Climate induced increase in frequency and area affected by critical rainfall conditions triggering debris flows in Austria » Supplementary data

Data description Climate data The climate data comprises observational and climate scenario data for rainfall events that potentially trigger torrent processes. Empirical intensity-duration relationships were established by integrating event data from the Austrian torrent event catalog with high-resolution, hourly re-analysis precipitation data. Critical rainfall conditions were identified for two primary process types: debris flow and fluvial, for three physio-climatic regions. The data represents the number of precipitation events per year that exceed critical rainfall thresholds over a period of up to five consecutive days. An event is counted only the fist time it exceeds a critical threshold to prevent double-counting. The thresholds vary over the regions and are appended to each dataset. The dataset includes one file for each process type for the observational data SPARTACUS, and one file for each process type and model for the Austrian climate scenarios ÖKS15. Resolution: Time: Annual Space: 1 x 1 km grid Domain: Austria Torrent data Torrent event data include the event date, process type, and triggering rainfall metrics (total event precipitation, rainfall duration, rainfall intensity, maximum intensity, antecedent precipitation for 1, 3, 7 and 28 days), mapped to the catchment centroids. The data source denotes the WLK database (source = 1), supplemented with events from ERDOK (source = 2), respectively. Slope mask A shapefile that masks areas with slopes below 15°. Regions The three physio-climatic regions in Austria used in the paper are available as geopackage. Masks Raster files that are used for the calculation of the indices and for plotting. Mask_AT_Spartacus: Mask file needed to clip areas outside of Austrias borders for plotting Mask_3_regions: Mask file needed to correctly attribute the regional thresholds for observational and model data Data sources INCA: https://doi.org/10.60669/6akt-5p05 SPARTACUS: https://doi.org/10.60669/m6w8-s545 ÖKS15: https://doi.org/10.60669/b37q-jd39 Physio-climatic regions: https://doi.org/10.1016/j.envsoft.2025.106324 How to cite If you use this dataset, kindly cite the associated paper: Kaitna, R., Schlögl, M., Becsi, B., Rieder, H. & Formayer, H.: Climate induced increase in frequency and area affected by critical rainfall conditions triggering debris flows in Austria. Commun Earth Environ 6, 793 (2025). https://doi.org/10.1038/s43247-025-02760-w.