Application of a seasonal climate model to Cenozoic glaciation.
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A new two-dimensional energy balance model is described. By examining the changes in the seasonal cycle when external perturbations are forced upon the climate system, it is possible to construct hypotheses about the origin of mid-latitude ice sheets and polar ice caps. In particular, the model predicts a rather sudden potential for glaciation over large areas when the earth's orbital elements are only slightly altered. Similarly, the drift of continents or the change of atmospheric carbon dioxide over geological time can induce radical changes in continental ice cover. -from Authors
