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Thermal structure of hot events and their possible role in maintaining the warm isothermal layer in the Western Pacific warm pool

机译：热门事件的热结构及其在维持西太平洋温水池中温暖等温层的作用

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摘要

The short-lived events of high SST are called hot events (HEs) and can only be generated under the conditions of large daily heat gain due to strong solar radiation and weak wind. We investigated the thermal structure below HEs in the western equatorial Pacific by using in situ data obtained from TAO/TRITON buoys. We found that the occurrence of HEs can be identified by the typical vertical thermal structure within the isothermal layer. During the development stage of a HE, heat is accumulated in the surface layer due to strong solar radiation and weak wind, increasing temperature and creating strong stratification in the upper layer. During the decay stage, strong westerly winds induce current convergence which transports the heat from the upper layer to the deeper layer. Thus, temperature decreases at the surface and increases in the deeper layer. Furthermore, this mechanism indicates the important role of HEs in maintaining the warm isothermal layer in the western Pacific warm pool. The more HEs occur, the more heat in the surface layer gained from solar radiation is transported to the deeper layer. This process makes areas of frequent HE occurrences coincident with areas of warm pool. Since surface winds control the heat accumulation and heat transport in the isothermal layer by influencing current divergence and latent heat flux, surface winds become the key factor for the occurrence of HEs and the formation of the thermal structure in the Pacific warm pool.
机译：高级SST的短期事件称为热门事件（HES），只能在大型日常热量增益的情况下产生，由于强大的太阳辐射和弱风。我们通过使用从TAO / Triton浮标获得的原位数据来研究Western赤道太平洋以下HES的热结构。我们发现，可以通过等温层内的典型垂直热结构来识别HES的发生。在他的开发阶段，由于强烈的太阳辐射和弱风，增加温度并在上层产生强烈分层，在表面层中积聚热量。在衰减阶段，强大的西风风引起电流收敛，将热量从上层传送到更深层。因此，在表面处的温度降低并在更深层中增加。此外，这种机制表明HES在维持西太平洋温水池中的温暖等温层方面的重要作用。发生越多，从太阳辐射中获得的表面层中的热量越多被输送到更深层。这个过程使他频繁发生与温池区域一致的区域。由于表面风通过影响电流发散和潜热通量来控制等温层中的热量积聚和热传输，因此表面风成为HES发生的关键因素和太平洋温水池中的热结构的形成。

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  • 来源
    《Ocean Dynamics》 |2020年第6期|771-786|共16页
  • 作者

    Anindya Wirasatriya; Hiroshi Kawamura; Muhammad Helmi; Denny Nugroho Sugianto; Teruhisa Shimada; Kohtaro Hosoda; Gentur Handoyo; Yoppik Disma Girindra Putra; Magaly Koch;

  • 作者单位

    Department of Marine Sciences Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Indonesia Center for Coastal Rehabilitation and Disaster Mitigation Studies Diponegoro University Semarang Indonesia;

    Center for Atmospheric and Oceanic Studies Graduate School of Science Tohoku University Sendai Japan;

    Department of Marine Sciences Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Indonesia Center for Coastal Rehabilitation and Disaster Mitigation Studies Diponegoro University Semarang Indonesia;

    Department of Marine Sciences Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Indonesia Center for Coastal Rehabilitation and Disaster Mitigation Studies Diponegoro University Semarang Indonesia;

    Faculty of Science and Technology Hirosaki University Hirosaki Japan;

    WNI Forecast Center Weathernews Inc. Chiba Japan;

    Department of Marine Sciences Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Indonesia;

    Department of Marine Sciences Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Indonesia;

    Center for Remote Sensing Boston University Boston USA;

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  • 正文语种 eng
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  • 关键词

    Short-term high; Thermal stratification; TAO/TRITON buoys; Western Pacific warm pool;

    机译：短期高;热分层;Tao / Triton浮标;西太平洋温水游泳池;

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