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Table 3 Statistical scores of the meta-model approximation results compared to the scores of the model chain using the full air quality model

From: Meta-modeling of a simulation chain for urban air quality

State estimation  
\(c({\mathbf {p}})\) vs. \({\hat{c}}({\mathbf {p}})\) Statistical scores over 1-month simulations
Over the full grid MNRMSE (14) \(\sqrt{\text {NMSE}}\) (11) Correlation (12)
Meta-model vs. full model chain 0.274 0.25 0.93
At receptor locations NRMSE (10) \(\sqrt{\text {NMSE}}\) (11) Correlation (12)
Meta-model vs. full model chain 0.22 0.18 0.96