Transcript for scene 21 of the video " Cosmic Climate Change 2 From Big to Gigantc to Joy - part 1" by Rolf Witzsche - Ice Age Ahead not Global Warming  

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The Sun became dramatically weaker in the 1970s

When one looks more closely, it becomes apparent that the turn-around wasn't clean and linear. The Sun became dramatically weaker in the 1970s, according to the sunspot numbers, then recovered slightly in the 1980s and 90s, and collapsed steeply thereafter, which still continues.

On the chart presented here, the solar diminishment is measured in diminishing sunspot numbers. The diminishing numbers typically stand as a broad overview proxy for diminishing solar activity.

Unfortunately, the sunspot numbers remained as our only proxy for solar activity from the 1950s on, when the Carbon-14 values became irrelevant by the effect of the nuclear bombing and bomb testing, which also produce Carbon-14.

 

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