Particulate matter source apportionment for the urban center of Thessaloniki (Greece) using the WRF-CAMx modeling system

The main aim of this work is the investigation of the contribution of different emission sources to the concentrations of Particulate Matter (PM) in Thessaloniki (Figure 1). More emphasis is given on the contribution of the maritime/harbor activities for which any existing information is very limited. PM is a key pollutant in the urban atmosphere of Thessaloniki. The 24-h EU limit value for PM10 is frequently exceeded in the urban monitoring sites, ranking the city among the most polluted in Europe regarding PM10.