The Megapoli Paris campaign for Urban aerosol characterisation - A comprehensive data set for air quality model evaluation

Within the FP7 MEGAPOLI project, two intensive field campaigns have been conducted in the Greater Paris region during July 2009 and January/February 2010. The major aim was to quantify sources of primary and secondary aerosol, and the interaction with gaseous precursors, in and around a large agglomeration in temperate latitudes. From this campaign, a comprehensive data set will be built which will be available for urban and regional scale air quality model evaluation. The paper will present campaign objectives and set-up, first results, and specific benchmarks, which should be most useful for model evaluation.