Articles | Volume 386
https://doi.org/10.5194/piahs-386-223-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-386-223-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Evaluation of satellite precipitation products for real-time extreme river flow modeling in data scarce regions
International Centre for Water Hazard and Risk Management under the auspices of UNESCO (ICHARM) & Public Works Research Institute (PWRI), Tsukuba 305-8516, Japan
National Graduate Institute for Policy Studies (GRIPS), Tokyo 106-8677, Japan
Mohamed Rasmy
International Centre for Water Hazard and Risk Management under the auspices of UNESCO (ICHARM) & Public Works Research Institute (PWRI), Tsukuba 305-8516, Japan
National Graduate Institute for Policy Studies (GRIPS), Tokyo 106-8677, Japan
Toshio Koike
International Centre for Water Hazard and Risk Management under the auspices of UNESCO (ICHARM) & Public Works Research Institute (PWRI), Tsukuba 305-8516, Japan
National Graduate Institute for Policy Studies (GRIPS), Tokyo 106-8677, Japan
Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, China
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Roshan Indika Jayasinghe, Mohamad Rasmy, and Toshio Koike
Proc. IAHS, 386, 291–297, https://doi.org/10.5194/piahs-386-291-2024, https://doi.org/10.5194/piahs-386-291-2024, 2024
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This focused on my experience as an Engineer in the Mahaweli River basin. Simultaneously, Floods & droughts are the major problems in this basin, I tried to use the upper reservoirs to control these disasters by finding the reasons and ways to manage these difficulties by using gathered knowledge at ICHARM. This helps me to understand the conflict among stakeholders, and find the reasons and solutions for efficient water management in the system, by developing a physical model based on policies.
Akshay Kowlesser, Mohamed Rasmy, and Toshio Koike
Proc. IAHS, 386, 271–276, https://doi.org/10.5194/piahs-386-271-2024, https://doi.org/10.5194/piahs-386-271-2024, 2024
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A flood management plan for the Grand River North West basin in Mauritius was developed to address the risks associated with climate change-induced flooding. Historical and projected climatic data were analyzed to discern trends in flood occurrence. A hydrological model was constructed to simulate the basin’s response to extreme flood events, and a Geographic Information System-based model was created for flood vulnerability map using exposure, susceptibility and resilience indicators.
Abdul Wahid Mohamed Rasmy, Maksym Gusyev, Katsunori Tamakawa, Miho Ohara, and Toshio Koike
Proc. IAHS, 386, 265–270, https://doi.org/10.5194/piahs-386-265-2024, https://doi.org/10.5194/piahs-386-265-2024, 2024
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To support decision-makers in flood disaster management, a real-time flood monitoring system was established in the Niger and Volta basins under the Water disaster platform to enhance climate resilience in Africa (WADiRE-Africa). The system utilized real-time satellite rainfall data to bridge the gap between data scarcity and inaccessibility and a hydrological model to simulate the inundation extents at basin and hotspot scales. Presently, the prototype system is under testing in both basins.
Badri Bhakta Shrestha, Mohamed Rasmy, Tomoki Ushiyama, Ralph Allen Acierto, Takatoshi Kawamoto, Masakazu Fujikane, Hiroyuki Ito, and Takafumi Shinya
Proc. IAHS, 386, 127–132, https://doi.org/10.5194/piahs-386-127-2024, https://doi.org/10.5194/piahs-386-127-2024, 2024
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A strong correlation between extreme rainfall and damaged paddy area in the past period was observed and the floods may affect rice paddies when 1-d or 4-d rainfall exceeds 25 mm or 71 mm. Flood inundation and rice crop damage might be more severe in the future due to climate change than in the past period. The average rice crop damage per year is approximately two times higher for the future period than for past period, suggesting more serious rice crop damage in future due to climate change.
Muhammad Masood and Abdul Wahid Mohamed Rasmy
Proc. IAHS, 386, 27–32, https://doi.org/10.5194/piahs-386-27-2024, https://doi.org/10.5194/piahs-386-27-2024, 2024
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Early flash floods result from the abundant precipitation frequently lead to significant losses of agriculture in the north-eastern region of Bangladesh. Allocating necessary storage to provide spaces for excess water can save the crop. This study calculates the necessary storage with a new method: Flood duration curve (FDC); estimates water storage capacity by using satellite-based citizen science haor volume estimation technique and finally, investigates an alternate solution of the problem.
Ralph Allen Acierto, Tomoki Ushiyama, and Toshio Koike
Proc. IAHS, 386, 209–216, https://doi.org/10.5194/piahs-386-209-2024, https://doi.org/10.5194/piahs-386-209-2024, 2024
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The study evaluated how well a GCM can reproduce the past weather patterns linked to the heavy rainfall events in Davao river basin by using raingauge and ERA5 data as reference. Our findings show that MRI-AGCM 3.2S reproduced similar weather patterns in JJA and DJF seasons as compared to ERA5 but due to small differences in configuration lead to biases in the local rainfall. This method can be also applied to other river basins and for evaluating how the future local rainfall will change.
Osamu Itagaki, Miho Ohara, and Toshio Koike
Proc. IAHS, 386, 153–158, https://doi.org/10.5194/piahs-386-153-2024, https://doi.org/10.5194/piahs-386-153-2024, 2024
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This paper presents a trial estimation result of quantitative flood damage reduction effect by installing a spillway on a riverine levee in a protected area for promoting the “River Basin Disaster Resilience and Sustainability by All” (Ryuuiki-chisui) initiative which is strongly promoted in Japan. The result shows that flood damage is considerably reduced, e.g. average annual damage to paddy fields in the area can be expected to decrease, although the inundation frequency will increase.
Lingxue Liu, Tianqi Ao, and Li Zhou
EGUsphere, https://doi.org/10.5194/egusphere-2022-452, https://doi.org/10.5194/egusphere-2022-452, 2022
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Soil moisture (SM) initial conditions of the hydrological model, usually obtained from the model warm-up, significantly impact the simulation efficiency. In the case of no warm-up phase, this paper proposes a methodology to fill the gap via obtaining the SM initial conditions using an alternative global dataset. It validates that warm-up is necessary for the model calibration with default initial conditions, and well-utilization of the processed ERA5-Land could skip warm-up effectively.
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Short summary
The study provides valuable insights into the use of cutting-edge technologies for real-time extreme flow modelling and disaster risk reduction strategies in data-scarce regions. The methodology presented here improved forecasting lead time and accuracy of real-time satellite precipitations. This highlights the practical implications of public domain datasets and models for informed decision-making. The study can complement informed decision-making for flood preparedness in transboundary basins.
The study provides valuable insights into the use of cutting-edge technologies for real-time...