globalchange  > 气候变化事实与影响
DOI: 10.1002/gbc.20039
Scopus记录号: 2-s2.0-84881096377
论文题名:
Humic substances may control dissolved iron distributions in the global ocean: Implications from numerical simulations
作者: Misumi K; , Lindsay K; , Moore J; K; , Doney S; C; , Tsumune D; , Yoshida Y
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期:2
起始页码: 450
结束页码: 462
语种: 英语
英文关键词: general circulation model ; iron ; organic ligands
Scopus关键词: Apparent oxygen utilizations ; Conventional approach ; Deep ocean water ; General circulation model ; Ligand concentration ; Ocean general circulation models ; Organic ligands ; Simulated distribution ; Dissolution ; Iron ; Ligands ; Residence time distribution ; concentration (composition) ; global ocean ; humic substance ; iron ; ligand ; numerical model ; oceanic general circulation model
英文摘要: This study used an ocean general circulation model to simulate the marine iron cycle in an investigation of how simulated distributions of weak iron-binding ligands would be expected to control dissolved iron concentrations in the ocean, with a particular focus on deep ocean waters. The distribution of apparent oxygen utilization was used as a proxy for humic substances that have recently been hypothesized to account for the bulk of weak iron-binding ligands in seawater. Compared to simulations using a conventional approach with homogeneous ligand distributions, the simulations that incorporated spatially variable ligand concentrations exhibited substantial improvement in the simulation of global dissolved iron distributions as revealed by comparisons with available field data. The improved skill of the simulations resulted largely because the spatially variable ligand distributions led to a more reasonable basin-scale variation of the residence time of iron when present at high concentrations. The model results, in conjunction with evidence from recent field studies, suggest that humic substances play an important role in the iron cycle in the ocean. ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77607
Appears in Collections:气候变化事实与影响

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作者单位: Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko, Chiba 270-1194, Japan; Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, United States; Department of Earth System Science, University of California at Irvine, Irvine, CA, United States; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States

Recommended Citation:
Misumi K,, Lindsay K,, Moore J,et al. Humic substances may control dissolved iron distributions in the global ocean: Implications from numerical simulations[J]. Global Biogeochemical Cycles,2013-01-01,27(2)
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