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DOI | 10.1029/2021GL095990 |
Disentangling Internal and External Contributions to Atlantic Multidecadal Variability over the Past Millennium | |
Shih-Wei Fang; Myriam Khodri; Claudia Timmreck; Davide Zanchettin; Johann Jungclaus | |
2021-11-11 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The Atlantic Multidecadal Variability (AMV) modulates the North Atlantic surface ocean variability and affects decadal climates over the globe; its underlying mechanisms remain, however, under debate. In this study, we use a multi-model ensemble of transient past-millennium (850-1849) and unperturbed preindustrial control simulations contributing to the Paleoclimate Modelling Intercomparison Project - Phase 4 (PMIP4) to decompose the AMV signal into the internal AMV and the external signal. The internal component of AMV exhibits no robust behavior across simulations during periods of major forcing such as strong volcanic eruptions, whereas the external forced temperature responds to volcanic eruptions with an immediate radiative cooling followed, in some simulations, by a sequence of damped multidecadal oscillations. The internal component tightly relates with the Atlantic meridional overturning circulation (AMOC) and dominates the fluctuations of AMV; whereas the external signal has limited impacts on AMOC and explains ∼25% of the AMV variance over the past millennium. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/340882 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Shih-Wei Fang,Myriam Khodri,Claudia Timmreck,et al. Disentangling Internal and External Contributions to Atlantic Multidecadal Variability over the Past Millennium[J]. Geophysical Research Letters,2021. |
APA | Shih-Wei Fang,Myriam Khodri,Claudia Timmreck,Davide Zanchettin,&Johann Jungclaus.(2021).Disentangling Internal and External Contributions to Atlantic Multidecadal Variability over the Past Millennium.Geophysical Research Letters. |
MLA | Shih-Wei Fang,et al."Disentangling Internal and External Contributions to Atlantic Multidecadal Variability over the Past Millennium".Geophysical Research Letters (2021). |
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