Based on NCEP reanalysis data,radar data,historical precipitation data in Jinhua,historical typhoon data,the features of "Nepartak" and "Meranti" are analyzed,and the reasons for the strong intensity of "Nepartak" are explained especially.The difference of their precipitation intensity between the two typhoons are compared and analyzed from the following aspects,circulation background,moisture,power,middle and small scale system,terrain and the influence of double typhoon.The results show that upper-tropospheric trough whether decline,extended southward,and overlay the influence of double typhoon cause the difference of moisture,which is the primary reason that cause the difference in precipitation intensity.The difference in dynamic configuration of vertical divergence movement is an important reason.Whether there is a small and middle scale convection activity in the period of typhoon is an indispensable factor.The enhanced effects of terrain and the damping effect of Friction are non-ignorable factors.%通过利用NCEP再分析资料、雷达探空资料、金华市降水历史资料、台风历史资料等,分析了台风“尼伯特”和“莫兰蒂”的特点并着重通过统计方法解释2016年首个台风“尼伯特”强度强的原因.此外,从环流背景、水汽条件、动力条件、中小尺度系统作用、地形作用以及双台风作用等方面对比分析两者降水强度差异的原因.结果表明:(1)高空槽是否下滑南伸与台风低压系统结合,并叠加双台风作用导致的水汽条件差异是造成两者降水强度差异的主要原因;(2)散度垂直运动的动力条件配置上的差异是造成该结果的重要原因;(3)台风影响时期是否存在中小尺度对流活动是造成该差异不可或缺的因素;(4)地形的增幅作用和摩擦削弱作用也是不可忽略的因子.
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