| NUMERICAL STUDY ON NONLINEAR INTERACTION BETWEEN TROPICAL CYCLONE AND SEA |
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| 作者姓名： | 秦曾灏 朱建荣 |
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| 作者单位： | Shanghai Typhoon Instilute Shanghai 200030，East China Normal University，Shanghai 200062 |
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| 基金项目： | The project is supported by the National Key Program of Science and Technology of China during 1991—1995 under Grant No. 85-906-07. |
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| 摘 要： | Given time-independent monthly mean sea temperature,numerical simulation was done of the path of the tropicalcyclone Forrest and its related physical quantity field in terms of the improved version of the σ-coordinate 10-levelprimitive equation model for tropical cyclones developed by the Guangzhou Institute of Marine Meteorology.Resultssuggest the similarity between the simulated and observed physical quantity fields except that the simulated path was tothe right of the observed,with the deviation increasing with time.Sea and tropical cyclone,in effect,interact mutually.In an attempt to compare the results from coupling anduncoupling experiments,an oceanic mixed layer model was formulated based on experiments with sea response to cy-clone and integrated in synchronous coupling with the aforementioned version of tropical cyclones,the computationaldomain covering the western North Pacific with the coastal configuration involved.The coupling experiment shows thatthe negative feedback of the interaction between sea and mature cyclone leads to weaker sea response as compared to theuncoupling case.Except for the location of the divergence core of oceanic current,the mixed layer depth andinhomogeneous distribution of sea surface temperature (SST) caused by the cyclone-core position and intensity,the val-ues of the maximum oceanic current,departure of the mixed layer depth and SST drop were smaller in the coupling thanin the uncoupling case,and so was the maximum wind near the cyclone core.The path from the coupling run is to theleft of the course in the uncoupling experiment but closer to the observed one though remaining somewhat leftward.Even on a scale of less than 3 days,the effects of sea and sea-cyclone interaction on the cyclone were by no means negli-gible.
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NUMERICAL STUDY ON NONLINEAR INTERACTION BETWEEN TROPICAL CYCLONE AND SEA |
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| Qin Zenghao Shanghai Typhoon Institute,Shanghai Zhu Jianrong East China Normal University,Shanghai.NUMERICAL STUDY ON NONLINEAR INTERACTION BETWEEN TROPICAL CYCLONE AND SEA[J].Acta Meteorologica Sinica,1995(1). |
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| Authors: | Qin Zenghao Shanghai Typhoon Institute Shanghai Zhu Jianrong East China Normal University Shanghai |
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| Institution: | Qin Zenghao Shanghai Typhoon Institute,Shanghai 200030 Zhu Jianrong East China Normal University,Shanghai 200062 |
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| Abstract: | |
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| Keywords: | sea tropical cyclone interaction model equation numerical integration |
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