Abstrakt
In winter 2014, from 5.2. to 7.3., an intensive campaign was performed in Ostrava city, Czech Republic (49.81 N, 18.20 E, 270 m a.s.l.), a European air pollution hot-spot. The aim of the campaign was to assess the contribution of local and transported emissions to the enhanced particulate pollution levels.
PM10 limits have been exceeded up to 116 times in 2014 in the region (CHMI, 2014). Two measurement stations have been set up, 15 km apart, at up-wind and down-wind locations with regard to the Ostrava city-center (Fig. 1).
Aerosol particle number size distributions have been measured simultaneously at both the stations, using SMPS and APS spectrometers. Additionally, meteorological variables have been recorded, and at the down-wind station, CO, SO2, and NOx concentrations have also been recorded.
The dataset was completed with 24 hours and 120 hours backward trajectories coming to both stations every three hours during the measurement period. The trajectories were computed and analyzed using HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory) model (Draxler & Rolph, 2013), based on the NOAA-NCEP/NCAR GDAS (Global Data Assimilation System) data with 0.5o x 0.5o horizontal resolution.