Universität zu Köln

Weber, Michael E., Clark, Peter U., Ricken, Werner, Mitrovica, Jerry X., Hostetler, Steven W. and Kuhn, Gerhard ORCID: 0000-0001-6069-7485 (2011). Interhemispheric Ice-Sheet Synchronicity During the Last Glacial Maximum. Science, 334 (6060). S. 1265 - 1270. WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 1095-9203

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Abstract

The timing of the last maximum extent of the Antarctic ice sheets relative to those in the Northern Hemisphere remains poorly understood. We develop a chronology for the Weddell Sea sector of the East Antarctic Ice Sheet that, combined with ages from other Antarctic ice-sheet sectors, indicates that the advance to and retreat from their maximum extent was within dating uncertainties synchronous with most sectors of Northern Hemisphere ice sheets. Surface climate forcing of Antarctic mass balance would probably cause an opposite response, whereby a warming climate would increase accumulation but not surface melting. Our new data support teleconnections involving sea-level forcing from Northern Hemisphere ice sheets and changes in North Atlantic deep-water formation and attendant heat flux to Antarctic grounding lines to synchronize the hemispheric ice sheets.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Weber, Michael E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clark, Peter U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ricken, Werner UNSPECIFIED UNSPECIFIED UNSPECIFIED Mitrovica, Jerry X. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hostetler, Steven W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuhn, Gerhard UNSPECIFIED orcid.org/0000-0001-6069-7485 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-483652
DOI:	10.1126/science.1209299
Journal or Publication Title:	Science
Volume:	334
Number:	6060
Page Range:	S. 1265 - 1270
Date:	2011
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication:	WASHINGTON
ISSN:	1095-9203
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA EMBAYMENT CONSTRAINTS; SOUTHEASTERN WEDDELL SEA; OCEAN CIRCULATION; DEGLACIAL HISTORY; RADIOCARBON CONSTRAINTS; CLIMATE VARIABILITY; RETREAT HISTORY; ROSS SEA; SEDIMENTATION; GREENLAND Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48365