Fig. 4: CO2 concentrations and insolation values corresponding to mass loss events. | Nature Communications

Fig. 4: CO2 concentrations and insolation values corresponding to mass loss events.

From: Geologically constrained 2-million-year-long simulations of Antarctic Ice Sheet retreat and expansion through the Pliocene

Fig. 4

CO2 concentrations and summer insolation values corresponding to each modeled collapse event (defined as the onset of large-scale ice sheet mass loss, with rates exceeding 1 m/kyr) are compared to the range of forcing values across all model timesteps. Insolation (dt I) is reported as a January 80°S insolation anomaly from modern. a Ice sheet mass loss events are separated by East Antarctic Ice Sheet (EAIS) and West Antarctic Ice Sheet (WAIS) domains. WAIS mass loss events are characterized by the disappearance of marine-based portions of the ice sheet; EAIS mass loss events are characterized by grounding line retreat deep into EAIS marine basins. b EAIS and c WAIS mass loss events are colored by rate of change (sea-level equivalent, in cm/yr).

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