High-Impact Precipitation Events in the European Alps (1961–2022)

High-Impact Precipitation Events in the European Alps (1961–2022) This repository contains the datasets generated in the analysis of High-Impact Precipitation Events (HIPEs) in the European Alps (1961–2022). The dataset is based on the Alpine Combined Precipitation Dataset (ACPD) (also generated in this work) and includes both single-day and multi-day event rankings, enriched event metadata (.csv), and gridded spatial products (.rds) over the Alpine Convention area. 1. ACDP_HIPEs_Alps_1961-2022_enriched.csv Enriched list of multi-day HIPEs with event-level metadata. Variables: Event: unique event identifier A: affected area (fraction of the Alpine Convention area) m: averaged magnitude (exceedence over the threshold) m_log: log-transformed averaged magnitude M: overal magnitude (A*m_log) Start_date: event start date End_date: event end date Duration: event length in days WT: sequence of associated Weather Types (abbreviated codes) Flood: indicator (0/1) of flood occurrence River_flood: indicator (0/1) of riverine flood occurrence Flash_flood: indicator (0/1) of flash flood occurrence Fatalities_Fl: number of reported fatalities NUTS_ID: NUTS3 regional codes of affected areas CNTR_CODE: ISO country codes (IT, FR, CH, AT, SI, …) 2. ACPD_HIPE_Ranking_1961-2022.csv Ranking of single-day HIPEs. Variables: time: date (YYYY-MM-DD) A: affected area (fraction of Alpine domain) m: averaged magnitude (exceedence over the threshold) m_log: log-transformed averaged magnitude M: overal magnitude (A*m_log) 3. ACPD_HIPE_Ranking_1961-2022_multiday.csv Ranking of multi-day HIPEs (consecutive HIPE days are concatenated into a same event. Same as 1). Variables: Event: unique identifier A: affected area m: averaged magnitude (exceedence over the threshold) m_log: log-transformed averaged magnitude M: overal magnitude (A*m_log) Start_date: start date End_date: end date Duration: number of consecutive days 4. ACPD_HIPE_Ranking_1961-2022_gridded.rds RDS object containing the gridded representation of single-day HIPEs over the Alpine Convention domain. time: date (YYYY-MM-DD) lat: grid cell latitude (°N) lon: grid cell longitude (°E) P_H: precipitation at the grid cell for the individual HIPE (mm) A: affected area (same event-level value as in the single-day ranking CSV, not spatialized) m: event severity (accumulated precipitation, mm; same value as in CSV, not spatialized) m_log: log-transformed severity (same as CSV, not spatialized) M: combined magnitude index (same as CSV, not spatialized) facet_var: auxiliary variable for faceting/grouping in visualizations Note: Only P_H is a spatially explicit variable (grid cell precipitation). Other variables (A, m, m_log, M) are event-level descriptors replicated across the Alps. 5. ACPD_HIPE_Ranking_1961-2022_multiday_gridded.rds RDS object containing the gridded representation of multi-day HIPEs over the Alpine Convention domain. Event: Event identifier lat: grid cell latitude (°N) lon: grid cell longitude (°E) P_H: precipitation at the grid cell for the individual HIPE (mm) Start_date: starting event date End_date: ending event date M: combined magnitude index (same as CSV, not spatialized) facet_var: auxiliary variable for faceting/grouping in visualizations Note: Only P_H is a spatially explicit variable (grid cell precipitation). Other variables (A, m, m_log, M) are event-level descriptors replicated across the Alps. 6. ACPD_HIPE_Ranking_threshold_nevents_1961-2022_gridded.rds RDS object with the thresholds used for HIPE detection (per grid cell), together with the total number of (single-day) events detected at each location. lon: grid cell longitude (°E) lat: grid cell latitude (°N) Thr: Precipitation threshold at the grid cell level used to determine a HIPE Events: Number of days over the threshold