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Université de Fribourg

An upper-bound estimate for the accuracy of glacier volume–area scaling

Farinotti, Daniel ; Huss, Matthias

In: The Cryosphere, 2013, vol. 7, no. 6, p. 1707–1720

Volume–area scaling is the most popular method for estimating the ice volume of large glacier samples. Here, a series of resampling experiments based on different sets of synthetic data is presented in order to derive an upper-bound estimate (i.e. a level achieved only within ideal conditions) for its accuracy. For real-world applications, a lower accuracy has to be expected. We also quantify...

Université de Fribourg

A consensus estimate for the ice thickness distribution of all glaciers on Earth

Farinotti, Daniel ; Huss, Matthias ; Fürst, Johannes J. ; Landmann, Johannes ; Machguth, Horst ; Maussion, Fabien ; Pandit, Ankur

In: Nature Geoscience, 2019, vol. 12, no. 3, p. 168–173

Knowledge of the ice thickness distribution of the world’s glaciers is a fundamental prerequisite for a range of studies. Projections of future glacier change, estimates of the available freshwater resources or assessments of potential sea-level rise all need glacier ice thickness to be accurately constrained. Previous estimates of global glacier volumes are mostly based on scaling...

Université de Fribourg

The bedrock topography of Starbuck Glacier, Antarctic Peninsula, as determined by radio-echo soundings and flow modeling

Farinotti, Daniel ; King, Edward C. ; Albrecht, Anika ; Huss, Matthias ; Gudmundsson, G. Hilmar

In: Annals of Glaciology, 2014, vol. 55, no. 67, p. 22–28

A glacier-wide ice-thickness distribution and bedrock topography is presented for Starbuck Glacier, Antarctic Peninsula. The results are based on 90 km of ground-based radio-echo sounding lines collected during the 2012/13 field season. Cross-validation with ice-thickness measurements provided by NASA's IceBridge project reveals excellent agreement. Glacier-wide estimates are derived using a...

Université de Fribourg

Runoff evolution in the Swiss Alps: projections for selected high-alpine catchments based on ENSEMBLES scenario

Farinotti, Daniel ; Usselmann, Stephanie ; Huss, Matthias ; Bauder, Andreas ; Funk, Martin

In: Hydrological Processes, 2011, vol. 25, p. -

The Alps are often referred to as the ‘water tower of Europe’. In Switzerland, many branches of the economy, especially the hydropower industry, are closely linked to and dependent on the availability of water. Assessing the impact of climate change on streamflow runoff is, thus, of great interest. Major efforts have already been made in this respect, but the analyses often focus on...

Université de Fribourg

The bedrock topography of Gries- and Findelengletscher

Feiger, Nadine ; Huss, Matthias ; Leinss, Silvan ; Sold, Leo ; Farinotti, Daniel

In: Geographica Helvetica, 2018, vol. 73, no. 1, p. 1–9

Knowledge of the ice thickness distribution of glaciers is important for glaciological and hydrological applications. In this contribution, we present two updated bedrock topographies and ice thickness distributions for Gries- and Findelengletscher, Switzerland. The results are based on ground-penetrating radar (GPR) measurements collected in spring 2015 and already-existing data. The GPR...

Université de Fribourg

Identification of glacial meltwater runoff in a karstic environment and its implication for present and future water availability

Finger, D. ; Hugentobler, A. ; Huss, Matthias ; Voinesco, A. ; Wernli, Heini ; Fischer, D. ; Weber, E. ; Jeannin, Pierre-Yves ; Kauzlaric, M. ; Wirz, A. ; Vennemann, T. ; Hüsler, F. ; Schädler, B. ; Weingartner, R.

In: Hydrol. Earth Syst. Sci., 2013, vol. 17, no. 8, p. 3261–3277

Glaciers all over the world are expected to continue to retreat due to the global warming throughout the 21st century. Consequently, future seasonal water availability might become scarce once glacier areas have declined below a certain threshold affecting future water management strategies. Particular attention should be paid to glaciers located in a karstic environment, as parts of the...

Université de Fribourg

The value of multiple data set calibration versus model complexity for improving the performance of hydrological models in mountain catchments

Finger, David ; Vis, Marc ; Huss, Matthias ; Seibert, Jan

In: Water Resources Research, 2015, vol. 51, no. 4, p. 1939–1958

The assessment of snow, glacier, and rainfall runoff contribution to discharge in mountain streams is of major importance for an adequate water resource management. Such contributions can be estimated via hydrological models, provided that the modeling adequately accounts for snow and glacier melt, as well as rainfall runoff. We present a multiple data set calibration approach to estimate runoff...

Université de Fribourg

Application and validation of long-range terrestrial laser scanning to monitor the mass balance of very small glaciers in the Swiss Alps

Fischer, Mauro ; Huss, Matthias ; Kummert, Mario ; Hoelzle, Martin

In: The Cryosphere, 2016, vol. 10, no. 3, p. 1279–1295

Due to the relative lack of empirical field data, the response of very small glaciers (here defined as being smaller than 0.5 km²) to current atmospheric warming is not fully understood yet. Investigating their mass balance, e.g. using the direct glaciological method, is a prerequisite to fill this knowledge gap. Terrestrial laser scanning (TLS) techniques operating in the near infrared...

Université de Fribourg

Surface elevation and mass changes of all Swiss glaciers 1980–2010

Fischer, Mauro ; Huss, Matthias ; Hoelzle, Martin

In: The Cryosphere, 2015, vol. 9, no. 2, p. 525–540

Since the mid-1980s, glaciers in the European Alps have shown widespread and accelerating mass losses. This article presents glacier-specific changes in surface elevation, volume and mass balance for all glaciers in the Swiss Alps from 1980 to 2010. Together with glacier outlines from the 1973 inventory, the DHM25 Level 1 digital elevation models (DEMs) for which the source data over...

Université de Fribourg

The New swiss glacier inventory SGI2010: relevance of Using high-resolution source data in areas dominated by very small glaciers

Fischer, Mauro ; Huss, Matthias ; Barboux, Chloé ; Hoelzle, Martin

In: Arctic, Antarctic, and Alpine Research, 2014, vol. 46, no. 4, p. 933–945

In view of the rapid and accelerating glacier retreat observed in the European Alps during the last decades, the repeated creation of glacier inventories is important to understand the spatio-temporal variability of glacier changes and to support modeling studies. This article presents the latest glacier inventory for the entire Swiss Alps (SGI2010) derived by manual digitization from...