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Université de Fribourg

Toward mountains without permanent snow and ice

Huss, Matthias ; Bookhagen, B. ; Huggel, Christian ; Jacobsen, D. ; Bradley, R.S. ; Clague, J.J. ; Vuille, M. ; Buytaert, W. ; Cayan, D. R. ; Greenwood, G. ; Mark, B. G. ; Milner, A.M. ; Weingartner, R. ; Winder, M.

In: Earth’s Future, 2017, vol. 5, no. 5, p. 2016EF000514

The cryosphere in mountain regions is rapidly declining, a trend that is expected to accelerate over the next several decades due to anthropogenic climate change. A cascade of effects will result, extending from mountains to lowlands with associated impacts on human livelihood, economy, and ecosystems. With rising air temperatures and increased radiative forcing, glaciers will become smaller...

Université de Fribourg

Towards remote monitoring of sub-seasonal glacier mass balance

Huss, Matthias ; Sold, Leo ; Hoelzle, Martin ; Stokvis, Mazzal ; Salzmann, Nadine ; Farinotti, Daniel ; Zemp, Michael

In: Annals of Glaciology, 2013, vol. 54, no. 63, p. 75–83

This study presents a method that allows continuous monitoring of mass balance for remote or inaccessible glaciers, based on repeated oblique photography. Hourly to daily pictures from two automatic cameras overlooking two large valley glaciers in the Swiss Alps are available for eight ablation seasons (2004–11) in total. We determine the fraction of snow-covered glacier surface from...

Université de Fribourg

Global-scale hydrological response to future glacier mass loss

Huss, Matthias ; Hock, Regine

In: Nature Climate Change, 2018, vol. 8, no. 2, p. 135–140

Worldwide glacier retreat and associated future runoff changes raise major concerns over the sustainability of global water resources1,2,3,4, but global-scale assessments of glacier decline and the resulting hydrological consequences are scarce5,6. Here we compute global glacier runoff changes for 56 large-scale glacierized drainage basins to 2100 and analyse the glacial impact on streamflow....

Université de Fribourg

Modelling and numerical simulation of the dynamics of glaciers including local damage effects

Jouvet, G. ; Picasso, M. ; Rappaz, J. ; Huss, Matthias ; Funk, Martin

In: Mathematical Modelling of Natural Phenomena, 2011, vol. 6, no. 05, p. 263-280

A numerical model to compute the dynamics of glaciers is presented. Ice damage due to cracks or crevasses can be taken into account whenever needed. This model allows simulations of the past and future retreat of glaciers, the calving process or the break-off of hanging glaciers. All these phenomena are strongly affected by climate change.Ice is assumed to behave as an incompressible fluid with...

Université de Fribourg

Future retreat of Great Aletsch Glacier

Jouvet, Guillaume ; Huss, Matthias

In: Journal of Glaciology, 2019, vol. 65, no. 253, p. 869–872

We model the future evolution of the largest glacier of the European Alps – Great Aletsch Glacier, Switzerland – during the 21st century. For that purpose we use a detailed three-dimensional model, which combines full Stokes ice dynamics and surface mass balance forced with the most recent climate projections (CH2018), as well as with climate data of the last decades. As a result, all...

Université de Fribourg

Evaluating the effect of snow and ice melt in an Alpine headwater catchment and further downstream in the River Rhine

Junghans, Nadine ; Cullmann, Johannes ; Huss, Matthias

In: Hydrological Sciences Journal, 2011, vol. 56, no. 6, p. 981–993

The runoff regime of glacierized headwater catchments in the Alps is essentially characterized by snow and ice melt. High Alpine drainage basins influence distant downstream catchments of the Rhine River basin. In particular, during the summer months, low-flow conditions are probable with strongly reduced snow and ice melt under climate change conditions. This study attempts to quantify present...

Université de Fribourg

Mass-balance reconstruction for Glacier No. 354, Tien Shan, from 2003 to 2014

Kronenberg, Marlene ; Barandun, Martina ; Hoelzle, Martin ; Huss, Matthias ; Farinotti, Daniel ; Azisov, Erlan ; Usubaliev, Ryskul ; Gafurov, Abror ; Petrakov, Dmitry ; Kääb, Andreas

In: Annals of Glaciology, 2016, vol. 57, no. 71, p. 92–102

This study presents a reconstruction of the seasonal mass balance of Glacier No. 354, located in the Akshiirak range, Kyrgyzstan, from 2003 to 2014. We use a distributed accumulation and temperature-index melt model driven by daily air temperature and precipitation from a nearby meteorological station. The model is calibrated with in situ measurements of the annual mass balance collected from...

Université de Fribourg

Potential climatic transitions with profound impact on Europe: review of the current state of six ‘tipping elements of the climate system’

Levermann, Anders ; Bamber, Jonathan L. ; Drijfhout, Sybren ; Ganopolski, Andrey ; Haeberli, Winfried ; Harris, Neil R. P. ; Huss, Matthias ; Krüger, Kirstin ; Lenton, Timothy M. ; Lindsay, Ronald W. ; Notz, Dirk ; Wadhams, Peter ; Weber, Susanne

In: Climatic Change, 2011, vol. 110, no. 3-4, p. 845-878

We discuss potential transitions of six climatic subsystems with large-scale impact on Europe, sometimes denoted as tipping elements. These are the ice sheets on Greenland and West Antarctica, the Atlantic thermohaline circulation, Arctic sea ice, Alpine glaciers and northern hemisphere stratospheric ozone. Each system is represented by co-authors actively publishing in the corresponding field....

Université de Fribourg

Integrating a glacier retreat model into a hydrological model – Case studies of three glacierised catchments in Norway and Himalayan region

Li, Hong ; Beldring, Stein ; Xu, C.-Y. ; Huss, Matthias ; Melvold, Kjetil ; Jain, Sharad K.

In: Journal of Hydrology, 2015, vol. 527, p. 656–667

Glaciers are crucial in many countries where meltwater from glaciers is an important source of water for drinking water supply, irrigation, hydropower generation and the ecological system. Glaciers are also important indicators of climate change. They have been significantly altered due to the global warming and have subsequently affected the regional hydrological regime. However, few models are...

Université de Fribourg

The length of the world’s glaciers – a new approach for the global calculation of center lines

Machguth, Horst ; Huss, Matthias

In: The Cryosphere, 2014, vol. 8, no. 5, p. 1741–1755

Glacier length is an important measure of glacier geometry. Nevertheless, global glacier inventories are mostly lacking length data. Only recently semi-automated approaches to measure glacier length have been developed and applied regionally. Here we present a first global assessment of glacier length using an automated method that relies on glacier surface slope, distance to the glacier margins...