Fig. 4

Climatographs at the palaeo-location of the Sydney Basin. Based on simulations using the CCSM3 for the PTB⁵⁵. a Simulation with 4× the pre-industrial CO₂, level, b simulation with 12.7× the pre-industrial CO₂ level, and c simulation with 12.7× the pre-industrial CO₂ level and a lower cloud optical depth