Preparing for the European Thematic Strategy on air pollution: at the interface between science and policy

In 2005 the European Commission launched a Thematic Strategy on air pollution for the European Union. We use an analytical framework that relates credibility, legitimacy and relevance of assessments to “boundary work” between science and policy to address the following questions: (1) how did experts, stakeholders and policy makers in the process distribute roles and tasks between them and how did they work together and (2) to what extent and in what way did this constitute credibility, legitimacy and relevance of the assessment? We conclude that the European Commission took great effort to organise a transparent assessment process based on scientific knowledge and with extensive involvement of stakeholders and Member States. Bilateral consultations, review of integrated assessment models, and transparency and documentation of integrated assessment work played an important role in enhancing credibility, legitimacy and relevance for the Member States. On the other hand, some industry groups were not satisfied with their role as stakeholders instead of experts. However the assessment established a sufficient degree of credibility, legitimacy and relevance with the majority of the actors involved to have an impact on the actual policy process.