for scene 15 of the video " Cosmic Climate Change 2 From Big to Gigantc to Joy - part 1" by Rolf Witzsche - Ice Age Ahead not Global
here for a larger image
The Carbon-14 ratios stand as proxy to measure the solar activity
More of the fine details for the last thousand years, came to light through measurements of Carbon-14 ratios, gleamed from samples from these times. The Carbon-14 ratios stand as proxy, with which we are able to measure the solar activity at the time the sample was created. The measurements prove that the gradual climate collapse that occurred during this period, including that of the Little Ice Age from the 1300's till the end of the Maunder Minimum, was the direct result of the diminishing strength of solar activity.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.