| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2025-08-21 0:34 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2025 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
COMPOUND EVENTS IN ROMANIA (1951-2024)
Authors:
Cătălina-Roxana BRATU (1,2), Bogdan ANTONESCU (1,2), Dragos ENE (2)
*
Affiliation:
1)Faculty of Physics, University of Bucharest, 405 Atomiștilor, Măgurele, 077125 Bucharest, Romania
2)National Institute for Earth Physics, Măgurele, Romania, 077125, Magurele, Romania
E-mail
catalina.bratu@infp.ro
Keywords:
compound events, hazard, risk
Abstract:
Compound events (CEs) are simultaneous or sequential occurrences of multiple weather and climate hazards that can lead to escalating risks to society and the environment. This study investigates the spatial and temporal characteristics of multivariate compound events across Romania using the Compound Events Toolbox and Dataset (CETD), which integrates observational data, reanalysis products, and model simulations. Focusing on daily maximum temperature, total precipitation, and wind speed data from ERA5 reanalysis, obtained from the Copernicus Climate Change Service (C3S) Climate Data Store (CDS), we identified different hazard combinations, including hot-dry, wet-windy, and stagnation-related events. They were characterized as: hot (≥95th percentile), dry (<5th percentile), wet (≥95th percentile), windy (≥95th percentile), and stagnation - where daily mean near-surface wind speed (sfcWind) is below 3.2 m/s and daily mean wind speed at 500 hPa (preWind500) is below 13 m/s. Our analysis reveals that specific regions in Romania have become increasingly susceptible to these compound extremes, with both their frequency and duration exhibiting significant upward trends in recent decades. By identifying regional hotspots of compound event occurrence, this work provides essential insights for climate resilience planning in the face of ongoing and future climate change.
References:
[1] Yin, C., Ting, M., Kornhuber, K. et al. CETD, a global compound events detection and visualisation toolbox and dataset. Sci Data 12, 356 (2025). https://doi.org/10.1038/s41597-025-04530-x
[2] Zscheischler, J., Martius, O., Westra, S. et al. A typology of compound weather and climate events. Nat Rev Earth Environ 1, 333–347 (2020).https://doi.org/10.1038/s43017-020-0060-z
|
|
|
|