Modeling the Short-Term Effect of Traffic and Meteorology on Air Pollution in Turin with Generalized Additive Models

Figure 11

(a) Traffic volume in January, 18–24, 2005; original data in grey, policy scenario traffic volume in red. (b) NO₂ concentration in January, 18–24, 2005; measured data in black, predicted values without (blue) and with (red) traffic policy scenario.

(a)

(b)