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The objective of this study is to present an approach to calibrate a semi-distributed hydrological model using observed streamflow data and actual evapotranspiration time series estimates based on remote sensing data. First, daily actual evapotranspiration is estimated using available MODIS satel...


Muthuwatta, Lal P.Booij, M.J.Rientjes, T.H.M.Bos, M.G.Gieske, A. S. M.Ahmad, Mobin-ud-Din[Calibration of a semi-distributed hydrological model using discharge and remote sensing data]Calibration of a semi-distributed hydrological model using discharge and remote sensing data

The aim of this study is to evaluate the hydrological impacts of climate change on the water balance of Lake Tana in Ethiopia. Impact assessments are by downscaled General Circulation Model (GCM) output and hydrological modeling. For A2 and B2 emission scenarios, precipitation, maximum and minimu...


Nigatu, Z.M.Rientjes, T.H.M.Haile, Alemseged Tamiru[Hydrological impact assessment of climate change on Lake Tana’s water balance, Ethiopia]Hydrological impact assessment of climate change on Lake Tana’s water balance, Ethiopia

In the Upper Blue Nile (UBN) basin, there is very sparse and uneven distribution of ground-based meteorological stations which constrain assessments on rainfall distributions and representation. To assess the diurnal cycle of rainfall across the UBN basin, satellite observations from Tropical Rai...


Fenta, A. A.Rientjes, T.H.M.Haile, Alemseged TamiruReggiani, P.[Satellite rainfall products and their reliability in the Blue Nile Basin]Satellite rainfall products and their reliability in the Blue Nile Basin

Spatially distributed actual evapotranspiration (ETa) values were estimated based on satellite data and the Surface Energy Balance System (SEBS) approach for the Karkheh River Basin, Iran. Nineteen cloud free MODIS (Moderate Resolution Imaging Spectroradiometer) images, representing a complete cr...


Muthuwatta, Lal P.Ahmad, Mobin-ud-DinRientjes, T.H.M.Bos, M.G.[Estimating the spatial variability of water consumption in the Karkheh River Basin, Iran - using MODIS data]Estimating the spatial variability of water consumption in the Karkheh River Basin, Iran - using MODIS data

This study was conducted to assess water availability and consumption in the Karkheh River Basin in Iran using secondary data and freely available satellite data. Precipitation was estimated using geo-statistical techniques while a Surface Energy Balance approach was selected for evapotranspirati...


Muthuwatta, Lal P.Ahmad, Mobin-ud-DinBos, M.G.Rientjes, T.H.M.[Assessment of water availability and consumption in the Karkheh River Basin, Iran using remote sensing and geo-statistics]Assessment of water availability and consumption in the Karkheh River Basin, Iran using remote sensing and geo-statistics

Two strategies are assessed to increase wheat production in the water-scarce Karkheh River Basin (KRB) in Iran to meet targets by the year 2025. The strategies proposed are (a) to increase yields in the current irrigated and rainfed wheat areas and (b) to increase the area under rainfed wheat thr...


Muthuwatta, Lal P.Rientjes, T.H.M.Bos, M.G.[Strategies to increase wheat production in the water scarce Karkheh River Basin, Iran]Strategies to increase wheat production in the water scarce Karkheh River Basin, Iran

In this study, streamflow (Qs) and satellite-based actual evapotranspiration (ETa) are used in a multi-variable calibration framework to reproduce the catchment water balance. The application is for the HBV rainfall-runoff model at daily time-step for the Karkheh River Basin (51,000 km2) in Iran....


Rientjes, T.H.M.Muthuwatta, Lal P.Bos, M.G.Booij, M.J.Bhatti, H.A.[Multi-variable calibration of a semi-distributed hydrological model using streamflow data and satellite-based evapotranspiration]Multi-variable calibration of a semi-distributed hydrological model using streamflow data and satellite-based evapotranspiration

Results of numerous evaluation studies indicated that satellite-rainfall products are contaminated with significant systematic and random errors. Therefore, such products may require refinement and correction before being used for hydrologic applications. In the present study, we explore a rainfa...


Habib, E.Haile, Alemseged TamiruSazib, N.Zhang, Y.Rientjes, T.H.M.[Effect of bias correction of satellite-rainfall estimates on runoff simulations at the source of the Upper Blue Nile]Effect of bias correction of satellite-rainfall estimates on runoff simulations at the source of the Upper Blue Nile

Availability of reliable, timely and accurate rainfall data is constraining the establishment of flood forecasting and early warning systems in many parts of Africa. We evaluated the potential of satellite and weather forecast data as input to a parsimonious flood forecasting model to provide inf...


Haile, Alemseged TamiruTefera, F.T.Rientjes, T.H.M.[Flood forecasting in Niger-Benue basin using satellite and quantitative precipitation forecast data]Flood forecasting in Niger-Benue basin using satellite and quantitative precipitation forecast data

By increased rural-urban migration in many African countries, the assessment of changes in catchment hydrologic responses due to urbanization is critical for water resource planning and management. This paper assesses hydrological impacts of urbanization on two medium-sized Zimbabwean catchments ...


Gumindoga, W.Rientjes, T.H.M.Shekede, M.D.Rwasoka, D.T.Nhapi, I.Haile, Alemseged Tamiru[Hydrological impacts of urbanization of two catchments in Harare, Zimbabwe]Hydrological impacts of urbanization of two catchments in Harare, Zimbabwe

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