An Analysis of Regional Differences in Tropospheric Ozone Over Europe

It is a well known fact, based on observations and modelling studies, that there are large spatial gradients over Europe in ozone characteristics. These differences are caused by the differences in strength of the phenomena which determine the ozone concentration at a specific location: the precursor emissions and the resulting chemical production, the meteorological situation and the dry deposition. Ozone measurements show the differences in ozone characteristics, but do not reveal the reasons for the differences.