Consistently dated Atlantic sediment cores over the last 40 thousand years

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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Waelbroeck Claire, Lougheed Bryan C., Vazquez Riveiros Natalia, Missiaen Lise, Pedro Joel, Dokken Trond, Hajdas Irka, Wacker Lukas, Abbott Peter, Dumoulin Jean-Pascal, Thil François, Eynaud Frédérique, Rossignol Linda, Fersi Wiem, Albuquerque Ana Luiza, Arz Helge, Austin William E. N., Came Rosemarie, Carlson Anders E., Collins James A., Dennielou Bernard, Desprat Stéphanie, Dickson Alex, Elliot Mary, Farmer Christa, Giraudeau Jacques, Gottschalk Julia, Henderiks Jorijntje, Hughen Konrad, Jung Simon, Knutz Paul, Lebreiro Susana, Lund David C., Lynch-Stieglitz Jean, Malaizé Bruno, Marchitto Thomas, Martínez-Méndez Gema, Mollenhauer Gesine, Naughton Filipa, Nave Silvia, Nürnberg Dirk, Oppo Delia, Peck Victoria, Peeters Frank J. C., Penaud Aurélie, Portilho-Ramos Rodrigo da Costa, Repschläger Janne, Roberts Jenny, Rühlemann Carsten, Salgueiro Emilia, Sanchez Goni Maria Fernanda, Schönfeld Joachim, Scussolini Paolo, Skinner Luke C., Skonieczny Charlotte, Thornalley David, Toucanne Samuel, Rooij David Van, Vidal Laurence, Voelker Antje H. L., Wary Mélanie, Weldeab Syee, Ziegler Martin (2019). Consistently dated Atlantic sediment cores over the last 40 thousand years. Scientific Data. 6 (1). 165 (12p.).,

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