Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data
Abstract In our era, the rapid increase of parallel programming coupled with high‐performance computing (HPC) facilities allows for the use of two‐dimensional shallow water equation (2D‐SWE) algorithms for simulating floods at the “hydrological” catchment scale, rather than just at the “hydraulic” f...
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| Format: | Article |
| Language: | English |
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Wiley
2023-10-01
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| Series: | Water Resources Research |
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| Online Access: | https://doi.org/10.1029/2023WR034599 |
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| author | Pierfranco Costabile Carmelina Costanzo John Kalogiros Vasilis Bellos |
| author_facet | Pierfranco Costabile Carmelina Costanzo John Kalogiros Vasilis Bellos |
| author_sort | Pierfranco Costabile |
| collection | DOAJ |
| description | Abstract In our era, the rapid increase of parallel programming coupled with high‐performance computing (HPC) facilities allows for the use of two‐dimensional shallow water equation (2D‐SWE) algorithms for simulating floods at the “hydrological” catchment scale, rather than just at the “hydraulic” fluvial scale. This approach paves the way for the development of new operational systems focused on impact‐based flash‐floods nowcasting, wherein hydrodynamic simulations directly model the spatial and temporal variability of measured or predicted rainfall on impacts even at a street scale. Specifically, the main goal of this research is to make a step to move toward the implementation of an effective flash flood nowcasting system in which timely and accurate impact warnings are provided by including weather radar products in the HPC 2D‐SWEs modelling framework able to integrate watershed hydrology, flow hydrodynamics, and river urban flooding in just one model. The timing, location, and intensity of the street‐level evolution of some key elements at risk (people, vehicles, and infrastructures) are also discussed considering both calibration issues and the role played by the spatial and temporal rainfall resolution. All these issues are analyzed and discussed having as a starting point the flood event which hit the Mandra town (Athens, Greece) on the 15 November 2017, highlighting the feasibility and the accuracy of the overall approach and providing new insights for the research in this field. |
| format | Article |
| id | doaj-art-d0c2935c48344f988d1db0eafc98c48a |
| institution | Matheson Library |
| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2023-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Water Resources Research |
| spelling | doaj-art-d0c2935c48344f988d1db0eafc98c48a2025-06-27T07:44:26ZengWileyWater Resources Research0043-13971944-79732023-10-015910n/an/a10.1029/2023WR034599Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar DataPierfranco Costabile0Carmelina Costanzo1John Kalogiros2Vasilis Bellos3Department of Environmental Engineering University of Calabria Rende ItalyDepartment of Environmental Engineering University of Calabria Rende ItalyInstitute of Environmental Research and Sustainable Development National Observatory of Athens Athens GreeceDepartment of Environmental Engineering Democritus University of Thrace Xanthi GreeceAbstract In our era, the rapid increase of parallel programming coupled with high‐performance computing (HPC) facilities allows for the use of two‐dimensional shallow water equation (2D‐SWE) algorithms for simulating floods at the “hydrological” catchment scale, rather than just at the “hydraulic” fluvial scale. This approach paves the way for the development of new operational systems focused on impact‐based flash‐floods nowcasting, wherein hydrodynamic simulations directly model the spatial and temporal variability of measured or predicted rainfall on impacts even at a street scale. Specifically, the main goal of this research is to make a step to move toward the implementation of an effective flash flood nowcasting system in which timely and accurate impact warnings are provided by including weather radar products in the HPC 2D‐SWEs modelling framework able to integrate watershed hydrology, flow hydrodynamics, and river urban flooding in just one model. The timing, location, and intensity of the street‐level evolution of some key elements at risk (people, vehicles, and infrastructures) are also discussed considering both calibration issues and the role played by the spatial and temporal rainfall resolution. All these issues are analyzed and discussed having as a starting point the flood event which hit the Mandra town (Athens, Greece) on the 15 November 2017, highlighting the feasibility and the accuracy of the overall approach and providing new insights for the research in this field.https://doi.org/10.1029/2023WR0345992D hydrodynamic‐based flash floods modellingimpact‐based nowcastinghigh‐resolution radar datarain resolution effectshigh‐performance computing |
| spellingShingle | Pierfranco Costabile Carmelina Costanzo John Kalogiros Vasilis Bellos Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data Water Resources Research 2D hydrodynamic‐based flash floods modelling impact‐based nowcasting high‐resolution radar data rain resolution effects high‐performance computing |
| title | Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data |
| title_full | Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data |
| title_fullStr | Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data |
| title_full_unstemmed | Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data |
| title_short | Toward Street‐Level Nowcasting of Flash Floods Impacts Based on HPC Hydrodynamic Modeling at the Watershed Scale and High‐Resolution Weather Radar Data |
| title_sort | toward street level nowcasting of flash floods impacts based on hpc hydrodynamic modeling at the watershed scale and high resolution weather radar data |
| topic | 2D hydrodynamic‐based flash floods modelling impact‐based nowcasting high‐resolution radar data rain resolution effects high‐performance computing |
| url | https://doi.org/10.1029/2023WR034599 |
| work_keys_str_mv | AT pierfrancocostabile towardstreetlevelnowcastingofflashfloodsimpactsbasedonhpchydrodynamicmodelingatthewatershedscaleandhighresolutionweatherradardata AT carmelinacostanzo towardstreetlevelnowcastingofflashfloodsimpactsbasedonhpchydrodynamicmodelingatthewatershedscaleandhighresolutionweatherradardata AT johnkalogiros towardstreetlevelnowcastingofflashfloodsimpactsbasedonhpchydrodynamicmodelingatthewatershedscaleandhighresolutionweatherradardata AT vasilisbellos towardstreetlevelnowcastingofflashfloodsimpactsbasedonhpchydrodynamicmodelingatthewatershedscaleandhighresolutionweatherradardata |