Based on the criticisms I’ve seen, the melting ice / volcanism theory isn’t true. That result didn’t pop out of existing climate models, it was an effect they

Based on the criticisms I’ve seen, the melting ice / volcanism theory isn’t true. That result didn’t pop out of existing climate models, it was an effect they explicitly made a domain specific model to look for. This is how most climate models are made - bespoke models for a small application using other global models as boundary conditions. https://ui.adsabs.harvard.edu/abs/2009AGUFM.G53B0673L/abstract https://ui.adsabs.harvard.edu/abs/2009AGUFM.G53B0673L/abstra...