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DOI	10.1016/j.quascirev.2019.07.042
	Was Common Era glacier expansion in the Arctic Atlantic region triggered by unforced atmospheric cooling?
	van der Bilt W.G.M.; Born A.; Haaga K.A.
发表日期	2019
ISSN	0277-3791
卷号	222
英文摘要	The timing and causes of Common Era (CE) glacier growth in the Arctic Atlantic region remain elusive. There is mounting evidence of advances that predate the Little Ice Age (1250–1850 CE); this challenges the view that 13th century volcanic eruptions triggered change by spurring sea-ice expansion. Recent climate model simulations indicate this response does not require external forcing under contemporaneous (Pre-Industrial) boundary conditions. Here, we try to reconcile these new insights by combining regional proxy evidence of glacier and sea-ice change with a climate model experiment. Collated recently published reconstructions demonstrate that regional climate shifted towards a colder mean state around 650–950 CE, a period marked by low radiative forcing. Unforced model simulations reproduce the time-transgressive evolution of this response, which emerged east of Greenland and progressed towards Svalbard. The inferred pattern is associated with sea-ice feedbacks, triggered by stochastic atmospheric cooling. We argue that this mechanism may explain the timing and pattern of CE glacier growth in the region. © 2019 The Authors
英文关键词	Late Holocene; Little Ice Age; Neoglacial; Sea-ice feedbacks; Threshold response
语种	英语
scopus关键词	Atmospheric radiation; Climate change; Expansion; Glacial geology; Sea ice; Stochastic systems; Volcanoes; Atmospheric cooling; Climate model simulations; Late Holocene; Little Ice Age; Neoglacial; Radiative forcings; Threshold response; Volcanic eruptions; Climate models; climate feedback; cooling; glacier dynamics; Little Ice Age; Neoglacial; reconstruction; sea ice; transgression-regression cycle; volcanic eruption; Arctic; Greenland; Svalbard; Svalbard and Jan Mayen
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151766
作者单位	Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5007, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; K.G. Jebsen Centre for Deep Sea Research, Bergen, Norway
推荐引用方式 GB/T 7714	van der Bilt W.G.M.,Born A.,Haaga K.A.. Was Common Era glacier expansion in the Arctic Atlantic region triggered by unforced atmospheric cooling?[J],2019,222.
APA	van der Bilt W.G.M.,Born A.,&Haaga K.A..(2019).Was Common Era glacier expansion in the Arctic Atlantic region triggered by unforced atmospheric cooling?.Quaternary Science Reviews,222.
MLA	van der Bilt W.G.M.,et al."Was Common Era glacier expansion in the Arctic Atlantic region triggered by unforced atmospheric cooling?".Quaternary Science Reviews 222(2019).