Abstract
The variability of medium-size surface aerosol particles with radii of 0.3–0.6 μm during winter-spring transitions is studied in the experiments carried out at the Aerosol monitoring station of the Laboratory of Aerosol Optics of the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences in 2009–2013. Time variations in the aerosol extinction coefficient in the spectral range 0.50–3.9 μm measured along a surface horizontal path is analyzed, as well as the size distribution function in the range 0.2–5.0 μm measured using a PKGTA photoelectric counter at one end of the path. A correlation between the variations in medium-size aerosol concentration and fine aerosol condensation activity is studied. The experimental spectral extinction coefficients are compared with those calculated by the Mie theory for the approximated size distributions.
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