| 印度洋海气热通量交换研究 |
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| 引用本文： | 周天军,张学洪.印度洋海气热通量交换研究[J].大气科学,2002,26(2):161-170. |
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| 作者姓名： | 周天军 张学洪 |
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| 作者单位： | 中国科学院大气物理研究所大气科学与地球流体力学数值模拟国家重点实验室,北京,100029 |
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| 基金项目： | 国家自然科学基金资助项目40005004、中国科学院创新项目KZCX2-108和"王宽诚博士后奖励基金"联合资助 |
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| 摘 要： | 基于综合海洋大气资料集(COADS)资料的研究表明,热带印度洋的海气热通量交换具有明显的区域性特征,在部分海域,如冬季热带印度洋的中东部、夏季的热带西印度洋和北印度洋,它主要表现为海洋对大气的强迫.海洋对大气的这种强迫,主要是通过潜热加热实现的.与潜热加热相比,感热加热尽管是一个小量,但感热异常与表层海温的显著相关,较之潜热明显超前.无论冬季还是夏季,热带印度洋都存在大面积海域,其SST变化难以通过海气热通量交换来解释.
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| 关 键 词： | 印度洋 热通量 潜热 感热 |
The Air-Sea Heat Flux Exchange in the Indian Ocean |
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| Zhou Tianjun and Zhang Xuehong.The Air-Sea Heat Flux Exchange in the Indian Ocean[J].Chinese Journal of Atmospheric Sciences,2002,26(2):161-170. |
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| Authors: | Zhou Tianjun and Zhang Xuehong |
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| Abstract: | The fundamental character of the air-sea heat flux exchange in the Indian Ocean has been inspected based on the UWM / COADS dataset. The results show that the connection between the net surface heat flux and SST is strong in the tropical Indian Ocean, especially in the wintertime central-eastern Indian Ocean, and the summertime tropical western and northern Indian Ocean. In the meantime, the correlation between the anomalous net heat flux and the SST tendency anomaly is weak, indicating that the air-sea energy fluxes in these regions are forced by the evolution of SST anomalies. Normalized covariance analysis shows that the forcing of the atmosphere by the ocean is dominated mainly by the latent heat release. Though the magnitude of sensible heat flux is small in comparison with that of the latent heat component, the significant correlation between the sensible heat flux and SST anomaly leads to a correlation between the latent heat flux and SST anomaly obviously. In other parts of the tropical Indian Ocean, the evolution of SST anomaly has little connection with the net sur- face energy flux, and is suggested to be dominated by the ocean dynamical process. |
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| Keywords: | Indian Ocean air-sea heat flux exchange latent heat sensible heat |
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