Articles | Volume 26, issue 22
https://doi.org/10.5194/hess-26-5899-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-26-5899-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
25 Nov 2022
Research article |
| 25 Nov 2022
| 25 Nov 2022
Evaluating the accuracy of gridded water resources reanalysis and evapotranspiration products for assessing water security in poorly gauged basins
Department of Geography, University of Sheffield, Sheffield S10 2TN, UK
Robert G. Bryant
Department of Geography, University of Sheffield, Sheffield S10 2TN, UK
Joshua Ntajal
Department of Geography, University of Bonn, 53115 Bonn, Germany
Eliézer I. Biao
Laboratory of Applied Hydrology, University of Abomey-Calavi (UAC),
Cotonou, Benin
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Cited
19 citations as recorded by crossref.
- Research on the coupling effect of water security and socio-economy in five economic zones of Sichuan Province, China Z. He et al. https://doi.org/10.2166/nh.2024.044
- Quantifying the effects of climate and environmental changes on evapotranspiration variability in the Sahel E. Nkiaka et al. https://doi.org/10.1016/j.jhydrol.2024.131874
- An innovative hydrological model for the sparsely-gauged Essequibo River basin, northern Amazonia D. Hughes et al. https://doi.org/10.1080/15715124.2023.2278678
- Reducing uncertainty of evapotranspiration products across China under extreme climatic conditions using flux-tower observations and machine learning L. Qian et al. https://doi.org/10.1016/j.agwat.2026.110445
- Surface flux equilibrium estimates of evaporative fraction and evapotranspiration at global scale: Accuracy evaluation and performance comparison W. Zhu et al. https://doi.org/10.1016/j.agwat.2023.108609
- Assessment of drought trends in the Aras River Basin: Spatiotemporal changes and implications for transboundary water management S. Dadparvar et al. https://doi.org/10.1016/j.ejrh.2025.102761
- Changes in climate, vegetation cover and vegetation composition affect runoff generation in the Gulf of Guinea Basin E. Nkiaka & G. Okafor https://doi.org/10.1002/hyp.15124
- Bridging scales and borders on water availability and use in the transboundary Volta River Basin: A water accounting approach A. Owusu et al. https://doi.org/10.1016/j.ejrh.2025.102377
- The potential of novel remote sensing evapotranspiration data and global soil maps for SWAT+ agro-hydrological modeling in data-scarce regions of the North Mediterranean I. Bouizrou et al. https://doi.org/10.1016/j.agwat.2025.109761
- Environmental controls on water‑carbon fluxes in winter wheat cropland under different hydrological and extreme environmental conditions in a dry semi-humid region X. Liu et al. https://doi.org/10.1016/j.ecolind.2026.114918
- Evaluating the performance of high-resolution gridded precipitation products in regions with complex topographies and high precipitation E. Nkiaka & S. Tume https://doi.org/10.1080/02626667.2025.2579875
- Gap-Filling for Daily Latent Heat Flux Observations with the Full-factorial method at Global Flux Sites X. Wang et al. https://doi.org/10.1038/s41597-025-06144-9
- Quantifying Sahel Runoff Sensitivity to Climate Variability, Soil Moisture and Vegetation Changes Using Analytical Methods E. Nkiaka et al. https://doi.org/10.1007/s41748-024-00464-3
- Comparison and Evaluation of Multi-Source Evapotranspiration Datasets in the Yarlung Zangbo River Basin Y. Jiang et al. https://doi.org/10.3390/rs18010162
- Multi-scale analysis of six evapotranspiration products across China: Accuracy, uncertainty and spatiotemporal pattern L. Zuo et al. https://doi.org/10.1016/j.jhydrol.2024.132516
- Vegetation Transpiration Drives Root-Zone Soil Moisture Depletion in Subtropical Humid Regions: Evidence from GLDAS Catchment Simulations in Fujian Province Y. Xie et al. https://doi.org/10.3390/atmos16101180
- Effects of vegetation composition changes on surface runoff and land degradation in Sahelian Watersheds E. Nkiaka et al. https://doi.org/10.1080/10106049.2025.2603048
- Accuracy Assessment of Remote Sensing-Derived Evapotranspiration Products Against Eddy Covariance Measurements in Tensift Al-Haouz Semi-Arid Region, Morocco Y. Manyari et al. https://doi.org/10.3390/atmos16121407
- High uncertainty of evapotranspiration products under extreme climatic conditions L. Qian et al. https://doi.org/10.1016/j.jhydrol.2023.130332
19 citations as recorded by crossref.
- Research on the coupling effect of water security and socio-economy in five economic zones of Sichuan Province, China Z. He et al. https://doi.org/10.2166/nh.2024.044
- Quantifying the effects of climate and environmental changes on evapotranspiration variability in the Sahel E. Nkiaka et al. https://doi.org/10.1016/j.jhydrol.2024.131874
- An innovative hydrological model for the sparsely-gauged Essequibo River basin, northern Amazonia D. Hughes et al. https://doi.org/10.1080/15715124.2023.2278678
- Reducing uncertainty of evapotranspiration products across China under extreme climatic conditions using flux-tower observations and machine learning L. Qian et al. https://doi.org/10.1016/j.agwat.2026.110445
- Surface flux equilibrium estimates of evaporative fraction and evapotranspiration at global scale: Accuracy evaluation and performance comparison W. Zhu et al. https://doi.org/10.1016/j.agwat.2023.108609
- Assessment of drought trends in the Aras River Basin: Spatiotemporal changes and implications for transboundary water management S. Dadparvar et al. https://doi.org/10.1016/j.ejrh.2025.102761
- Changes in climate, vegetation cover and vegetation composition affect runoff generation in the Gulf of Guinea Basin E. Nkiaka & G. Okafor https://doi.org/10.1002/hyp.15124
- Bridging scales and borders on water availability and use in the transboundary Volta River Basin: A water accounting approach A. Owusu et al. https://doi.org/10.1016/j.ejrh.2025.102377
- The potential of novel remote sensing evapotranspiration data and global soil maps for SWAT+ agro-hydrological modeling in data-scarce regions of the North Mediterranean I. Bouizrou et al. https://doi.org/10.1016/j.agwat.2025.109761
- Environmental controls on water‑carbon fluxes in winter wheat cropland under different hydrological and extreme environmental conditions in a dry semi-humid region X. Liu et al. https://doi.org/10.1016/j.ecolind.2026.114918
- Evaluating the performance of high-resolution gridded precipitation products in regions with complex topographies and high precipitation E. Nkiaka & S. Tume https://doi.org/10.1080/02626667.2025.2579875
- Gap-Filling for Daily Latent Heat Flux Observations with the Full-factorial method at Global Flux Sites X. Wang et al. https://doi.org/10.1038/s41597-025-06144-9
- Quantifying Sahel Runoff Sensitivity to Climate Variability, Soil Moisture and Vegetation Changes Using Analytical Methods E. Nkiaka et al. https://doi.org/10.1007/s41748-024-00464-3
- Comparison and Evaluation of Multi-Source Evapotranspiration Datasets in the Yarlung Zangbo River Basin Y. Jiang et al. https://doi.org/10.3390/rs18010162
- Multi-scale analysis of six evapotranspiration products across China: Accuracy, uncertainty and spatiotemporal pattern L. Zuo et al. https://doi.org/10.1016/j.jhydrol.2024.132516
- Vegetation Transpiration Drives Root-Zone Soil Moisture Depletion in Subtropical Humid Regions: Evidence from GLDAS Catchment Simulations in Fujian Province Y. Xie et al. https://doi.org/10.3390/atmos16101180
- Effects of vegetation composition changes on surface runoff and land degradation in Sahelian Watersheds E. Nkiaka et al. https://doi.org/10.1080/10106049.2025.2603048
- Accuracy Assessment of Remote Sensing-Derived Evapotranspiration Products Against Eddy Covariance Measurements in Tensift Al-Haouz Semi-Arid Region, Morocco Y. Manyari et al. https://doi.org/10.3390/atmos16121407
- High uncertainty of evapotranspiration products under extreme climatic conditions L. Qian et al. https://doi.org/10.1016/j.jhydrol.2023.130332
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Short summary
Achieving water security in poorly gauged regions is hindered by a lack of in situ hydrometeorological data. In this study, we validated nine existing gridded water resource reanalyses and eight evapotranspiration products in eight representative gauged basins in Central–West Africa. Our results show the strengths and and weaknesses of the existing products and that these products can be used to assess water security in ungauged basins. However, it is imperative to validate these products.
Achieving water security in poorly gauged regions is hindered by a lack of in situ...
