Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 1 2008 10.5194/acp-8-15-2008 http://www.atmos-chem-phys.net/8/15/2008/ http://www.atmos-chem-phys.net/8/15/2008/acp-8-15-2008.html http://www.atmos-chem-phys.net/8/15/2008/acp-8-15-2008.pdf 15 24 2008-01-04 Aerosols' influence on the interplay between condensation, evaporation and rain in warm cumulus cloud O. Altaratz I. Koren T. Reisin A. Kostinski G. Feingold Z. Levin Y. Yin Department of Environmental Sciences, Weizmann Institute, Rehovot, Israel Soreq Nuclear Research Center, Yavne, Israel Department of Physics, Michigan Technological University, Houghton, Michigan, USA NOAA Earth System Research Laboratory, Boulder, Colorado, USA Department of Geophysics and Planetary Sciences, Tel Aviv University, Tel Aviv, Israel Department of Applied Meteorology, Nanjing University Information Science & Technology, Nanjing, China A numerical cloud model is used to study the influence of aerosol on the microphysics and dynamics of moderate-sized, coastal, convective clouds that develop under the same meteorological conditions. The results show that polluted convective clouds start their precipitation later and precipitate less than clean clouds but produce larger rain drops. 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