Articles | Volume 17, issue 1
https://doi.org/10.5194/tc-17-1-2023
https://doi.org/10.5194/tc-17-1-2023
Research article
 | 
05 Jan 2023
Research article |  | 05 Jan 2023

Weekly to monthly terminus variability of Greenland's marine-terminating outlet glaciers

Taryn E. Black and Ian Joughin

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Cited articles

Bevan, S. L., Luckman, A. J., and Murray, T.: Glacier dynamics over the last quarter of a century at Helheim, Kangerdlugssuaq and 14 other major Greenland outlet glaciers, The Cryosphere, 6, 923–937, https://doi.org/10.5194/tc-6-923-2012, 2012. 
Bevan, S. L., Luckman, A. J., Benn, D. I., Cowton, T., and Todd, J.: Impact of warming shelf waters on ice mélange and terminus retreat at a large SE Greenland glacier, The Cryosphere, 13, 2303–2315, https://doi.org/10.5194/tc-13-2303-2019, 2019. 
Black, T.: tarynblack/greenland_terminus_seasonality: v1.0, Zenodo [code], https://doi.org/10.5281/zenodo.7434896, 2022. 
Black, T. and Joughin, I.: MEaSUREs Weekly-To-Monthly Greenland Outlet Glacier Terminus Positions From Sentinel-1 Mosaics, Version 1, NASA National Snow and Ice Data Center Distributed Active Archive Center [data set], https://doi.org/10.5067/DGBOSSIULSTD​​​​​​​, 2022a. 
Black, T. E. and Joughin, I.: Multi-decadal retreat of marine-terminating outlet glaciers in northwest and central-west Greenland, The Cryosphere, 16, 807–824, https://doi.org/10.5194/tc-16-807-2022, 2022b. 
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Short summary
The frontal positions of most ice-sheet-based glaciers in Greenland vary seasonally. On average, these glaciers begin retreating in May and begin advancing in October, and the difference between their most advanced and most retreated positions is 220 m. The timing may be related to the timing of melt on the ice sheet, and the seasonal length variation may be related to glacier speed. These seasonal variations can affect glacier behavior and, consequently, how much ice is lost from the ice sheet.