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The Recent Atlantic Cold Anomaly: Causes, Consequences, and Related Phenomena
Annual Review of Marine Science ( IF 14.3 ) Pub Date : 2018-01-03 00:00:00 , DOI: 10.1146/annurev-marine-121916-063102
Simon A. Josey 1 , Joel J.-M. Hirschi 1 , Bablu Sinha 1 , Aurélie Duchez 1 , Jeremy P. Grist 1 , Robert Marsh 2
Affiliation  

Cold ocean temperature anomalies have been observed in the mid- to high-latitude North Atlantic on interannual to centennial timescales. Most notably, a large region of persistently low surface temperatures accompanied by a sharp reduction in ocean heat content was evident in the subpolar gyre from the winter of 2013–2014 to 2016, and the presence of this feature at a time of pervasive warming elsewhere has stimulated considerable debate. Here, we review the role of air-sea interaction and ocean processes in generating this cold anomaly and place it in a longer-term context. We also discuss the potential impacts of surface temperature anomalies for the atmosphere, including the North Atlantic Oscillation and European heat waves; contrast the behavior of the Atlantic with the extreme warm surface event that occurred in the North Pacific over a similar timescale; and consider the possibility that these events represent a response to a change in atmospheric planetary wave forcing.

中文翻译:


最近的大西洋冷异常:成因,后果和相关现象

在年际至百年尺度上,在中高纬度北大西洋观测到冷海温度异常。最值得注意的是,从2013年至2014年冬季至2016年,在极地极回旋区,明显存在着地表温度持续偏低的大区域,伴随着海洋热量的急剧减少,而在其他地方普遍变暖时,这一特征的存在引发了很多争论。在这里,我们回顾了海-气相互作用和海洋过程在产生这种冷异常中的作用,并将其置于较长期的背景下。我们还将讨论地表温度异常对大气的潜在影响,包括北大西洋涛动和欧洲热浪。将大西洋的行为与在类似时间尺度上发生在北太平洋的极端温暖的地表事件进行对比;并考虑这些事件代表对大气行星波强迫变化的响应的可能性。

更新日期:2018-01-03
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