Articles | Volume 19, issue 1
Research article
09 Jan 2023
Research article |  | 09 Jan 2023

Unraveling the mechanisms and implications of a stronger mid-Pliocene Atlantic Meridional Overturning Circulation (AMOC) in PlioMIP2

Julia E. Weiffenbach, Michiel L. J. Baatsen, Henk A. Dijkstra, Anna S. von der Heydt, Ayako Abe-Ouchi, Esther C. Brady, Wing-Le Chan, Deepak Chandan, Mark A. Chandler, Camille Contoux, Ran Feng, Chuncheng Guo, Zixuan Han, Alan M. Haywood, Qiang Li, Xiangyu Li, Gerrit Lohmann, Daniel J. Lunt, Kerim H. Nisancioglu, Bette L. Otto-Bliesner, W. Richard Peltier, Gilles Ramstein, Linda E. Sohl, Christian Stepanek, Ning Tan, Julia C. Tindall, Charles J. R. Williams, Qiong Zhang, and Zhongshi Zhang

Data sets

Sea surface temperature anomalies for Pliocene interglacial KM5c (PlioVAR) E. L. McClymont, H. L. Ford, S. L. Ho, M. Alonso-Garcia, I. Bailey, M. A. Berke, K. Littler, M. O. Patterson, B. F. Petrick, F. Peterse, A. C. Ravelo, B. Risebrobakken, S. De Schepper, G. E. A. Swann, K. Thirumalai, J. E. Tierney, C. van der Weijst, and S. White

NOAA Extended Reconstructed Sea Surface Temperature (ERSST), Version 5 B. Huang, P. W. Thorne, V. F. Banzon, T. Boyer, G. Chepurin, J. H. Lawrimore, M. J. Menne, T. M. Smith, R. S. Vose, and H.-M. Zhang

Community sourced mid-{Piacenzian} sea surface temperature (SST) data: U.S. Geological Survey data release K. Foley and H. Dowsett

Model code and software

jweiffenbach/PlioMIP2-AMOC: v1.1 J. E. Weiffenbach

Short summary
We study the behavior of the Atlantic Meridional Overturning Circulation (AMOC) in the mid-Pliocene. The mid-Pliocene was about 3 million years ago and had a similar CO2 concentration to today. We show that the stronger AMOC during this period relates to changes in geography and that this has a significant influence on ocean temperatures and heat transported northwards by the Atlantic Ocean. Understanding the behavior of the mid-Pliocene AMOC can help us to learn more about our future climate.