Behavior of background KOSA and its influence on the chemistry of atmospheric liquid phase and vegetation at a high elevation

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To elcidate the behavior of background Kosa and its influence on natural environment, observations and analysis of aerosol particles, trace gases, precipitation, fog and dew water and snow cover were performed at Mt. Tateyama. Background Kosa is seen every autumn at a high elevation. Vegetation may be highly affected by air pollution and Kosa particles. Atmospheric observations over Toyama Prefecture were also performed using a helicopter. Vegetation may be exposed to high photochemical oxidants at a high elevation site.