气候变化领域集成服务门户(CCPortal): Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation

CCPortal

DOI	10.1038/s41561-022-00910-9
	Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation
	Yu, Jimin; Oppo, Delia W.; Jin, Zhangdong; Lacerra, Matthew; Ji, Xuan; Umling, Natalie E.; Lund, David C.; McCave, Nick; Menviel, Laurie; Shao, Jun; Xu, Chen
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	293
结束页码	+
卷号	15 期号:4 页码:24
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.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000770187800001
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/272531
作者单位	Laoshan Laboratory; Australian National University; Woods Hole Oceanographic Institution; Chinese Academy of Sciences; Institute of Earth Environment, CAS; Princeton University; American Museum of Natural History (AMNH); University of Connecticut; University of Cambridge; University of New South Wales Sydney; University of Southern California
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],2022,15(4):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,15(4),24.
MLA	Yu, Jimin,et al."Millennial and centennial CO2 release from the Southern Ocean during the last deglaciation".NATURE GEOSCIENCE 15.4(2022):24.