DOI: 10.1038/s41561-021-00774-5
论文题名: Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake
作者: Brown P.J. ; McDonagh E.L. ; Sanders R. ; Watson A.J. ; Wanninkhof R. ; King B.A. ; Smeed D.A. ; Baringer M.O. ; Meinen C.S. ; Schuster U. ; Yool A. ; Messias M.-J.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2021
卷: 14, 期: 8 起始页码: 571
结束页码: 577
语种: 英语
英文关键词: air-sea interaction
; carbon dioxide
; human activity
; hydrography
; meridional circulation
; overturn
; quantitative analysis
英文摘要: The ocean absorbs approximately a quarter of the carbon dioxide currently released to the atmosphere by human activities (Canth). A disproportionately large fraction accumulates in the North Atlantic due to the combined effects of transport by the Atlantic Meridional Overturning Circulation (AMOC) and air–sea exchange. However, discrepancies exist between modelled and observed estimates of the air–sea exchange due to unresolved ocean transport variability. Here we quantify the strength and variability of Canth transports across 26.5° N in the North Atlantic between 2004 and 2012 using circulation measurements from the RAPID mooring array and hydrographic observations. Over this period, decreasing circulation strength tended to decrease northward Canth transport, while increasing Canth concentrations (preferentially in the upper limb of the overturning circulation) tended to increase northward Canth transport. These two processes compensated each other over the 8.5-year period. While ocean transport and air–sea Canth fluxes are approximately equal in magnitude, the increasing accumulation rate of Canth in the North Atlantic combined with a stable ocean transport supply means we infer a growing contribution from air–sea Canth fluxes over the period. North Atlantic Canth accumulation is thus sensitive to AMOC strength, but growing atmospheric Canth uptake continues to significantly impact Canth transports. © 2021, The Author(s), under exclusive licence to Springer Nature Limited. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169725
Appears in Collections: 气候变化与战略
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作者单位: National Oceanography Centre, Southampton, United Kingdom; NORCE, Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway; College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; NOAA, Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States
Recommended Citation:
Brown P.J.,McDonagh E.L.,Sanders R.,et al. Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake[J]. Nature Geoscience,2021-01-01,14(8)