Articles | Volume 11, issue 2
https://doi.org/10.5194/tc-11-949-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/tc-11-949-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
18 Apr 2017
Research article |
| 18 Apr 2017
How accurate are estimates of glacier ice thickness? Results from ITMIX, the Ice Thickness Models Intercomparison eXperiment
Daniel Farinotti
CORRESPONDING AUTHOR
Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Zurich, Switzerland
Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
Douglas J. Brinkerhoff
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
Garry K. C. Clarke
Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada
Johannes J. Fürst
Institute of Geography, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
Holger Frey
Department of Geography, University of Zurich, Zurich, Switzerland
Prateek Gantayat
Divecha Centre for Climate Change, Indian Institute of Science, Bangalore, India
Fabien Gillet-Chaulet
Institut des Géosciences de l'Environnement (IGE), Université Grenoble Alpes, CNRS, IRD, Grenoble, France
Claire Girard
Department of Earth System Science, University of California Irvine, Irvine, CA, USA
Matthias Huss
Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Zurich, Switzerland
Department of Geosciences, University of Fribourg, Fribourg, Switzerland
Paul W. Leclercq
Department of Geosciences, University of Oslo, Oslo, Norway
Andreas Linsbauer
Department of Geography, University of Zurich, Zurich, Switzerland
Department of Geosciences, University of Fribourg, Fribourg, Switzerland
Horst Machguth
Department of Geography, University of Zurich, Zurich, Switzerland
Department of Geosciences, University of Fribourg, Fribourg, Switzerland
Carlos Martin
British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
Fabien Maussion
Institute of Atmospheric and Cryospheric Sciences, University of Innsbruck, Innsbruck, Austria
Mathieu Morlighem
Department of Earth System Science, University of California Irvine, Irvine, CA, USA
Cyrille Mosbeux
Institut des Géosciences de l'Environnement (IGE), Université Grenoble Alpes, CNRS, IRD, Grenoble, France
Ankur Pandit
Department of Civil Engineering, Indian Institute of Technology, Bombay, India
Andrea Portmann
Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
Antoine Rabatel
Institut des Géosciences de l'Environnement (IGE), Université Grenoble Alpes, CNRS, IRD, Grenoble, France
RAAJ Ramsankaran
Department of Civil Engineering, Indian Institute of Technology, Bombay, India
Thomas J. Reerink
Institute for Marine and Atmospheric Research (IMAU), Utrecht University, Utrecht, the Netherlands
Olivier Sanchez
Institut des Géosciences de l'Environnement (IGE), Université Grenoble Alpes, CNRS, IRD, Grenoble, France
Peter A. Stentoft
Arctic Technology Centre ARTEK, Technical University of Denmark, Kongens Lyngby, Denmark
Sangita Singh Kumari
Department of Civil Engineering, Indian Institute of Technology, Bombay, India
Ward J. J. van Pelt
Department of Earth Sciences, Uppsala University, Uppsala, Sweden
Brian Anderson
Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
Toby Benham
Scott Polar Research Institute, University of Cambridge, Cambridge, UK
Daniel Binder
Central Institute for Meteorology and Geodynamics (ZAMG), Vienna, Austria
Julian A. Dowdeswell
Scott Polar Research Institute, University of Cambridge, Cambridge, UK
Andrea Fischer
Institute for Interdisciplinary Mountain Research, Austrian Academy of Sciences, Innsbruck, Austria
Kay Helfricht
Institute for Interdisciplinary Mountain Research, Austrian Academy of Sciences, Innsbruck, Austria
Stanislav Kutuzov
Laboratory of Glaciology, Institute of Geography, Russian Academy of Science, Moscow, Russia
Ivan Lavrentiev
Laboratory of Glaciology, Institute of Geography, Russian Academy of Science, Moscow, Russia
Robert McNabb
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
Department of Geosciences, University of Oslo, Oslo, Norway
G. Hilmar Gudmundsson
British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
Huilin Li
State Key Laboratory of Cryospheric Sciences, Tian Shan Glaciological Station, CAREERI, CAS, Lanzhou, China
Liss M. Andreassen
Norwegian Water Resources and Energy Directorate (NVE), Oslo, Norway
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Latest update: 19 Nov 2025
Short summary
ITMIX – the Ice Thickness Models Intercomparison eXperiment – was the first coordinated performance assessment for models inferring glacier ice thickness from surface characteristics. Considering 17 different models and 21 different test cases, we show that although solutions of individual models can differ considerably, an ensemble average can yield uncertainties in the order of 10 ± 24 % the mean ice thickness. Ways forward for improving such estimates are sketched.
ITMIX – the Ice Thickness Models Intercomparison eXperiment – was the first coordinated...
