for scene 45 of the video " Ice Age 2050s: Certainty 1" by Rolf Witzsche
here for a larger image
The Greenland ice cores tell us
The Greenland ice cores tell us that the Ice Age itself, which cuts very deep into the negative temperatures, has many enormous fluctuations occurring within them. Some are reaching from the deepest low-level, almost instantly, to near the interglacial level, with transition times sometimes measured in just decades.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.