1. Engagement and Expertise: Air-Quality Modelling and Local Understandings of Air Pollution Research team: Steve Yearley, John Forrester, Steve Cinderby, Peter Bailey & Paul Rosen

2. Background Interest in the public understanding of science, particularly in simulations and models Interest in the role of participation in environmental assessment and decision- making: the context of theories and of other practical exercises Interest in how models are used (a practical concern for SEI). We searched for a case-study …..

3. map of case- study sites

4. Illustrative model output from Sheffield

5. Approach taken in citizen groups

6. Categorization of responses from citizen groups 1. Utilization of resources 2. Lack of monitoring equipment and activity 3. Use of the model within the Council as a whole 4. Specification of baseline data 5. The analytical boundaries 6. Public involvement in model representation and extrapolation 7. Communicating the results - and analysis - to the public