for scene 20 of the video " The Ice Age: 6-in-1 Flank" by Rolf Witzsche - Ice Age Ahead not Global
here for a larger image
That this diminishing trend reflects the Sun itself
That this diminishing trend reflects the Sun itself, is well evident when one compares the ice core climate record with measurable proxies that represent solar activity.
We have three such proxies. One is measured in ratios of the Carbon-14 isotope in historic samples.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.