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Extended Data Fig. 1 | Comparison of modelled and observed ice geometry.
a, Observed ice surface elevation (Bedmap2, ref.^1 ), regridded to 16 km.
Grounding lines are shown in white; surface-height contours are given every
250 m. b, Modelled ice surface elevation of the reference state serving as initial
configuration for the hysteresis experiments. Grounding lines are shown in
white; surface-height contours are given every 250 m. c, Modelled minus
observed (Bedmap2) ice surface elevation. d, Scatter plot for comparison of
modelled and observed ice thickness for each grid cell. Red identity line
illustrates where modelled ice thickness would perfectly match the
observations. RMSE, root-mean-square error.