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Article >  Journal of Tropical Meteorology  > 1997 >  3(1): 61-68

ON RELATION OF MESO-α INERTIA WAVE DEVELOPMENT TO RAINSTORM ENHANCEMENT IN TYPHOON POLLY

  • Najiing Institate of Meteorology, Nanjing, 210044

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  • Numerical simulation and diagnosis show that the amplified rainstorm from Typhoon Poily is related to the development/migration of meso-α gravity waves, inhomoseneous stratification distribution andcumulus convection latent heating feedback in the storm; such waves at a large scale are excited bylarge-scale nonlinear advection; substantially amplified ageostrophic wind perturbation resulting fromthe latent heating gives rise to intensified wave amplitude, leading to enhanced rising and thus torrentialrainfall; as the waves migrate towards reduced stability, wave energy is most likely to increase.
  • [1] Anthes R A,Hsie E Y,Kuo Y H,1987. Desct'iption of the Pnne State/NCAR mesoscale model version 4 (MM4),NCAR Tech. Note,NCAR/TN-282-f-ST R,66p.
    [2] Ding Zhiying,Chen Jiukang,1997. Study on discontinuous northerly jump of an inland typhoon in relation to torrential rain. J. Appl. Melear. 8 (1):44-52 (in press,in Chinese with English abstract).
    [3] Li Maicun,1978. Triggering of gravity waves to exceptional torrential rain,Acta Atmospherics Sinica, 2 (3):201-210 (in Chinese with English abstract).
    [4] Zhao Ping,Sun Shuqing,1990. On development of gravity-inertia waves in an inhomogeneously-stratified atmosphere,Acts Meleorolog ica Sinica,48 (4):397-403(in Chinese with English abstract).
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Ding Zhiying, Chen Jiukang. ON RELATION OF MESO-α INERTIA WAVE DEVELOPMENT TO RAINSTORM ENHANCEMENT IN TYPHOON POLLY [J]. Journal of Tropical Meteorology, 1997, 3(1): 61-68.
Ding Zhiying, Chen Jiukang. ON RELATION OF MESO-α INERTIA WAVE DEVELOPMENT TO RAINSTORM ENHANCEMENT IN TYPHOON POLLY [J]. Journal of Tropical Meteorology, 1997, 3(1): 61-68.
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    • Manuscript History

    Manuscript received: 03 May 1995
    Manuscript revised: 06 December 1995
    通讯作者: 陈斌, bchen63@163.com
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    ON RELATION OF MESO-α INERTIA WAVE DEVELOPMENT TO RAINSTORM ENHANCEMENT IN TYPHOON POLLY

    • Najiing Institate of Meteorology, Nanjing, 210044
    • Received Date: 1995-05-03
    • Rev Recd Date: 1995-12-06

    Abstract: Numerical simulation and diagnosis show that the amplified rainstorm from Typhoon Poily is related to the development/migration of meso-α gravity waves, inhomoseneous stratification distribution andcumulus convection latent heating feedback in the storm; such waves at a large scale are excited bylarge-scale nonlinear advection; substantially amplified ageostrophic wind perturbation resulting fromthe latent heating gives rise to intensified wave amplitude, leading to enhanced rising and thus torrentialrainfall; as the waves migrate towards reduced stability, wave energy is most likely to increase.

    Ding Zhiying, Chen Jiukang. ON RELATION OF MESO-α INERTIA WAVE DEVELOPMENT TO RAINSTORM ENHANCEMENT IN TYPHOON POLLY [J]. Journal of Tropical Meteorology, 1997, 3(1): 61-68.
    Citation: Ding Zhiying, Chen Jiukang. ON RELATION OF MESO-α INERTIA WAVE DEVELOPMENT TO RAINSTORM ENHANCEMENT IN TYPHOON POLLY [J]. Journal of Tropical Meteorology, 1997, 3(1): 61-68.
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