engleski

Air quality modeling of particulate matter in the Pannonian basin during winter stable atmospheric conditions

Long lasting stable meteorological conditions resulted in decreased local dispersion and lead to regionally high PM10 concentrations in Pannonian basin during November, 2011. Previous studies of the same episode investigated enhanced regional PM10 contributions and sources in Eastern Europe at urban and rural stations in Croatia, Hungary and Serbia using monitored air quality and meteorological data, backward air mass trajectories and results of a NWP WRF model. Within the research with the NWP WRF model, various tests were made with implementation of the new, improved mixing length in MYJ PBL scheme. Default and modified setup of the NWP WRF model were both later coupled with dispersion models. Air pollution episode was interrupted by strong northeastern bora flow that initiated the resuspension of crustal elements into the air. The identification of sources was generally based on the results of meteorological model. This study presents the continuation and exploration of the research by application of regional and high resolution air quality models. Regional EMEP model was used to simulate long range, trans-boundary transport of PM10 concentrations and the composition of particulate matter. EMEP model was used to assess the background level of concentrations. Furthermore CAMx high resolution model was applied to evaluate the contribution of local anthropogenic sources. Using complex atmospheric chemistry models it was possible to analyze the main processes contributing to the high PM concentration on regional and local scale and to compare the performance of two different air quality models. The model intercomparison and validation contribute to the general knowledge of model’s ability to simulate different processes and contribute to harmonized scientific applications to assess air quality.

PM episode, identification of sources, air quality modeling, model intercomparison, mixing length scale parametrization

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