Abstract
Atmospheric aerosols have been measured in Finnish Lapland from January 1992 to June 1994. A seasonal cycle in particle number concentration, measured using a condensation particle counter, is observed. Aerosol samples have been collected by a virtual impactor (VI) in two size ranges. The filters have been changed every 48 hours. Most fine particle samples are acidic: 91% of the measured anions (neq/m3) to measured cations (neq/m3) ratios are above one. According to a trajectory statistical analysis, high sulphate concentrations come to Finnish Lapland from all of continental Europe. The source areas of the highest observed ammonium concentrations are in Western Europe.
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Virkkula, A., Mäkinen, M., Hillamo, R. et al. Atmospheric aerosol in the finnish arctic: Particle number concentrations, chemical characteristics, and source analysis. Water Air Soil Pollut 85, 1997–2002 (1995). https://doi.org/10.1007/BF01186127
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DOI: https://doi.org/10.1007/BF01186127