A Method for Numerical Forecast of the Distribution of Snowfall in the Ishikari Plain

A method for numerical forcast of the distribution of snowfall in the Ishikari Plain is described in this paper. The snow cloud which is formed by the vigorous supply of latent and sensible heats of water of the Japan Sea is simulated under the one dimensional diffusion model. The initial and boundary conditions used in this model are the air temperature and relative humidity of the Siberian Con-tinent, and the sea water temperature of the Japan Sea. The obtained cloud is represented by the distribution of liquid water content and air temperature. The snowfall amount on the Ishikari Plain is calculated by the liquid water content taking account of the size distribution of the precipitation elements among the cloud. A computed distribution of the precipitation intensity over the Ishikari Plain is generally similar to the observed distribution. The present method may be useful to the forecasting of the snowfall distribution from winter monsoon clouds over the Ishikari Plain, in spite that the model is one dimensional. 1

Frictional Electrification of Ice and Change in Its Contact Surface

International Conference on Low Temperature Science. I. Conference on Physics of Snow and Ice, II. Conference on Cryobiology. (August, 14-19, 1966, Sapporo, Japan