0518号台风“达维”后期强度突变成因分析

An analysis of the cause of the intensity change of the "0518" TY Damey in its late phase

利用常规气象观测资料、风云2号C星云图资料、T213分析资料、EC分析资料等对0518号台风"达维"后期强度突发增强的原因进行分析,表明:后期副热带高压突然加强、低层风场uv分量增大、高层散度增大、适度弱冷空气侵入外围、水汽输送充分等是0518号台风"达维"后期强度突然加强的主要原因。

Using convectional meteorological observing data, FENGYUN-2 C satellite cloud image data, T213 analysis data, and EC analysis data, etc, we analyzed the causes of the intensity catastrophe of the ＂0518＂ TY Damey during its Later period, and found that abrupt reinforcing of the subtropical high, augment of the component u, v in lower level, enhancing of the divergence in higher level, the periphery being intruded by modestly weak cold air, and abundant water vapor feeding, etc, are the main causes.