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首页> 外文期刊>Journal of oceanography >Climatology of hot events in the western equatorial Pacific
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Climatology of hot events in the western equatorial Pacific

机译：赤道西太平洋热点事件的气候学

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摘要

We investigated the climatology of hot events (HEs) in the western equatorial Pacific. HEs are characterized by well-organized high sea surface temperatures (SSTs). We proposed a method for identifying HEs using a space-time-dependent threshold with a minimum areal size of 2 × 10~6 km~2, and with a duration (period) of ＞6 days. We thus identified 71 HEs from the optimally interpolated SST dataset during 2003-2011. Their mean duration, areal size, and amplitude were 18.14 days, 6.30 × 10~6 km~2, and 0.33 ℃, respectively. On average, the HEs developed more slowly than they decayed. They were distributed within the equatorial band to the subtropical Pacific (20°S-30°N), with an eastward extension to 150°W. In particular, the HEs occurred most frequently along the northern coasts of New Guinea and the Solomon Islands to 180°E. Seasonal variation in the HE distribution was observed: a northward shift during boreal summer and a southward shift during boreal winter. The distribution of HE occurrences corresponded to the climatological SST of the western Pacific warm pool. HEs occurred under conditions of low wind speeds (～2.56 m/s) and high levels of solar radiation (～225 W/m~2). However, since the high levels of solar radiation occurred over the entire area of the western equatorial Pacific during HE periods, the low wind speed distribution became a key factor in the occurrence of HEs in the western equatorial Pacific. Seasonal shifts in wind speed and solar radiation were found to influence the seasonal shift in HE distribution.
机译：我们调查了赤道西太平洋的高温事件（HE）的气候。 HE的特征是组织良好的高海面温度（SST）。我们提出了一种基于时空的阈值来识别HE的方法，该阈值的最小面积为2×10〜6 km〜2，持续时间（周期）＞ 6天。因此，我们从2003-2011年的最佳插值SST数据集中确定了71个HE。它们的平均持续时间，面积和振幅分别为18.14天，6.30×10〜6 km〜2和0.33℃。平均而言，HE的发展比其衰落要慢。它们在赤道带内分布到亚热带太平洋（20°S-30°N），向东扩展到150°W。特别是，HE沿新几内亚和所罗门群岛的北部海岸至180°E的发生频率最高。观察到HE分布的季节性变化：在北方夏季发生北移，在北方冬季发生南移。 HE事件的分布与西太平洋暖池的气候SST相对应。 HEs发生在低风速（〜2.56 m / s）和高水平的太阳辐射（〜225 W / m〜2）的条件下。但是，由于高辐射期间西赤道太平洋整个区域都发生了高水平的太阳辐射，因此低风速分布成为西赤道太平洋发生高能卫星的关键因素。发现风速和太阳辐射的季节性变化会影响HE分布的季节性变化。

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  • 来源
    《Journal of oceanography》 |2015年第1期|77-90|共14页
  • 作者

    Anindya Wirasatriya; Hiroshi Kawamura; Teruhisa Shimada; Kohtaro Hosoda;

  • 作者单位

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

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

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

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

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    High SST; Hot event; Merged SST; Western Pacific warm pool;

    机译：高SST;热门事件;合并SST;西太平洋温水游泳池;

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