Figure 3: Map showing the air quality downscaling modeling domain (102 × 102 km2, left) and the local domain (36 × 30 km2, right) used for population exposure assessment. The locations of present and planned road transit are indicated with solid and broken lines, respectively. The location of the urban background monitoring station is indicated with a filled circle. The colors indicate population density (number of people in 100 × 100 m2 squares). Thin black lines are roads. White and grey areas indicate water and land.