Articles | Volume 19, issue 1
https://doi.org/10.5194/cp-19-123-2023
https://doi.org/10.5194/cp-19-123-2023
Research article
 | 
13 Jan 2023
Research article |  | 13 Jan 2023

Sea surface temperature evolution of the North Atlantic Ocean across the Eocene–Oligocene transition

Kasia K. Śliwińska, Helen K. Coxall, David K. Hutchinson, Diederik Liebrand, Stefan Schouten, and Agatha M. de Boer

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Latest update: 21 Jun 2024
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Short summary
We provide a sea surface temperature record from the Labrador Sea (ODP Site 647) based on organic geochemical proxies across the late Eocene and early Oligocene. Our study reveals heterogenic cooling of the Atlantic. The cooling of the North Atlantic is difficult to reconcile with the active Atlantic Meridional Overturning Circulation (AMOC). We discuss possible explanations like uncertainty in the data, paleogeography and atmospheric CO2 boundary conditions, model weaknesses, and AMOC activity.