Theory of Cyclone (Ist Report)

[摘要] The author showed in his previous paper, “Study on the Mechanisms of Rainfall, ” that a steep and high boundary of air mass is most esential for rainfall.In the present paper it will be shown by an example of tropical cyclone produced off the south-east of Formosa that a high-wall is most important also for the genesis and development of a tropical cyclone. As a result of the above fact it is shown that the cyclogenesis is decided by a high wall which extends to the upper troposphere and a thick solid-flow interposed on it, therefore it is regarded as a phenomenon of a wake benind an air mass obstacle.Consequently the present theory is the vortex theory and at the same time the barrier theory.But it is essentially different from Exner's barrier theory. His barrier is low, but the author's is so high, that it reaches the upper troposphere. As the cause producing a high wall is at a high level, probably the stratospheres it is not influenced by disturbances due to tta production or development of a cyclone, tnereiore it may be regarded as most important energy source for the development of a tropical cyclone.When a high wall is interfered with by a thick solid flow which is gen_??_ally forced by a pressure wave, or thrust into a uniformly thick flow, a tropical cyclone will be formed behind an air mass obstacle.According to the above theory the three air masses after Rodewald's theory ire not so much the cause as the result.The present example, is that of a typhoon, therefore the author's theory can not be. extended to that of a cyclone without codification. According to the author's opinion, a cyclone appears as the result of combination of the pressure distribution of a high cyclone formed above the earth's surface layer (about 2 Km) with the horisontal density distribution in its layer.Moreover the amalgamation of cyclones. can be explained by this theory.

[学科分类] 大气科学