ICON-ART is a state-of-the-art global atmospheric model that encompasses the physics, dynamics, and chemical composition of the atmosphere.
ICON is a global weather as well as climate model from the DWD, ART as a sub-module models aersoloe and reactive trace gases including emissions, transport, gas phases and dynamics in tropo- and stratosphere developed at the Karlsruhe Institute of Technology (KIT).
The software has restricted access for the community.
More information and references about ICON-ART here on the DWD and here on the KIT website.
If you want to get started,get in contact with the developers. Training courses on the ICON-ART model system are held annually - upcoming events: DWD website.