In this paper,the impact of the Taiwan Island topography on the structure change and motion of Typhoon Dot(9017)during its crossing the Taiwan Island is studied with a modified version of a JMA operational regional mo...In this paper,the impact of the Taiwan Island topography on the structure change and motion of Typhoon Dot(9017)during its crossing the Taiwan Island is studied with a modified version of a JMA operational regional model(Japan spectral model,JSM).A series of sensitivity experiments are conducted to detect the forming and developing mechanism of an island-induced cyclone.Results show that lee side low pressure center plays a very important role in the formation of the induced-cyclone while a typhoon is approaching a large island with high mountains.The position and intensity of the induced cyclone is sensitive to the height and location of island mountain,intensity of TC and under- lying surface topography distribution as well.A preliminary formation criterion of the island-induced cyclone is obtained.展开更多
文摘In this paper,the impact of the Taiwan Island topography on the structure change and motion of Typhoon Dot(9017)during its crossing the Taiwan Island is studied with a modified version of a JMA operational regional model(Japan spectral model,JSM).A series of sensitivity experiments are conducted to detect the forming and developing mechanism of an island-induced cyclone.Results show that lee side low pressure center plays a very important role in the formation of the induced-cyclone while a typhoon is approaching a large island with high mountains.The position and intensity of the induced cyclone is sensitive to the height and location of island mountain,intensity of TC and under- lying surface topography distribution as well.A preliminary formation criterion of the island-induced cyclone is obtained.
