Boston University researchers have developed a new model of ice volume change. This model, like other models, is consistent with traditional Milankovitch theory. According to the theory, the the Earth’s orbit’s three cyclical changes around the Sun (obliquity, precession, and eccentricity) effects or influence the seasons’ severity along with temperatures at high latitude over time.
But, the new model is different from the others form the point that it allows for a much more dynamic Antarctic ice sheet. The new model proposes that from 3 million years ago to about 0.8 million years ago, ice volume changed in both the Northern Hemisphere and Antarctica. And, each of these was controlled by different amounts of local summer insolation, which was paced by precession.
Via: Eurekalert
