| DOI: | 10.1038/s41561-020-0532-2
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| 论文题名: | Rapid transfer of oxygen to the deep ocean mediated by bubbles |
| 作者: | Atamanchuk D.; Koelling J.; Send U.; Wallace D.W.R.
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| 刊名: | Nature Geoscience
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| ISSN: | 17520894
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| 出版年: | 2020
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| 卷: | 13, 期:3 | | 语种: | 英语
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| 英文摘要: | The concentration of oxygen exerts major controls on life in the ocean, and its distribution in the ocean and atmosphere carries information about biological productivity, transports of mass and heat, ocean deoxygenation and global carbon sinks. Our understanding of processes underlying oxygen distributions, their key features and variability is often lacking. Here we investigate the magnitude, variability and uncertainty of the air–sea flux of oxygen, carbon dioxide and atmospheric potential oxygen over an annual cycle in the Labrador Sea. We demonstrate that two-thirds of the annual oxygen uptake occurs over only 40 days in winter and is associated with a bubble-mediated component of air–sea gas transfer linked to episodic high winds, strong cooling and deep convective mixing. By neglecting the bubble-mediated flux component, global models may underestimate oxygen and atmospheric potential oxygen uptake in regions of convective deep-water formation by up to an order of magnitude. Uncertainties in wind speed products lead to additional major (up to 80%) uncertainty in air–sea fluxes in these critical regions. Our findings may help explain observation–model discrepancies in distributions of atmospheric potential oxygen and imply that oxygen levels in the deep ocean are more sensitive to climate change than currently thought. © 2020, The Author(s), under exclusive licence to Springer Nature Limited. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/159084
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| Appears in Collections: | 气候变化与战略
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作者单位: | Department of Oceanography, Dalhousie University, Halifax, NS, Canada; Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States
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| Recommended Citation: | |
Atamanchuk D.,Koelling J.,Send U.,et al. Rapid transfer of oxygen to the deep ocean mediated by bubbles[J]. Nature Geoscience,2020-01-01,13(3)
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