Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 9 3 2009 10.5194/acpd-9-11269-2009 http://www.atmos-chem-phys-discuss.net/9/11269/2009/ http://www.atmos-chem-phys-discuss.net/9/11269/2009/acpd-9-11269-2009.html http://www.atmos-chem-phys-discuss.net/9/11269/2009/acpd-9-11269-2009.pdf 11269 11285 2009-05-05 Exploiting the weekly cycle as observed over Europe to analyse aerosol indirect effects in two climate models J. Quaas johannes.quaas@zmaw.de O. Boucher A. Jones J. Kieser H. Joos Max Planck Institute for Meteorology, Bundesstr. 53, 20146 Hamburg, Germany Met Office Hadley Centre, FitzRoy Road, Exeter EX1 3PB, UK now at: Institute for Atmospheric and Climate Science, ETH Zürich, Universitätsstr. 16, 8092 Zürich, Switzerland A weekly cycle in aerosol pollution and meteorological quantities is observed over Europe. In the present study we exploit this effect to analyse aerosol-cloud-radiation interactions. 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