The influence of ENSO on winter North Atlantic climate
The influence of ENSO on winter North Atlantic climate
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DOI：
10.1029/2006gl027881
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发表时间：
2006-12
影响因子：
5.2
通讯作者：
T. Toniazzo;Adam A. Scaife
中科院分区：
文献类型：
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作者：
T. Toniazzo;Adam A. Scaife
尽管厄尔尼诺-南方涛动对太平洋盆地和北美地区温带气候的影响已得到充分证实，但对于ENSO是否对北大西洋和西欧地区产生可重复的影响，尚未达成明确共识。在这项研究中，我们对过去的厄尔尼诺遥相关进行了修订分析。通过根据振幅对厄尔尼诺事件进行分层，我们发现对 ENSO 的高度非线性但稳健的响应，随着厄尔尼诺异常振幅的增加，北大西洋东部的信号发生变化。使用大气环流模型进行的一系列实验的结果表明，考虑到热带太平洋海面温度异常，对强 ENSO 事件的响应是可重复的。对中等厄尔尼诺事件的反应类似于先前研究中发现的北大西洋涛动的负相位。
Although the influence of the El Niño ‐ Southern Oscillation on the extra‐tropical climate is well established for the Pacific basin and North American regions, there is no clear consensus as to whether there are reproducible effects from ENSO on the North Atlantic and West European regions. In this study we present a revised analysis of past El‐Niño teleconnections. By stratifying El‐Niño events according to amplitude, we find a highly non‐linear yet robust response to ENSO that changes sign over the eastern North Atlantic as the amplitude of the El‐Niño anomaly increases. Results from a series of experiments with a general circulation model indicate that the response to strong ENSO events is reproducible given the sea‐surface temperature anomalies in the tropical Pacific. The response to moderate El‐Niño events resembles the negative phase of the North Atlantic Oscillation as found in previous studies.