DYNAMICAL STUDY OF DIABATIC HEATING INFLUENCE ON RADIAL INHOMOGENEOUS STRUCTURE OF TROPICAL CYCLONE*

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    * This work is supported by the National Natural Science Foundation of China (40175019,49975014).

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  • Based on the tropical cyclone (TC) asymmetric disturbance as the superposition of the symmetric environmental circulation,the analytical solution of travelling wave is given by using the barotropical nondivergent model with diabatic heating forcing and non-friction in a plane polar coordinate.Then,the TC radial inhomogeneous structure is analyzed on radial/tangential velocity and geopotential height.It is found that the different kinds of structures are influenced by the Coriolis parameter (f),TC intensity (Ω),disturbance circular frequency (ω),and TC angular wavenumber (m).And,the diabatic heating (Q1) has significant impacts on the radial/tangential velocity distribution shaped like the inner-tight and outer-relaxed.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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DYNAMICAL STUDY OF DIABATIC HEATING INFLUENCE ON RADIAL INHOMOGENEOUS STRUCTURE OF TROPICAL CYCLONE*

  • 1. Shanghai Typhoon Institute,Shanghai 200030;
    Chinese Academy of Meteorological Sciences,Beijing 100081
Funds: * This work is supported by the National Natural Science Foundation of China (40175019,49975014).

Abstract: Based on the tropical cyclone (TC) asymmetric disturbance as the superposition of the symmetric environmental circulation,the analytical solution of travelling wave is given by using the barotropical nondivergent model with diabatic heating forcing and non-friction in a plane polar coordinate.Then,the TC radial inhomogeneous structure is analyzed on radial/tangential velocity and geopotential height.It is found that the different kinds of structures are influenced by the Coriolis parameter (f),TC intensity (Ω),disturbance circular frequency (ω),and TC angular wavenumber (m).And,the diabatic heating (Q1) has significant impacts on the radial/tangential velocity distribution shaped like the inner-tight and outer-relaxed.

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