Home – Home – Jornals – Atmospheric and Oceanic Optics 2017 number 7

Data on the variability of vertical and temporal aerosol structures in the stratosphere over Tomsk received during experiments at the lidar station for high-altitude atmosphere sounding of Institute of Atmospheric Optics SB RAS carried out in 2011-2015 are described. As in the previous studies, the emphasis is placed on disturbances of the aerosol components in the stratosphere due to volcanic eruptions and on identification of peculiarities in the intra-annual variability of the stratospheric aerosol content. A feature of that period, except for the second half of 2011 (the appearance of eruptive layers from the Grimsvotn volcano eruption over Tomsk), was near absence of volcanic activity, which leads to the formation of stratospheric aerosol and its transfer toward Tomsk; this allows the study of the behavior of the vertical structure of the background aerosol in the stratosphere during the five years. The analysis of the lidar data shows a steady trend of aerosol filling of the lower stratosphere during cold seasons, with the aerosol content maximum in December-January, and near absence in warm seasons throughout the stratosphere.