Maybe there was a Maunder Minimum and may be it was only the result of some missing data. Willis Eschenbach, does the analysis.
Guest Post by Willis Eschenbach
Well, as often happens I started out in one direction and then I got sidetractored … I wanted to respond to Michele Casati’s claim in the comments of my last post. His claim was that if we include the Maunder Minimum in the 1600’s, it’s clear that volcanoes with a VEI greater or equal to 5 are affected by sunspots. Based on my previous analysis I figured “No way!”, but I thought I should take a look … and as is often the case, I ended up studying something entirely different.
Now, the SIDC monthly sunspot record that I used in my last analysis starts in 1700. Prior to that the only sunspot numbers available are a “reconstruction” by Hoyt and Schatten called the “Group Sunspot Number”, which is the dataset used by Michele. The Hoyt/Schatten Group sunspot data is available here. Now, as…
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