Abstract: This paper describes a nonhydrostatic and full-elastic meso-β scale model including the effects of topography. By use of the two-dimensional version of this model the topographic clouds have been simulated. The results of simulation indicate that: not only the formation and evolution of topographic cloud but also various phenomena of airflow over mountain, such as foehn wind, dowuslope wind and "hydraulic jump" named in hydraulics, have been well reappeared.

Key words: mesoscale numerical model, nonhydrostatic, full elastic, topographic cloud, phenomena of airflow over mountain