2. Key drivers for Atmospheric Science Research Expertise of and facilities available to researchers Strategic requirements for atmospheric science research: –UK Government –European Commission NERC’s strategic requirements for AS research Needs of operational stake holders (e.g. Met Office, Environment Agency)

3. Key AS Science Challenges 1. Quantifying global, regional and local changes to chemical and physical composition of the atmosphere –Both Air Quality and Climate Change –Molecular composition –Physics and Chemistry of aerosols –Oxidizing capacity of the atmosphere –Urban AQ –Global compositional distribution.

4. NCAS’s components of relevance to Urban Air Quality Universities Weather Research Network –Steve Belcher’s paper: urban meteorology / urban chemistry / data assimilation Distributed Institute for Atmospheric Composition –Strategy on web (http://diac.nerc.ac.uk). Includes AQ.http://diac.nerc.ac.uk –1 (2) PDRAs, one of them to coordinate a consortium bid in Urban AQ. NERC Atmospheric Observational Facilities (FAAM, UFAM) Atmospheric Chemistry Modelling Support Unit