A numerical modeling study on the energy budgets of the general circulation of the ocean

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  • Urakawa L. Shogo
    The First Research Laboratory, Oceanography and Geochemistry Research Department, Meteorological Research Institute, Japan Meteorological Agency

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Other Title
  • 海洋大循環のエネルギー収支に関する数値モデリング研究
  • 2018年度日本海洋学会岡田賞受賞記念論文 海洋大循環のエネルギー収支に関する数値モデリング研究
  • 2018ネンド ニホン カイヨウ ガッカイ オカダショウ ジュショウ キネン ロンブン カイヨウ ダイ ジュンカン ノ エネルギー シュウシ ニ カンスル スウチ モデリング ケンキュウ

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<p>The general circulation of the ocean has been classified into two types of circulation: winddriven circulation, represented by gyres, and thermohaline circulation, driven by surface buoyancy flux. The latter circulation type is the deep ocean circulation characterized by local deepwater formation at high latitudes and deep-water upwelling over other vast areas. This deep circulation is considered to play an important role in the climate because it involves large transport of heat and materials such as nutrients and carbon compounds. The author investigated its driving mechanisms from the viewpoint of energetics through energy budget analysis of numerical models. The study extends the analysis to enhancement of the thermohaline circulation due to winds over the Southern Ocean and to geothermal heating, quantification of potential energy sinks and the role of the nonlinearity of the equation of state (EoS), water mass transformation and the enhancement of the thermohaline circulation due to the nonlinear effects of EoS, and importance of the nonlinearity of EoS in the available potential energy budget.</p>

Journal

  • Oceanography in Japan

    Oceanography in Japan 28 (2), 19-40, 2019-03-15

    The Oceanographic Society of Japan

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