气候变化领域集成服务门户(CCPortal): Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans

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DOI	10.1016/j.epsl.2020.116649
	Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
	Shuttleworth R.; Bostock H.C.; Chalk T.B.; Calvo E.; Jaccard S.L.; Pelejero C.; Martínez-García A.; Foster G.L.
发表日期	2021
ISSN	0012821X
卷号	554
英文摘要	Over the last deglaciation there were two transient intervals of pronounced atmospheric CO2 rise; Heinrich Stadial 1 (17.5-15 kyr) and the Younger Dryas (12.9-11.5 kyr). Leading hypotheses accounting for the increased accumulation of CO2 in the atmosphere at these times invoke deep ocean carbon being released from the Southern Ocean and an associated decline in the global efficiency of the biological carbon pump. Here we present new deglacial surface seawater pH and CO2sw records from the Sub-Antarctic regions of the Atlantic and Pacific oceans using boron isotopes measured on the planktic foraminifera Globigerina bulloides. These new data support the hypothesis that upwelling of carbon-rich water in the Sub-Antarctic occurred during Heinrich Stadial 1, and contributed to the initial increase in atmospheric CO2. The increase in CO2sw is coeval with a decline in biological productivity at both the Sub-Antarctic Atlantic and Pacific sites. However, there is no evidence for a significant outgassing of deep ocean carbon from the Sub-Antarctic during the rest of the deglacial, including the second period of atmospheric CO2 rise coeval with the Younger Dryas. This suggests that the second rapid increase in atmospheric CO2 is driven by processes operating elsewhere in the Southern Ocean, or another region. © 2020 Elsevier B.V.
关键词	boron isotopes CO2 flux deglaciation Heinrich Stadial 1 Southern Ocean Sub-Antarctic
英文关键词	Carbon; Oceanography; Antarctic regions; Biological productivity; Boron isotopes; Global efficiency; Last deglaciation; Planktic foraminifera; Southern ocean; Surface seawater; Carbon dioxide; boron isotope; carbon flux; Heinrich event; last deglaciation; pH; planktonic foraminifera; seawater; upwelling; Antarctica; Atlantic Ocean; Pacific Ocean; Southern Ocean; Foraminifera; Globigerina bulloides
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203294
作者单位	School of Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, Waterfront Campus, European Way, Southampton, SO14 3ZH, United Kingdom; School of Earth and Environmental Science, University of Queensland, Brisbane, Queensland, Australia; National Institute of Water and Atmosphere, Wellington, New Zealand; Institut de Ciències del Mar, ICM, CSIC, Barcelona, Catalonia, Spain; Institute of Geological Sciences, Oeschger Center for Climate Change Research, University of Bern, Bern, 3012, Switzerland; Institute of Earth Sciences, University of Lausanne, Lausanne, 1015, Switzerland; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain; Max-Planck-Institut für Chemie, Otto-Hahn-Institut, Hahn-Meitner-Weg 1, Mainz, 55128, Germany
推荐引用方式 GB/T 7714	Shuttleworth R.,Bostock H.C.,Chalk T.B.,et al. Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans[J],2021,554.
APA	Shuttleworth R..,Bostock H.C..,Chalk T.B..,Calvo E..,Jaccard S.L..,...&Foster G.L..(2021).Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans.Earth and Planetary Science Letters,554.
MLA	Shuttleworth R.,et al."Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans".Earth and Planetary Science Letters 554(2021).