气候变化领域集成服务门户(CCPortal): Northward Shifts in the Polar Front Preceded Bølling and Holocene Warming in Southwestern Scandinavia

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DOI	10.1029/2020GL088153
	Northward Shifts in the Polar Front Preceded Bølling and Holocene Warming in Southwestern Scandinavia
	Cowling O.C.; Thomas E.K.; Svendsen J.I.; Mangerud J.; Vasskog K.; Haflidason H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	The last deglaciation in northern Europe provides an opportunity to study the hydrologic component of abrupt climate shifts in a region with complex interactions between ice sheets and oceanic and atmospheric circulation. We use leaf wax hydrogen isotopes (δ2H) to reconstruct summer precipitation δ2H and aridity in southwestern Norway from 15.8 to 11.5 ka. We identify transitions to a more proximal moisture source before the ends of Heinrich Stadial 1 and the Younger Dryas, prior to local warming and increased primary productivity in both instances. We infer these changes in moisture delivery to southwestern Norway to be a response to northward shifts in the polar front caused by warm water intrusion into the North Atlantic, which preceded abrupt warming in the circum-North Atlantic. These results suggest that moisture transport pathways shift northward as warm surface ocean water reaches higher latitudes in the North Atlantic. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Moisture; Atmospheric circulation; Higher latitudes; Hydrologic components; Last deglaciation; Moisture sources; Moisture transport; Primary productivity; Summer precipitation; Oceanography; atmospheric circulation; Bolling; climate variation; Heinrich event; Holocene; last deglaciation; oceanic circulation; polar front; precipitation (climatology); Younger Dryas; Atlantic Ocean; Atlantic Ocean (North); Norway; Scandinavia
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170087
作者单位	Department of Geology, University at Buffalo, Buffalo, NY, United States; Department of Earth Science, University of Bergen, Bergen, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; Department of Geography, University of Bergen, Bergen, Norway
推荐引用方式 GB/T 7714	Cowling O.C.,Thomas E.K.,Svendsen J.I.,et al. Northward Shifts in the Polar Front Preceded Bølling and Holocene Warming in Southwestern Scandinavia[J],2020,47(14).
APA	Cowling O.C.,Thomas E.K.,Svendsen J.I.,Mangerud J.,Vasskog K.,&Haflidason H..(2020).Northward Shifts in the Polar Front Preceded Bølling and Holocene Warming in Southwestern Scandinavia.Geophysical Research Letters,47(14).
MLA	Cowling O.C.,et al."Northward Shifts in the Polar Front Preceded Bølling and Holocene Warming in Southwestern Scandinavia".Geophysical Research Letters 47.14(2020).