Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation

doi:10.1038/s41561-022-00910-9

	Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation
	Yu, Jimin 9,10; Oppo, Delia W.8; Jin, Zhangdong 7; Lacerra, Matthew 6; Ji, Xuan 9; Umling, Natalie E.5; Lund, David C.4; McCave, Nick 3; Menviel, Laurie 2; Shao, Jun 1
刊名	NATURE GEOSCIENCE
	2022-03-17
页码	24
ISSN号	1752-0894
DOI	10.1038/s41561-022-00910-9
通讯作者	Yu, Jimin(jimin.yu@anu.edu.au)
英文摘要	For its greenhouse effects, atmospheric CO2 can critically influence the global climate on millennial and centennial timescales. Pleistocene atmospheric CO2 variations must involve changes in ocean storage of carbon, but the mechanisms and pathways of carbon transfer between the oceanic and atmospheric reservoirs are poorly understood due, in part, to complications associated with interpretation of carbonate system proxy data. Here we employ a recently developed approach to reconstruct upper Atlantic air-sea CO2 exchange signatures through the last deglaciation. Using this approach, proxy and model data each suggest that there was a net release of CO2 via the Atlantic sector of the Southern Ocean during the early deglaciation, which probably contributed to the millennial-scale atmospheric CO2 rise during Heinrich Stadial 1 at similar to 18.0-14.7 kyr ago. Moreover, our data reveal a previously unrecognized mechanism for the centennial-scale atmospheric CO2 rise at the onset of the Bolling warming event around 14.7 kyr ago, namely, the expansion of Antarctic Intermediate Water, a water mass that is especially inefficient at sequestering atmospheric CO2. Our findings highlight the role of the Southern Ocean outgassing and intermediate water-mass production and volume variations in governing millennial- and centennial-timescale atmospheric CO2 rises during the last deglaciation.
资助项目	NSFC[42076056] ; NSFC[41991322] ; ARC[DP190100894] ; ARC[FT140100993] ; ARC[FT180100606]
WOS关键词	GLOBAL OVERTURNING CIRCULATION ; ANTARCTIC INTERMEDIATE WATER ; MID-DEPTH ATLANTIC ; NORTH-ATLANTIC ; GLACIAL MAXIMUM ; CARBON-DIOXIDE ; DEEP-SEA ; ATMOSPHERIC CO2 ; CACO3 PRESERVATION ; ICE
WOS研究方向	Geology
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000770187800001
资助机构	NSFC ; ARC
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17601]
专题	地球环境研究所_生态环境研究室
通讯作者	Yu, Jimin
作者单位	1.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA 90007 USA 2.Univ New South Wales, Climate Change Res Ctr, Earth & Sustainabil Sci Res Ctr, Sydney, NSW, Australia 3.Univ Cambridge, Dept Earth Sci, Cambridge, England 4.Univ Connecticut, Dept Marine Sci, Groton, CT 06340 USA 5.Amer Museum Nat Hist, Dept Earth & Planetary Sci, New York, NY 10024 USA 6.Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA 7.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Peoples R China 8.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA 9.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia 10.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Yu, Jimin,Oppo, Delia W.,Jin, Zhangdong,et al. Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation[J]. NATURE GEOSCIENCE,2022:24.
APA	Yu, Jimin.,Oppo, Delia W..,Jin, Zhangdong.,Lacerra, Matthew.,Ji, Xuan.,...&Xu, Chen.(2022).Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation.NATURE GEOSCIENCE,24.
MLA	Yu, Jimin,et al."Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation".NATURE GEOSCIENCE (2022):24.