Results of the study of variability of the background aerosol content in the stratosphere over Tomsk based on the data of lidar measurements in 2011 – 2015

摘要

The experimental results on the variability of the vertical-temporal structure of the stratospheric aerosol over Tomsk,obtained at the lidar complex of the Small Lidar Station of IAO of the SB RAS in the period 2011-2015 are presented.The characteristic peculiarity of this period, except of the second half of 2011, (appearance of the eruptive layers of theGrimsvotn volcano eruption over Tomsk) was practical absence of volcanic activity leading to the formation ofstratospheric aerosol and its transfer to Tomsk, and therefore it became possible to study the behavior of the verticalstructure of the background aerosol in the stratosphere during five years. According to the analysis of the lidar dataobtained, a stable trend of aerosol filling of the lower stratosphere during the cold season with its maximum content inDecember-January and a practical absence of aerosol in the entire stratosphere layer during the warm season wasrevealed.