Urban pollution meteorology is characterized by a number of fundamental parameters (wind speed, mixing layer depth etc.) and their evolution in time. Action 715 increased the knowledge of, and the accessibility to, the main meteorological parameters which determine urban pollution levels. It concluded with recommendations on the best way of using routine meteorological information in air pollution assessments. The focus on the European aspects of urban areas problems is new. Valuable scientific information can now be added to the models for European cities. In the past such models were not always applicable to European conditions. The Action stimulated very important scientific programmes and experiments including FUMAPEX, which is a successful FP5 project. Finally, Action 715 addressed one of the key issues of urban policy in Europe which has formed the basis for the follow up in two further COST Actions. The Final Report of the Action is in print and should be available in May 2005.
