Universität zu Köln

Briner, Jason P., McKay, Nicholas P., Axford, Yarrow ORCID: 0000-0002-8033-358X, Bennike, Ole ORCID: 0000-0002-5486-9946, Bradley, Raymond S., de Vernal, Anne, Fisher, David, Francus, Pierre ORCID: 0000-0001-5465-1966, Frechette, Bianca ORCID: 0000-0002-4986-5772, Gajewski, Konrad, Jennings, Anne, Kaufman, Darrell S., Miller, Gifford, Rouston, Cody and Wagner, Bernd ORCID: 0000-0002-1369-7893 (2016). Holocene climate change in Arctic Canada and Greenland. Quat. Sci. Rev., 147. S. 340 - 365. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0277-3791

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Abstract

This synthesis paper summarizes published proxy climate evidence showing the spatial and temporal pattern of climate change through the Holocene in Arctic Canada and Greenland. Our synthesis includes 47 records from a recently published database of highly resolved Holocene paleoclimate time series from the Arctic (Sundqvist et al., 2014). We analyze the temperature histories represented by the database and compare them with paleoclimate and environmental information from 54 additional published records, mostly from datasets that did not fit the selection criteria for the Arctic Holocene database. Combined, we review evidence from a variety of proxy archives including glaciers (ice cores and glacial geomorphology), lake sediments, peat sequences, and coastal and deep-marine sediments. The temperature-sensitive records indicate more consistent and earlier Holocene warmth in the north and east, and a more diffuse and later Holocene thermal maximum in the south and west. Principal components analysis reveals two dominant Holocene trends, one with early Holocene warmth followed by cooling in the middle Holocene, the other with a broader period of warmth in the middle Holocene followed by cooling in the late Holocene. The temperature decrease from the warmest to the coolest portions of the Holocene is 3.0 +/- 1.0 degrees C on average (n = 11 sites). The Greenland Ice Sheet retracted to its minimum extent between 5 and 3 ka, consistent with many sites from around Greenland depicting a switch from warm to cool conditions around that time. The spatial pattern of temperature change through the Holocene was likely driven by the decrease in northern latitude summer insolation through the Holocene, the varied influence of waning ice sheets in the early Holocene, and the variable influx of Atlantic Water into the study region. (C) 2016 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Briner, Jason P. UNSPECIFIED UNSPECIFIED UNSPECIFIED McKay, Nicholas P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Axford, Yarrow UNSPECIFIED orcid.org/0000-0002-8033-358X UNSPECIFIED Bennike, Ole UNSPECIFIED orcid.org/0000-0002-5486-9946 UNSPECIFIED Bradley, Raymond S. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Vernal, Anne UNSPECIFIED UNSPECIFIED UNSPECIFIED Fisher, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Francus, Pierre UNSPECIFIED orcid.org/0000-0001-5465-1966 UNSPECIFIED Frechette, Bianca UNSPECIFIED orcid.org/0000-0002-4986-5772 UNSPECIFIED Gajewski, Konrad UNSPECIFIED UNSPECIFIED UNSPECIFIED Jennings, Anne UNSPECIFIED UNSPECIFIED UNSPECIFIED Kaufman, Darrell S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Miller, Gifford UNSPECIFIED UNSPECIFIED UNSPECIFIED Rouston, Cody UNSPECIFIED UNSPECIFIED UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-265120
DOI:	10.1016/j.quascirev.2016.02.010
Journal or Publication Title:	Quat. Sci. Rev.
Volume:	147
Page Range:	S. 340 - 365
Date:	2016
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	0277-3791
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NORTHEASTERN BAFFIN-ISLAND; QUEEN ELIZABETH ISLANDS; LATE QUATERNARY HISTORY; SEA-SURFACE CONDITIONS; ICE-SHEET HISTORY; EAST GREENLAND; WEST GREENLAND; NORTH-ATLANTIC; DISKO-BUGT; SOUTHERN GREENLAND Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26512