Universität zu Köln

Winterfeld, Maria, Mollenhauer, Gesine ORCID: 0000-0001-5138-564X, Dummann, Wolf ORCID: 0000-0001-6054-2440, Koehler, Peter, Lembke-Jene, Lester ORCID: 0000-0002-6873-8533, Meyer, Vera D., Hefter, Jens ORCID: 0000-0002-5823-1966, McIntyre, Cameron, Wacker, Lukas, Kokfelt, Ulla and Tiedemann, Ralf (2018). Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost. Nat. Commun., 9. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

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Abstract

The mobilization of glacial permafrost carbon during the last glacial-interglacial transition has been suggested by indirect evidence to be an additional and significant source of greenhouse gases to the atmosphere, especially at times of rapid sea-level rise. Here we present the first direct evidence for the release of ancient carbon from degrading permafrost in East Asia during the last 17 kyrs, using biomarkers and radiocarbon dating of terrigenous material found in two sediment cores from the Okhotsk Sea. Upscaling our results to the whole Arctic shelf area, we show by carbon cycle simulations that deglacial permafrost-carbon release through sea-level rise likely contributed significantly to the changes in atmospheric CO2 around 14.6 and 11.5 kyrs BP.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Winterfeld, Maria UNSPECIFIED UNSPECIFIED UNSPECIFIED Mollenhauer, Gesine UNSPECIFIED orcid.org/0000-0001-5138-564X UNSPECIFIED Dummann, Wolf UNSPECIFIED orcid.org/0000-0001-6054-2440 UNSPECIFIED Koehler, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Lembke-Jene, Lester UNSPECIFIED orcid.org/0000-0002-6873-8533 UNSPECIFIED Meyer, Vera D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hefter, Jens UNSPECIFIED orcid.org/0000-0002-5823-1966 UNSPECIFIED McIntyre, Cameron UNSPECIFIED UNSPECIFIED UNSPECIFIED Wacker, Lukas UNSPECIFIED UNSPECIFIED UNSPECIFIED Kokfelt, Ulla UNSPECIFIED UNSPECIFIED UNSPECIFIED Tiedemann, Ralf UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-173060
DOI:	10.1038/s41467-018-06080-w
Journal or Publication Title:	Nat. Commun.
Volume:	9
Date:	2018
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2041-1723
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Geosciences > Institute of Geology and Mineralog
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTERMEDIATE WATER VENTILATION; OKHOTSK SEA; CALIBRATION CURVES; TETRAETHER LIPIDS; METHANE EMISSIONS; ATMOSPHERIC CH4; HIGH-RESOLUTION; SOUTHERN-OCEAN; LAST; CO2 Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17306