Work

Out of bounds: system structural uncertainty under extreme events

Year: 2026

Type: conference-paper

Abstract: The study focuses on the Fossolo catchment in Bologna, which has been the subject of various modelling studies over the years. While previous research has focused on parameter optimization, limited attention has been devoted to model structure and boundary conditions. The study aims to investigate if the hypothesis of independence of subsystems is valid under extreme events. Two classes of models are developed in EPA-SWMM: one reflecting the original system structure and another based on a re-analysis of the system that incorporates downstream conditions. Sensitivity analysis reveals that downstream conditions impact parameter sets during extreme events, with pipe and impervious surface roughness being the most sensitive parameters.

Source: Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna)

DOI: 10.71573/z6medd29

Authors: Evangelisti, Margherita, Pons, Vincent, Strømberg, Merethe, Pritsis, Spyros, Di Federico, Vittorio, Maglionico, Marco

Institutions: University of Bologna, Luleå University of Technology, Norwegian University of Science and Technology

Language: English

Topic: Urban Stormwater Management Solutions

Subfield: Environmental Engineering

Field: Environmental Science

Domain: Physical Sciences

SDGs: Climate action, Clean water and sanitation

Open Access status: green

Funder: HORIZON EUROPE Framework Programme