Annual and seasonal variations in the filling of the stratosphere with a background aerosol in Western Siberia

In this paper we analyze the experimental data on variations in vertical-temporal structure of aerosol and its integrated content in the stratosphere, obtained using lidar complex at the Station of High-Altitude Sensing in Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences for 2018 also, we present certain comparisons with previous measurements in 2016-2017. A dataset of 61 total signals, accumulated on separate nights, was used as initial information for analysis. Sensing covered the altitude range from 10 to 50-60 km, the spatial resolution was 192 m, and the total signal was accumulated for 2 hours. As in previous years, the observations recorded the high aerosol content in the lower stratosphere during winter months and almost no aerosol in warm period. In the upper stratosphere (30 50 km) background aerosol is absent throughout the year.