A Note on Using the Non-hydrostatic Model AROME as a Driver for the MATCH Model

Non-hydrostatic weather data provide a challenge to off-line atmospheric chemistry and transport models concerning mass consistent transport that is essential especially for non-linear chemistry. The problem is well illustrated for the Multiple-scale Atmospheric Transport and CHemistry (MATCH) model where an initialization procedure of input meteorological data is proven necessary to ensure mass consistent transport. However, the initialization procedure used is based on hydrostatic assumption, and a question rises if the initialization deteriorates the non-hydrostatic information. We conclude that the initialization is necessary for non-hydrostatic, and corrections are of the same magnitude as for hydrostatic data and do not corrupt non-hydrostatic flow patterns.