Optika Atmosfery i Okeana Journal

Vol. 31, issue 01, article # 3

Zayakhanov A. S., Zhamsueva G. S., Sungrapova I. P., Tsydypov V. V. Features of diurnal variability of ultrafine aerosol in the atmosphere of the coastal zone of Lake Baikal and the arid zone of Mongolia. // Optika Atmosfery i Okeana. 2018. V. 31. No. 01. P. 17–23. DOI: 10.15372/AOO20180103 [in Russian].
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Abstract:

The results of experimental study of ultrafine aerosol characteristics in the Baikal region and Gobi Desert are presented. The comparative analysis of the dispersion composition of atmospheric aerosol in different climate conditions is carried out. It is ascertained that the total content of ultrafine aerosol in the atmosphere of Gobi Desert is significantly lower than in the Baikal atmosphere. In the arid atmosphere, the soil aerosol prevails in the particle size distribution, while in the Lake Baikal region nanometer-size aerosols are additionally represented, which are mainly of anthropogenic and organic origin. Two peaks in the ultrafine aerosol concentration are observed in the daytime and evening hours on the daily curve of the total number concentration. In the morning and daytime hours, the number of nucleation-mode particles increases due to strengthening of breeze circulation, which transports anthropogenic impurities from the lake, and activation of photochemical reactions.

Keywords:

atmosphere, ultrafine aerosol, nucleation mode, Aitken mode

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