Geoscientific Model Development Discussions www.geosci-model-dev-discuss.net 1991-9611 1991-962X 2 2 2009 10.5194/gmdd-2-1215-2009 http://www.geosci-model-dev-discuss.net/2/1215/2009/ http://www.geosci-model-dev-discuss.net/2/1215/2009/gmdd-2-1215-2009.html http://www.geosci-model-dev-discuss.net/2/1215/2009/gmdd-2-1215-2009.pdf 1215 1244 2009-10-20 Pliocene Model Intercomparison Project (PlioMIP): experimental design and boundary conditions (Experiment 1) A. M. Haywood earamh@leeds.ac.uk H. J. Dowsett B. Otto-Bliesner M. A. Chandler A. M. Dolan D. J. Hill D. J. Lunt M. M. Robinson N. Rosenbloom U. Salzmann L. E. Sohl School of Earth and Environment, Univ. of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK Eastern Geology and Climate Science Center, US Geological Survey, MS926A, 12201 Sunrise Valley Drive, Reston, VA 20192, USA CCR, CGD/NCAR, P.O. Box 3000, Boulder, CO 80307-3000, USA Center for Climate Systems Research, Columbia Univ., 2880 Broadway, New York, New York 10025, USA NASA Goddard Institute for Space Studies, New York, NY, USA British Antarctic Survey, High Cross, Madingley Road, Cambridge, Cambs, CB3 0ET, UK School of Geographical Sciences, Univ. of Bristol, University Road, Bristol, BS8 1SS, UK In 2008 the temporal focus of the Palaeoclimate Modelling Intercomparison Project was expanded to include a model intercomparison for the mid-Pliocene warm period (ca. 2.97 to 3.29 Ma BP). This project is referred to as PlioMIP (Pliocene Model Intercomparison Project). Two experiments have been agreed upon and comprise phase 1 of the PlioMIP. The first (Experiment 1) will be performed with atmosphere-only GCMs. The second (Experiment 2) will utilise fully coupled ocean-atmosphere GCMs. This paper describes the experimental design and boundary conditions that will be utilised for Experiment 1 of the PlioMIP project. 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