Keywords: COST Action 732, CFD models, non-CFD models, model evaluation, MUST, idealised urban areas, computational fluid dynamics, micro-scale models, meteorological modelling, flow patterns, dispersion modelling, mock urban setting test
COST 732 in practice: the MUST model evaluation exercise
The aim of this paper is to describe the use of a general methodology tailored to the evaluation of micro-scale meteorological models applied to flow and dispersion simulations in urban areas. This methodology, developed within COST 732, has been tested through a large modelling exercise involving many groups across Europe. The major test case used is the Mock Urban Setting Test (MUST) experiment representing an idealised urban area. It is emphasised that a full model evaluation is problem-dependent and requires several activities including a statistical validation that requires a careful choice of the metrics for the comparison with measurements.