Characteristics of aerosol distribution and composition in the South-East of Crimea in spring 2020
M.S. Artamonova1, M.A. Iordanskii1, O.G. Chkhetian1, L.O. Maksimenkov1, V.A. Lapchenko2
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences,В Moscow, Russia
2T.I. Vyazemsky Karadag scientific station – nature reserve RAN,В Feodosiya, AR Crime
Keywords: Crimea, ground-level aerosol, mass concentration, particle size distribution function, elemental composition of soil and aerosol, meteorological conditions
Abstract
The results of experimental studies of aerosol in the surface air layer in the southeastern part of the Crimean Peninsula at the background environmental monitoring station of the Vyazemsky Karadag scientific station from March 21 to June 17, 2020, are presented. The daily average mass concentration over aerosol for the entire measurement period ranged from 3 to 35 mg/m3, with an average value of 13 mg/m3. The exception was high concentrations of particles during the episode of 25–27.03.2020 (48, 195, and 49 mg/m3), when a extreme eastward transfer from sources in Kazakhstan (a dust storm on the Aral Sea) through Kalmykia to the Crimea took place. Taking into account this episode, the daily average aerosol mass concentration was 16 mg/m3. Days with different directions of air masses arrival, as well as days with the highest daily mean values of aerosol mass concentration were identified out of 89 observation days. For this sample (31 samples), the content of 64 chemical elements was determined in the samples. Accumulation of chemical elements in soil and in aerosol particles was estimated; clarks of chemical element concentrations in soil, aerosol concentration coefficients, and enrichment coefficients of chemical elements in aerosols were calculated. The dependences of the mass concentration and disperse and elemental composition of the surface aerosol on further aerosol migration are considered.
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