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Dynamics of Ice Shelf – Ocean Interaction: Evaluation of Marine Ice Sheet Instability

Dynamics of Ice Shelf – Ocean Interaction: Evaluation of Marine Ice Sheet Instability. Personnel: W. Lipscomb, M. Maltrud , S. Price, T. Ringler (LANL) Collaborators: David Holland, Carl Gladish (NYU)

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Dynamics of Ice Shelf – Ocean Interaction: Evaluation of Marine Ice Sheet Instability

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  1. Dynamics of Ice Shelf – Ocean Interaction: Evaluation of Marine Ice Sheet Instability • Personnel: W. Lipscomb, M. Maltrud, S. Price, T. Ringler (LANL) • Collaborators: David Holland, Carl Gladish (NYU) • Goal:Develop and apply a high-resolution, regional, coupled ice-sheet/ice-shelf/ocean model to assess the stability of the West Antarctic Ice Sheet. • Progress: • We have developed an ice-sheet/shelf model with higher-order stresses and a dynamic grounding line. The model is being validated for idealized geometries. • We have written a coupler that computes exchange of mass and heat with the ocean, given the mixed-layer temperature and salinity. • Development of the HYPOP ocean model has been proceeding in parallel; the next step is to modify HYPOP to simulate sub-ice-shelf circulation. Diagnostic shelf velocity compared to benchmark Snapshots of ice thickness and velocity (Ice shelf forced by ocean and run to steady state)

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