Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 2 2008 10.5194/acp-8-397-2008 http://www.atmos-chem-phys.net/8/397/2008/ http://www.atmos-chem-phys.net/8/397/2008/acp-8-397-2008.html http://www.atmos-chem-phys.net/8/397/2008/acp-8-397-2008.pdf 397 406 2008-01-29 Past and future scenarios of the effect of carbon dioxide on plant growth and transpiration for three vegetation types of southwestern France J.-C. Calvet calvet@meteo.fr A.-L. Gibelin J.-L. Roujean E. Martin P. Le Moigne H. Douville J. Noilhan CNRM/GAME (Météo-France, CNRS), Toulouse, France The sensitivity of an operational CO₂-responsive land surface model (the ISBA-A-gs model of Météo-France) to the atmospheric CO₂ concentration, (CO₂), is investigated for 3 vegetation types (winter wheat, irrigated maize, coniferous forest). Past (1960) and future (2050) scenarios of (CO₂) corresponding to 320 ppm and 550 ppm, respectively, are explored. 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