Searched for: subject:"aridity"
(1 - 11 of 11)
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Okello, Aline M.L.Saraiva (author), Masih, Ilyas (author), Uhlenbrook, S. (author), Jewitt, Graham P.W. (author), van der Zaag, P. (author)
The variability of rainfall and climate, combined with land use and land cover changes, and variation in geology and soils makes it a difficult task to accurately describe the key hydrological processes in a catchment. With the aim to better understand the key hydrological processes and runoff generation mechanisms in the semi-arid meso-scale...
journal article 2018
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Abbasi, A. (author), Annor, F.O. (author), van de Giesen, N.C. (author)
In this study, a framework for simulating the flow field and heat transfer processes in small shallow inland water bodies has been developed. As the dynamics and thermal structure of these water bodies are crucial in studying the quality of stored water , and in assessing the heat fluxes from their surfaces as well, the heat transfer and...
journal article 2017
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Berghuijs, W.R. (author), Larsen, Joshua R. (author), van Emmerik, T.H.M. (author), Woods, Ross A. (author)
/P) explains ∼90% of the spatial differences in mean runoff across the globe. However, it is unclear if changes in aridity over time are also the most important cause for temporal changes in...
journal article 2017
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Abbasi, A. (author), Annor, F.O. (author), van de Giesen, N.C. (author)
Atmospheric stability conditions over the water surface can affect the evaporative and convective heat fluxes from the water surface. Atmospheric instability occurred 72.5% of the time and resulted in 44.7 and 89.2% increases in the average and maximum estimated evaporation, respectively, when compared to the neutral condition for a small...
journal article 2017
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Li, Nana (author), Jia, Li (author), Lu, Jing (author), Menenti, M. (author), Zhou, J. (author)
The regional surface soil heat flux (G0) estimation is very important for the large-scale land surface process modeling. However, most of the regional G0 estimation methods are based on the empirical relationship between G0 and the net radiation flux. A physical model based on harmonic analysis was improved (referred to as "HM model") and...
journal article 2017
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Abbasi, A. (author)
This research aims at developing a flexible and efficient (numerical) approach for estimating energy balance and heat storage of small shallow lakes in arid and semi-arid regions. To reach to this aim, some numerical methods and improvements in conventional methods were done. Optimizing the methods developed in this thesis is considered in order...
doctoral thesis 2016
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Abbasi, A. (author), Annor, F.O. (author), van de Giesen, N.C. (author)
An unsteady fully three-dimensional model of Lake Binaba (a shallow small reservoir) in semi-arid Upper East Region of Ghana has been developed to simulate its temperature dynamics. The model developed is built on the Reynolds Averaged Navier-Stokes (RANS) equations, utilizing the Boussinesq approach. As the results of the model are...
journal article 2016
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Akdim, N. (author), Alfieri, S.M. (author), Habibi, A. (author), Choukri, A. (author), Cheruiyot, E.K. (author), Labbassi, K. (author), Menenti, M. (author)
The appraisal of crop water requirements (CWR) is crucial for the management of water resources, especially in arid and semi-arid regions where irrigation represents the largest consumer of water, such as the Doukkala area, western Morocco. Simple and (semi) empirical approaches have been applied to estimate CWR: the first one is called Kc-NDVI...
journal article 2014
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Eilander, D.M. (author), Annor, F.O. (author), Iannini, L. (author), Van de Giesen, N.C. (author)
Multipurpose small reservoirs are important for livelihoods in rural semi-arid regions. To manage and plan these reservoirs and to assess their hydrological impact at a river basin scale, it is important to monitor their water storage dynamics. This paper introduces a Bayesian approach for monitoring small reservoirs with radar satellite images....
journal article 2014
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Makurira, H. (author)
The challenge of water scarcity as a result of insufficient seasonal rainfall and dry spell occurrences during cropping seasons is compounded by inefficient agricultural practices by smallholder farmers where insignificant soil and water conservation efforts are applied. The hypothesis of this research is that many of the past research efforts...
doctoral thesis 2010
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Temesgen, M.L. (author)
Conservation tillage systems have been adopted by farmers in many countries to solve the problem of land degradation and declining water productivity. However, direct application of such tillage systems was not possible among resource poor smallholder farmers in semi arid areas of Ethiopia. Problems such as shortage of rainfall, cost of...
doctoral thesis 2007
Searched for: subject:"aridity"
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