ANALYSIS OF THE STATISTICAL STRUCTURE OF LONG-TERM VARIATIONS IN TOTAL OZONE FIELDS DERIVED FROM THE GROUND-BASED OZONOMETRIC NETWORK

An empirical-statistical model of climatic changes in total ozone over the Northern and Southern hemispheres was developed on the basis of d ata of the global ground-based ozonometric network. Modeling was imple mented with allowance made for very long-term variations (trends) in t otal ozone, as well as regular and quasi-regular total ozone oscillati ons of different periods, such as annual, quasi-biennial, 11-year, and 8-year oscillations. Optimal model parameters were selected from an a nalytical description of global spacetime variations in total ozone. T he random errors of model fits and its components were estimated.