抄録
Blowing snow is highly significant for both engineering and climatological reasons. In this presentation, firstly, a systematic measurement of blowing snow conducted at Mizuho station, Antarctica is introduced. A blowing snow observation system including snow particle counters (SPC) which can sense not only the number of snow particles but also their diameters, was situated on a 30 m tower. All instruments worked properly and the data obtained revealed profiles of mass flux and particle size distributions as a function of the friction velocity. Measurements were compared with the computations by means of a numerical blowing snow model which incorporated aerodynamic entrainment, grain/bed collision, wind modification, particle size distribution and turbulent fluctuations on the particle trajectories.
