摘要
本文首先用实测资料分析了“北冕”台风造成福建大暴雨过程的环流特征和物理条件，指出低空偏南风急流的北抬和加强为福建闽东南沿海的暴雨提供了有利的热力、水汽、动力条件。然后用MM5模式模拟了减弱低空急流后降水及物理量的变化，结果表明低空急流对福建闽东南暴雨强度有很大的影响。
Based on the real data, the circulation features and the physical condition of Fujian heavy rain caused by typhoon Kammuri are analyzed.The results reveal that northward low-level south-west jet would cause favorable thermodynamic, moisture and dynamic condition for the heavy rainfall in the south-east Fujian.Then, by means of MM5 model, the changes of precipitation and elements were studied after low-level jet was weakened.The results demonstrate that the low-level jet has important effects on the heavy rainfall in the south-east Fujian.
关键词
大暴雨
低空急流
数值模拟
heavy rainfall low-level jet numerical simulation
