SUBTROPICAL HIGH, LATENT HEATING BY CONVECTION AND ASSOCIATION WITH DISSIPATION AND MAINTENANCE OF SOUTH CHINA SEA TYPHOONSI

Ding Zhiying; Shen Tongli; Ding Yihui

Abstract:

Numerical modeling and experiments are conducted for the South China Sea typhoons Helen (1995) and Willie (1996) with an auto-adaptive mesh model. It is shown that durating the stage of dissipation the typhoons are mainly related with the subtropical high rather than the topography. The high is sensitive to the intensity change of the typhoon so that the former weakens as the latter strengthens and vice versa. Maintaining the typhoon as a main factor, the release of latent heat is in reversed proportion with the subtropical high in terms of the intensity. It is found that the storm tends to be maintained if it moves close to the westerly trough after landfall.

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Ding Zhiying, Shen Tongli, Ding Yihui. SUBTROPICAL HIGH, LATENT HEATING BY CONVECTION AND ASSOCIATION WITH DISSIPATION AND MAINTENANCE OF SOUTH CHINA SEA TYPHOONSI [J]. Journal of Tropical Meteorology, 1999, 5(1): 43-50.

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SUBTROPICAL HIGH, LATENT HEATING BY CONVECTION AND ASSOCIATION WITH DISSIPATION AND MAINTENANCE OF SOUTH CHINA SEA TYPHOONSI

Nanjing Institute of Meteorology Nanjing 210044

National Climate Center. Beijing, Beijing 100081

Received Date: 1997-10-05

Rev Recd Date: 1998-06-22

Abstract: Numerical modeling and experiments are conducted for the South China Sea typhoons Helen (1995) and Willie (1996) with an auto-adaptive mesh model. It is shown that durating the stage of dissipation the typhoons are mainly related with the subtropical high rather than the topography. The high is sensitive to the intensity change of the typhoon so that the former weakens as the latter strengthens and vice versa. Maintaining the typhoon as a main factor, the release of latent heat is in reversed proportion with the subtropical high in terms of the intensity. It is found that the storm tends to be maintained if it moves close to the westerly trough after landfall.

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Reference (6)

[1]	Anthes R A, Hsie E Y, Kuo Y H, 1987. Description of the Penn State/NCAR Mesoscale Model Version 4 (MM4), NCAR Tech. Note, NCAR/TN-282-STR, 66.
[2]	Dietachmayer G S, Droegemeier K K, 1992. Application of continuous dynamic grid adoption techniques to meteorological modeling. Part I: Basic formulation and accuracy. Mon. Wea. Rev., 1992. 120: 1675-1706.
[3]	Dietachmayer G S, Droegemeier K K, 1992. Application of continuous dynamic grid adoption techniques to meteorological modeling. Part Ⅱ: Efficiency. Mon. Wea. Rev., 1992. 120: 1707-1722.
[4]	Li Shenshen, Shou Shouwen, Wang Xin, 1992. Interactions between landing typhoon and heavy rain in the peripheral (in Chinese). Acta aleteor. Sin.50: 35-40.
[5]	Tan banning, Shen Tongli, Ding Yihui et al., Design of auto-adaptive mesh in MM4. J Nanjing Inst. Meteor. (to be published, in Chinese)
[6]	Zhu Qiangen, Lin Jinrui, Shou Shouwen, et al., 1992. Principles and methods of synoptics (in Chinese). Beijing: China Meteorological Press. 715-781.

[1]	Anthes R A, Hsie E Y, Kuo Y H, 1987. Description of the Penn State/NCAR Mesoscale Model Version 4 (MM4), NCAR Tech. Note, NCAR/TN-282-STR, 66.
[2]	Dietachmayer G S, Droegemeier K K, 1992. Application of continuous dynamic grid adoption techniques to meteorological modeling. Part I: Basic formulation and accuracy. Mon. Wea. Rev., 1992. 120: 1675-1706.
[3]	Dietachmayer G S, Droegemeier K K, 1992. Application of continuous dynamic grid adoption techniques to meteorological modeling. Part Ⅱ: Efficiency. Mon. Wea. Rev., 1992. 120: 1707-1722.
[4]	Li Shenshen, Shou Shouwen, Wang Xin, 1992. Interactions between landing typhoon and heavy rain in the peripheral (in Chinese). Acta aleteor. Sin.50: 35-40.
[5]	Tan banning, Shen Tongli, Ding Yihui et al., Design of auto-adaptive mesh in MM4. J Nanjing Inst. Meteor. (to be published, in Chinese)
[6]	Zhu Qiangen, Lin Jinrui, Shou Shouwen, et al., 1992. Principles and methods of synoptics (in Chinese). Beijing: China Meteorological Press. 715-781.

SUBTROPICAL HIGH, LATENT HEATING BY CONVECTION AND ASSOCIATION WITH DISSIPATION AND MAINTENANCE OF SOUTH CHINA SEA TYPHOONSI

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