Using a dynamical approach for implementing ammonia emissions into WRF-chem over Europe

Abstract

This paper presents the influence of an emission approach applied (fixed and dynamical) on calculated ammonia concentration and model performance. We simulated with the WRF-Chem model a winter (January) and an early spring period (March) of 2012 for the entire Europe. Regardless of a relatively coarse resolution (36 km × 36 km) of the WRF-Chem simulations and the Europe-wide default settings applied in the dynamic ammonia model, the modelled concentrations are improved significantly by applying a dynamical emission instead of using a fixed emission profile.