气候变化领域集成服务门户(CCPortal): Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake

CCPortal

DOI	10.1038/s41561-021-00774-5
	Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake
	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.
发表日期	2021
ISSN	17520894
起始页码	571
结束页码	577
卷号	14 期号:8
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.
英文关键词	air-sea interaction; carbon dioxide; human activity; hydrography; meridional circulation; overturn; quantitative analysis
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206869
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
推荐引用方式 GB/T 7714	Brown P.J.,McDonagh E.L.,Sanders R.,et al. Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake[J],2021,14(8).
APA	Brown P.J..,McDonagh E.L..,Sanders R..,Watson A.J..,Wanninkhof R..,...&Messias M.-J..(2021).Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake.Nature Geoscience,14(8).
MLA	Brown P.J.,et al."Circulation-driven variability of Atlantic anthropogenic carbon transports and uptake".Nature Geoscience 14.8(2021).