Abstract

We propose a simple theoretical model for the boundary layer (BL) of moving tropical cyclones (TCs). The model estimates the horizontal and vertical wind velocity fields from a few TC characteristics: the maximum tangential wind speed V max , the radius of maximum winds R max , and Holland’s B parameter away from the surface boundary where gradient balance is approximately valid, in addition to the storm translation velocity V t , the surface drag coefficient C D , and the vertical diffusion coefficient of the horizontal momentum K.

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