Proxy-model ∆MAT comparison after scaling  he pCO2 forcing to achieve best fit to the magnitude of cooling in the proxy MATs, b) Proxy-model ∆SST comparison after scaling the pCO2 forcing to achieve best fit to the magnitude of cooling in the proxy SSTs. In the Oligocene run the catchment is restricted for Prydz Bay and the Ross Sea on the basis of ice expansion reducing the effective catchment area. The grey area in the Eocene timeslice identifies the separate source regions used in Prydz Bay based on the proxy type.  In the Oligocene run the catchment is restricted on the basis of ice expansion reducing the effective catchment area. In the Oligocene-Eocene panel the grey panel represents the Eocene area used for Prydz Bay while the line for source region corresponds to proxy sourcing areas for the Oligocene.