Advances in data availability to constrain and evaluate frontal ablation of ice-dynamical models of Greenland's tidewater peripheral glaciers

We revise and evaluate frontal ablation fluxes obtained by the Open Global Glacier Model (OGGM) for Greenland's tidewater peripheral glaciers de-coupled from the ice sheet. By making use of new region-wide ice thickness and solid ice discharge data, we re-evaluate model performance and suggest...

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Bibliographic Details
Published in:Annals of Glaciology
Main Authors: Beatriz Recinos, Fabien Maussion, Ben Marzeion
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press 2022
Subjects:
Arctic glaciology
calving
glacier discharge
glacier modeling
ice/ocean interactions
Meteorology. Climatology
QC851-999
Arctic
Annals of Glaciology
Ice Sheet
Tidewater
Online Access:https://doi.org/10.1017/aog.2023.11
https://doaj.org/article/62ba7fbdb5be4a409b24128506425b40
Description
Summary:We revise and evaluate frontal ablation fluxes obtained by the Open Global Glacier Model (OGGM) for Greenland's tidewater peripheral glaciers de-coupled from the ice sheet. By making use of new region-wide ice thickness and solid ice discharge data, we re-evaluate model performance and suggest future research directions to improve the ice thickness estimation of glacier models. OGGM is unable to predict individual tidewater glacier dynamics well if it has to rely only on surface mass balance estimates and the assumption of a closed budget to constrain the calving parameterization. Velocity observations are essential to constrain the model and estimate the dynamic mass loss of Greenland's tidewater peripheral glaciers.

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