高空槽
Tim located in the rear of a high-level trough and obtained negative vorticity advection, with the effect of the feeble cold air from the east, only formed weak cold front in North China, and precipitation on Liaodong Peninsula was less than 10 mm.
Tim位于高空槽后,获得负涡度平流,在东部弱冷空气作用下,引起台风弱变性,并没有形成气旋,在东北地区被西风槽合并后消失,辽东半岛只出现10mm以下的降水。
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