Transcript for scene 47 of the video " Ice Age 2050s: Certainty 1" by Rolf Witzsche  

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Large fluctuations do not show up in Antarctica

Essentially the same fluctuation were measured there, as were measured at the more southern site. The fact that the large fluctuations do not show up in Antarctica, may be due to the fact that Antarctica is essentially an ice desert that gets not enough accumulation to preserve the fine details. 

It is evidently for this reason, too, that the Antarctic ice is sampled for changing ratios of deuterium in the ice, which is a heavy isotope of hydrogen, while in the 'wetter' Greenland the ratio of the heavy isotope of oxygen, named oxigen-18, is measured. These differences too, affect the details that can be observed.

 

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Published by Cygni Communications Ltd. North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F. Witzsche