Notice when known super volcanoes occurr (purple shaded areas). They occurred mostly at times of peak global temperatures, like now.
Now Descending Into An Ice Age – October 1, 2020
https://www.iceagenow.info/now-descending-into-an-ice-age-video/#more-33049
The theory is that solar minimums reduce the solar wind and allow more cosmic rays to reach earth. Some component of them (muons IIRC) can penetrate deep enough to allegedly affect lava reservoirs. That explanation may or may not be correct, but apparently there is some correlation known between solar minimums and volcanic activity and/or quakes.