Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091935 |
Oceanic Pathways of an active Pacific Meridional Overturning Circulation (PMOC) | |
M. D. Thomas; A. V. Fedorov; N. J. Burls; W. Liu | |
2021-05-04 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | In contrast to the modern‐day climate, North Pacific deep water formation and a Pacific Meridional Overturning Circulation (PMOC) may have been active during past climate conditions, in particular during the Pliocene epoch (some 3‐5 million years ago). Here, we use a climate model simulation with a robust PMOC cell to investigate the pathways of North Pacific deep water from subduction to upwelling, as revealed by Lagrangian particle trajectories. We find that similar to the present‐day Atlantic Meridional Overturning Circulation (AMOC), most subducted North Pacific deep water upwells in the Southern Ocean. However, roughly 15% upwells instead in the tropical Indo‐Pacific Oceans ‐ a key feature distinguishing the PMOC from the AMOC. The connection to the Indian Ocean is relatively fast at about 250 years. The connection to the tropical Pacific is slower ( ∼800 years) as water first travels to the subtropical South Pacific then gradually upwells through the thermocline. |
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/325831 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | M. D. Thomas,A. V. Fedorov,N. J. Burls,et al. Oceanic Pathways of an active Pacific Meridional Overturning Circulation (PMOC)[J]. Geophysical Research Letters,2021. |
APA | M. D. Thomas,A. V. Fedorov,N. J. Burls,&W. Liu.(2021).Oceanic Pathways of an active Pacific Meridional Overturning Circulation (PMOC).Geophysical Research Letters. |
MLA | M. D. Thomas,et al."Oceanic Pathways of an active Pacific Meridional Overturning Circulation (PMOC)".Geophysical Research Letters (2021). |
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