气候变化领域集成服务门户(CCPortal): Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse

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DOI	10.1038/s41561-021-00851-9
	Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse
	Wassenburg J.A.; Vonhof H.B.; Cheng H.; Martínez-García A.; Ebner P.-R.; Li X.; Zhang H.; Sha L.; Tian Y.; Edwards R.L.; Fiebig J.; Haug G.H.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:12
英文摘要	During glacial terminations, massive iceberg discharges and meltwater pulses in the North Atlantic triggered a shutdown of the Atlantic Meridional Overturning Circulation (AMOC). Speleothem calcium carbonate oxygen isotope records (δ18OCc) indicate that the collapse of the AMOC caused dramatic changes in the distribution and variability of the East Asian and Indian monsoon rainfall. However, the mechanisms linking changes in the intensity of the AMOC and Asian monsoon δ18OCc are not fully understood. Part of the challenge arises from the fact that speleothem δ18OCc depends on not only the δ18O of precipitation but also temperature and kinetic isotope effects. Here we quantitatively deconvolve these parameters affecting δ18OCc by applying three geochemical techniques in speleothems covering the penultimate glacial termination. Our data suggest that the weakening of the AMOC during meltwater pulse 2A caused substantial cooling in East Asia and a shortening of the summer monsoon season, whereas the collapse of the AMOC during meltwater pulse 2B (133,000 years ago) also caused a dramatic decrease in the intensity of the Indian summer monsoon. These results reveal that the different modes of the AMOC produced distinct impacts on the monsoon system. © 2021, The Author(s).
语种	英语
scopus关键词	calcium carbonate; collapse; deglaciation; iceberg; meltwater; monsoon; oceanic circulation; oxygen isotope; paleoclimate; seasonal variation; speleothem; Atlantic Ocean; Atlantic Ocean (North); Far East
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/250831
作者单位	Climate Geochemistry Department, Max Planck Institute for Chemistry, Mainz, Germany; Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China; Key laboratory of Karst Dynamics, MLR, Institute of Karst Geology, CAGS, Guilin, China; Department of Earth and Environmental Sciences, University of Minnesota, Tate Hall, Minneapolis, MN, United States; Institute of Geosciences, Goethe University, Frankfurt, Germany; Department of Earth Sciences, ETH Zürich, Zürich, Switzerland; Center for Climate Physics, Institute for Basic Science, Busan, South Korea; Pusan National University, Busan, South Korea
推荐引用方式 GB/T 7714	Wassenburg J.A.,Vonhof H.B.,Cheng H.,et al. Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse[J],2021,14(12).
APA	Wassenburg J.A..,Vonhof H.B..,Cheng H..,Martínez-García A..,Ebner P.-R..,...&Haug G.H..(2021).Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse.Nature Geoscience,14(12).
MLA	Wassenburg J.A.,et al."Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse".Nature Geoscience 14.12(2021).