DOI: 10.1002/2015GB005364
Scopus记录号: 2-s2.0-84973632343
论文题名: The influence of Southern Ocean winds on the North Atlantic carbon sink
作者: Bronselaer B ; , Zanna L ; , Munday D ; R ; , Lowe J
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 6 起始页码: 844
结束页码: 858
语种: 英语
英文关键词: carbon
; climate
; feedback
; ocean
; Southern Ocean
Scopus关键词: air-sea interaction
; atmospheric gas
; biogeochemistry
; biological production
; carbon dioxide
; carbon sink
; deep sea
; general circulation model
; upper ocean
; wind forcing
; Atlantic Ocean
; Atlantic Ocean (North)
; Massachusetts
; Southern Ocean
; United States
英文摘要: Observed and predicted increases in Southern Ocean winds are thought to upwell deep ocean carbon and increase atmospheric CO2. However, Southern Ocean dynamics affect biogeochemistry and circulation pathways on a global scale. Using idealized Massachusetts Institute of Technology General Circulation Model (MITgcm) simulations, we demonstrate that an increase in Southern Ocean winds reduces the carbon sink in the North Atlantic subpolar gyre. The increase in atmospheric CO2 due to the reduction of the North Atlantic carbon sink is shown to be of the same magnitude as the increase in atmospheric CO2 due to Southern Ocean outgassing. The mechanism can be described as follows: The increase in Southern Ocean winds leads to an increase in upper ocean northward nutrient transport. Biological productivity is therefore enhanced in the tropics, which alters the chemistry of the subthermocline waters that are ultimately upwelled in the subpolar gyre. The results demonstrate the influence of Southern Ocean winds on the North Atlantic carbon sink and show that the effect of Southern Ocean winds on atmospheric CO2 is likely twice as large as previously thought in past, present, and future climates. ©2016. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77849
Appears in Collections: 气候变化事实与影响
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作者单位: Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom; British Antarctic Survey, Cambridge, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom
Recommended Citation:
Bronselaer B,, Zanna L,, Munday D,et al. The influence of Southern Ocean winds on the North Atlantic carbon sink[J]. Global Biogeochemical Cycles,2016-01-01,30(6)