This project makes use of advanced high-resolution models of the atmosphere to simulate weather and atmospheric composition in The Netherlands during measurement campaigns of the Ruisdael Observatory. The measurements of this large-scale measurement infrastructure in The Netherlands offer a unique opportunity to test these models, and to acquire novel insight into the atmospheric processes governing the weather and air quality in The Netherlands. This knowledge is needed for a more detailed weather prediction, for example of extreme weather, improved forecasting of urban air quality, and monitoring of the greenhouse gas emission reductions that are planned for the coming decades.