Comparison and evaluation of the 1 km and 5 km resolution FRAME modelled annual concentrations of nitrogen oxides Online publication date: Wed, 19-Nov-2014
by Maciej Kryza; Anthony J. Dore; Małgorzata Werner; Marek Błaś
International Journal of Environment and Pollution (IJEP), Vol. 50, No. 1/2/3/4, 2012
Abstract: The aim of this paper is to compare and evaluate the modelled annual nitrogen oxides (NOx) air concentrations calculated for the same area at two different grid resolutions of 1 km and 5 km. The FRAME model was used for the domains covering Poland. Simulations were performed for the years 2005-2008. The input files for the model were provided separately for both 1 km and 5 km grids, whilst keeping the emission, meteorological and boundary condition data constant. 1 km and 5 km runs result in a similar spatial pattern and country average value of NOx concentrations. For the 1 km simulations, the maximum values are higher and the emission source areas are distinctly separated from the rural background regions. The evaluation of the 1 km and 5 km results shows that the model - measurement agreement is improved with the high resolution simulations in terms of mean errors.
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