The Integrated microenvironmental tool includes full gas/aerosol processes, Gas phase photochemistry (SAPRC-97 mechanism, with explicit COC's). Alternative an extended CB-IV scheme can be used. The aerosol module includes 21 aerosol species, aerosol chemistry and inorganic condensation/evaporation - organic condensation. For the aerosol species a hybrid fixed/moving aerosol bin structure has been employed using in-organics (sulphate, nitrate, ammonium, chloride, sodium, hydrogen ion), organics (primary and 8 secondary), water, elemental carbon, crustal material and dissolved gases (SO2, O3, H2 O2).
The microenvironmental model is based on the MAPS1.2 aerosol model (NCAR, USA). The whole model is written in Fotran (g77). New subroutines are added to the first version of the model to deal explicitly with indoor-outdoor modelling.
The comprehensive micro-environmental model is going to be applied to investigate the indoor/outdoor chemical and physical characteristics of PM and precursors gaseous species in different urban areas in Europe under various meteorological conditions and for different weekly and daily cycles.