Annual variations of microphysical properties of aerosol at the station “Vostok” in 2009 and 2011
V.V. Pol’kin, Vas.V. Pol'kin, M.V. Panchenko
Keywords: концентрация аэрозоля, концентрация сажи, распределение частиц по размерам, aerosol concentration, black carbon concentration, particle size distribution
Abstract
Measurements of the atmospheric aerosol microphysical characteristics were carried out in April–December, 2009 and January–December, 2011 at the Vostok continental station in the framework of the 54th and 56th Russian Antarctic Expeditions. The instrumentation complex consisted of a modified nephelometer FAN, AZ-10 photoelectric counter and the aethalometer, designed at Institute of Atmospheric Optics. The aerosol number and mass concentrations N
a (cm
–3) and M
a (mg × m
–3), aerosol disperse composition in the particle size range d = 0.3–10 mm and the mass concentration of black carbon M
BC (mg × m
–3) were recorded with the period of 1–2 hours. Temporal variability of the measured aerosol parameters is determined. Seasonal variations of the aerosol parameters are revealed as maximal in the period from November to April and minimal from June to August. It is shown that seasonal differences in the disperse composition of Antarctic aerosol are observed mainly in submicrometer size range. The results obtained are compared with the data of other researchers for high-latitude regions of the Antarctic.
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