Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers

Abstract We calibrate the calving parameterisation implemented in Open Global Glacier Model via two methods (velocity constraint and surface mass balance (SMB) constraint) assess impact of accounting for frontal ablation on ice volume estimate Greenland tidewater peripheral glaciers (PGs). an average regional flux 7.38±3.45 Gta −1 after calibrating model with different satellite velocity products, 0.69±0.49 if is constrained using fluxes derived from independent modelled SMB averaged over equilibrium reference period (1961–90). This second method makes assumption that most PGs during time have between gain loss ablation. serves as a basis to order magnitude dynamic when compared imbalance. The differences results both indicate how strong imbalance might been period. Including increases estimated PGs, 14.47 14.64±0.12 mm sea level equivalent 15.84±0.32 method.