气候变化领域集成服务门户(CCPortal): Summer warmth of the past six interglacials on Greenland

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DOI	10.1073/pnas.2022916118
	Summer warmth of the past six interglacials on Greenland
	Cluett A.A.; Thomasa E.K.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:20
英文摘要	The relative warmth of mid-to-late Pleistocene interglacials on Greenland has remained unknown, leading to debates about the regional climate forcing that caused past retreat of the Greenland Ice Sheet (GrIS). We analyze the hydrogen isotopic composition of terrestrial biomarkers in Labrador Sea sediments through interglacials of the past 600,000 y to infer millennial-scale summer warmth on southern Greenland. Here, we reconstruct exceptionally warm summers in Marine Isotope Stage (MIS) 5e, concurrent with strong Northern Hemisphere summer insolation. In contrast, "superinterglacial" MIS11 demonstrated only moderate warmth, sustained throughout a prolonged interval of elevated atmospheric carbon dioxide. Strong inferred GrIS retreat during MIS11 relative to MIS5e suggests an indirect relationship between maximum summer temperature and cumulative interglacial mass loss, indicating strong GrIS sensitivity to duration of regional warmth and elevated atmospheric carbon dioxide. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Arctic; Greenland Ice Sheet; Interglacial; Last Interglacial; Marine Isotope Stage 11
语种	英语
scopus关键词	carbon dioxide; Article; chronology; climate; environmental temperature; geographic distribution; Greenland; interglacial; isotope analysis; Northern Hemisphere; sea surface temperature; sediment; summer; vegetation
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238565
作者单位	Department of Geology, State University of New York at Buffalo, Buffalo, NY 14260, United States
推荐引用方式 GB/T 7714	Cluett A.A.,Thomasa E.K.. Summer warmth of the past six interglacials on Greenland[J],2021,118(20).
APA	Cluett A.A.,&Thomasa E.K..(2021).Summer warmth of the past six interglacials on Greenland.Proceedings of the National Academy of Sciences of the United States of America,118(20).
MLA	Cluett A.A.,et al."Summer warmth of the past six interglacials on Greenland".Proceedings of the National Academy of Sciences of the United States of America 118.20(2021).