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首页> 外文期刊>Advances in Atmospheric Sciences >ENSO phase-locking in an ocean-atmosphere coupled model FGCM-1.0
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ENSO phase-locking in an ocean-atmosphere coupled model FGCM-1.0

机译：海洋大气耦合模型FGCM-1.0中的ENSO锁相

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摘要

The mean climatology and the basic characteristics of the ENSO cycle simulated by a coupled model FGCM-1.0 are investigated in this study. Although with some common model biases as in other directly coupled models, FGCM-1.0 is capable of producing the interannual variability of the tropical Pacific, such as the ENSO phenomenon. The mechanism of the ENSO events in the coupled model can be explained by “delayed oscillator” and “recharge-discharge” hypotheses. Compared to the observations, the simulated ENSO events show larger amplitude with two distinctive types of phase-locking: one with its peak phase-locked to boreal winter and the other to boreal summer. These two types of events have a similar frequency of occurrence, but since the second type of event is seldom observed, it may be related to the biases of the coupled model. Analysis show that the heat content anomalies originate from the central south Pacific in the type of events peaking in boreal summer, which can be attributed to a different background climatology from the normal events. The mechanisms of their evolutions are also discussed.
机译：本研究研究了耦合模型FGCM-1.0模拟的ENSO周期的平均气候和基本特征。尽管FGCM-1.0与其他直接耦合模型一样，存在一些常见的模型偏差，但它能够产生热带太平洋的年际变化，例如ENSO现象。耦合模型中ENSO事件的机制可以用“延迟振荡器”和“充放电”假说来解释。与观测值相比，模拟的ENSO事件显示出更大的振幅，具有两种独特的锁相类型：一种具有峰值锁相于北方冬季，另一种具有北方夏季。这两种类型的事件具有相似的发生频率，但是由于很少观察到第二种类型的事件，因此它可能与耦合模型的偏差有关。分析表明，热量含量异常起源于北太平洋中部，其类型在夏季寒潮达到顶峰，这可以归因于与正常事件不同的背景气候。还讨论了它们进化的机制。

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  • 来源
    《Advances in Atmospheric Sciences》 |2007年第5期|833-844|共12页
  • 作者

    Weipeng Zheng 郑伟鹏; Yongqiang Yu 俞永强;

  • 作者单位

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China;

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China;

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  • 正文语种 eng
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  • 关键词

    ENSO; phase-locking; coupled model;

    机译：ENSO锁相耦合模型;

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