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<p>Using the high-resolution outputs from the Coupled Regional Climate Model (CRCM), this study investigates the kinetic energy budget and the role of wind power in the Kuroshio-Oyashio Extension (KOE) region. CRCM reproduces key features of the KOE circulation system, including the oceanic current, eddy activity, and wind patterns. Energy budget analysis reveals a balance between vertical mixing and pressure work as the main regulators of kinetic energy, with nonlinear effects and horizontal mixing playing a secondary role. Furthermore, the study identifies a peak of kinetic energy at 250&#xa0;km, and an inverse energy cascade with energy flux from small to large scales. Wind power analysis shows that it injects energy into the ocean at large scales and extracts energy at mesoscale and smaller scales, influencing vertical mixing. Work of time-mean wind stress on circulation fluctuations potentially regulating the energy cascade. This study provides insights into the kinetic energy in spectrum and role of wind power of the KOE region.</p>

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Oceanic kinetic energy in the spectral space and role of wind power in the Kuroshio-Oyashio extension

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Mingkui Li,
  • Haiyuan Yang,
  • Jinzhuo Cai,
  • Zhaohui Chen,
  • Lixin Wu

摘要

Using the high-resolution outputs from the Coupled Regional Climate Model (CRCM), this study investigates the kinetic energy budget and the role of wind power in the Kuroshio-Oyashio Extension (KOE) region. CRCM reproduces key features of the KOE circulation system, including the oceanic current, eddy activity, and wind patterns. Energy budget analysis reveals a balance between vertical mixing and pressure work as the main regulators of kinetic energy, with nonlinear effects and horizontal mixing playing a secondary role. Furthermore, the study identifies a peak of kinetic energy at 250 km, and an inverse energy cascade with energy flux from small to large scales. Wind power analysis shows that it injects energy into the ocean at large scales and extracts energy at mesoscale and smaller scales, influencing vertical mixing. Work of time-mean wind stress on circulation fluctuations potentially regulating the energy cascade. This study provides insights into the kinetic energy in spectrum and role of wind power of the KOE region.