| Ocean temperature responses to Typhoon Mstsa in the East China Sea |
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| 作者姓名： | WANG Guansuo QIAO Fangli |
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| 作者单位： | [1]First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China [2]Key Laboratory of Marine Sciences and Numerical Modeling （MASNUM） of State Oceanic Administration, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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| 摘 要： | The MASNUM wave-tide-circulation coupled model, with 21 layers in the vertical and （1/8） °horizontal resolution, was employed to investigate the oceanic responses to Typhoon Mstsa which traversed the East China Sea （ECS） during the period of 4 - 6 August, 2005. Numerical experiment results are analyzed and compared with observation. The responses of the sea surface temperature （SST）, in a focused area of （27° -29°N, 121° - 124°E）, include heating and cooling stages. The heating is mainly due to warm Kuroshio water transportation and downwelling due to the water accumulation. In the cooling stage, the amplitude of the simulated cold wake （ -3℃ ）, located on the right side of this typhoon track, is compared quite well with that of the satellite observed SST data. The wave-induced mixing（Bv） plays a key role for the SST cooling. Bv still plays a leading role, which accounts for 36%, for the ocean temperature drop in the upper ocean of 0 - 40 m, while the upwelling is responsible for 84% of the cooling for the lower layer of 40 - 70 m. The mixed layer depth （MLD） increased quickly from 28 to 50 m in the typhoon period. However, the simulated MLD without the wave-induced vertical mixing, evolution from 13 to 32 m, was seriously underestimated. The surface wave is too important to be ignored for the ocean responses to a typhoon.
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| 关 键 词： | 中国 东海 温度响应 台风 |
| 收稿时间： | 2007/8/15 0:00:00 |
| 修稿时间： | 2008/2/28 0:00:00 |
Ocean temperature responses to Typhoon Mstsa in the East China Sea |
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| WANG Guansuo,QIAO Fangli.Ocean temperature responses to Typhoon Mstsa in the East China Sea[J].Acta Oceanologica Sinica,2008,27(4):26-38. |
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| Authors: | WANG Guansuo and QIAO Fangli |
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| Institution: | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Marine Sciences and Numerical Modeling(MASNUM) of State Oceanic Administration, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | The MASNUM wave-tide-circulation coupled model,with 21 layers in the vertical and(1/8)°horizontal resolution,was employed to investigate the oceanic responses to Typhoon Mstsa which traversed the East China Sea (ECS) during the period of 4～6 Au-gust,2005.Numerical experiment results are analyzed and compared with observation.The responses of the sea surface tempera-ture(SST),in a focused area of(27°～29°N,121°124°E),include heating and cooling stages.The heating is mainly due to warm Kuroshio water transportation and downwelling due to the water accumulation.In the cooling stage,the amplitude of the sim-ulated cold wake(～3℃),located on the right side of this typhoon track,is compared quite well with that of the satellite ob-served SST data.The wave-induced mixing(Bv)plays a key role for the SST cooling.Bv still plays a leading role,which ac-counts for 36%,for the ocean temperature drop in the upper ocean of O～40 m,while the upwelling is responsible for 84%of the cooling for the lower layer of 40～70 m.The mixed layer depth(MLD)increased quickly from 28 to 50 m in the typhoon period.However,the simulated MLD without the wave-induced vertical mixing,evolution from 13 to 32 m,was seriously underestimated.The surface wave is too important to be ignored for the ocean responses to a typhoon. |
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| Keywords: | typhoon wave-induce mixing ocean temperature response |
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