DOI: 10.1002/2013GL059059
论文题名: The impact of different external sources of iron on the global carbon cycle
作者: Tagliabue A. ; Aumont O. ; Bopp L.
刊名: Geophysical Research Letters
ISSN: 0094-10408
EISSN: 1944-10139
出版年: 2014
卷: 41, 期: 3 起始页码: 920
结束页码: 926
语种: 英语
英文关键词: biogeochemistry
; carbon
; iron
; ocean
; phytoplankton
Scopus关键词: Atmospheric CO
; External sources
; Global carbon cycle
; Iron binding
; Low latitudes
; Model simulation
; ocean
; Southern ocean
; Biogeochemistry
; Carbon
; Carbon dioxide
; Computer simulation
; Dust
; Oceanography
; Phytoplankton
; Silicon
; Iron
; biogeochemistry
; carbon cycle
; carbon dioxide
; dust
; hydrothermal activity
; iron
; numerical model
; phytoplankton
英文摘要: Variable supply of iron to the ocean is often invoked to explain part of past changes in atmospheric CO2 (CO2atm). Using model simulations, we find that CO2atm is sensitive on the order of 15, 2, and 1 ppm to sedimentary, dust, and hydrothermal iron input. CO2atm is insensitive to dust because it is not the major iron input to the Southern Ocean. Modifications to the relative export of Si(OH)4 to low latitudes are opposite to those predicted previously. Although hydrothermalism is the major control on the iron inventory in ∼25% of the ocean, it remains restricted to the deep ocean, with minor effects on CO2atm. Nevertheless, uncertainties regarding the iron-binding ligand pool can have significant impacts on CO2atm. Ongoing expansion of iron observations as part of GEOTRACES will be invaluable in refining these results. Key Points Atmospheric CO2 is relatively insensitive to changes to dust supply of iron Hydrothermal Fe is key to the iron inventory, but has a small effect on CO2 There are unexpected changes to Si cycling due to changes in Fe input ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896754985&doi=10.1002%2f2013GL059059&partnerID=40&md5=0b28ad8be83fa6faee760203ee7209a5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7672
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Ocean and Ecological Sciences, School of Environmental Sciences, University of Liverpool, Liverpool, United Kingdom
Recommended Citation:
Tagliabue A.,Aumont O.,Bopp L.. The impact of different external sources of iron on the global carbon cycle[J]. Geophysical Research Letters,2014-01-01,41(3).