Cryosphere

Modeling Antarctic ice sheet loss

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Science  01 Feb 2019:
Vol. 363, Issue 6426, pp. 495-496
DOI: 10.1126/science.363.6426.495-f

Knowledge of the speed and scale of ice-shelf melting in Antarctica is crucial for estimates of ice sheet loss. How accurate do models need to be to capture these processes and yield useful projections of future ice sheet loss and the resulting sea level rise? To address this question, Goldberg et al. investigated how varying the seafloor topography and other characteristics of their ice and ocean models affected the results. They concluded that accurate representation of ocean physics near the grounding line (the point where the ice shelf starts to float) is crucial for achieving agreement with satellite observations. Better observational data at ice shelf grounding lines are also needed.

Geophys. Res. Lett. 10.1029/2018GL080383 (2018).

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