抄録
During the period from July 27 to August 3, 1993, an intensive observation was performed at the summit of Mt. Fuji (3,776 m) and at Tarobo JMA shelter, 1,300 high on the southern slope. Aerosol, gases, and precipitation samples were obtained for chemical analyses. During this observation period, typhoon (9306) passed Honshu Island. The concentration of sulfate ion in the aerosol at the summit abruptly increased after the typhoon. The change of the concentrations of other chemical species, such as ammonium, nitrate and calcium, was less pronounced in the same aerosol samples. The concentrations of sulfur dioxide gas and hydrogen chloride gas were low with less pronounced change throughout this period, while the concentration of ammonia gas showed diurnal change, high during the day time and low at night, indicating some effect of mountain climber. On the other hand, concentration of the surface ozone showed similar tendency as sulfate ion in the aerosol. Meteorological data suggest an air mass from the west which advected after the typhoon was responsible for the high concentration of sulfate in the aerosol and the ozone.
