クウェートの油井火災によるとみられるすすの特性: 日本で採集した雪の中のちりの観察

金沢大学理工研究域地球社会基盤学系Local atmosphere reflects major or minor influences of the world environment. Fine particles of fly ash produced by combustion of fossil fuels are directly cycling in our planet by west wind. The consequences of a massive increase in the combustion of oil give the global atmospheric increase of CO2, N2O, acid gases etc. Since January, 1991 during the Gulf War, the acidity of rain and NO2 contents in the atmosphere are directly increased three hundred times as other clean countries by fossil fuel burning. The fly ash from oil combustion now makes a massive contribution to global aerosols. Snow dusts which are collected in February 20-25, 1991, at Shimane University may be related to emission of sulphur and nitrogen species of oil-derived fly ash from Kuwait by west wind 5000m high. SEM and TEM observations revealed the presence of very fine particles or thin films of sulphur species in the snow with an abundance of fine fly ash