DOI: 10.1002/2016GB005473
Scopus记录号: 2-s2.0-85014503309
论文题名: A global ocean climatology of preindustrial and modern ocean δ13C
作者: Eide M ; , Olsen A ; , Ninnemann U ; S ; , Johannessen T
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2017
卷: 31, 期: 3 起始页码: 515
结束页码: 534
语种: 英语
英文关键词: C-13 climatology
; preindustrial C-13
Scopus关键词: carbon isotope
; climatology
; data set
; dissolved inorganic carbon
; global ocean
; marine sediment
; multiple regression
; phosphate
; spatial distribution
; temporal record
; tracer
; Atlantic Ocean
; Atlantic Ocean (North)
; Southern Ocean
英文摘要: We present a global ocean climatology of dissolved inorganic carbon δ13C (‰) corrected for the 13C-Suess effect, preindustrial δ13C. This was constructed by first using Olsen and Ninnemann's (2010) back-calculation method on data from 25 World Ocean Circulation Experiment cruises to reconstruct the preindustrial δ13C on sections spanning all major oceans. Next, we developed five multilinear regression equations, one for each major ocean basin, which were applied on the World Ocean Atlas data to construct the climatology. This reveals the natural δ13C distribution in the global ocean. Compared to the modern distribution, the preindustrial δ13C spans a larger range of values. The maxima, of up to 1.8‰, occurs in the subtropical gyres of all basins, in the upper and intermediate waters of the North Atlantic, as well as in mode waters with a Southern Ocean origin. Particularly strong gradients occur at intermediate depths, revealing a strong potential for using δ13C as a tracer for changes in water mass geometry at these levels. Further, we identify a much tighter relationship between δ13C and apparent oxygen utilization (AOU) than between δ13C and phosphate. This arises because, in contrast to phosphate, AOU and δ13C are both partly reset when waters are ventilated in the Southern Ocean and underscore that δ13C is a highly robust proxy for past changes in ocean oxygen content and ocean ventilation. Our global preindustrial δ13C climatology is openly accessible and can be used, for example, for improved model evaluation and interpretation of sediment δ13C records. ©2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77763
Appears in Collections: 气候变化事实与影响
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作者单位: Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway; Department of Earth Science, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway; Uni Climate, Uni Research, Bergen, Norway
Recommended Citation:
Eide M,, Olsen A,, Ninnemann U,et al. A global ocean climatology of preindustrial and modern ocean δ13C[J]. Global Biogeochemical Cycles,2017-01-01,31(3)