One of the principal concerns in recent years regarding the atmospheric environment has been the formation of ozone and other photo-oxidants over much of Europe in the summer. Ozone is formed in the atmosphere by a complex series of chemical reactions in the presence of sunlight from volatile organic compounds and nitrogen oxides. As the reactions take place in air flows determined by the detailed meteorological situation, the measurement, interpretation, understanding and modelling of the levels, fluxes and origins of the ozone are extremely difficult. The present volume reviews several of the currently important questions and presents detailed reports from investigators all over the continent. As such, it provides insight into the current scientific views about ozone in Europe.

Inhalt
1 An Overview of Tropospheric Ozone Research.- 2 Spatial and Temporal Variability of Tropospheric Ozone over Europe.- 3 The Emission and Distribution of Ozone Precursors over Europe.- 4 Photochemical Ozone Production Rates at Different TOR Sites.- 5 Exchange of Ozone Between the Atmospheric Boundary Layer and the Free Troposphere.- 6 Stratosphere-Troposphere Exchange Regional and Global Tropopause Folding Occurrence.- 7 Ozone and its Precursors in Europe: Photochemical Production and Transport across Regional Boundaries.- Individual Reports from TOR Contributors.- 8 Ozone Monitoring and Measurements.- 9 Transport and Transformation of Ozone.- 10 Monitoring of Atmospheric Constituents.- 11 Vertical Profiles and Transport of Ozone.- 12 Modelling Studies.- 13 TOR Publications 1988-1995.