It has been extended to include secondary organic aerosol formation (based on the approach of Odum et al., 1996). ###>Le mÃ©canisme a Ã©tÃ© modifÃ­Ã© de faÃ§on Ã inclure les rÃ©actions de formation des particules organiques secondaires (selon lâEUR(TM)approche de Odum et al., 1996).