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Assessing the contribution of the main emission sources to particulate matter concentrations in the Milan area

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Assessing the contribution of the main emission sources to particulate matter concentrations in the Milan area

matterconcentrations in the Milan area Guido Pirovano*, Marco Bedogni**, Simone Casadei** HARMO 12 Conference 12th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes Cavtat, Croazia, 6-9 Ottobre 2008 * CESI RICERCA ** AMA-MOBILITY & ENVIRONMENT AGENCY OF MILAN On the basis of CityDelta III project input dataset, the CAMx chemical and transport Eulerian model has been applied over a 300×300 km 2 domain focused on the Milan area (Northern part of Italy) for the whole 2004. Model results have been analysed by mean of the Source Apportionment technique at the Milan receptor, in order to discriminate the contribution of several key emission sectors, also distinguishing the most emitting area of Milan from the surroundings. Obtained results highlight that road transport is the most relevant sector, followed by agriculture and domestic heating. The source apportionment analysis also revealed that more than 70% of the PM10 is due to emissions outside of Milan. Key words: Source apportionment technique, PM10 modelling, Chemical and Transport Models, Po Valley air quality

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