Fig. 8From: Meta-modeling of a simulation chain for urban air qualityTop: NRMSE (10) of the emulated \(\hbox {NO}_2\) concentration field compared to the projected solution (left) and compared to the Sirane solution (right), for parameters over the month of November 2014. Center: correlation (12) over the same set. Bottom: normalized bias (13) over the same setBack to article page