Hourly Precipitation Patterns and Extremization over Italy using convection-permitting reanalysis data

Cavalleri, Francesco; Lussana, Cristian; Viterbo, Francesca; Brunetti, Michele; Bonanno, Riccardo; Manara, Veronica; Lacavalla, Matteo; Maugeri, Maurizio

doi:10.5194/nhess-26-279-2026

Articles | Volume 26, issue 1

https://doi.org/10.5194/nhess-26-279-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-26-279-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 1

Research article

|

19 Jan 2026

Research article |

| 19 Jan 2026

Hourly Precipitation Patterns and Extremization over Italy using convection-permitting reanalysis data

Francesco Cavalleri, Cristian Lussana, Francesca Viterbo, Michele Brunetti, Riccardo Bonanno, Veronica Manara, Matteo Lacavalla, and Maurizio Maugeri

Supplement

https://doi.org/10.5194/nhess-26-279-2026-supplement

Data sets

HOPSS-X (HOurly Precipitation Spatial Structures and eXtremes) from MERIDA HRES Reanalysis Francesco Cavalleri https://doi.org/10.5281/zenodo.15772543

Model code and software

fcavalleri/EPEs: Hourly Extreme Precipitation Structures Scripts Francesco Cavalleri https://doi.org/10.5281/zenodo.18266486

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Short summary

This study investigates hourly precipitation patterns and extremes across Italy using the MERIDA HRES reanalysis, a dataset that combines observations and weather models to reconstruct past atmospheric conditions. By analising 37 years of hourly data, the study identifies an increase in hourly extreme precipitation in Alpine areas during summer and southern coastal regions in autumn, providing insights into evolving precipitation patterns and supporting climate resilience planning.