Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro
Flash floods are increasingly frequent worldwide. Recent flooding in eastern Ethiopia resulted in casualties, destruction of property and interruptions of service. National flash flood forecasts made today primarily consider precipitation, putting less emphasis on surface processes. Enhancing accura...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/134737 |
| _version_ | 1855534717819944960 |
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| author | Semie, Addisu G Diro, Gulilat T Demissie, Teferi Dejene Yigezu, Yonas M Hailu, Binyam |
| author_browse | Demissie, Teferi Dejene Diro, Gulilat T Hailu, Binyam Semie, Addisu G Yigezu, Yonas M |
| author_facet | Semie, Addisu G Diro, Gulilat T Demissie, Teferi Dejene Yigezu, Yonas M Hailu, Binyam |
| author_sort | Semie, Addisu G |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Flash floods are increasingly frequent worldwide. Recent flooding in eastern Ethiopia resulted in casualties, destruction of property and interruptions of service. National flash flood forecasts made today primarily consider precipitation, putting less emphasis on surface processes. Enhancing accurate flash flood forecasts by accounting for surface processes and hydrological models together with a deeper understanding of heavy precipitation mechanisms is of paramount importance. To this end, an uncoupled WRF-Hydro model was calibrated for eastern Ethiopia to simulate extreme floods. Sensitivity analysis for August 2006 showed that infiltration runoff, hydraulic soil conductivity and saturated volumetric soil moisture with parameter values of 0.1, 1.5 and 1.0 produced realistic streamflow distribution. Extreme floods in March 2005 and April 2007 were further studied. The
results showed that WRF-Hydro replicates temporal and spatial patterns well. Analysis using observational/reanalysis data revealed associated physical processes. Precipitation during these events exceeded long-term climatology and spanned wider areas in eastern Ethiopia. These heavy precipitation events are associated with strong upper-level westerly jet streams and rainfall-conducive circulation anomalies at lower levels. Positive outcomes from WRF-Hydro suggest operational implementation for flood monitoring and early warning systems in forecasting centers. |
| format | Journal Article |
| id | CGSpace134737 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1347372025-12-08T10:29:22Z Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro Semie, Addisu G Diro, Gulilat T Demissie, Teferi Dejene Yigezu, Yonas M Hailu, Binyam extreme events flooding forecasting flood damage agriculture Flash floods are increasingly frequent worldwide. Recent flooding in eastern Ethiopia resulted in casualties, destruction of property and interruptions of service. National flash flood forecasts made today primarily consider precipitation, putting less emphasis on surface processes. Enhancing accurate flash flood forecasts by accounting for surface processes and hydrological models together with a deeper understanding of heavy precipitation mechanisms is of paramount importance. To this end, an uncoupled WRF-Hydro model was calibrated for eastern Ethiopia to simulate extreme floods. Sensitivity analysis for August 2006 showed that infiltration runoff, hydraulic soil conductivity and saturated volumetric soil moisture with parameter values of 0.1, 1.5 and 1.0 produced realistic streamflow distribution. Extreme floods in March 2005 and April 2007 were further studied. The results showed that WRF-Hydro replicates temporal and spatial patterns well. Analysis using observational/reanalysis data revealed associated physical processes. Precipitation during these events exceeded long-term climatology and spanned wider areas in eastern Ethiopia. These heavy precipitation events are associated with strong upper-level westerly jet streams and rainfall-conducive circulation anomalies at lower levels. Positive outcomes from WRF-Hydro suggest operational implementation for flood monitoring and early warning systems in forecasting centers. 2023-09 2023-11-27T16:33:27Z 2023-11-27T16:33:27Z Journal Article https://hdl.handle.net/10568/134737 en Open Access MDPI Semie AG, Diro GT, Demissie T, Yigezu YM, Hailu B. 2023. Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro. Water 15(18):3262. |
| spellingShingle | extreme events flooding forecasting flood damage agriculture Semie, Addisu G Diro, Gulilat T Demissie, Teferi Dejene Yigezu, Yonas M Hailu, Binyam Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro |
| title | Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro |
| title_full | Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro |
| title_fullStr | Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro |
| title_full_unstemmed | Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro |
| title_short | Towards Improved Flash Flood Forecasting over Dire Dawa, Ethiopia Using WRF-Hydro |
| title_sort | towards improved flash flood forecasting over dire dawa ethiopia using wrf hydro |
| topic | extreme events flooding forecasting flood damage agriculture |
| url | https://hdl.handle.net/10568/134737 |
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