Yes. We're talking about studies into volcanic activity's effect on historic solar irradiance that cross validate tree ring growth rate models of ancient fossil

Yes. We're talking about studies into volcanic activity's effect on historic solar irradiance that cross validate tree ring growth rate models of ancient fossilized trees both in turn validated by extensive data on global geological strata that the global resource extraction industry relies on to efficiently prospect for fossil fuels and minerals. We've talking about large swings in CO2/O2 and temperature in our geological and fossil record that changed the face of the planet many times over, which is why we know this current swing is far out of the ordinary. The reason we are so certain is that hundreds of years of solar irradiance data of increasing precision and a vast web of 2nd order data providing historical estimates demonstrate that the Earth's temperature and the sun's energy output have been decoupling (aka becoming less correlated) at an accelerating rate, starting with the industrial revolution. Instead the variance has become increasingly correlated with our environmental conditions, aka the presence of green house gasses and albedo.