The Mesoscale and Microscale Model Family METRAS, MITRAS, MECTM, MICTM  and MESIM is called the
Multiscale Model System M-SYS. The name M-SYS has been established within the BMBF funded
project VALIUM. The first member of this model family is the model METRAS ( http://www.mi.uni-hamburg.de/Mesoscale-Mo.359.0.html)

• Meteorological Institute, Centre for Marine and Atmospheric Research, University of Hamburg, Germany

• Division of Environmental Health and Risk Management, School of Geography, Earth and Enivonmental Sciences, University of Birmingham, UK