ID:
publications-1771
Type:
Peer reviewed articles
Year:
2021
Authors:
Pascal Buri, EvanĀ Miles, Jakob Steiner, Silvan Ragettli, Francesca Pellicciotti
Title:
Supraglacial ice cliffs can substantially increase the mass loss of debris-covered glaciers
Venue/Journal:
Geophysical Research Letters
DOI:
10.1029/2020gl092150
Research type:
Data Management & Analytics
Water System:
Water Reuse
Technical Focus:
Abstract:
AbstractThe thinning patterns of debrisācovered glaciers in High Mountain Asia are not well understood. Here we calculate the effect of supraglacial ice cliffs on the mass balance of all glaciers in a Himalayan catchment, using a processābased ice cliff melt model. We show that ice cliffs are responsible for higher than expected thinning rates of debrisācovered glacier tongues, leading to an underestimation of their ice mass loss of 17%Ā Ā±Ā 4% in the catchment if not considered. We also show that cliffs do enhance melt where other processes would suppress it, that is, at high elevations, or where debris is thick, and that they contribute relatively more to glacier mass loss if oriented north. Our approach provides a key contribution to our understanding of the mass losses of debrisācovered glaciers, and a new quantification of their catchment wide melt and mass balance.
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772751
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