Studies of variations of background aerosol content in the stratosphere over Tomsk using lidar measurements in 2018

摘要

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.