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首页> 外文期刊>Dynamics of Atmospheres and Oceans >Diagnosing the spatiotemporal diversity of westerly wind events in the tropical Pacific
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Diagnosing the spatiotemporal diversity of westerly wind events in the tropical Pacific

机译：诊断热带太平洋西风事件的时空多样性

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摘要

Westerly Wind Events (WWEs) over the tropical Pacific are characterized by their spatiotemporal diversity and classified into six types based on their different locations and durations. Various types of WWEs exhibit quite different characteristics in terms of their amplitudes. The long events with a 10-30-day duration are stronger than the short events with a 6-10-day duration, and the maximum amplitudes of the Central-Pacific (C) type and Eastern-Pacific (E) type of long events are larger than the Western-Pacific (W) type of long ones. The evolutions of these six types of WWEs are also quite different. The W-type short and long events and the C-type long events show a distinct eastward propagation, whereas the C-type short events and the E-type short and long events have no apparent propagation direction. We demonstrate that such a difference in the eastward propagation of WWEs can be significantly associated with the Madden-Julian Oscillation (MJO). The W-type events are more influenced heavily by the MJO, as indicated by their more distinct eastward propagation patterns, than the two other types of WWEs. In addition to the MJO, the convectively coupled Kelvin waves are also associated with the WWEs, especially for the short events.
机译：热带太平洋上的西风事件（WWE）以其时空多样性为特征，并根据其不同的位置和持续时间分为六类。各种类型的WWE在振幅方面表现出完全不同的特征。持续时间为10-30天的长事件要强于持续时间为6-10天的短事件，长事件的中太平洋（C）类型和东太平洋（E）类型的最大振幅大于西太平洋（W）型的长型。这六种WWE的演变也大不相同。 W型短事件和长事件和C型长事件表现出明显的向东传播，而C型短事件和E型短事件和长事件没有明显的传播方向。我们证明了WWE向东传播的这种差异可以与Madden-Julian振荡（MJO）显着相关。与其他两种类型的WWE相比，W型事件受MJO的影响更大，这是由MJO向东传播模式更为明显所表明的。除MJO外，对流耦合的开尔文波还与WWE相关联，特别是对于短时间事件。

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  • 来源
    《Dynamics of Atmospheres and Oceans》 |2019年第6期|90-103|共14页
  • 作者

    Hao Xiaozhen; Ren Hong-Li; Zhang Wenjun; Liu Minghong; Wei Yuntao;

  • 作者单位

    Nanjing Univ Informat Sci & Technol, Nanjing 210044, Jiangsu, Peoples R China|China Meteorol Adm, Natl Climate Ctr, Lab Climate Studies, Beijing 100081, Peoples R China|China Meteorol Adm, Natl Climate Ctr, CMA NJU Joint Lab Climate Predict Studies, Beijing 100081, Peoples R China;

    China Meteorol Adm, Natl Climate Ctr, Lab Climate Studies, Beijing 100081, Peoples R China|China Meteorol Adm, Natl Climate Ctr, CMA NJU Joint Lab Climate Predict Studies, Beijing 100081, Peoples R China|China Univ Geosci, Sch Environm Studies, Dept Atmospher Sci, Wuhan 430074, Hubei, Peoples R China;

    Nanjing Univ Informat Sci & Technol, Nanjing 210044, Jiangsu, Peoples R China;

    China Meteorol Adm, Natl Climate Ctr, Lab Climate Studies, Beijing 100081, Peoples R China|China Meteorol Adm, Natl Climate Ctr, CMA NJU Joint Lab Climate Predict Studies, Beijing 100081, Peoples R China;

    China Meteorol Adm, Natl Climate Ctr, Lab Climate Studies, Beijing 100081, Peoples R China|China Meteorol Adm, Natl Climate Ctr, CMA NJU Joint Lab Climate Predict Studies, Beijing 100081, Peoples R China|Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Westerly wind events; Spatiotemporal diversity; Structure characteristics; Madden-Julian oscillation; Convectively coupled Kelvin waves;

    机译：西风事件;时空分集;结构特征;Madden-Julian振荡;对流开尔文波;

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