Compound droughts under climate change in Switzerland

von Matt, Christoph Nathanael; Muelchi, Regula; Gudmundsson, Lukas; Martius, Olivia

doi:https://doi.org/10.5194/nhess-24-1975-2024

Articles | Volume 24, issue 6

https://doi.org/10.5194/nhess-24-1975-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Drought, society, and ecosystems (NHESS/BG/GC/HESS inter-journal...

https://doi.org/10.5194/nhess-24-1975-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 6

Research article

|

13 Jun 2024

Research article |

| 13 Jun 2024

Compound droughts under climate change in Switzerland

Christoph Nathanael von Matt, Regula Muelchi, Lukas Gudmundsson, and Olivia Martius

Supplement

https://doi.org/10.5194/nhess-24-1975-2024-supplement

Data sets

COM-DROUGHTS Drought Indices Christoph Nathanael von Matt et al. https://doi.org/10.5281/zenodo.10908410

Hydro-CH2018-Runoff ensemble (Version v1) Regula Mülchi et al. https://doi.org/10.5281/zenodo.3937485

DHM25 - das digitale Höhenmodell der Schweiz Swisstopo https://www.swisstopo.admin.ch/de/hoehenmodell-dhm25

Generalisierte Hintergrundkarte zur Darstellung hydrologischer Daten BAFU https://opendata.swiss/en/dataset/generalisierte-hintergrundkarte-zur-darstellung-hydrologischer-daten

CH2018 - Climate Scenarios for Switzerland CH2018 Project Team https://doi.org/10.18751/Climate/Scenarios/CH2018/1.0

Model code and software

sf: Simple Features for R. R package version 1.0.12 E. Pebesma et al. https://cran.r-project.org/web/packages/sf/index.html

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Short summary

The simultaneous occurrence of meteorological (precipitation), agricultural (soil moisture), and hydrological (streamflow) drought can lead to augmented impacts. By analysing drought indices derived from the newest climate scenarios for Switzerland (CH2018, Hydro-CH2018), we show that with climate change the concurrence of all drought types will increase in all studied regions of Switzerland. Our results stress the benefits of and need for both mitigation and adaptation measures at early stages.