New PROTECT publication

The article “Compensating errors in inversions for subglacial bed roughness: same steady state, different dynamic response” was recently published.

This article shows that the response of the Antarctic ice sheet to global warming cannot be fully predicted from only observations of the ice-sheet surface.

The balance between the viscous flow of the ice and sliding across the bedrock is crucial, as shown by experiments with an ice-sheet model.

(a) Change in ice volume above flotation (􏰀Vaf), shown in absolute terms, as well as relative to the initial, steady-state volume. (b) Mid-stream grounding-line position (xGL) over time in the perturbed retreat simulations of experiment II. Colours indicate the perturbed parameter; line styles indicate the direction of perturbation. The unperturbed simulation is shown by the solid black line.

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