Eddy-induced variability of the Meridional Overturning Circulation in a model of the North Atlantic

Eddy-induced variability of the Meridional Overturning Circulation in a model of the North Atlantic
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北大西洋模型中涡流引起的经向翻转环流的变化

DOI:
10.1002/grl.50532
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发表时间:
2013
影响因子:
5.2
通讯作者:
Xiaoming Zhai
Xiaoming Zhai
中科院分区:
地球科学1区
文献类型:
--
作者:
M. Thomas;Xiaoming Zhai

文献摘要

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相似文献

对大西洋经向翻转环流(AMOC)的观测表明,它在所有时间尺度上都是变化的。在这里,我们隔离的贡献,涡动AMOC变率使用涡动允许模式驱动的气候和稳定的强迫北大西洋。涡动引起的AMOC变率被发现是无处不在的,在所有纬度的显着,在亚热带的季节性周期的幅度相媲美。此外,涡动引起的AMOC变化不仅表现在高频率,但也在年际和更长的时间尺度。这些结果意味着,一个显着的部分AMOC的变化本质上是不可预测的季节性年际时间尺度。
Observations of the Atlantic Meridional Overturning Circulation (AMOC) show that it varies on all timescales. Here we isolate the contribution of eddies to AMOC variability using an eddy-permitting model of the North Atlantic driven by climatological and steady forcing. The eddy-induced AMOC variability is found to be ubiquitous and significant at all latitudes, with a magnitude comparable to the seasonal cycle in the subtropics. Furthermore, the eddy-induced AMOC variability is manifested not only at high frequencies but also at interannual and longer timescales. These results imply that a significant fraction of the AMOC variability is inherently unpredictable at seasonal to interannual timescales.
DOI: 10.5194/os-9-805-2013
发表时间: 2013
期刊: Ocean Science
影响因子: 3.2
作者:
Hirschi J
通讯作者: Hirschi J
DOI: 10.1016/j.ocemod.2011.11.008
发表时间: 2012-01-01
期刊: OCEAN MODELLING
影响因子: 3.2
作者:
Blaker, Adam T.;Hirschi, Joel J-M.;Madec, Gurvan
通讯作者: Madec, Gurvan