Analysis of regional differences of forecasts with the multi-layer AMT-model in the Netherlands

The research of predicting regional differences in atmospheric boundary layer parameters with the multilayers AMT (Air Mass Transformation) model is described. The results are compared with the model output of the European Center for Medium Range Weather Forecasts (ECMWF) numerical weather prediction. The background of this research is given. Three case studies are discussed and an objective comparison is given. The ATT model is able to predict regional differences in Atmospheric Boundary Layer parameters but it has the same skill as the ECMWF model. Nevertheless the AMT model is a useful tool, which will give the forecaster a quick indication if regional differences will occur in the next 12 hours.