Abstract
The contribution to sea-level rise from shrinking glaciers and ice sheets is increasing. Observed acceleration in the rate of ice loss from Greenland and Antarctic ice sheets is a concern, particularly for the West Antarctic Ice Sheet (WAIS) where much of the ice sheet is grounded below sea level and the ice sheet’s geometric configuration might be unstable to small perturbations.
The goal of the ProSPect SciDAC partnership is to address the limitations of the DOE ice sheet and Earth system models (inadequate or missing physics, couplings, model initialization, validation and uncertainty quantification) that prevent accurate sea-level projections.
In this poster we present recent efforts in (1) model initialization performed solving an optimization problem constrained by the ice sheet flow model and observations, (2) Verification and Validation through the development of the Land Ice V&V toolkit (LIVVkit), (3) Uncertainty Quantification study obtained performing an approximated Bayesian inference problem followed by forward simulations of posterior samples.