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Analysis of particulate matter concentrations in Mazovia region, central Poland, based on 2007-2010 data

Pietruczuk A., Jarosławski J.

Acta Geophysica

2013

Vol. 61, no. 2

445--462

Measurement results of PM10 (par ticulate matter with diameters below 10µm) concentrations performed at four stations in central Poland (2007-2010) were analyzed in terms of levels and distributions of concentrations, the number of exceedances of the limit values and the causes of these exceedances. PM10 levels were similar at suburban and rural stations, except of one station located in the vicinity of a busy street. The median of PM10 concentration ranged from 26µg/m³ at suburban station to 44µg/m³ at Warsaw Kerb station. Seasonal variability analysis of PM10 concentration revealed an additional maximum beyond the usual autumn-winter one. This maximum occurred in April at all stations, and corresponded to seasonal wildfires activity and dust activation in Eastern Europe. Cluster analysis of back-traj ectories revealed that PM10 concen- trations depend on the direction of advection of the incoming air; the highest values are registered for air of regional and southern origins, while the lowest are for the airma sses coming from the north and north-west direction.