A Wind Speed Dependence on the Sea-salt Concentration in Acid Snowfall at the Coastal Area in Northern Japan

A field experiment for snowfall at the coastal area in northern Japan was performed, and chemical components in snow were analyzed. When the synoptic weather pattern is a high pressure in the west and a low pressure in the east of Japan (WH&EL), it is influenced that the sea-salt concentration in the snow was in proportion to the squares of the wind speed at the sampling site. This relationship offers that the amount of sea-salt aerosol supplied from sea surface to air mass and finally to the snow depends strongly on the squares of the friction speed on the sea surface and of the wind speed at the snowfall site.