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Université de Fribourg

The firn meltwater retention model intercomparison project (retmip) : evaluation of nine firn models at four weather station sites on the greenland ice sheet

Vandecrux, Baptiste ; Mottram, Ruth ; Langen, Peter L. ; Fausto, Robert S. ; Olesen, Martin ; Stevens, C. Max ; Verjans, Vincent ; Leeson, Amber ; Ligtenberg, Stefan ; Munneke, Peter Kuipers ; Marchenko, Sergey ; Pelt, Ward van ; Meyer, Colin R. ; Simonsen, Sebastian B. ; Heilig, Achim ; Samimi, Samira ; Marshall, Shawn ; Machguth, Horst ; MacFerrin, Michael ; Niwano, Masashi ; Miller, Olivia ; Voss, Clifford I. ; Box, Jason E.

In: The Cryosphere, 2020, vol. 14, no. 11, p. 3785-3810

Perennial snow, or firn, covers 80 % of the Greenland ice sheet and has the capacity to retain surface meltwater, influencing the ice sheet mass balance and contribution to sea-level rise. Multilayer firn models are traditionally used to simulate firn processes and estimate meltwater retention. We present, intercompare and evaluate outputs from nine firn models at four sites that represent...

Université de Fribourg

Worldwide version-controlled database of glacier thickness observations

Welty, Ethan ; Zemp, Michael ; Navarro, Francisco ; Huss, Matthias ; Fürst, Johannes J. ; Gärtner-Roer, Isabelle ; Landmann, Johannes ; Machguth, Horst ; Naegeli, Kathrin ; Andreassen, Liss M. ; Farinotti, Daniel ; Li, Huilin ; GlaThiDa Contributors

In: Earth System Science Data, 2020, vol. 12, no. 4, p. 3039–3055

Although worldwide inventories of glacier area have been coordinated internationally for several decades, a similar effort for glacier ice thicknesses was only initiated in 2013. Here, we present the third version of the Glacier Thickness Database (GlaThiDa v3), which includes 3 854 279 thickness measurements distributed over roughly 3000 glaciers worldwide. Overall, 14 % of global...

Université de Fribourg

Partitioning the uncertainty of ensemble projections of global glacier mass change

Marzeion, Ben ; Hock, Regine ; Anderson, Brian ; Bliss, Andrew ; Champollion, Nicolas ; Fujita, Koji ; Huss, Matthias ; Immerzeel, Walter W. ; Kraaijenbrink, Philip ; Malles, Jan‐Hendrik ; Maussion, Fabien ; Radić, Valentina ; Rounce, David R. ; Sakai, Akiko ; Shannon, Sarah ; Wal, Roderik ; Zekollari, Harry

In: Earth’s Future, 2020, vol. 8, no. 7, p. -

Glacier mass loss is recognized as a major contributor to current sea level rise. However, large uncertainties remain in projections of glacier mass loss on global and regional scales. We present an ensemble of 288 glacier mass and area change projections for the 21st century based on 11 glacier models using up to 10 general circulation models and four Representative Concentration Pathways...

Université de Fribourg

Reversed surface-mass-balance gradients on himalayan debris-covered glaciers inferred from remote sensing

Bisset, Rosie R. ; Dehecq, Amaury ; Goldberg, Daniel N. ; Huss, Matthias ; Bingham, Robert G. ; Gourmelen, Noel

In: Remote Sensing, 2020, vol. 12, no. 10, p. 1563

Meltwater from the glaciers in High Mountain Asia plays a critical role in water availability and food security in central and southern Asia. However, observations of glacier ablation and accumulation rates are limited in spatial and temporal scale due to the challenges that are associated with fieldwork at the remote, high-altitude settings of these glaciers. Here, using a...