Application of Remote-Sensing Techniques for Water-Resources Investigations in the UAE

Author(s):  
Abdulrahman S. Alsharhan ◽  
Zeinelabidin E. Rizk
2020 ◽  
Author(s):  
Simonetta Paloscia ◽  
Giacomo Fontanelli ◽  
Simone Pettinato ◽  
Emanuele Santi ◽  
Giuliano Ramat ◽  
...  

<p>This project deals with the implementation of an innovative water management system in Mediterranean countries (i.e. Tunisia and Egypt), which suffer from chronic water scarcity, together with two European countries (Germany and Italy). The consortium is developing and applying synergic methods and algorithms for investigating the water cycle, using remote sensing techniques.</p><p>The focus is on the use of satellite data (both optical and microwave) for monitoring vegetation cover and water status along with soil moisture temporal evolutions in order to improve the knowledge of the water cycle in arid areas. Both local and regional monitoring are carried out in order to investigate different spatial scales.</p><p>Environmental models and algorithms for the retrieval of hydrological parameters have been developed in the frame of this project in order to match the main goal of the project, i.e. to propose practical and cost-effective solutions for driving and updating a method for the sustainable use of water in agriculture. </p><p>An optimized management of water resources for cultivated lands on Egyptian Delta (Northern part) and Tunisian territory will be realized by analyzing the available spatial and temporal data for the areas of interest appropriately selected for this purpose. As such, an efficient water use, equitable distribution of water resources, community participation in decisions, and sustainable system operation over time can be supported.</p><p>First of all, we aim to localize different crop and irrigation techniques for the study regions. This information is required as a basis for further investigations and assessments. Secondly, the water efficiency for different lands, crop types and irrigation systems will be assessed.</p><p>Afterwards, possible improvements in agricultural practice with respect to climate change scenarios and information on water efficiency will be determined by rating the outcome from the assessment.</p>


2016 ◽  
Author(s):  
Mohamed Elhag ◽  
Jarbou A. Bahrawi

Abstract. Daily evapotranspiration is a major component in water resources management plans. In arid ecosystems, the quest for efficient water budget is always hard to achieve due to insufficient irrigational water and high evapotranspiration rates. Therefore, monitoring of daily evapotranspiration is a keystone practice for sustainable water resources management, especially in arid environments. Remote Sensing Techniques offered a great help to estimate the daily evapotranspiration on a regional scale. Existing open source algorithms proved to estimate daily evapotranspiration in arid environments comprehensively. The only deficiency of these algorithms is course scale of the used remote sensing data. Consequently, the adequate downscaling algorithm is a compulsory step to rationalize an effective water resources management plans. Daily evapotranspiration was fairly estimated using AATSR in conjunction with MERIS data acquired in July 2013 with one-kilometer spatial resolution and 3 days temporal resolution under SEBS model. Results were validated against reference evapotranspiration ground truth values using standardized Penman-Monteith method with R2 of 0.879. The findings of the current research are successfully fulfilled to monitor turbulent heat fluxes values estimated from AATSR and MERIS data with a temporal resolution of 3 days only in conjunction with reliable meteorological data. Research verdicts are necessary inputs for well-informed decision-making process regarding sustainable water resources management


2019 ◽  
Vol 21 (2) ◽  
pp. 540-549
Author(s):  
José Kelton Ribeiro ◽  
Renato Oliveira Barros ◽  
Ernane Cortez Lima

No presente trabalho foi realizado uma análise em torno das unidades geoambientais e do uso e ocupação do solo na cidade de Sobral-CE. A área da pesquisa está inserida na Bacia hidrográfica do rio Acaraú-CE, mais precisamente em seu médio curso. O estudo tomou por base as técnicas de Geoprocessamento e do Sensoriamento Remoto que permitem a obtenção de resultados confiáveis, onde, por meio da visualização da superfície terrestre e das imagens orbitais, as mesmas apresentaram-se como indispensável no decorrer da pesquisa. A metodologia consiste na descrição dos aspectos geomorfológicos e do uso e cobertura do solo, identificando uma série de fatores que contribuem para a degradação ambiental da Região.Palavras-chave: Sistemas ambientais; Classificação supervisionada; Recursos Hídricos. ABSTRACTIn the present work an analysis was carried out around the geoenvironmental units and the use and occupation of the soil in the city of Sobral-CE. The research area is inserted in the watershed of the Acaraú-CE River, precisely in its middle course. The study took on the basis geoprocessing and remote sensing techniques which allow the obtaining of reliable results, where, by means of visualization of the terrestrial surface and the orbital images, they presented themselves as indispensable in Course of the research. The methodology consists of the description of the geomorphological aspects and the use and coverage of the soil, identifying a number of factors contributing to the environmental degradation of the region.Keywords: environmental systems; supervised classification; Water resources. RESUMENEn el presente trabajo se realizó un análisis en torno a las unidades geoambientales y el empleo y ocupación del suelo en la ciudad de Sobral-CE. El área de investigación se inserta en la cuenca del río Acaraú-CE, más precisamente en su curso medio. El estudio tomó como base las técnicas de geoprocesamiento y teledetección, que permiten obtener resultados fiables, donde, mediante la visualización de la superficie terrestre y las imágenes orbitales, se presentaron como indispensables en Curso de la investigación. La metodología consiste en la descripción de los aspectos geomorfológicos y el uso y cobertura del suelo, identificando una serie de factores que contribuyen a la degradación ambiental de la región.Palabras clave: sistemas medioambientales; clasificación supervisada; Recursos hídricos.


2017 ◽  
Vol 6 (1) ◽  
pp. 141-147 ◽  
Author(s):  
Mohamed Elhag ◽  
Jarbou A. Bahrawi

Abstract. Daily evapotranspiration is a major component of water resources management plans. In arid ecosystems, the quest for an efficient water budget is always hard to achieve due to insufficient irrigational water and high evapotranspiration rates. Therefore, monitoring of daily evapotranspiration is a key practice for sustainable water resources management, especially in arid environments. Remote sensing techniques offered a great help to estimate the daily evapotranspiration on a regional scale. Existing open-source algorithms proved to estimate daily evapotranspiration comprehensively in arid environments. The only deficiency of these algorithms is the course scale of the used remote sensing data. Consequently, the adequate downscaling algorithm is a compulsory step to rationalize an effective water resources management plan. Daily evapotranspiration was estimated fairly well using an Advance Along-Track Scanner Radiometer (AATSR) in conjunction with (MEdium Resolution Imaging Spectrometer) MERIS data acquired in July 2013 with 1 km spatial resolution and 3 days of temporal resolution under a surface energy balance system (SEBS) model. Results were validated against reference evapotranspiration ground truth values using standardized Penman–Monteith method with R2 of 0.879. The findings of the current research successfully monitor turbulent heat fluxes values estimated from AATSR and MERIS data with a temporal resolution of 3 days only in conjunction with reliable meteorological data. Research verdicts are necessary inputs for a well-informed decision-making processes regarding sustainable water resource management.


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