The Holy Grail of climatology has always been to ascertain whether, and if so how, the sun might affect the Earth’s energy budget to cause the climate swings observed throughout history despite the apparent inadequacy of the tiny variations in Total Solar Irradiance (TSI) that occur from one series of solar cycles to another.
I think that there is a plausible mechanism whereby those tiny solar changes could be amplified enough by natural features of the Earth’s climate system to achieve the observed outcome.
This article also shows how the theory of Anthropogenic Global Warming (AGW) has failed to account for the various real world observations that have been accumulating since the late 1990s.
The ideas set out in this article provide a potential solution and progress my earlier New Climate Model found here
to download "How The Sun Could Control Earth’s Temperature" by Stephen Wilde.