约束和评估格陵兰岛潮汐外围冰川的冰动力模型的锋面消融数据可用性的进展

IF 2.5 4区地球科学 Q2 GEOGRAPHY, PHYSICAL

Annals of Glaciology Pub Date : 2022-09-01 DOI:10.1017/aog.2023.11

Beatriz Recinos, F. Maussion, B. Marzeion

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引用次数: 0

摘要

摘要我们对开放全球冰川模型（OGGM）获得的格陵兰潮水外围冰川与冰盖耦合的锋面消融通量进行了修正和评估。通过利用新的全区域冰厚度和固体冰流量数据，我们重新评估了模型的性能，并提出了未来的研究方向，以改进冰川模型的冰厚度估计。如果OGGM只能依靠表面质量平衡估计和封闭预算的假设来约束崩解参数化，那么它就无法很好地预测单个潮水冰川动力学。速度观测对于约束模型和估计格陵兰潮水外围冰川的动态质量损失至关重要。

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

Abstract 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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来源期刊

Annals of Glaciology GEOGRAPHY, PHYSICAL-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

8.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Annals of Glaciology publishes original scientific articles and letters in selected aspects of glaciology-the study of ice. Each issue of the Annals is thematic, focussing on a specific subject. The Council of the International Glaciological Society welcomes proposals for thematic issues from the glaciological community. Once a theme is approved, the Council appoints an Associate Chief Editor and a team of Scientific Editors to handle the submission, peer review and publication of papers.