Abstract
The improved Gaussian dispersion model AEROPOL (University of Tartu, Estonia) is validated against the Copenhagen air pollution dispersion dataset belonging to the Model Validation Kit of the Initiative on 'Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes'. Model updates include the application of (1) surface heat flux instead of indirect indicators of surface layer stability and (2) two-level wind data instead of one (10 m) level. Validation results show a fair agreement of modelled and measured concentrations. In comparison with several models validated earlier, the scatter of modelled versus measured data is moderate, but a systematic deviation is small. Thus, the AEROPOL model is recommended for urban dispersion calculations in nearly neutral conditions. Best results are expected for long-term average pollution levels.
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