Air Pollution Observed at the Marishiten Peak (Elevation 2872m) in Mt. Norikura

Abstract

From airplanes, we find a black mist that diffuses in upper layer of the troposphere, and discover cumulus wrapped around dark fog. They indicate contamination of the upper atmosphere layer. We recognize the fact from 2007.To research the air pollution, we observed scattering light of the atmosphere on Marishiten peak 2872 m in Mt. Norikura, from September 14 to 15 2011. We conclude that the atmosphere over 3 km is still clean; however, a black mist layer spreads in the free atmosphere gradually. We believe that it is a pre-signal of the long distance movement of air-pollution.