Climate is much less chaotic than weather, as it is about long-term and long-range averages; the quality of climate models can be judged by feeding them histori

Climate is much less chaotic than weather, as it is about long-term and long-range averages; the quality of climate models can be judged by feeding them historic inputs (such as the amount of anthropogenic greenhouse emissions) and comparing their outputs for the years until 2020 with the actual record. Even simple climate models are substantially better than random guesses.