Abstract

Accurate assessment of air quality in urban environments, important for the health of many people, can be challenging. A relatively new development in the assessment is the use of numerical Large-Eddy Simulations. In the project discussed here, the Dutch Atmospheric Large-Eddy Simulation (DALES) model is used to calculate the concentrations due to traffic in street canyons. The DALES model can simulate the concentration at a high temporal and spatial resolution and was successfully used by us to model the flow and concentrations in a street canyon. The results of the calculations are quite similar to measurements found in literature. Some differences are observed and discussed in our analyses.