Figures & data
Figure 1. Locations of sampling points.
Table 1. Long-term (1974–2010) monthly average temperature, wind speed, and rainfall in Ankara
Figure 2. Mixing height and stability classes during winter (a) and summer (b) campaigns.
Figure 3. Number and types of vehicles passing through Akay tunnel: (a) total number of vehicles and (b) distribution of total vehicle count among vehicle types.
Table 2. Distrubition of samples among sampling segments in winter and summer study campaigns
Table 3. Median, concentrations and ranges of the most abundant 20 VOCs at residential, background, and roadside stations
Figure 4. Contributions of 20 most abundant VOCs to total VOC mass at residential, background, and roadside stations.
Table 4. Comparison of the average VOC concentrations (μg m−3) with the literature
Figure 5. Spatial distribution of VOCs in Ankara atmosphere.
Figure 6. Diurnal variation in total VOC concentrations: (a) summer and (b) winter.
Figure 7. Weekday-to-weekend ratio for selected elements calculated for the roadside, residential, and background stations.
Figure 8. Winter-to-summer concentration ratios of VOCs at (a) residential, (b) roadside, and (c) background stations.
