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The Cryosphere An interactive open-access journal of the European Geosciences Union
The Cryosphere, 9, 2399-2404, 2015
https://doi.org/10.5194/tc-9-2399-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Brief communication
17 Dec 2015
Brief Communication: Global reconstructions of glacier mass change during the 20th century are consistent
B. Marzeion1, P. W. Leclercq2, J. G. Cogley3, and A. H. Jarosch4 1Institute of Geography, University of Bremen, Bremen, Germany
2Department of Geosciences, University of Oslo, Oslo, Norway
3Department of Geography, Trent University, Peterborough, Canada
4Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland
Abstract. Recent estimates of the contribution of glaciers to sea-level rise during the 20th century are strongly divergent. Advances in data availability have allowed revisions of some of these published estimates. Here we show that outside of Antarctica, the global estimates of glacier mass change obtained from glacier-length-based reconstructions and from a glacier model driven by gridded climate observations are now consistent with each other, and also with an estimate for the years 2003–2009 that is mostly based on remotely sensed data. This consistency is found throughout the entire common periods of the respective data sets. Inconsistencies of reconstructions and observations persist in estimates on regional scales.

Citation: Marzeion, B., Leclercq, P. W., Cogley, J. G., and Jarosch, A. H.: Brief Communication: Global reconstructions of glacier mass change during the 20th century are consistent, The Cryosphere, 9, 2399-2404, https://doi.org/10.5194/tc-9-2399-2015, 2015.
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We show that estimates of global glacier mass change during the 20th century, obtained from glacier-length-based reconstructions and from a glacier model driven by gridded climate observations are now consistent with each other and also with an estimate for the years 2003-2009 that is mostly based on remotely sensed data. This consistency is found throughout the entire common periods of the respective data sets. Inconsistencies of reconstructions and observations persist on regional scales.
We show that estimates of global glacier mass change during the 20th century, obtained from...
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