Geoscientific Model Development Discussions www.geosci-model-dev-discuss.net 1991-9611 1991-962X 3 3 2010 10.5194/gmdd-3-1161-2010 http://www.geosci-model-dev-discuss.net/3/1161/2010/ http://www.geosci-model-dev-discuss.net/3/1161/2010/gmdd-3-1161-2010.html http://www.geosci-model-dev-discuss.net/3/1161/2010/gmdd-3-1161-2010.pdf 1161 1184 2010-08-04 IMOGEN: an intermediate complexity model to evaluate terrestrial impacts of a changing climate C. Huntingford chg@ceh.ac.uk B. B. B. Booth S. Sitch N. Gedney J. A. Lowe S. K. Liddicoat L. M. Mercado M. J. Best G. P. Weedon R. A. Fisher P. Good P. Zelazowski A. C. Spessa C. D. Jones Centre for Ecology and Hydrology, Wallingford, OXON, OX10 8BB, UK Met Office Hadley Centre, FitzRoy Road, Exeter, Devon, EX1 3PB, UK Joint Centre for Hydro-Meteorological Research, Met Office Hadley Centre, Wallingford, OXON, OX10 8BB, UK Reading Unit, Met Office Hadley Centre, Department of Meteorology, University of Reading, Earley Gate, P.O. Box 243, Reading, RG6 6BB, UK Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK Environmental Change Institute, School of Geography and the Environment, Oxford, OX1 3QY, UK National Centre for Atmospheric Sciences, Department of Meteorology, University of Reading, Earley Gate, P.O. Box 243, Reading, RG6 6BB, UK now at: School of Geography, University of Leeds, LS2 9JT, UK now at: Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico, NM 87545, USA We present a computationally efficient modelling system, IMOGEN, designed to undertake global and regional assessment of climate change impacts on the physical and biogeochemical behaviour of the land surface. A pattern-scaling approach to climate change drives a gridded land surface and vegetation model MOSES/TRIFFID. 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