Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 29, issue 19
Articles | Volume 29, issue 19
https://doi.org/10.5194/hess-29-5031-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-5031-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29, issue 19
Research article
 | 
09 Oct 2025
Research article |  | 09 Oct 2025

Informativeness of teleconnections in frequency analysis of rainfall extremes

Andrea Magnini, Valentina Pavan, and Attilio Castellarin

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Short summary
This study describes a new methodology to identify regional structures in the dependence of extreme rainfall on global climate indices. The study area is North-Central Italy, but the methods are highly adaptable to other regions. We observe that while multiple climate indices show influence, the Western Mediterranean Oscillation Index and East Atlantic West Russia pattern appear to have the strongest effects, with regional structures that align with other studies. We also show that using these indices may improve estimation of extreme rainfall depth with a given probability.
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