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Formation of well-mixed warm water column in central Bohai Sea during summer: Role of high-frequency atmospheric forcing
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2017
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Source: Journal of Ocean University of China, 16(6), 945-952
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Journal Title:Journal of Ocean University of China
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Description:The influence of high-frequency atmospheric forcing on the formation of a well-mixed summer warm water column in the central Bohai Sea is investigated comparing model simulations driven by daily surface forcing and those using monthly forcing data. In the absence of high-frequency atmospheric forcing, numerical simulations have repeatedly failed to reproduce this vertically uniform column of warm water measured over the past 35 years. However, high-frequency surface forcing is found to strongly influence the structure and distribution of the well-mixed warm water column, and simulations are in good agreement with observations. Results show that high frequency forcing enhances vertical mixing over the central bank, intensifies downward heat transport, and homogenizes the water column to form the Bohai central warm column. Evidence presented shows that high frequency forcing plays a dominant role in the formation of the well-mixed warm water column in summer, even without the effects of tidal and surface wave mixing. The present study thus provides a practical and rational way of further improving the performance of oceanic simulations in the Bohai Sea and can be used to adjust parameterization schemes of ocean models.
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Source:Journal of Ocean University of China, 16(6), 945-952
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ISSN:1672-5182;1993-5021;
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Rights Information:Accepted Manuscript
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