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Consistently dated Atlantic sediment cores over the last 40 thousand years

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Author(s)

Claire Waelbroeck, Bryan C. Lougheed, Natalia Vazquez Riveiros, Lise Missiaen, Joel Pedro, Trond Dokken, Irka Hajdas, Lukas Wacker, Peter Abbott, Jean-Pascal Dumoulin, François Thil, Frédérique Eynaud, Linda Rossignol, Wiem Fersi, Ana Luiza Albuquerque, Helge Arz, William E. N. Austin, Rosemarie Came, Anders E. Carlson, James A. Collins & 43 others Bernard Dennielou, Stéphanie Desprat, Alex Dickson, Mary Elliot, Christa Farmer, Jacques Giraudeau, Julia Gottschalk, Jorijntje Henderiks, Konrad Hughen, Simon Jung, Paul Knutz, Susana Lebreiro, David C. Lund, Jean Lynch-Stieglitz, Bruno Malaizé, Thomas Marchitto, Gema Martínez-Méndez, Gesine Mollenhauer, Filipa Naughton, Silvia Nave, Dirk Nürnberg, Delia Oppo, Victoria Peck, Frank J. C. Peeters, Aurélie Penaud, Rodrigo da Costa Portilho-Ramos, Janne Repschläger, Jenny Roberts, Carsten Rühlemann, Emilia Salgueiro, Maria Fernanda Sanchez Goni, Joachim Schönfeld, Paolo Scussolini, Luke C. Skinner, Charlotte Skonieczny, David Thornalley, Samuel Toucanne, David Van Rooij, Laurence Vidal, Antje H. L. Voelker, Mélanie Wary, Syee Weldeab, Martin Ziegler

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Abstract

Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system and underlining the possibility of rapid climate shifts in response to anthropogenic greenhouse gas forcing. To date, these rapid changes in climate and ocean circulation are still not fully explained. One obstacle hindering progress in our understanding of the interactions between past ocean circulation and climate changes is the difficulty of accurately dating marine cores. Here, we present a set of 92 marine sediment cores from the Atlantic Ocean for which we have established age-depth models that are consistent with the Greenland GICC05 ice core chronology, and computed the associated dating uncertainties, using a new deposition modeling technique. This is the first set of consistently dated marine sediment cores enabling paleoclimate scientists to evaluate leads/lags between circulation and climate changes over vast regions of the Atlantic Ocean. Moreover, this data set is of direct use in paleoclimate modeling studies.
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Details

Original languageEnglish
Article number165
Number of pages12
JournalScientific Data
Volume6
DOIs
Publication statusPublished - 2 Sep 2019

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