Abstract
This paper was presented as an introductory overview for the AMS Conference on High Latitude Climate Systems held on 6–8 November 1979. It discusses evidence relating events taking place in polar regions to the world climate. Mechanisms involving sea ice and polar ice sheets are reviewed and two speculative theories of the Pleistocene Ice Ages are described. Abstract This paper was presented as an introductory overview for the AMS Conference on High Latitude Climate Systems held on 6–8 November 1979. It discusses evidence relating events taking place in polar regions to the world climate. Mechanisms involving sea ice and polar ice sheets are reviewed and two speculative theories of the Pleistocene Ice Ages are described.