气候变化领域集成服务门户(CCPortal): Role of Asian summer monsoon subsystems in the inter-hemispheric progression of deglaciation

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DOI	10.1038/s41561-019-0319-5
	Role of Asian summer monsoon subsystems in the inter-hemispheric progression of deglaciation
	Nilsson-Kerr K.; Anand P.; Sexton P.F.; Leng M.J.; Misra S.; Clemens S.C.; Hammond S.J.
发表日期	2019
ISSN	17520894
卷号	12 期号:4
英文摘要	The responses of Asian monsoon subsystems to both hemispheric climate forcing and external orbital forcing are currently issues of vigorous debate. The Indian summer monsoon is the dominant monsoon subsystem in terms of energy flux, constituting one of Earth’s most dynamic expressions of ocean–atmosphere interactions. Yet, the Indian summer monsoon is grossly under-represented in Asian monsoon palaeoclimate records. Here, we present high-resolution records of Indian summer monsoon-induced rainfall and fluvial runoff recovered in a sediment core from the Bay of Bengal across Termination II, 139–127 thousand years ago, including coupled measurements of the oxygen isotopic composition and Mg/Ca, Mn/Ca, Nd/Ca and U/Ca ratios in surface-ocean-dwelling foraminifera. Our data reveal a millennial-scale transient strengthening of the Asian monsoon that punctuates Termination II associated with an oscillation of the bipolar seesaw. The progression of deglacial warming across Termination II emerges first in the Southern Hemisphere, then the tropics in tandem with Indian summer monsoon strengthening, and finally the Northern Hemisphere. We therefore suggest that the Indian summer monsoon was a conduit for conveying Southern Hemisphere latent heat northwards, thereby promoting subsequent Northern Hemisphere deglaciation. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	atmosphere-ocean coupling; climate forcing; deglaciation; historical record; monsoon; Northern Hemisphere; oxygen isotope; paleoclimate; sediment core; Southern Hemisphere; summer; Bay of Bengal; Indian Ocean; Foraminifera
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/124684
作者单位	School of Environment, Earth and Ecosystem Sciences, Faculty of Science, Technology, Engineering and Mathematics, The Open University, Milton Keynes, United Kingdom; NERC Isotope Geoscience Facilities, British Geological Survey, Nottingham, United Kingdom; Centre for Environmental Geochemistry, School of Biosciences, University of Nottingham, Loughborough, United Kingdom; Centre for Earth Sciences, Indian Institute of Science, Bangalore, India; Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI, United States
推荐引用方式 GB/T 7714	Nilsson-Kerr K.,Anand P.,Sexton P.F.,et al. Role of Asian summer monsoon subsystems in the inter-hemispheric progression of deglaciation[J],2019,12(4).
APA	Nilsson-Kerr K..,Anand P..,Sexton P.F..,Leng M.J..,Misra S..,...&Hammond S.J..(2019).Role of Asian summer monsoon subsystems in the inter-hemispheric progression of deglaciation.Nature Geoscience,12(4).
MLA	Nilsson-Kerr K.,et al."Role of Asian summer monsoon subsystems in the inter-hemispheric progression of deglaciation".Nature Geoscience 12.4(2019).