Mesoscale simulation of meteorological profiles during the Sofia Experiment 2003 Online publication date: Sat, 05-Aug-2017
by Hristina Kirova; Ekaterina Batchvarova
International Journal of Environment and Pollution (IJEP), Vol. 61, No. 2, 2017
Abstract: Sofia is situated in a mountain valley and suffers from air pollution problems. The planetary boundary-layer-evolution Sofia-Experiment 2003 (comprising radiosoundings every 2 h with vertical resolution 3-4 m) was used to evaluate one configuration of the Weather Research and Forecasting (WRF) model against data. Statistical analysis was performed for each model level and time of radiosounding, as well as for some integral characteristics within the boundary layer. The vertical profiles of relative humidity, temperature, potential temperature, and wind speed were reproduced with correlation coefficient larger than 0.8, while wind direction was poorly resolved up to 1,000 m. The performance of WRF as meteorological driver for air pollution studies was studied separately under convective conditions at afternoon hours (AH, comprising 11, 13, 15, 17 LST) and under transition hours (TH, comprising 09, 11, 19 LST). WRF simulated with smaller bias most of the analysed parameters during TH compared to AH.
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