The models relied upon by the IPCC use the low variability solar output dataset. To make matters worse the models assume [that the climate system is in a natural state of energy balance, and that there is no long-term climate change unless humans cause it. The climate models are “tuned” to not produce natural climate change. If a 100-year run of the model produces change, the model is adjusted to removed the “drift”. The models do not produce global energy balance from “first physical principles”, because none of the processes controlling that balance are known to sufficient accuracy. Instead, the models are “fudged” to produce energy balance, based upon the modelers’ assumption of no natural climate change. Then, the models are used as “proof” that only increasing CO2 has caused recent warming.]
