WG2 of FAIRMODE has identified some key topics related to the use and performance of air quality models for the purposes of the EU Air Quality Directive (AQD). A working sub-group (SG) has been formed to address each topic and to organise a series of relevant modelling exercises.
SG2 focuses on source apportionment and the contribution of natural sources on pollutant concentrations, acknowledging the fact that realistic source apportionment is a prerequisite for effective air quality management. Moreover, one of the key elements in the current AQD is the possibility to discount natural sources of pollution (especially in the case of PM) when assessing compliance against limit values. In this context, both a theoretical treatment as well as modelling exercises, emphasising on the methods to identify and estimate uncertainties, constitute relevant aspects of the envisaged work.
The activities of SG2 will take place in close collaboration with the JRC initiative for a "European intercomparison for receptor modelling of air pollutants".The starting point of the Intercomparison Exercise was the workshop “The Use of Receptor Models in the Source Apportionment of Air Pollutants”., that took place on the 4-5 of November 2010 in JRC, Ispra (Meeting minutes). During the workshop experts from different European research groups provided their input on the controversial aspects of receptor models with the aim of agreeing on common criteria for carrying out and evaluating source identification with this methodology.
Leader: Claudio Belis of the European Commission - Joint Research Centre.