Preparation of emission data for modeling with CMAQ from Spanish emission inventories and emission projections

The Technical University of Madrid (UPM) is currently studying the different alternatives to reduce air pollution in Spain. The policy design and decision-making for improving Air Quality are based on emission projections up to 2020 under several scenarios. The following step is to evaluate the impact of these scenarios using an Air Quality Model. The US EPA CMAQ modeling system has been selected and therefore the focus is on providing SMOKE all the Emission Inventory information to generate model-ready emission data. Emission inventory preparation is a critical stage in Air Quality Modeling and there is a great lack of quality input information in the Spanish case. In spite of having a very flexible design, CMAQ and SMOKE modeling systems are developed taking into account the inventory formats and particular conditions of the United States. The National Spanish Inventory is made according to the European CORINAIR methodology, so a specific methodology to adapt it to the modeling system is needed. This paper shows briefly the main issues of this process.