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A numerical simulation of nonlinear propagation of gravity wave packet in three-dimension compressible atmosphere

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Abstract

By using FICE scheme, a numerical simulation of nonlinear propagation of gravity wave packet in three-dimension compressible atmosphere is presented. The whole nonlinear propagation process of the gravity wave packet is shown; the basic characteristics of nonlinear propagation and the influence of the ambient winds on the propagation are analyzed. The results show that FICE scheme can be extended in three-dimension by which the calculation is steady and kept for a long time; the increase of wave amplitude is faster than the exponential increase according to the linear gravity theory; nonlinear propagation makes the horizontal perturbation velocity increase greatly which can lead to enhancement of the local ambient winds; the propagation path and the propagation velocity of energy are different from the results expected by the linear gravity waves theory, the nonlinearity causes the change in propagation characteristics of gravity wave; the ambient winds alter the propagation path and group velocity of gravity wave.

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Authors and Affiliations

  1. Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, 430071, Wuhan, China

    Shaoping Wu & Yi Fan

  2. Department of Radio Science and Technology, Wuhan University, 430072, Wuhan, China

    Yi Fan

  3. Department of Physics, Huazhong Normal University, 430079, Wuhan, China

    Shaoping Wu

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  1. Shaoping Wu
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  2. Yi Fan
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Correspondence to Shaoping Wu.

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Wu, S., Fan, Y. A numerical simulation of nonlinear propagation of gravity wave packet in three-dimension compressible atmosphere. Sci. China Ser. E-Technol. Sci. 45, 306–313 (2002). https://doi.org/10.1360/02ye9036

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  • DOI: https://doi.org/10.1360/02ye9036

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