A review of North Atlantic modes of natural variability and their driving mechanisms
A review of North Atlantic modes of natural variability and their driving mechanisms
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DOI：
10.1029/2009jd012728
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发表时间：
2009-12
影响因子：
--
通讯作者：
I. Grossmann;P. Klotzbach
中科院分区：
文献类型：
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作者：
I. Grossmann;P. Klotzbach
[1]本文综述了北大西洋自然变率的三种模态，即北大西洋涛动（NAO）、大西洋年代际涛动（AMO）和大西洋经向模态（AMM）。这份手稿的重点是这三个模式的几十年波动。以前已经提出了一系列不同的机制来启动这些模式在几十年的时间尺度上的相位反转。我们提出了一个系统的分组，这些机制分为三种类型，分别涉及，（1）的依赖性的大西洋温盐环流（THC）的盐度，（2）的THC的海洋热传输的变化的敏感性和（3）的依赖性的NAO的大西洋纬向温度梯度的变化。还提供了一些新的密度数据，证明THC和AMO之间的物理联系。
[1] This paper reviews three modes of natural variability that have been identified in the North Atlantic Ocean, namely, the North Atlantic Oscillation (NAO), the Atlantic Multidecadal Oscillation (AMO) and the Atlantic Meridional Mode (AMM). This manuscript focuses on the multidecadal fluctuations of these three modes. A range of different mechanisms to initiate phase reversals in these modes on multidecadal timescales has been suggested previously. We propose a systematic grouping of these mechanisms into three types that involve, respectively, (1) the dependency of the Atlantic thermohaline circulation (THC) on salinity, (2) the sensitivity of the THC to changes in ocean heat transport and (3) the dependency of the NAO to changes in the Atlantic meridional temperature gradient. Some new density data is also provided, demonstrating physical links between the THC and the AMO.