Large-scale risk assessment on snow avalanche hazard in alpine regions

Ortner, Gregor; Bründl, Michael; Kropf, Chahan M.; Röösli, Thomas; Bühler, Yves; Bresch, David N.

doi:https://doi.org/10.5194/nhess-23-2089-2023

Articles | Volume 23, issue 6

https://doi.org/10.5194/nhess-23-2089-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-23-2089-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 6

Research article

|

13 Jun 2023

Research article |

| 13 Jun 2023

Large-scale risk assessment on snow avalanche hazard in alpine regions

Gregor Ortner, Michael Bründl, Chahan M. Kropf, Thomas Röösli, Yves Bühler, and David N. Bresch

Data sets

CLIMADA v1: a global weather and climate risk assessment platform (https://github.com/CLIMADA-project/climada_python) Gabriela Aznar-Siguan and David N. Bresch https://doi.org/10.5194/gmd-12-3085-2019

Large-scale risk assessment on snow avalanche hazard in alpine regions Gregor Ortner https://doi.org/10.16904/envidat.398

Model code and software

CLIMADA-project/climada_python: v3.0.1 Chahan M. Kropf, Emanuel Schmid, Gabriela Aznar-Siguan, Samuel Eberenz, Thomas Vogt, Carmen B. Steinmann, Thomas Röösli, Samuel Lüthi, Inga Sauer, Evelyn Mühlhofer, Jan Hartman, Benoit P. Guillod, Zélie Stalhandske, Alessio Ciullo, Pui Man Kam, Chris Fairless, Jan Wüthrich, Simona Meiler, Rachel Bungener, Veronica Bozzini, Dario Stocker, and David N. Bresch https://doi.org/10.5281/zenodo.5555825

Short summary

This paper presents a new approach to assess avalanche risk on a large scale in mountainous regions. It combines a large-scale avalanche modeling method with a state-of-the-art probabilistic risk tool. Over 40 000 individual avalanches were simulated, and a building dataset with over 13 000 single buildings was investigated. With this new method, risk hotspots can be identified and surveyed. This enables current and future risk analysis to assist decision makers in risk reduction and adaptation.