台风"桃芝"北上加强原因浅析

2001年8号台风“桃芝”,登陆填塞后又重新发展加强,并在北移中给山东半岛带来特大暴雨。本文通过分析认为,低值系统同位相叠加和冷空气侵入是台风重新发展加强的主要成因;而冷槽“逆转”和副热带高压从日本向朝鲜半岛发展,导致我国东部径向环流加强,南风急流加大,则是台风北移的主要原因。

Analysis of the Reasons for the Strenghening of Typhoon "Toraji" as It Moves to the North

Affected by the developing, strenghening and then moving North of the typhoon "Toraji" (No.8, 2001) after its landing and filling up, a heavy rainfall occurred in the Shanddong Peninsula. Analysis shows that the in-phase superposition of the low system and the insursion of the cold air are the main factors contributing to the developing and strenghening of the typhoon "Toraji "; the inversion of the cold trough and the development of subtropical high from Japan to the Korea Peninsula, which made the strenghening of the eastern meriditional circulation of China and the increment of the souther jet, are the main factors contributing to the typhoon's moving to the north.