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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。
This paper analyzes the case of East Asia and points out that the positive Net value of Coriolis force produced during the feedback process during the winter cold spell is related to the marine momentum convergence and is conducive to the enhancement of the baroclinic dynamic by the jet stream. Under the combined action of heating field, it can cause the explosive development of cyclone. After the meteorological bombs appear, they are also conducive to the outbreak of cold wave and the reoccurrence of cold spell, sometimes causing another meteorological bomb to appear, which can produce a chain reaction between the two. This shows that there is a link between the onset of cold spells and the explosive development of cyclones in the winter half year, which can also explain the time and regional concentration of meteorological bombs.