Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 7 5 2007 10.5194/acpd-7-14895-2007 http://www.atmos-chem-phys-discuss.net/7/14895/2007/ http://www.atmos-chem-phys-discuss.net/7/14895/2007/acpd-7-14895-2007.html http://www.atmos-chem-phys-discuss.net/7/14895/2007/acpd-7-14895-2007.pdf 14895 14937 2007-10-16 GEM-AQ, an on-line global multiscale chemical weather system: model description and evaluation of gas phase chemistry processes J. W. Kaminski jacek@yorku.ca L. Neary J. Struzewska J. C. McConnell A. Lupu J. Jarosz K. Toyota S. L. Gong J. Côté X. Liu K. Chance A. Richter Centre for Research in Earth and Space Science, Atmospheric Modelling and Data Assimilation Laboratory, York University, Toronto, Canada Institute of Environmental Engineering Systems, Warsaw University of Technology, Warsaw, Poland Science and Technology Branch, Environment Canada, Toronto, Canada Science and Technology Branch, Environment Canada, Montréal, Canada Smithsonian Astrophysical Observatory, Cambridge, MA, USA Institute of Environmental Physics, University of Bremen, Germany now at: Goddard Earth Sciences and Technology, University of Maryland Baltimore County, Baltimore, MD, USA Tropospheric chemistry and air quality processes were implemented on-line in the Global Environmental Multiscale model. The integrated model, GEM-AQ, has been developed as a platform to investigate chemical weather at scales from global to urban. 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