Abstract
An international Consortium for the MAFOR Open Access (OA) model was founded with the purpose to give guidance for the conversion of the sectional aerosol dynamics MAFOR from a proprietary code into a community aerosol model. The Consortium supervises the publication and development of the community aerosol model and provides a platform for the exchange and inter-comparison of models, and their evaluation against experimental results. The common intention is to establish MAFOR as a state-of-the-art benchmark model for evaluating aerosol processes in dispersion studies.