Large-scale Numerical Model of Antarctic Sea Ice Extent Variations

A. N. Chetyrbotskii

Data on sampling long-term monthly mean distributions of Antarctic sea ice extent are ana- lyzed for the period of 1974–2013. In the framework of propositions on the nature of variations in the components of limited-area system, the numerical model of sea ice extent dynamics was developed. It is demonstrated that in 1974–2013 the variations in monthly mean sea ice extent were defined by semian- nual, annual, 30-year, and 60-year periodic components. The interpolation of the obtained results is presented. The forecast of Antarctic sea ice conditions for 2015–2135 is given.