The influence of dynamic processes on variations in the stratospheric ozone content over Obninsk in 2013-2025
V.A. Korshunov, D.G. Sakhibgareev, V.P. Ustinov
Russian Federal Service on Hydrometeorology and Environmental Monitoring Research and Production Association «Typhoon», Obninsk, Russia
Keywords: ozone layer, stratosphere, polar stratospheric vortex, dynamic processes, lidar sensing, satellite measurements
Abstract
The stratospheric ozone layer plays a vital role in protecting the Earth's biosphere from the harmful effects of the ultraviolet solar radiation. Therefore, monitoring the state of the ozone layer in specific regions of the Earth and studying its changes under the influence of various factors are urgent tasks. This paper analyzes the influence of atmospheric dynamic processes on the ozone content in the layer from 12 to 35 km above Obninsk (55° N) using lidar and satellite measurement data from 2012 to 2025. It was established that, during the period from January to March, a significant factor in intraseasonal variations in the ozone content in the middle stratosphere (20-35 km) is the shift of the polar stratospheric vortex. In the lower stratosphere (12-20 km), ozone variations are caused by changes in the direction of meridional advection. Interannual variations in February ozone levels correlate with quasi-biennial variations in equatorial winds and solar activity. The effects of these factors on stratospheric ozone levels are assessed. The results can be useful in developing numerical models of the ozone layer and predicting its future changes under the climate change.
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