Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL083319 |
Ligand Binding Strength Explains the Distribution of Iron in the North Atlantic Ocean | |
Pham, Anh L. D.; Ito, Takamitsu | |
2019-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:13页码:7500-7508 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Observations of dissolved iron (dFe) in the subtropical North Atlantic revealed remarkable features: While the near-surface dFe concentration is low despite receiving high dust deposition, the subsurface dFe concentration is high. We test several hypotheses that might explain this feature in an ocean biogeochemistry model with a refined Fe cycling scheme. These hypotheses invoke a stronger lithogenic scavenging rate, rapid biological uptake, and a weaker binding between Fe and a ubiquitous, refractory ligand. While the standard model overestimates the surface dFe concentration, a 10-time stronger biological uptake run causes a slight reduction in the model surface dFe. A tenfold decrease in the binding strength of the refractory ligand, suggested by recent observations, starts reproducing the observed dFe pattern, with a potential impact for the global nutrient distribution. An extreme value for the lithogenic scavenging rate can also match the model dFe with observations, but this process is still poorly constrained. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000476960100050 |
WOS关键词 | DISSOLVED IRON ; ORGANIC COMPLEXATION ; MODEL ; PHYTOPLANKTON ; PACIFIC |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185069 |
专题 | 气候变化 |
作者单位 | Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA |
推荐引用方式 GB/T 7714 | Pham, Anh L. D.,Ito, Takamitsu. Ligand Binding Strength Explains the Distribution of Iron in the North Atlantic Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(13):7500-7508. |
APA | Pham, Anh L. D.,&Ito, Takamitsu.(2019).Ligand Binding Strength Explains the Distribution of Iron in the North Atlantic Ocean.GEOPHYSICAL RESEARCH LETTERS,46(13),7500-7508. |
MLA | Pham, Anh L. D.,et al."Ligand Binding Strength Explains the Distribution of Iron in the North Atlantic Ocean".GEOPHYSICAL RESEARCH LETTERS 46.13(2019):7500-7508. |
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