A Concept for the Analysis and Presentation of the Ensemble Simulation Results in the UDINEE Exercise

We propose a general concept for the analysis of the results of urban dispersion simulations of high temporal resolution, taking into account multi-model ensembles. We are motivated by theoretical considerations related both to the characteristics of the measurements and to the representation of the multi-model ensemble. Based on typical mathematical notions, we propose and present several indices, and apply them to the results of the UDINEE dispersion-modelling exercise. We demonstrate that the median model is the proper representation of the ensemble results for the presented methodology.