Your search found 5 records
1 Liu, Y.; Zhang, J.-y.; Elmahdi, Amgad; Yang, Q.-l.; Guan, X.-x.; Liu, C.-s.; He, R.-m.; Wang, G.-q. 2021. Transferability of a lumped hydrologic model, the Xin’anjiang model based on similarity in climate and geography. Water Supply, 21(5):2191-2201. [doi: https://doi.org/10.2166/ws.2021.055]
Hydrology ; Models ; Watersheds ; Catchment areas ; Climatic zones ; Geography ; Rivers ; Runoff ; Discharges ; Precipitation ; Forecasting ; Experimentation / China / Chuzhou / Chengxi Experimental Watershed
(Location: IWMI HQ Call no: e-copy only Record No: H050320)
https://iwaponline.com/ws/article-pdf/21/5/2191/920069/ws021052191.pdf
https://vlibrary.iwmi.org/pdf/H050320.pdf
(0.52 MB) (532 KB)
Hydrological experiments are essential to understanding the hydrological cycles and promoting the development of hydrologic models. Model parameter transfers provide a new way of doing hydrological forecasts and simulations in ungauged catchments. To study the transferability of model parameters for hydrological modelling and the influence of parameter transfers on hydrological simulations, the Xin’anjiang model (XAJ model), which is a lumped hydrologic model based on a saturation excess mechanism that has been widely applied in different climate regions of the world, was applied to a low hilly catchment in eastern China, the Chengxi Experimental Watershed (CXEW). The suitability of the XAJ model was tested in the eastern branch catchment of CXEW and the calibrated model parameters of the eastern branch catchment were then transferred to the western branch catchment and the entire watershed of the CXEW. The results show that the XAJ model performs well for the calibrated eastern branch catchment at both daily and monthly scales on hydrological modelling with the NSEs over 0.6 and the REs less than 2.0%. Besides, the uncalibrated catchments of the western branch catchment and the entire watershed of the CSEW share similarities in climate (the precipitation) and geography (the soil texture and vegetation cover) with the calibrated catchment, the XAJ model and the transferred model parameters can capture the main features of the hydrological processes in both uncalibrated catchments (western catchments and the entire watershed). This transferability of the model is useful for a scarce data region to simulate the hydrological process and its forecasting.
2 Tawfik, Mohamed Hassan; Hoogesteger, J.; Elmahdi, Amgad; Hellegers, P. 2021. Unpacking wastewater reuse arrangements through a new framework: insights from the analysis of Egypt. Water International, 46(4):605-625. [doi: https://doi.org/10.1080/02508060.2021.1921503]
Water reuse ; Wastewater treatment ; Waste management ; Waste collection ; Sewerage ; Irrigation ; Water policies ; Regulations ; Treatment plants ; Technology ; Water resources ; Villages ; Farmers ; Case studies / Egypt / Nile Delta / Marsa Matrouh / El Hamamee / Al Ashara
(Location: IWMI HQ Call no: e-copy only Record No: H050497)
https://www.tandfonline.com/doi/pdf/10.1080/02508060.2021.1921503?needAccess=true
https://vlibrary.iwmi.org/pdf/H050497.pdf
(10.20 MB) (10.2 MB)
Wastewater reuse is identified as strategic to help ameliorate scarcity in water-stressed regions around the world. However, to develop it, there is a need to better understand the social, institutional and technological contexts in which it takes place. This article develops a novel socio-technical framework to inform such an analysis and applies it to current wastewater reuse in Egypt. Our analysis highlights the different actors, management activities and practices that shape wastewater collection, transfer, treatment, discharge and/or reuse in different social, technological and environmental contexts in Egypt. It points out bottlenecks of current wastewater reuse policies and programmes.
3 Badawy, Adham; Elmahdi, Amgad; El-Hafez, S. A.; Ibrahim, A. 2022. Water profitability analysis to improve food security and climate resilience: a case study in the Egyptian Nile Delta. Climate, 10(2):17. (Special issue: Climate Change and Food Insecurity) [doi: https://doi.org/10.3390/cli10020017]
Water productivity ; Profitability ; Food security ; Climate change ; Resilience ; Case studies ; Water security ; Crops ; Farmers / Egypt / Nile Delta / Sharkia / El-Beheira / Kafr El-Sheikh
(Location: IWMI HQ Call no: e-copy only Record No: H051090)
https://www.mdpi.com/2225-1154/10/2/17/pdf?version=1643533935
https://vlibrary.iwmi.org/pdf/H051090.pdf
(2.55 MB) (2.55 MB)
The food self-sufficiency policy has always featured as an unquestionable policy objective for Egypt. This is understandable when one considers both the high population growth and the social and political vulnerability associated with a dependence on food imports and world market food prices such as wheat. Intensive agriculture has led to a growing subsidy burden for the Egyptian government. In addition, the agricultural fields in Egypt are commonly distributed with relatively small sizes parcels that usually reduce the reliability of the agricultural sector, particularly in the delta region, to meet the national food policy. On top of that, climate change, through changing weather patterns and increased temperatures, is affecting agricultural yields and thus farmers’ livelihoods. A water profitability analysis was conducted for three governorates in the Nile Delta in Egypt to establish a baseline and assess the net return per unit of water of the main crops in each of these governorates; this can act as a reference of the water profitability of different crops before they are affected by climate change and other internal and external factors. The analysis was based on extensive in-person surveys in each governorate in addition to workshop discussions with farmers. The study has highlighted the impact of a lack of extension services, which limits farmers’ ability to increase their land and water productivity. Farmers with more access to subsidized production inputs managed to achieve higher levels of water profitability even on smaller lands. Finally, we drew from our findings key policy actions to improve water profitability and land productivity for farmers in the Nile Delta to achieve higher levels of food security. This will help build resilient food production systems that are reliable in the face of climate change and other drivers. In addition, an integrated nexus strategy and plan for the inter- and intra-country is recommended to address the challenges related to food and climate security.
4 Breisinger, C.; Elmahdi, Amgad; Kassim, Y.; Perez, N. 2022. Regional developments: Middle East and North Africa. In International Food Policy Research Institute (IFPRI). 2022 Global food policy report: climate change and food systems. Washington, DC, USA: International Food Policy Research Institute (IFPRI). pp.120-123. (Global Food Policy Report)
Food systems ; Agricultural production ; Water management ; Climate change ; Technology ; Policies ; Reforms ; Innovation ; Investment ; International cooperation ; Trade ; Sustainability / Middle East / North Africa
(Location: IWMI HQ Call no: e-copy only Record No: H051161)
https://ebrary.ifpri.org/utils/getfile/collection/p15738coll2/id/135892/filename/136097.pdf#page=7
https://vlibrary.iwmi.org/pdf/H051161.pdf
(0.17 MB) (2.22 MB)
5 Laderach, P.; Merrey, D. J.; Schapendonk, F.; Dhehibi, B.; Ruckstuhl, Sandra; Mapedza, Everisto; Najjar, D.; Dessalegn, B.; Amarnath, Giriraj; Nangia, V.; Al-Zu'bi, Maha; Biradar, C.; Pacillo, G.; Govind, A.; Hakhu, A.; Yigezu, Y. A.; Gupta, T. D.; Madurga-Lopez, I.; Lahham, Nisreen; Cosgrove, B.; Joshi, Deepa; Grosjean, G.; Hugh, B.; Elmahdi, Amgad; Frija, A.; Udalagama, Upandha; Nicol, Alan. 2022. Strengthening climate security in the Middle East and North Africa Region. CGIAR FOCUS Climate Security. 80p. (Position Paper No. 2022/3)
Climate change ; Risk ; Agriculture ; Livelihoods ; Migration ; Food prices ; Transboundary waters ; Water management ; Water security ; Water scarcity ; Financing ; Monitoring ; Governance ; Gender equality ; Women's empowerment ; Capacity development / Middle East / North Africa / Morocco / Iran (Islamic Republic of) / Egypt / Jordan
(Location: IWMI HQ Call no: e-copy only Record No: H051658)
https://cgspace.cgiar.org/bitstream/handle/10568/117616/MENA%20Position%20Paper.pdf?sequence=5&isAllowed=y
https://vlibrary.iwmi.org/pdf/H051658.pdf
(5.27 MB) (5.27 MB)
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