DOI: 10.1002/2013GB004682
Scopus记录号: 2-s2.0-84887867710
论文题名: Air-sea disequilibrium of carbon dioxide enhances the biological carbon sequestration in the Southern Ocean
作者: Ito T ; , Follows M ; J
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 4 起始页码: 1129
结束页码: 1138
语种: 英语
英文关键词: carbon
; Southern ocean
Scopus关键词: Air-sea disequilibrium
; Carbon sequestration
; Linear relationships
; Nutrient utilization
; Ocean biogeochemistry models
; Organic materials
; Southern ocean
; Wind driven upwelling
; Carbon
; Carbon dioxide
; Forestry
; Oceanography
; Organic carbon
; air-sea interaction
; biogeochemical cycle
; carbon dioxide
; carbon sequestration
; phase equilibrium
; remineralization
; surface water
; Southern Ocean
英文摘要: Sinking and subduction of organic material removes carbon from the surface ocean and stores it in inorganic form after remineralization. The wind-driven upwelling of deep waters, notably in the Southern Ocean, counteracts the biological carbon sequestration by returning excess carbon from the abyss, potentially releasing it back to the atmosphere. Numerical models have shown that significant fraction of the excess carbon in the Antarctic Surface Water is not degassed to the atmosphere but reenters into the deep ocean due to the incomplete air-sea equilibration, effectively increasing the efficiency of biological carbon storage in the deep ocean. We develop a simple theory to consider the controls on this effect. The theory predicts a strong coupling between biological carbon sequestration and air-sea disequilibrium expressed as a linear relationship between the biological carbon pump and the degree of supersaturation in the deep ocean. Sensitivity experiments with a three-dimensional ocean biogeochemistry model support this prediction and demonstrate that the disequilibrium pump almost doubles the efficiency of biological carbon sequestration, relative to the effect of nutrient utilization. ©2013. 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/77549
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, GA 30332, United States; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Ito T,, Follows M,J. Air-sea disequilibrium of carbon dioxide enhances the biological carbon sequestration in the Southern Ocean[J]. Global Biogeochemical Cycles,2013-01-01,27(4)