Articles | Volume 26, issue 6
Research article
30 Mar 2022
Research article |  | 30 Mar 2022

The role of morphology in the spatial distribution of short-duration rainfall extremes in Italy

Paola Mazzoglio, Ilaria Butera, Massimiliano Alvioli, and Pierluigi Claps

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Cited articles

Accorsi, M.: SOIUSA (Suddivisione Internazionale Unificata del Sistema Alpino) classification, ARPA Piemonte [data set], (last access: 19 March 2022), 2016. 
Allamano, P., Claps, P., Laio, F., and Thea, C.: A data-based assessment of the dependence of short-duration precipitation on elevation, Phys. Chem. Earth, 34, JPCE1649,, 2009. 
Alvioli, M., Marchesini, I., Reichenbach, P., Rossi, M., Ardizzone, F., Fiorucci, F., and Guzzetti, F.: Automatic delineation of geomorphological slope units with r.slopeunits v1.0 and their optimization for landslide susceptibility modeling, Geosci. Model Dev., 9, 3975–3991,, 2016. 
Alvioli, M., Guzzetti, F., and Marchesini I.: Parameter-free delineation of slope units and terrain subdivision of Italy, Geomorphology, 358, 107124,, 2020a. 
Alvioli M., Guzzetti F., Marchesini I.: Slope units delineation [data set], (last access: 19 March 2022), 2020b. 
Short summary
We have analyzed the spatial dependence of rainfall extremes upon elevation and morphology in Italy. Regression analyses show that previous rainfall–elevation relations at national scale can be substantially improved with new data, both using topography attributes and constraining the analysis within areas stemming from geomorphological zonation. Short-duration mean rainfall depths can then be estimated, all over Italy, using different parameters in each area of the geomorphological subdivision.