Global warming is reshaping precipitation extremes and increasing temporal rainfall unevenness, yet precipitation unevenness has rarely been quantified at the scale of consecutive precipitation events. Using daily observations from 19,183 gauge stations worldwide during 1980–2022, we defined WE50 as the total duration of the consecutive wettest precipitation events required to deliver 50% of annual precipitation, and WE50_event as the number of selected events contributing to that half. The global mean WE50 is 27.8 days, and WE50_event is 9.4 events, with Europe exhibiting the largest values. Trend analyses show that WE50 decreases significantly at 45.7% of global stations, whereas WE50_event changes are generally weak. A decomposition further indicates that the global WE50 decline is largely attributable to shorter durations of consecutive precipitation events, with comparable contributions observed in Europe and South America, whereas regional differences emerge in the contributions of precipitation amount, event intensity, and duration.
Monsoon rainfall hazards depend on event intensity and sequence, not annual totals alone. We analyzed 8,766 daily observations from four gauges in southern Nghe An during 1998–2021, together with daily 0.05° Climate Hazards Center InfraRed Precipitation with Stations (CHIRPS) rainfall at Nam Dan. Thirteen indices repre...
Tuyen Thi Tran, Giao Ha Quynh Nguyen, La Thuy Huong· Asian Journal of Water, Envi...· 0 citations
Climate change is intensifying the global water cycle, with extreme precipitation events increasing in frequency and intensity at the global scale. While trends in daily precipitation extremes are well-documented, sub-daily extremes – critical for flash flood risk – remain poorly characterized, due to limited long-term...
Nicolas Decoopman, Juliette Blanchet, Antoine Blanc et al.· Hydrology and Earth System S...· 0 citations
Urban flooding has worsened significantly in Cotonou (major flood events in 2010, 2018, and 2020), yet this deterioration occurs against a backdrop of largely stable extreme precipitation. This study analyses the temporal variability of extreme precipitation indices in Cotonou over 40 years (1984–2024) in order to ex...
Ninette Alceste Tollo, Audace A. V. Dossou-Olory, Inès Oyédé· Proceedings of IAHS· 0 citations
Precipitation seasonality is commonly described using wet and dry periods, but this framework can obscure multiple rainfall maxima within a rainy season. Here we introduce a global framework for identifying the number of precipitation peaks (NPP) during rainy periods from daily precipitation using optimal harmonic seas...
Zi-Jie Zhao, Yue-Yang Lu, A. Taschetto· Geophysical Research Letters· 0 citations
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