【摘要】 971 1号台风受大型环流调整的影响于 1 997年 8月 1 9日 1 4时突然转向北上 ;2 0日0 8～ 1 4时该台风北偏东跳跃式移动 ,是因低空急流使台风倒槽区气旋性环流加强产生新中心所致 ;青岛地区产生大暴雨则是充沛的水汽、强烈的辐合上升运动与冷空气共同作用的结果。更多还原

【Abstract】 Due to the change of circulation pattern, the track of typhoon 9711 turned up northward abruptly at 14:00 on Aug. 19, 1997. From 08:00 to 14:00 on Aug.20 the typhoon jumped northeast,because the low level jet enhanced the cyclonic circulation in the region of the trough of typhoon,and a new cyclonic center appeared. Storm rainfall in Qindao is the result of cooperation of plenty of water vapor, strong convergence and updraft, and cold air.更多还原