A Statistical Study of the Movement of Typhoon

[摘要] Hitherto, many theoretical and statistical studies on the movement of typhoons have been proposed and it has been recognized that the typhoon moves with a steering current. Recently some quantitative prediction methods for the movement of the storm have been devised and the position of typhoon has been determined accurately by the data from the meteorological satellite. In this study, the movement of the storms is investigated statistically over the Far East area from the viewpoint of synoptic meteorology.Some interesting results are obtained as follows: (1) Though the storms move with the steering current on the whole, the decaying storms deflect to the higher pressure side from the basic flow and the developing storms to the lower pressure side. (2) The vertical wind shear of the basic flow changes from the lower to upper troposphere for the developing cases, but there is no change of the vertical wind shear for the decaying cases.

[学科分类] 大气科学