Assessment of snow model uncertainty in relation to the effect of a 1&thinsp;°C warming using the snow modelling framework openAMUNDSEN

Rottler, Erwin; Storebakken, Brage; Warscher, Michael; Hanzer, Florian; Bertazza, Elena; Strasser, Ulrich

doi:10.5194/tc-20-2351-2026

Articles | Volume 20, issue 4

https://doi.org/10.5194/tc-20-2351-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-20-2351-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 4

Research article

|

23 Apr 2026

Research article |

| 23 Apr 2026

Assessment of snow model uncertainty in relation to the effect of a 1 °C warming using the snow modelling framework openAMUNDSEN

Erwin Rottler, Brage Storebakken, Michael Warscher, Florian Hanzer, Elena Bertazza, and Ulrich Strasser

Data sets

Assessment of snow model uncertainty in relation to the effect of a 1°C warming using the snow modelling framework openAMUNDSEN E. Rottler et al. https://doi.org/10.23728/b2share.530a7560a73647459969f5c21639e8cb

openamundsen/openamundsen: v1.2.1 (v1.2.1) F. Hanzer et al. https://doi.org/10.5281/zenodo.19108928

openAMUNDSEN climate generator v0.2.0 F. Hanzer et al. https://doi.org/10.5281/zenodo.19662555

Short summary

In this study, we simulate the snow cover in a complex mountain area under historical conditions and for a time period characterized by a 1 °C warming using a large number of different snow models. Our objective is the assessment of differences in the modelling results induced by different snow model configurations. We find that differences stemming from the choice of snowmelt method, land cover map and spatial resolution can be comparable in magnitude to the effect of a 1°C warming.