Fig. 2From: Meta-modeling of a simulation chain for urban air qualitySimulations over Clermont-Ferrand on 18/11/2014 at 8 a.m. Traffic flow in veh/h/link (left), \(\hbox {NO}_2\) emissions in \({\hbox {g\,km}^{-1}}\)\({\hbox {s}^{-1}}\) (center), \(\hbox {NO}_2\) concentration \({\upmu \hbox {g\,m}^{-3}}\) (right). A75 and A89 are large highways in the domainBack to article page