Alghafli, Khaled and Ali, Awad M. and Shi, Xiaogang and Sloan, William and Obeid, Ali A.A. and Shamsudduha, Mohammad (2023) Evaluation of runoff estimation from GRACE coupled with different meteorological gridded products over the Upper Blue Nile Basin. Journal of Hydrology: Regional Studies, 50: 101545. ISSN 2214-5818
AI Summary:
The study aimed to accurately close the water balance equation for the Upper Blue Nile basin using remote sensing products. The best performing combination among various combinations was chosen by aggregating rankings attributed to both error and linear fit metrics.AI Topics:
Study Region:
The Upper Blue Nile (UBN) basin, Ethiopia.
Study Focus:
In efforts to accurately close the water balance equation for the UBN basin using remote sensing products, river runoff is calculated as a residual from the water balance equation by incorporating Gravity Recovery and Climate Experiment (GRACE) terrestrial water storage (TWS) and remote sensing products for precipitation (P) and evapotranspiration (ET). The calculated river runoff is then compared to the gauge records located at the basin’s outlet. The best performing combination among the various combinations is chosen by aggregating rankings attributed to both error and linear fit metrics. The errors associated with each satellite product were assessed by forcing the In-Situ runoff to estimate the P, ET, and TWS. This methodology helps in addressing the uncertainty linked with each hydrological component.
New Hydrological Insights for the Region:
The best P, ET, and TWS combination performance products to estimate runoff are SM2RAIN-CCI, GLEAM, and GRACE Spherical Harmonic products, respectively. The statistical results for the six metrics are R2 = 0.7, slope = 1.6, y-intercept = - 0.5 cm, RMSE = 3 cm, MAE = 2.8 cm, and PBIAS = 36%. The uncertainty from each hydrological component was quantified and showed that improving the accuracy of P and ET estimation is a crucial step to successfully close the water balance.
Alghafli, Khaled
Author
Alghafli, Khaled and Ali, Awad M. and Shi, Xiaogang and Sloan, William and Obeid, Ali A.A. and Shamsudduha, Mohammad (2023) Evaluation of runoff estimation from GRACE coupled with different meteorological gridded products over the Upper Blue Nile Basin. Journal of Hydrology: Regional Studies, 50: 101545. ISSN 2214-5818
See full publications listAli, Awad M.
Author
Alghafli, Khaled and Shi, Xiaogang and Sloan, William and Ali, Awad M. (2025) Investigating the role of ENSO in groundwater temporal variability across Abu Dhabi Emirate, United Arab Emirates using machine learning algorithms. Groundwater for Sustainable Development, 28: 101389. ISSN 2352-801X
Alghafli, Khaled and Ali, Awad M. and Shi, Xiaogang and Sloan, William and Obeid, Ali A.A. and Shamsudduha, Mohammad (2023) Evaluation of runoff estimation from GRACE coupled with different meteorological gridded products over the Upper Blue Nile Basin. Journal of Hydrology: Regional Studies, 50: 101545. ISSN 2214-5818
See full publications listShi, Xiaogang
Author
Alghafli, Khaled and Shi, Xiaogang and Sloan, William and Ali, Awad M. (2025) Investigating the role of ENSO in groundwater temporal variability across Abu Dhabi Emirate, United Arab Emirates using machine learning algorithms. Groundwater for Sustainable Development, 28: 101389. ISSN 2352-801X
Alghafli, Khaled and Ali, Awad M. and Shi, Xiaogang and Sloan, William and Obeid, Ali A.A. and Shamsudduha, Mohammad (2023) Evaluation of runoff estimation from GRACE coupled with different meteorological gridded products over the Upper Blue Nile Basin. Journal of Hydrology: Regional Studies, 50: 101545. ISSN 2214-5818
See full publications listSloan, William
Author
Cholet, Fabien and Vignola, Marta and Quinn, Dominic and Ijaz, Umer Z. and Sloan, William T. and Smith, Cindy J. (2025) Microbial ecology of drinking water biofiltration based on 16S rRNA sequencing: a meta-analysis. Water Research, 281: 123684. ISSN 0043-1354
Gupta, Rohit and Murray, Cameron and Sloan, William T. and You, Siming (2025) Predicting the methane production of microwave-pretreated anaerobic digestion of food waste: a machine learning approach. Energy. ISSN 0360-5442 (In Press)
Alghafli, Khaled and Shi, Xiaogang and Sloan, William and Ali, Awad M. (2025) Investigating the role of ENSO in groundwater temporal variability across Abu Dhabi Emirate, United Arab Emirates using machine learning algorithms. Groundwater for Sustainable Development, 28: 101389. ISSN 2352-801X
See full publications listObeid, Ali A.A.
Author
Alghafli, Khaled and Ali, Awad M. and Shi, Xiaogang and Sloan, William and Obeid, Ali A.A. and Shamsudduha, Mohammad (2023) Evaluation of runoff estimation from GRACE coupled with different meteorological gridded products over the Upper Blue Nile Basin. Journal of Hydrology: Regional Studies, 50: 101545. ISSN 2214-5818
See full publications listShamsudduha, Mohammad
Author
Alghafli, Khaled and Ali, Awad M. and Shi, Xiaogang and Sloan, William and Obeid, Ali A.A. and Shamsudduha, Mohammad (2023) Evaluation of runoff estimation from GRACE coupled with different meteorological gridded products over the Upper Blue Nile Basin. Journal of Hydrology: Regional Studies, 50: 101545. ISSN 2214-5818
See full publications listAvailable under License Creative Commons Attribution Non-commercial No Derivatives.
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