Oceanic forcing of the interhemispheric SST dipole associated with the Atlantic Multidecadal Oscillation
Oceanic forcing of the interhemispheric SST dipole associated with the Atlantic Multidecadal Oscillation
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与大西洋数十年振荡相关的半球间海温偶极子的海洋强迫
DOI：
10.1088/1748-9326/aacf66
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发表时间：
2018-07
影响因子：
6.7
通讯作者：
Li Yang
中科院分区：
文献类型：
--
作者：
Sun Cheng;Li Jianping;Li Xiang;Xue Jiaqing;Ding Ruiqiang;Xie Fei;Li Yang
在这项研究中，分析了大西洋多年代振荡（AMO）的半球海面温度（SST）特征，并在观测值和平板海洋模型（SOM）模拟之间进行了比较。观察性分析表明鲁棒
In this study, the interhemispheric sea surface temperature (SST) signature of the Atlantic Multidecadal Oscillation (AMO) is analyzed and compared between observations and slab ocean model (SOM) simulations. Observational analysis suggests a robust interhemispheric SST dipole across the Atlantic associated with the AMO, manifested by a strong inverse relationship between the AMO and subpolar South Atlantic decadal SST anomalies. None of the SOMs analyzed could reproduce the observed interhemispheric dipole of the AMO; instead, they consistently simulate an interhemispheric coherent SST pattern. In the SOMs, the North Atlantic decadal SST anomalies synchronize the variations of South Atlantic SST through a cross-hemispheric atmosphere teleconnection and thermodynamic processes. This discrepancy between the SOM simulations and the observation is possibly due to deficiencies in representing ocean dynamical processes. Further analyses of the fully coupled versions of the SOMs suggest that the observed interhemispheric dipole of the AMO can be reproduced only by including ocean dynamics related to the Atlantic meridional overturning circulation. Our findings highlight that the ocean dynamics play a non-negligible role and should be taken into consideration in better understanding the observed feature of the AMO.
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影响因子：
4.6
作者：
J. Mecking;N. Keenlyside;R. Greatbatch
通讯作者：
J. Mecking;N. Keenlyside;R. Greatbatch
影响因子：
5.2
作者：
Rong‐Hua Zhang;T. Delworth
通讯作者：
Rong‐Hua Zhang;T. Delworth
对比观测与板片海洋模型模拟之间的大西洋多年代际振荡的空间结构
影响因子：
4.6
作者：
Sun Cheng;Li Jianping;Kucharski Fred;Xue Jiaqing;Li Xiang
通讯作者：
Li Xiang
大西洋数十年变率对西伯利亚暖季降水的远程影响
影响因子：
4.6
作者：
Sun C;Li J;Zhao S
通讯作者：
Zhao S
影响因子：
64.8
作者：
Barker, Stephen;Diz, Paula;Broecker, Wallace S.
通讯作者：
Broecker, Wallace S.