Pacific and Atlantic multidecadal variability in the Kiel Climate Model
Pacific and Atlantic multidecadal variability in the Kiel Climate Model
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DOI：
10.1029/2010gl045560
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发表时间：
2010-12
影响因子：
5.2
通讯作者：
W. Park;M. Latif
中科院分区：
文献类型：
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作者：
W. Park;M. Latif
太平洋年代际变率(PDV)和大西洋年代际变率(AMV)是观测到的北半球海温(SST)变率的两种主要的年代际模式，在基尔气候模式(KCM)的千年控制积分中被研究。结果表明，这两种现象在模式中是相互独立的，通过模式SST的主振荡模式(POP)分析可以很容易地将它们分开。与PDV相关的变率覆盖整个北太平洋，在中纬度北太平洋和热带西太平洋都有强烈的信号。在东印度洋地区也模拟到了强烈的信号。然而，PDV的记忆驻留在北太平洋，并与副热带环流有关。AMV机制与大西洋经向翻转环流(AMOC)有关。随机机制适用于PDV和AMV。
Pacific decadal variability (PDV) and Atlantic multidecadal variability (AMV), the two leading decadal modes of observed Northern Hemisphere sea surface temperature (SST) variability, are investigated in a multi‐millennial control integration of the Kiel Climate Model (KCM). It is shown that the two phenomena are independent modes in the model and can be easily separated by Principal Oscillation Pattern (POP) analysis of model SST. PDV‐related variability covers the whole North Pacific with strong signals in both the mid‐latitude North Pacific and the western Tropical Pacific. Strong signals are also simulated in the eastern Indian Ocean Sector. PDV's memory, however, resides in the North Pacific and is linked to the subtropical gyre. The AMV mechanism is related to the Atlantic meridional overturning circulation (AMOC). A stochastic mechanism applies to both PDV and AMV.