Wind energy input in coastal seas east of China

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• 作者：Nan Zang (12147) (22147)
  Dexing Wu (12147)
  
• 关键词：energy ; wind stress ; Bohai Sea ; Yellow Sea ; East China Sea
• 刊名：Chinese Journal of Oceanology and Limnology
• 出版年：2013
• 出版时间：May 2013
• 年：2013
• 卷：31
• 期：3
• 页码：648-655
• 全文大小：1308KB
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• 作者单位：Nan Zang (12147) (22147)
  Dexing Wu (12147)
  
  12147. Physical Oceanography Laboratory, Ocean University of China, Qingdao, 266000, China
  22147. Key Laboratory of Ocean Circulation and Waves, Institutes of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
  
• ISSN：1993-5005

文摘

This study investigates the wind energy input, an important source of mechanical energy, in the coastal seas east of China. Using the wind field from the high-resolution sea surface meteorology dataset in the Bohai Sea, Yellow Sea, and East China Sea, we studied the wind energy input through surface ageostrophic currents and surface waves. Using a simple analytical formula for the Ekman Spiral with timedependent wind, the wind energy input through ageostrophic currents was estimated at 2 GW averaged from 1960 to 2007, and through use of an empirical formula, the wind energy input through surface waves was estimated at 69 GW. We also examined the seasonal variation and long-term tendency of mechanical energy from wind stress, and found that the wind energy input to the East China Sea decreased before the 1980s, and then subsequently increased, which is contrary to what has been found for the Bohai Sea and Yellow Sea. More complicated physical processes and varying diffusivity need to be taken into account in future studies.