The Effect of Potential Vorticity Tower in the Development of Typhoon Nari(2001)

摘要

1.Introduction The structure and intensity change of eyewall and spiral rainbands are intriguing physical phenomena whose significant role in the tropical cyclone (TC) dynamics has gained wide attention.However,its spread and evolution mechanism remains a bottleneckfor the improvement of tropical cyclone forecasting accuracy.There are two main factors affecting structure and intensity change of eyewall and spiral rainbands in TC:external forces and internal perturbations.