Radiocarbon evidence for the stability of polar ocean overturning during the Holocene

doi:10.1038/s41561-023-01214-2

	Radiocarbon evidence for the stability of polar ocean overturning during the Holocene
	Chen, Tianyu 1,2,3; Robinson, Laura F.1; Li, Tao 4; Burke, Andrea 5; Zhang, Xu 6; Stewart, Joseph A.1; White, Nicky J.7; Knowles, Timothy D. J.8
刊名	NATURE GEOSCIENCE
	2023-06-26
页码	8
ISSN号	1752-0894
DOI	10.1038/s41561-023-01214-2
通讯作者	Chen, Tianyu(tianyuchen@nju.edu.cn)
英文摘要	Proxy-based studies have linked the pre-industrial atmospheric pCO(2) rise of similar to 20 ppmv in the mid-to late Holocene to an inferred increase in the Southern Ocean overturning and associated biogeochemical changes. However, the history of polar ocean overturning and ventilation through the Holocene remains poorly constrained, leaving important gaps in the assessment of the feedbacks between changes in ocean circulation and the carbon cycle in a warm climate state. The deep-ocean radiocarbon content, which provides a measure of ventilation, responds to circulation changes on centennial to millennial time scales. Here we present absolutely dated deep-sea coral radiocarbon records from the Drake Passage, between South America and Antarctica, and Reykjanes Ridge, south of Iceland, over the Holocene. Our data suggest that ventilation in the Antarctic circumpolar waters and North Atlantic Deep Water is surprisingly invariant within proxy uncertainties at our sampling resolution. Our findings indicate that long-term, large-scale polar ocean overturning has not been disturbed to a level resolvable by radiocarbon and is probably not responsible for the millennial atmosphere p(CO2) evolution through the Holocene. Instead, continuous nutrient and carbon redistribution within the water column following deglaciation, as well as changes in land organic carbon stock, might have regulated atmospheric CO2 budget during this period.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40010200] ; Fundamental Research Funds for the Central Universities[020614380116] ; National Natural Science Foundation of China[41991325] ; National Natural Science Foundation of China[41822603] ; National Natural Science Foundation of China[42021001] ; Natural Environment Research Council[NE/S001743/1] ; Natural Environment Research Council[NE/R005117/1] ; Natural Environment Research Council[NE/N003861/1] ; Natural Environment Research Council[NE/X00127X/1]
WOS关键词	HEMISPHERE WESTERLY WINDS ; NORTH-ATLANTIC ; SOUTHERN-OCEAN ; DEEP-SEA ; ATMOSPHERIC CO2 ; WATER ; VARIABILITY ; CARBON ; CIRCULATION ; DEPTH
WOS研究方向	Geology
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:001020352200001
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Natural Environment Research Council
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/42503]
专题	中国科学院南京地质古生物研究所
通讯作者	Chen, Tianyu
作者单位	1.Univ Bristol, Sch Earth Sci, Bristol, England 2.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China 3.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing, Peoples R China 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China 5.Univ St Andrews, Sch Earth & Environm Sci, St Andrews, Scotland 6.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resources, Grp Alpine Paleoecol & Human Adaptat ALPHA, Beijing, Peoples R China 7.Univ Cambridge, Dept Earth Sci, Bullard Labs, Cambridge, England 8.Univ Bristol, Sch Chem, Bristol, England
推荐引用方式 GB/T 7714	Chen, Tianyu,Robinson, Laura F.,Li, Tao,et al. Radiocarbon evidence for the stability of polar ocean overturning during the Holocene[J]. NATURE GEOSCIENCE,2023:8.
APA	Chen, Tianyu.,Robinson, Laura F..,Li, Tao.,Burke, Andrea.,Zhang, Xu.,...&Knowles, Timothy D. J..(2023).Radiocarbon evidence for the stability of polar ocean overturning during the Holocene.NATURE GEOSCIENCE,8.
MLA	Chen, Tianyu,et al."Radiocarbon evidence for the stability of polar ocean overturning during the Holocene".NATURE GEOSCIENCE (2023):8.