Articles | Volume 21, issue 8
https://doi.org/10.5194/nhess-21-2563-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/nhess-21-2563-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A paradigm of extreme rainfall pluvial floods in complex urban areas: the flood event of 15 July 2020 in Palermo (Italy)
Antonio Francipane
CORRESPONDING AUTHOR
Department of Engineering, University of Palermo, Palermo 90128,
Italy
Dario Pumo
Department of Engineering, University of Palermo, Palermo 90128,
Italy
Marco Sinagra
Department of Engineering, University of Palermo, Palermo 90128,
Italy
Goffredo La Loggia
Department of Engineering, University of Palermo, Palermo 90128,
Italy
Leonardo Valerio Noto
Department of Engineering, University of Palermo, Palermo 90128,
Italy
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The Friuli Venezia Giulia (FVG) region, northeastern Italy, records the heaviest precipitation annual totals of the country. The region counts on a dense ground-station network whose sampling frequency has been progressively increased up to 1 min step. In this work, we propose a comprehensive analysis of the available dataset of continuous series at high temporal resolution to verify whether trends in very short rainfalls are underway. Increasing trends have been detected on some stations.
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Enhanced weathering (EW) is a promising strategy for carbon sequestration. Since models may help to characterize field EW, the present work applies a hydro-biogeochemical model to four case studies characterized by different rainfall seasonality, vegetation and soil type. Rainfall seasonality strongly affects EW dynamics, but low carbon sequestration suggests that an in-depth analysis at the global scale is required to see if EW may be effective to mitigate climate change.
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Short summary
In the last few years, some cities in the Mediterranean area have witnessed an increase in extreme rainfall events such as urban floods. The study focuses on a particularly intense urban flood that occurred in Palermo on 15 July 2020, which highlighted the need for a shift in the way stormwater in urban settlements is managed. We think that the framework used to study the impacts of the event and some conclusive remarks could be easily transferred to other urban contexts.
In the last few years, some cities in the Mediterranean area have witnessed an increase in...
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