Articles | Volume 15, issue 7
The Cryosphere, 15, 3229–3253, 2021
The Cryosphere, 15, 3229–3253, 2021

Research article 14 Jul 2021

Research article | 14 Jul 2021

Marine ice sheet experiments with the Community Ice Sheet Model

Gunter R. Leguy et al.

Data sets

Marine Ice Sheet Experiments CISM 2021 Gunter Leguy and William Lipscomb

Model code and software

CISM grounding line and basal melt parameterization W. H. Lipscomb, G. R. Leguy, S. F. Price, M. J. Hoffman, E. Barker, T. Bocek, J. Campbell, K. J. Evans, J. G. Fyke, Heiko Goelzer, G. Granzow, M. Hagdorn, B. Hand, F. Hebeler, J. V. Johnson, I. Kalashnikova, J. H. Kennedy, E. Kluzek, J.-F. Lemieux, D. F. Martin, J. A. Nichols, R. Nong, M. R. Norman, A. J. Payne, D. M. Ranken, I. Rutt, W. J. Sacks, andA. G. Salinger, K. Thayer-Calder, J. B. White III, J. Wolfe, P. H. Worley, and T. Wylie

Short summary
We present numerical features of the Community Ice Sheet Model in representing ocean termini glaciers. Using idealized test cases, we show that applying melt in a partly grounded cell is beneficial, in contrast to recent studies. We confirm that parameterizing partly grounded cells yields accurate ice sheet representation at a grid resolution of ~2 km (arguably 4 km), allowing ice sheet simulations at a continental scale. The choice of basal friction law also influences the ice flow.