Your search found 4 records
1 Bruggeman, A.; Ouessar, M.; Mohtar, R. H. (Eds.) 2008. Watershed management in dry areas, challenges and opportunities: proceedings of a workshop held in Jerba, Tunisia, 4-7 January 2005. Aleppo, Syria: International Center for Agricultural Research in the Dry Areas (ICARDA). 173p.
Watershed management ; Water resource management ; Soil conservation ; Soil types ; Water conservation ; Soil management ; Arid lands ; Mountains ; Highlands ; Reservoirs ; Assessment ; GIS ; Water harvesting ; Runoff ; Sedimentation ; Infiltration ; Hydrology ; Analysis ; Rain ; Flooding ; Drought ; Models ; Calibration ; Rural areas ; Water table ; Groundwater recharge ; Wells ; Supplemental irrigation ; Cost benefit analysis ; Case studies / North Africa / Middle East / Morocco / Tunisia / Yemen / Algeria / USA / Oum Zessar Watershed / Red Sea / Walnut Gulch Watershed / Kamech Watershed / Zaghouan / Oued Zioud Watershed
(Location: IWMI HQ Call no: 333.91 G229 BRU Record No: H034797)
(0.60 MB)
2 Mechlia, N. B.; Oweis, T.; Masmoudi, M.; Khatteli, H.; Ouessar, M.; Sghaier, N.; Anane, M.; Sghaier, M. 2009. Assessment of supplemental irrigation and water harvesting potential: methodologies and case studies from Tunisia. Aleppo, Syria: International Center for Agricultural Research in the Dry Areas (ICARDA) 35p.
(Location: IWMI HQ Call no: 631.7 G240 MEC Record No: H042777)
(6.63 MB)
3 Adham, A.; Wesseling, J. G.; Abed, R.; Riksen, M.; Ouessar, M.; Ritsema, C. J. 2019. Assessing the impact of climate change on rainwater harvesting in the Oum Zessar Watershed in southeastern Tunisia. Agricultural Water Management, 221:131-140. [doi: https://doi.org/10.1016/j.agwat.2019.05.006]
Rainwater harvesting ; Techniques ; Climate change ; Water availability ; Watersheds ; Models ; Evapotranspiration ; Catchment areas ; Precipitation ; Temperature ; Forecasting / Tunisia / Oum Zessar Watershed
(Location: IWMI HQ Call no: e-copy only Record No: H049324)
(2.02 MB)
Climate change is believed to have a large impact on water resources system both globally and regionally. It has become a major global issue, especially in developing countries because these are most affected by its impacts. Rainwater harvesting techniques offer an alternative source of water and represent specific adaptive strategies to cope with water scarcity within future climate change. Studying the impact of climate change on rainwater harvesting techniques, however, is difficult, because the general circulation models (GCMs) which are widely used to simulate scenarios of future climate change operate on a coarse scale. We estimated the impact of climate change on water availability at the watershed level by downscaling precipitation and temperature from the GCMs using a statistical downscaling model. A water harvesting model then assessed the performance of the rainwater harvesting techniques for the Oum Zessar watershed in southeastern Tunisia under current climatic conditions and scenarios of future climate change. Annual temperature tended to increase and precipitation tended to decrease. These changes of climatic variables were used in the water harvesting model to simulate future water availability. Changing the directions of water flow between sub-catchments in combination with changing the spillway heights strongly affected the performance of rainwater harvesting under the scenarios of future climate, resulting in a sufficient water supply for 92% of all sub-catchments, compared to 72% without these changes.
4 Ramat, G.; Santi, E.; Paloscia, S.; Fontanelli, G.; Pettinato, S.; Santurri, L.; Souissi, N.; Da Ponte, E.; Wahab, M. M. A.; Khalil, A. A.; Essa, Y. H.; Ouessar, M.; Dhaou, H.; Sghaier, A.; Hachani, A.; Kassouk, Z.; Chabaane, Z. L. 2023. Remote sensing techniques for water management and climate change monitoring in drought areas: case studies in Egypt and Tunisia. European Journal of Remote Sensing, 56(1):2157335. [doi: https://doi.org/10.1080/22797254.2022.2157335]
Remote sensing ; Techniques ; Water management ; Climate change ; Monitoring ; Drought ; Vegetation ; Soil moisture ; Neural networks ; Semiarid zones ; Evapotranspiration ; Precipitation ; Moderate resolution imaging spectroradiometer ; Case studies / Egypt / Tunisia / Mediterranean region
(Location: IWMI HQ Call no: e-copy only Record No: H052192)
https://www.tandfonline.com/doi/epdf/10.1080/22797254.2022.2157335?needAccess=true
https://vlibrary.iwmi.org/pdf/H052192.pdf
https://vlibrary.iwmi.org/pdf/H052192.pdf
(25.90 MB) (25.9 MB)
This study focused on monitoring the water status of vegetation and soil by exploiting the synergy of optical and microwave satellite data with the aim of improving the knowledge of water cycle in cultivated lands in Egyptian Delta and Tunisian areas. Environmental analysis approaches based on optical and synthetic aperture radar data were carried out to set up the basis for future implementation of practical and cost-effective methods for sustainable water use in agriculture. Long-term behaviors of vegetation indices were thus analyzed between 2000 and 2018. By using SAR data from Sentinel-1, an Artificial Neural Network-based algorithm was implemented for estimating soil moisture and monthly maps for 2018 have been generated to be compared with information derived from optical indices. Moreover, a novel drought severity index was developed and applied to available data. The index was obtained by combining vegetation soil difference index, derived from optical data, and soil moisture content derived from SAR data. The proposed index was found capable of complementing optical and microwave sensitivity to drought-related parameters, although ground data are missing for correctly validating the results, by capturing drought patterns and their temporal evolution better than indices based only on microwave or optical data.
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