Abstract
In Japan, there are a lot of mountains that have great slopes and they have an effect on a wind field, rainfall and snowfall. The effect is very complicated because the atmosphere is stratified. As one of the effects of the stratification, internal waves are given, and these motions cause the shear layer in front of the great and long slope in case that humidity is very low. On the contrary, if humidity is very high and cloud microphysical processes are taken into account, air releases latent heat and stratification was changed into neutral state. In this study, our purpose is to know the effect of the sin-curved mountain in front of the great and long slope, and as a result, the mountain has an effect to decline the area of snowfall.
