Universität zu Köln

Thienemann, Matthias, Kusch, Stephanie ORCID: 0000-0002-2708-4975, Vogel, Hendrik ORCID: 0000-0002-9902-8120, Ritter, Benedikt, Schefuss, Enno and Rethemeyer, Janet (2019). Neoglacial transition of atmospheric circulation patterns over Fennoscandia recorded in Holocene Lake Tornetrask sediments. Boreas, 48 (2). S. 287 - 299. HOBOKEN: WILEY. ISSN 1502-3885

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Abstract

Atmospheric circulation over the North Atlantic has undergone significant fluctuations during the Holocene. To better constrain these changes and their impacts on the Fennoscandian subarctic, we investigated molecular and inorganic proxies as well as plant wax D/H isotopes (D-C28) in a Holocene sedimentary record from Lake Tornetrask (Sweden). These data indicate a thermal maximum c. 8100 to 6300cal. a BP with reduced soil organic matter input, followed by a long-term cooling trend with increasing soil erosion. D data suggest a stable atmospheric circulation with predominance of westerly flow and North Atlantic moisture sourcing during the Early and Middle Holocene. Asubstantial depletion in D followed by increased flood frequency starting at c. 5300cal. a BP and intensifying c. 1500cal. a BP suggests a reorganization of the atmospheric circulation from zonal towards meridional flow with predominantly Arctic Ocean and Baltic Sea moisture sourcing.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Thienemann, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Kusch, Stephanie UNSPECIFIED orcid.org/0000-0002-2708-4975 UNSPECIFIED Vogel, Hendrik UNSPECIFIED orcid.org/0000-0002-9902-8120 UNSPECIFIED Ritter, Benedikt UNSPECIFIED UNSPECIFIED UNSPECIFIED Schefuss, Enno UNSPECIFIED UNSPECIFIED UNSPECIFIED Rethemeyer, Janet UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-152110
DOI:	10.1111/bor.12365
Journal or Publication Title:	Boreas
Volume:	48
Number:	2
Page Range:	S. 287 - 299
Date:	2019
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1502-3885
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HYDROGEN-ISOTOPIC COMPOSITION; NORTH-ATLANTIC OSCILLATION; ABISKO AREA; SURFACE-TEMPERATURE; CLIMATE-CHANGE; LEAF WAXES; LACUSTRINE CARBONATES; MEAN TEMPERATURE; SWEDISH LAPLAND; OXYGEN ISOTOPES Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15211