INTRASECULAR VARIABILITY OF CLIMATE AND SEA ICE EXTENT IN EURASIAN ARCTIC SEAS AND THEIR POSSIBLE CAUSES

摘要

Intrasecular climatic changes in the ice cover of Eurasian Arctic seas and in some other characteristics of the Earth's climate are considered. The changes have a polycyclic nature with the most distinct cycles of duration about 10, 20-25, and 55-60 years occurring against the background of longer periods. Possible natural causes for these changes are analyzed. It is shown that the cause of the most energy-consuming 60-year cycle is solar oscillations induced by a change in the difference between the Earth and Sun due to the dissymmetry resulting from the motion of three celestial bodies: the Sun, Jupiter, and Saturn. The influence of the anthropogenic accumulation of greenhouse gases in the atmosphere, which is taken into account in coupled ocean-atmosphere models, plays a secondary role as it does not explain the major features of the realistic changes in the Earth's climate.