DOI: 10.1002/2017GB005663
Scopus记录号: 2-s2.0-85033474207
论文题名: On the Role of Dust-Deposited Lithogenic Particles for Iron Cycling in the Tropical and Subtropical Atlantic
作者: Ye Y ; , Völker C
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2017
卷: 31, 期: 10 起始页码: 1543
结束页码: 1558
语种: 英语
英文关键词: dust particles
; iron
; scavenging
; tropical and subtropical Atlantic
Scopus关键词: aggregation
; biogeochemistry
; concentration (composition)
; dissolved matter
; dust
; iron
; lithosphere
; particle size
; scavenging (chemistry)
; source-sink dynamics
; trace element
; Atlantic Ocean
; Atlantic Ocean (Subtropical)
; Atlantic Ocean (Tropical)
英文摘要: Lithogenic material deposited as dust is one of the major sources of trace metals to the ocean, particularly in the tropical and subtropical Atlantic. On the other hand, it can also act as a scavenging surface for iron. Here we studied this double role of lithogenic material in the marine iron cycle by adding a new scheme for describing particle dynamics into a global biogeochemistry and ecosystem model including particle aggregation and disaggregation of two particle size classes and scavenging on both organic and lithogenic particles. Considering the additional scavenging of iron on lithogenic particles, the modeled dissolved iron concentration is reduced significantly in the tropical and subtropical Atlantic, bringing the model much closer to observations. This underlines the necessity to consider the double role of dust particles as iron source and sink in studies on the marine iron cycle in high dust regions and with changing dust fluxes. ©2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77695
Appears in Collections: 气候变化事实与影响
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作者单位: Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany
Recommended Citation:
Ye Y,, Völker C. On the Role of Dust-Deposited Lithogenic Particles for Iron Cycling in the Tropical and Subtropical Atlantic[J]. Global Biogeochemical Cycles,2017-01-01,31(10)