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Université de Fribourg

High uncertainty in 21st century runoff projections from glacierized basins

Huss, Matthias ; Zemp, Michael ; Joerg, Philip C. ; Salzmann, Nadine

In: Journal of Hydrology, 2014, vol. 510, p. 35–48

Glacier response to a changing climate and its impact on runoff is understood in general terms, but model-based projections are affected by considerable uncertainties. They originate from the driving climate model, input data quality, and simplifications in the glacio-hydrological model and hamper the reliability of the simulations. Here, an integrative assessment of the uncertainty in 21st...

Université de Fribourg

A new model for global glacier change and sea-level rise

Huss, Matthias ; Hock, Regine

In: Cryospheric Sciences, 2015, p. 54

The anticipated retreat of glaciers around the globe will pose far-reaching challenges to the management of fresh water resources and significantly contribute to sea-level rise within the coming decades. Here, we present a new model for calculating the twenty-first century mass changes of all glaciers on Earth outside the ice sheets. The Global Glacier Evolution Model (GloGEM) includes mass loss...

Université de Fribourg

New long-term mass-balance series for the Swiss Alps

Huss, Matthias ; Dhulst, Laurie ; Bauder, Andreas

In: Journal of Glaciology, 2015, vol. 61, no. 227, p. 551–562

In this study we present 19 new or re-analysed series of glacier-wide seasonal mass balance for the Swiss Alps based on direct measurements. The records partly start around 1920 and continue until today. Previously unpublished and unevaluated observations of point winter and annual balance are compiled from various sources and archives. These highly valuable datasets have not yet been...

Université de Fribourg

Density assumptions for converting geodetic glacier volume change to mass change

Huss, Matthias

In: The Cryosphere, 2013, vol. 7, no. 3, p. 877–887

The geodetic method is widely used for assessing changes in the mass balance of mountain glaciers. However, comparison of repeated digital elevation models only provides a glacier volume change that must be converted to a change in mass using a density assumption or model. This study investigates the use of a constant factor for the volume-to-mass conversion based on a firn compaction model...

Université de Fribourg

Distributed ice thickness and volume of all glaciers around the globe

Huss, Matthias ; Farinotti, Daniel

In: Journal of Geophysical Research, 2012, vol. 117, p. F04010

A new physically based approach for calculating glacier ice thickness distribution and volume is presented and applied to all glaciers and ice caps worldwide. Combining glacier outlines of the globally complete Randolph Glacier Inventory with terrain elevation models (Shuttle Radar Topography Mission/Advanced Spaceborne Thermal Emission and Reflection Radiometer), we use a simple dynamic model to...

Université de Fribourg

Sensitivity of very small glaciers in the Swiss Alps to future climate change

Huss, Matthias ; Fischer, Mauro

In: Cryospheric Sciences, 2016, p. 34

Very small glaciers (<0.5 km2) account for more than 80% of the total number of glaciers in mid- to low-latitude mountain ranges. Although their total area and volume is small compared to larger glaciers, they are a relevant component of the cryosphere, contributing to landscape formation, local hydrology, and sea-level rise. Worldwide glacier monitoring mostly focuses on medium-sized to large...

Université de Fribourg

Present and future contribution of glacier storage change to runoff from macroscale drainage basins in Europe

Huss, Matthias

In: Water Resources Research, 2011, vol. 47, p. W07511

The contribution of glaciers to runoff from large-scale drainage basins in Europe is analyzed for the major streams originating in the Alps: Rhine, Rhone, Po, and Danube. Detailed information on glacier storage change is available from monthly mass balance data of 50 Swiss glaciers for the period 1908–2008. Storage changes are extrapolated to all glaciers in the European Alps. By comparing...

Université de Fribourg

A high-resolution bedrock map for the Antarctic Peninsula

Huss, Matthias ; Farinotti, Daniel

In: The Cryosphere, 2014, vol. 8, no. 4, p. 1261–1273

Assessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsula north of 70° S on a 100 m grid. We calculate distributed ice thickness based on surface...

Université de Fribourg

Extrapolating glacier mass balance to the mountain range scale: the European Alps 1900–2100

Huss, Matthias

In: The Cryosphere Discuss., 2012, vol. 6, p. 1117-1156

This study addresses the extrapolation of single glacier mass balance measurements to the mountain range scale and aims at deriving time series of area-averaged mass balance and ice volume change for all glaciers in the European Alps for the period 1900–2100. Long-term mass balance series for 50 Swiss glaciers based on a combination of field data and modelling, and WGMS data for glaciers in...