Matthew Huber, James C Zachos, Paul Nicholas Pearson, Bridget S. Wade, Bette L. Otto-Bliesner, Sandy Kirtland Turner, Yannick Donnadieu, Allegra N. LeGrande, Reinhardt Kozdon, Petra Langebroek, Arne M.E. Winguth, Anna von der Heydt, Christine A. Shields, Paul J. Markwick, Michael Starz, Garland R. Upchurch, Srinath Krishnan, Scott L. Wing, Jean-Baptiste Ladant, Caroline H Lear, Kathryn E. Snell, Ran Feng, Richard E. Zeebe, Nicky M. Wright, Gregory J. L. Tourte, Edward Gasson, Henk A. Dijkstra, Rodrigo Caballero, Christopher J. Hollis, Jessica E. Tierney, Kate Littler, Michiel Baatsen, Robert L. Korty, Jeff Kiehl, Gordon N. Inglis, Aradhna Tripati, S. M. Jones, Eleni Anagnostou, James R Super, Clay R. Tabor, Gavin L. Foster, Rob DeConto, Ulrich Salzmann, Daniel J. Lunt, David Evans, Christopher J. Poulsen, School of Geographical Sciences [Bristol], University of Bristol [Bristol], Institute for Marine and Atmospheric Research [Utrecht] (IMAU), Utrecht University [Utrecht], Department of Meteorology [Stockholm] (MISU), Stockholm University, Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Modélisation du climat (CLIM), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Aston University [Birmingham], University of Nottingham, UK (UON), NASA Goddard Space Flight Center (GSFC), Camborne School of Mines, College of Engineering, Mathematics and Physical Sciences, University of Exeter, National Center for Atmospheric Research [Boulder] (NCAR), Archäobotanik Afrikas, Goethe-Universität Frankfurt am Main, University of Arizona, Department of Earth Sciences, University of Cambridge, University of Cambridge [UK] (CAM), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Department of Earth Sciences [University of Cambridge], and University of St Andrews. Earth and Environmental Sciences
We thank NERC grant NE/N006828/1 for providing funds for the first DeepMIP meeting in Boulder, Colorado, USA, in January 2016. Daniel J. Lunt acknowledges the NERC grant “Cretaceous–Paleocene–Eocene: Exploring Climate and Climate Sensitivity” (NE/K014757/1), and advanced ERC grant “The Greenhouse Earth System” (T-GRES, project reference 340923), awarded to Rich Pancost. Matthew Huber acknowledges funding from NSF OCE-0902882. Michiel L. J. Baatsen, Henk A. Dijkstra, and Anna S. von der Heydt acknowledge support by the Netherlands Earth System Science Centre (NESSC), financially supported by the Ministry of Education, Culture and Science (OCW), 024.002.001. Past warm periods provide an opportunity to evaluate climate models under extreme forcing scenarios, in particular high (> 800ppmv) atmospheric CO2 concentrations. Although a post hoc intercomparison of Eocene (∼ 50 Ma) climate model simulations and geological data has been carried out previously, models of past high-CO2 periods have never been evaluated in a consistent framework. Here, we present an experimental design for climate model simulations of three warm periods within the early Eocene and the latest Paleocene (the EECO, PETM, and pre-PETM). Together with the CMIP6 pre-industrial control and abrupt 4 × CO2 simulations, and additional sensitivity studies, these form the first phase of DeepMIP-the Deep-time Model Intercomparison Project, itself a group within the wider Paleoclimate Modelling Intercomparison Project (PMIP). The experimental design specifies and provides guidance on boundary conditions associated with palaeogeography, greenhouse gases, astronomical configuration, solar constant, land surface processes, and aerosols. Initial conditions, simulation length, and output variables are also specified. Finally, we explain how the geological data sets, which will be used to evaluate the simulations, will be developed. Publisher PDF