Air pollution remains a major environmental issue despite many years of
study and much legislative control. In rec nt times, pollution on a
global scale has become of particular concern. The gradually changing
con- centration of trace gases in the global troposphere due to man's
activity is becomming a matter of serious concern. No scientist would
dare to pre- dict in detail the consequences of this gradual change due
to its immense complexity involving social and economic factors and near
countless chemical and phjsical cycles in our biosphere. In this chain
of processes, the transport of pollution is an important factor, but
only a factor. Therefore, I would like to emphasize that the mOdelling
of atmospheric transport is becoming more and more an activity which
fits into larger frameworks and can no longer be exercised as a single
step, which bridges the gap between emissions and policy measures. This
is also reflected in the topics and papers which were presented at this
conference. The topics were: - emission invetories for and source
treatment in air pollution dispersion models; - modelling of accidental
releases; - regional and global scale dispersion mOdelling; including
boundary layer-free troposphere exchange processes and subgrid scale
parameter- isations; - model verification and policy implications; - new
developments in dispersion modelling and theory. 56 papers were
presented in these sections. While many posters were dis- cussed in a
special session.