Tropospheric Ozone Research: Monitoring and modelling of photo-oxidants over Europe

The Dutch activities contributing to the EUROTRAC-TOR programme were set up to study and quantify the underlying chemical and transport processes important to the occurrence of photochemical oxidants in Europe. The project involved establishing an advanced monitoring site at Kollumerwaard, monitoring for a number of years and evaluating the data, which included a modelling effort. This report contains the technical and scientific documentation of the observatory, a documentation of the TOR database, an evaluation of the O₃, NMVOC, CO, CO₂, CH₄ and PAN data, both from Kollumerwaard and the international TOR network, and a description of the modelled European O3 budget.