An eigen analysis of the interdecadal changes in the structure and frequency of ENSO mode
An eigen analysis of the interdecadal changes in the structure and frequency of ENSO mode
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DOI：
10.1029/1999gl011090
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发表时间：
2000-08
影响因子：
5.2
通讯作者：
S. An;F. Jin
中科院分区：
文献类型：
--
作者：
S. An;F. Jin
通过对一个简单海气耦合模式的特征分析，探讨了厄尔尼诺-南方涛动（ENSO）模态年代际变化的机制。结果表明，观测到的年代际气候变化可以有效地改变ENSO模式的两个主要耦合反馈，即纬向平流和温跃层反馈的强度。这些修改导致的定量变化的主导耦合模式在其频率，增长率和空间格局，这是与观察一致。
The mechanisms of interdecadal changes of El Niño‐Southern Oscillation (ENSO) modes are examined through an eigen analysis of a simple coupled ocean‐atmosphere model. It is shown that the observed interdecadal climate shift can effectively modify the strength of two major coupled feedbacks for the ENSO mode, namely, the zonal advection and thermocline feedbacks. These modifications lead to quantitative changes of the leading coupled mode in its frequency, growth rate, and spatial pattern, which are consistent with the observation.