Progress toward globally complete frontal ablation estimates of marine-terminating glaciers

Kochtitzky, W.; Copland, L.; Wychen, W.V.; Hock, R.; Rounce, D.R.; Jiskoot, H.; Scambos, T.A.; Morlighem, M.; King, M.; Cha, L.; Gould, L.; Merrill, P.; Glazovsky, A.; Hugonnet, R.; Strozzi, T.; Noël, B.; Navarro, F.; Millan, R.; Dowdeswell, J.A.; Cook, A.; Dalton, A.; Khan, S.; Jania, J.

Авторы: Kochtitzky William, Copland Luke, Wychen Wesley Van, Hock Regine, Rounce David R., Jiskoot Hester, Scambos Ted A., Morlighem Mathieu, King Michalea, Cha Leo, Gould Luke, Merrill Paige-Marie, Glazovsky Andrey, Hugonnet Romain, Strozzi Tazio, Noël Brice, Navarro Francisco, Millan Romain, Dowdeswell Julian A., Cook Alison, Dalton Abigail, Khan Shfaqat, Jania Jacek
Журнал: Annals of Glaciology
Том: 63
Номер: 87-89
Год издания: 2023
Издательство: International Glaciological Society
Местоположение издательства: United Kingdom
Первая страница: 143
Последняя страница: 152
DOI: 10.1017/aog.2023.35
Аннотация: Knowledge of frontal ablation from marine-terminating glaciers (i.e., mass lost at the calving face) is critical for constraining glacier mass balance, improving projections of mass change, and identifying the processes that govern frontal mass loss. Here, we discuss the challenges involved in computing frontal ablation and the unique issues pertaining to both glaciers and ice sheets. Frontal ablation estimates require numerous datasets, including glacier terminus area change, thickness, surface velocity, density, and climatic mass balance. Observations and models of these variables have improved over the past decade, but significant gaps and regional discrepancies remain, and better quantification of temporal variability in frontal ablation is needed. Despite major advances in satellite-derived large-scale datasets, large uncertainties remain with respect to ice thickness, depth-averaged velocities, and the bulk density of glacier ice close to calving termini or grounding lines. We suggest ways in which we can move toward globally complete frontal ablation estimates, highlighting areas where we need improved datasets and increased collaboration.
Добавил в систему: Глазовский Андрей Федорович

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Progress toward globally complete frontal ablation estimates of marine-terminating glaciersстатья Исследовательская статья

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