DOI: 10.1016/j.epsl.2018.03.046
Scopus记录号: 2-s2.0-85045203435
论文题名: The relationship between cadmium and phosphate in the Atlantic Ocean unravelled
作者: Middag R. ; van Heuven S.M.A.C. ; Bruland K.W. ; de Baar H.J.W.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 492 起始页码: 79
结束页码: 88
语种: 英语
英文关键词: Atlantic
; cadmium
; extended optimum multiparameter analysis
; GEOTRACES
; phosphate
Scopus关键词: Cadmium
; Nutrients
; Oceanography
; Phosphates
; Surface waters
; Atlantic
; Deep-water formation
; Driving mechanism
; GEOTRACES
; Multiparameter analysis
; Nutrient elements
; Spatial resolution
; Subsurface waters
; Cadmium compounds
; accuracy assessment
; cadmium
; mineralization
; phosphate
; spatial resolution
; Atlantic Ocean
; Atlantic Ocean (West)
英文摘要: Cadmium (Cd) is not generally considered a nutrient element, but behaves like a nutrient in the oceans and might play an important role in ocean biology after all. The relationship between Cd and the nutrient phosphate (PO4) has been studied for over 40 yrs, but the debate on the driving mechanism and reason behind the ‘kink’, a change in the steepness of the slope is ongoing. Using new data of high accuracy and spatial resolution covering the West-Atlantic Ocean from north to south, in combination with a robust extended optimum multiparameter (eOMP) water mass model, we show that mixing between different water masses is the dominant factor explaining the observed correlation and its kink. Regeneration of Cd via remineralisation explains the smaller scale variability, notably in the surface ocean. Observations imply the availability of Cd in surface waters determines the Cd-uptake and thus the Cd:PO4 remineralisation ratio. This ratio is variable between different ocean regions, notably between the northern and southern high latitude oceans. Due to their role in deep water formation, both the northern and southern high latitude oceans are a driving factor in the Atlantic and global Cd and PO4 relation. Outside the Atlantic Ocean, the classical kink is not expected, but the relationship is by no means linear. Most likely, this is due to the interaction between low latitude surface waters and subsurface waters from high latitude origin, but more data are required to assess this in detail. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109895
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Ocean Systems (OCS), NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, P.O. Box 59, Den Burg, Texel, AB 1790, Netherlands; Department of Ocean Sciences, Institute of Marine Sciences, University of California Santa CruzCA 95064, United States; Department of Chemistry, NIWA, University of Otago Research Centre for Oceanography, Dunedin, 9054, New Zealand
Recommended Citation:
Middag R.,van Heuven S.M.A.C.,Bruland K.W.,et al. The relationship between cadmium and phosphate in the Atlantic Ocean unravelled[J]. Earth and Planetary Science Letters,2018-01-01,492