Kravchenko V. Dynamics of the ozone layer under the influence of planetary waves and tropical anomalies

The thesis deals with the study and analysis of the dynamics and distribution of the total ozone (TOC) according to long-term groundbased and satellite measurements under the influence of processes that affect this distribution and dynamics: planetary waves in the atmosphere and thermal tropical anomalies. A detailed comparison of satellite and ground-based measurements of TOC is carried out. The influence of planetary waves on the characteristics of the ozone hole is considered. It is shown that the amplitude of quasi-stationary planetary waves at the end of winter (in August) is an indicator of the state of the ozone hole in the next spring. It has been determined that the conditions of penetration of planetary waves from the troposphere into the stratosphere, which determines the rate of further growth of dynamic disturbances in the spring, depend on the intensity of the "wave – zonal flow" interaction in August. For the first time, a source of atmospheric disturbances was discovered in the central tropical part of the Pacific Ocean, capable of reaching the Antarctic stratosphere. For the first time, the spatial characteristics of this heat source of atmospheric disturbances, the response areas in the Antarctic region, the path of propagation of the tropical signal in the atmosphere and the temporal characteristics of the maximum connection between the tropical and Antarctic regions have been determined. The penetration of the zonal circulation anomaly from the stratosphere into the troposphere in October with the simultaneous generation of the meridional wave-train of quasi-stationary planetary waves in the troposphere and lower stratosphere was found.