This paper describes the results obtained from numerical experiments of winter land and sea breezes on the Sagami Plain in Japan. Three kinds of experiments were conducted in order to investigate the relations between the local circulation and topography.
The no-mountain model results showed that a bay or a peninsula near a straight coast line has little effect on the local circulation. However, the topography model showed that mountains play an important role in these local circulations. The numerical simulations of winter breezes in the Sagami Plain seems reasonable when compared with observations, although there remained some differences between the observed and simulated wind regimes.