[PapaBear3625]

It also appears that volcanic activity has increased over the past few months. Increased volcanic activity, if it puts enough extra sulfur dioxide into the atmosphere, can cause global cooling. Increased volcanic activity was known to precede some of the colder spikes during the Maunder Minimum, and there was generally increased volcanic activity during the Minimum.

Sunspot levels can serve as an indirect indicator of the strength of the solar magnetic field. I'm wondering if there could be some coupling mechanism involving interactions between the solar magnetic field and Earth's magnetic field which could have effects on the Earth's core? Any real physicists around who could chime in?

[familyop]

"Sunspot levels can serve as an indirect indicator of the strength of the solar magnetic field. I'm wondering if there could be some coupling mechanism involving interactions between the solar magnetic field and Earth's magnetic field which could have effects on the Earth's core? Any real physicists around who could chime in?"

Thanks for asking that excellent question.