北半球冬季冷涌及其反馈过程与东亚气旋爆发性发展的关系
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摘要: 本文分析了东亚地区的实例,指出在冬季冷涌爆发后其反馈过程所产生的净科氏力项正值与海上动量辐合的相重地区,有利于急流加强增强斜压动力作用,在海洋加热场共同作用下可引起气旋爆发性发展。在气象炸弹出现后,又有利于寒潮爆发和再次出现冷涌,有时能引起又一个气象炸弹出现,两者之间可产生连锁反应。由此说明冬半年冷涌爆发与气旋爆发性发展存在着联系,这种联系还可说明气象炸弹出现的时间和地区的集中性。
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