Abstract
The weather research and forecasting model has been applied to derive information on meteorological variables for the period with high concentrations of PM 10 (1–30 December 2009) in SW Poland. Three one-way nested domains have been used and the results for the innermost domain have been compared with surface and radiosonde meteorological measurements for pressure (PRES), air temperature (TMP), specific humidity (SPFH), wind speed (WIND) and direction (WDIR). The model results are in good agreement with the surface measurements for TMP, PRES and SPFH, with the index of agreement (IOA) above 0.9. The model underestimate the observed PRES, TMP and SPFH except for the mountainous site Śniezka. The WIND is biased high, the overall IOA is 0.62, and range from 0.41 to 0.73 for all stations. The IOA is above 0.73 for TMP and SPFH for radiosonde measurements and the errors decrease with height.
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