How well do we understand Phanerozoic hyperthermals? Investigations with a climate-biogeochemical model

The Phanerozoic Eon is littered with high temperature perturbations which relate to large igneous province (LIP) volcanism. Each of these events occurred against a different climatic and biogeochemical backdrop, and had biotic effects ranging from negligible to extreme. In this talk I will cover the progress we have made with the climate-biogeochemical model SCION, which aims to reconstruct the long-term Phanerozoic climate state as well as these individual hyperthermal events. I will investigate the differences in the amount of carbon that is required to drive the events in the model, versus what is known from the geology of the LIPs themselves. I will then try to suggest solutions to these problems, which may lie in the biotic or biogeochemical responses to climate warming.