A high-resolution radiolarian-derived paleotemperature record for the Late Pleistocene-Holocene in the Norwegian Sea

Dolven, JK, Cortese, G and Bjorklund, KR (2002) A high-resolution radiolarian-derived paleotemperature record for the Late Pleistocene-Holocene in the Norwegian Sea. Paleoceanography, 17(4). 1072. doi:10.1029/2002PA000780 PANGAEA Supplementary Data

Abstract

Polycystine radiolarians are used to reconstruct summer sea surface temperatures (SSSTs) for the Late Pleistocene-Holocene (600-13,400 14C years BP) in the Norwegian Sea. At 13,200 14C years BP, the SSST wasclose to the average Holocene SSST (~12°C). It then gradually dropped to 7.1°C in the Younger Dryas. Nearthe Younger Dryas-Holocene transition (10,000 14C years BP), the SSST increased 5°C in about 530 years.Four abrupt cooling events, with temperature drops of up to 2.1°C, are recognized during the Holocene: at 9340,7100 (8200 calendar years event), 6400 and 1650 14 C years BP. Radiolarian SSSTs and the isotopic signalfrom the GISP2 ice core are strongly coupled, stressing the importance of the Norwegian Sea as a mediator ofheat/precipitation exchange between the North Atlantic, the atmosphere, and the Greenland ice sheet.Radiolarian and diatom-derived SSSTs display similarities, with the former not showing the recently reportedHolocene cooling trend.

Item Type: Article
Additional Information: PANGAEA reference ID: 24368 Serial: RCOM0273
Subjects: MARUM
MARUM > MARUM OC - Ocean and Climate
peer reviewed publications
www.marum.de
Divisions: MARUM
Depositing User: Eprints Administrator
Date Deposited: 25 Jul 2013 10:15
Last Modified: 25 Jul 2013 10:15
URI: http://publications.marum.de/id/eprint/1802

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