Articles | Volume 16, issue 5
The Cryosphere, 16, 1697–1718, 2022
https://doi.org/10.5194/tc-16-1697-2022
The Cryosphere, 16, 1697–1718, 2022
https://doi.org/10.5194/tc-16-1697-2022
Research article
06 May 2022
Research article | 06 May 2022

Modelling supraglacial debris-cover evolution from the single-glacier to the regional scale: an application to High Mountain Asia

Loris Compagno et al.

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Cited articles

Anderson, L. S. and Anderson, R. S.: Modeling debris-covered glaciers: response to steady debris deposition, The Cryosphere, 10, 1105–1124, https://doi.org/10.5194/tc-10-1105-2016, 2016. a, b, c, d, e
Anderson, L. S., Armstrong, W. H., Anderson, R. S., and Buri, P.: Debris cover and the thinning of Kennicott Glacier, Alaska: in situ measurements, automated ice cliff delineation and distributed melt estimates, The Cryosphere, 15, 265–282, https://doi.org/10.5194/tc-15-265-2021, 2021a. a, b
Anderson, L. S., Armstrong, W. H., Anderson, R. S., Scherler, D., and Petersen, E.: The causes of debris-covered glacier thinning: Evidence for the Importance of ice dynamics from Kennicott Glacier, Alaska, Front. Earth Sci., 9, 680995, https://doi.org/10.3389/feart.2021.680995, 2021b. a, b, c, d, e
Anderson, R. S.: A model of ablation-dominated medial moraines and the generation of debris-mantled glacier snouts, J. Glaciol., 46, 459–469, https://doi.org/10.3189/172756500781833025, 2000. a, b, c
Benn, D., Bolch, T., Hands, K., Gulley, J., Luckman, A., Nicholson, L., Quincey, D., Thompson, S., Toumi, R., and Wiseman, S.: Response of debris-covered glaciers in the Mount Everest region to recent warming, and implications for outburst flood hazards, Earth-Sci. Rev., 114, 156–174, https://doi.org/10.1016/j.earscirev.2012.03.008, 2012. a
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We present a new approach for modelling debris area and thickness evolution. We implement the module into a combined mass-balance ice-flow model, and we apply it using different climate scenarios to project the future evolution of all glaciers in High Mountain Asia. We show that glacier geometry, volume, and flow velocity evolve differently when modelling explicitly debris cover compared to glacier evolution without the debris-cover module, demonstrating the importance of accounting for debris.