气候变化领域集成服务门户(CCPortal): Paleocene/Eocene carbon feedbacks triggered by volcanic activity

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DOI	10.1038/s41467-021-25536-0
	Paleocene/Eocene carbon feedbacks triggered by volcanic activity
	Kender S.; Bogus K.; Pedersen G.K.; Dybkjær K.; Mather T.A.; Mariani E.; Ridgwell A.; Riding J.B.; Wagner T.; Hesselbo S.P.; Leng M.J.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The Paleocene–Eocene Thermal Maximum (PETM) was a period of geologically-rapid carbon release and global warming ~56 million years ago. Although modelling, outcrop and proxy records suggest volcanic carbon release occurred, it has not yet been possible to identify the PETM trigger, or if multiple reservoirs of carbon were involved. Here we report elevated levels of mercury relative to organic carbon—a proxy for volcanism—directly preceding and within the early PETM from two North Sea sedimentary cores, signifying pulsed volcanism from the North Atlantic Igneous Province likely provided the trigger and subsequently sustained elevated CO2. However, the PETM onset coincides with a mercury low, suggesting at least one other carbon reservoir released significant greenhouse gases in response to initial warming. Our results support the existence of ‘tipping points’ in the Earth system, which can trigger release of additional carbon reservoirs and drive Earth’s climate into a hotter state. © 2021, The Author(s).
语种	英语
scopus关键词	carbon; mercury; carbon dioxide; climate change; Eocene; global warming; outcrop; Paleocene; volcanism; Article; carbon cycle; Eocene; greenhouse effect; greenhouse gas; Paleocene; palynology; phytoplankton; sedimentation rate; sedimentology; volcano; Atlantic Ocean; Atlantic Ocean (North); North Sea
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250629
作者单位	Camborne School of Mines, University of Exeter, Cornwall, United Kingdom; British Geological Survey, Nottingham, United Kingdom; Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark; Department of Earth Sciences, University of Oxford, Oxford, United Kingdom; Department of Earth and Planetary Sciences, University of California at Riverside, Riverside, CA, United States; Lyell Centre, Heriot-Watt University, Edinburgh, United Kingdom; National Environmental Isotope Facility, British Geological Survey, Nottingham, United Kingdom
推荐引用方式 GB/T 7714	Kender S.,Bogus K.,Pedersen G.K.,et al. Paleocene/Eocene carbon feedbacks triggered by volcanic activity[J],2021,12(1).
APA	Kender S..,Bogus K..,Pedersen G.K..,Dybkjær K..,Mather T.A..,...&Leng M.J..(2021).Paleocene/Eocene carbon feedbacks triggered by volcanic activity.Nature Communications,12(1).
MLA	Kender S.,et al."Paleocene/Eocene carbon feedbacks triggered by volcanic activity".Nature Communications 12.1(2021).