| Effect of air-sea temperature difference on the momentum exchange between air and sea for fetch-limited cases |
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| 作者姓名： | Cheng Zhan Wu Shaohua |
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| 作者单位： | National Marine Environment Forecasting Center, State Oceanic Administration, Beijing 100081, China;National Marine Environment Forecasting Center, State Oceanic Administration, Beijing 100081, China |
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| 基金项目： | The project is supported by National Natural Science Foundation. |
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| 摘 要： | Ｅｆｆｅｃｔ ｏｆ ａｉｒ－ｓｅａ ｔｅｍｐｅｒａｔｕｒｅ ｄｉｆｆｅｒｅｎｃｅ ｏｎ ｔｈｅ ｍｏｍｅｎｔｕｍ ｅｘｃｈａｎｇｅ ｂｅｔｗｅｅｎ ａｉｒ ａｎｄ ｓｅａ ｆｏｒ ｆｅｔｃｈ－ｌｉｍｉｔｅｄ ｃａｓｅｓＣｈｅｎｇＺｈａｎａｎｄＷｕＳｈ...
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| 关 键 词： | Drag coefflcient atmospheric stability fetch |
| 收稿时间： | 1995/9/25 0:00:00 |
| 修稿时间： | 1995/10/8 0:00:00 |
Effect of air-sea temperature difference on the momentum exchange between air and sea for fetch-limited cases |
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| Cheng Zhan,Wu Shaohua.Effect of air-sea temperature difference on the momentum exchange between air and sea for fetch-limited cases[J].Acta Oceanologica Sinica,1995,14(4):499-508. |
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| Authors: | Cheng Zhan and Wu Shaohua |
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| Institution: | National Marine Environment Forecasting Center, State Oceanic Administration, Beijing 100081, China |
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| Abstract: | The atmospheric boundaly layer over sea surface is simplified as mixed convection of turbulent boundary lay er flow over a horizontal plate, and the momentum exchange between wind and waves is also included in the model. Ef fects of wind speed, air-sea temperature difference and fetch on the momentum exchange between air and sea are re vealed. The turbulence model used in calculating boundary layer is an extended version of the Van Driest mixing lengthmodel, and a combined theoretical and semi-empirical approach is employed in estimating the effect of ocean waves. Forfetch-limited cases, i. e. wind blows off sea shore for a limited distance. fetch plays a fundamental role in the air-sea mo mentum exchange under different air-sea temperature conditions, which is not discussed in previous studies. |
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| Keywords: | Drag coefflcient atmospheric stability fetch |
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