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首页> 外文期刊>Journal of Climate >Atlantic-Pacific Links in Observed Multidecadal SST Variability: Is the Atlantic Multidecadal Oscillation's Phase Reversal Orchestrated by the Pacific Decadal Oscillation?
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Atlantic-Pacific Links in Observed Multidecadal SST Variability: Is the Atlantic Multidecadal Oscillation's Phase Reversal Orchestrated by the Pacific Decadal Oscillation?

机译：观察到的MultiDecadal SST变异性的大西洋 - 太平洋链接：是太平洋二数振荡策划的大西洋多型振荡的相逆转吗？

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摘要

The Atlantic and Pacific basin are found linked in the context of multidecadal SST variability from analyses of 118 years of observational data. Recurrent spatiotemporal variability, including multidecadal modes, was identified using the extended-EOF technique in a longitudinally global domain, allowing unfettered expression of interbasin interactions. The physicality of the obtained decadal modes was assessed using fishery records and analog counts. A three-mode structure withbi-directional interbasin links frames the new perspective on the cycling of multidecadal SST variability. The three modes are the Atlantic multidecadal oscillation (AMO), low-frequency North Atlantic Oscillation (LF-NAO), and North Pacific decadal variability [PDV-NP; resembling negative (-ve) PDO]. The two previously documented links AMO -> PDV-NP (with similar to 12.5-yr lead) and LF-NAO -> AMO (with 16-yr lead) are corroborated, while a third one, PDV-NP ->(-LF-NAO) with similar to 6.5-yr lead, is uncovered. The interaction triad closes the loop on the cycling of multidecadal SST variability, generating AMO's phase reversal in similar to 35 years, consistent with its widely noted similar to 70-yr time scale. The two previously noted links-one intrabasin and one interbasin-were unsuccessful in this regard. Other findings include the deeper subsurface extensions of Atlantic multidecadal SST variability, and the hitherto unrecognized similarity of Pan-Pacific decadal variability and North Pacific Gyre Oscillation. Instrumental records, albeit short in the context of multidecadal variability, must continue to be mined for insights into the functioning of the climate system as its model representations while improving, remain inadequate.
机译：大西洋和太平洋盆地被发现在来自118年的观察数据的分析中的多视长SST可变性的背景下。在纵向全球域中的延长EOF技术鉴定包括多型型模式的复发性瞬发变异性，允许无预定的interbasin相互作用表达。使用渔业记录和模拟计数评估所获得的二等模式的物理性。三型结构与轴方向的Interbasin Links绘制了多视长SST可变性循环的新视角。这三种模式是大西洋多型振荡（AMO），低频北大西洋振荡（LF-NAO）和北太平洋近代变异[PDV-NP;类似于负（-VE）PDO]。先前记录的链接AMO - > PDV-NP（与12.5 yr铅相似）和LF-NaO - > AMO（带16 yr铅），而第三个，PDV-NP - >（ - LF -NAO）与6.5 yr铅相似，未被覆盖。互动三合会在多视长SST可变性的循环上关闭了环路，产生了类似于35年的AMO的相位逆转，这与其广泛指出的相似于70年来的时间尺度。这两位先前注意的链接 - 在这方面不成功的一个内胚和一个interbasin。其他调查结果包括大西洋多视野SST变异性的更深层次的延伸，以及泛太平洋二等差异性和北太平洋横振荡的迄今为止的无法识别的相似性。仪器记录虽然在多个内部变异性的背景下短暂，但必须继续开采洞察力，因为它的模型表示在改善的同时，仍然不足。

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