TFIAM 48 will take place in Berlin, Germany, hosted by the German Environment Agency (Umweltbundesamt). At TFIAM 48 you will be updated on new developments in European Integrated Assessment Modelling and we would like to invite national experts to present their assessment work for the development of the national air quality plans and the challenges they encountered. We are as always keen to learn more about new developments in Integrated Assessment Modelling from national and international modelling groups and especially to learn from your experiences in supporting the preparation of the national air quality plan with scenarios or assessments of costs and benefits. We would like to ask you to indicate the tentative title of your presentation in the registration form. A detailed agenda for the meeting will be circulated to the meeting participants in mid-April.