气候变化领域集成服务门户(CCPortal): Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change

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DOI	10.1038/s41561-021-00818-w
	Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change
	Osman M.B.; Smith B.E.; Trusel L.D.; Das S.B.; McConnell J.R.; Chellman N.; Arienzo M.; Sodemann H.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:10
英文摘要	Ice core archives are well suited for reconstructing rapid past climate changes at high latitudes. Despite this, few records currently exist from coastal Greenlandic ice caps due to their remote nature, limiting our long-term understanding of past maritime and coastal climate variability across this rapidly changing Arctic region. Here, we reconstruct regionally representative glacier surface mass balance and climate variability over the last two thousand years (~169–2015 ce) using an ice core collected from the Nuussuaq Peninsula, west Greenland. We find indications of abrupt regional hydroclimate shifts, including an up to 20% decrease in average snow accumulation during the transition from the Medieval Warm Period (950–1250 ce) to Little Ice Age (1450–1850 ce), followed by a subsequent >40% accumulation increase from the early 18th to late 20th centuries ce. These coastal changes are substantially larger than those previously reported from interior Greenland records. Moreover, we show that the strong relationship observed today between Arctic temperature rise and coastal ice cap decay contrasts with that of the last millennium, during which periods of warming led to snowfall-driven glacial growth. Taken together with modern observations, the ice core evidence could indicate a recent reversal in the response of west Greenland ice caps to climate change. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	glacier; glacier mass balance; ice cap; ice core; Little Ice Age; Medieval Warm Period; snow accumulation; Arctic; Greenland; Nuussuaq
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/250862
作者单位	Massachusetts Institute of Technology/Woods Hole Oceanographic Institution Joint Program in Oceanography/Applied Ocean Sciences and Engineering, Woods Hole, MA, United States; Department of Geosciences, University of Arizona, Tucson, AZ, United States; Applied Physics Laboratory, University of Washington, Seattle, WA, United States; Department of Geography, Pennsylvania State University, University Park, PA, United States; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Division of Hydrologic Sciences, Desert Research Institute, Reno, NV, United States; Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Osman M.B.,Smith B.E.,Trusel L.D.,et al. Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change[J],2021,14(10).
APA	Osman M.B..,Smith B.E..,Trusel L.D..,Das S.B..,McConnell J.R..,...&Sodemann H..(2021).Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change.Nature Geoscience,14(10).
MLA	Osman M.B.,et al."Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change".Nature Geoscience 14.10(2021).