Prioritising the sources of pollution in European cities: do air quality modelling applications provide consistent responses?

Degraeuwe, Bart; Pisoni, Enrico; Thunis, Philippe

To take decisions on how to improve air quality, it is useful to perform a source allocation study that identifies the main sources of pollution for the area of interest. Often source allocation is performed with a chemical transport model (CTM) but unfortunately, even if accurate, this technique is time consuming and complex. Comparing the results of different CTMs to assess the uncertainty of source allocation results is even more difficult. In this work, we compare the source allocation (for PMinline-formula2.5 yearly averages) in 150 major cities in Europe, based on the results of two CTMs (CHIMERE and EMEP), approximated with the SHERPA (Screening for High Emission Reduction Potential on Air) approach. Although contradictory results occur in some cities, the source allocation results obtained with the two SHERPA simplified models lead to similar results in most cases, even though the two CTMs use different input data and configurations.

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Degraeuwe, Bart / Pisoni, Enrico / Thunis, Philippe: Prioritising the sources of pollution in European cities: do air quality modelling applications provide consistent responses?. 2020. Copernicus Publications.

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