Surface ocean temperatures in the Northeast Atlantic during the last 500,000 years : Evidence from foraminiferal census data.

Kandiano, Evgeniya and Bauch, Henning (2003) Surface ocean temperatures in the Northeast Atlantic during the last 500,000 years : Evidence from foraminiferal census data. Terra Nova, 15 (4). pp. 265-271. DOI 10.1046/j.1365-3121.2003.00488.x.

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Abstract

Changes in North Atlantic sea surface temperature (SST) are regarded as a key element of the climate during the Quaternary. However, there are relatively few long-term records providing quantitative SST estimates from this region. Using planktic foraminiferal-derived SSTs together with changes on species level and iceberg-rafted debris, the last 500 ka were studied. Pronounced SST changes, as determined from the last glacial–interglacial cycle, characterize most colder periods. Peak interglacial temperatures were found for marine isotope stages (MIS) 1, 5e and 11, the latter two being the warmest. The warm substages within MIS 7 and 9 are marked by enhanced dissimilarity coefficients, indicating that SSTs obtained for these times appear to be overestimated. This is corroborated by differences within the species assemblage, which show enhanced cold water components. It is therefore concluded that detailed analysis down to species level is a crucial prerequisite to better reconstructions of SST.

Document Type: Article
Keywords: Northeast Atlantic; Water temperature; Surface temperature; Marine geology; Paleoceanography
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1046/j.1365-3121.2003.00488.x
ISSN: 0954-4879
Projects: Laptev Sea System, Permafrost
Date Deposited: 19 Feb 2015 11:41
Last Modified: 03 Jun 2016 10:54
URI: http://oceanrep.geomar.de/id/eprint/27574

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