Abstract
In this study, we conducted a field observation of drifting snow in the snowfield of Teshikaga in Hokkaido for two months and used the regional meteorological model WRF in order to reveal fluctuation of visibility distribution for increased snow-drift flux due to turbulent fluctuation under blowing snow without snowfall. The estimated 10-minute mean visibilities were agreed fairy well with the measured value with the transmissometer at the observation site. It was indicated that the visibility decreased especially near the outlet of the valley in Teshikaga, and the minimum of 1-minute mean visibility decreased by 70% compared to the 10-minute mean visibilities due to turbulence fluctuation.
