderstorm” weather system, we conducted a comparatively complete observational study on the system of “dry thunderstorm”, a major weather system for lightning strike in the Greater Hinggan Mountains. Lightning fire is a kind of fire source that people can not control. It is difficult to grasp the law of occurrence of such fire source. We use radar echo analysis to study the law of lightning fire because the ignition factor of lightning fire is mainly lightning, and lightning occurs in the thunderstorm cloud. The weather radar echo can reflect the lightning