{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:27:32Z","timestamp":1772252852842,"version":"3.50.1"},"reference-count":107,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,3,4]],"date-time":"2021-03-04T00:00:00Z","timestamp":1614816000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100008451","name":"Binghamton University","doi-asserted-by":"publisher","award":["Provost Office"],"award-info":[{"award-number":["Provost Office"]}],"id":[{"id":"10.13039\/100008451","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This research assesses the changes in total water storage (TWS) during the twentieth century and future projections in the Nile River Basin (NRB) via TWSA (TWS anomalies) records from GRACE (Gravity Recovery and Climate Experiment), GRACE-FO (Follow-On), data-driven-reanalysis TWSA and a land surface model (LSM), in association with precipitation, temperature records, and standard drought indicators. The analytical approach incorporates the development of 100+ yearlong TWSA records using a probabilistic conditional distribution fitting approach by the GAMLSS (generalized additive model for location, scale, and shape) model. The model performance was tested using standard indicators including coevolution plots, the Nash\u2013Sutcliffe coefficient, cumulative density function, standardized residuals, and uncertainty bounds. All model evaluation results are satisfactory to excellent. The drought and flooding severity\/magnitude, duration, and recurrence frequencies were assessed during the studied period. The results showed, (1) The NRB between 2002 to 2020 has witnessed a substantial transition to wetter conditions. Specifically, during the wet season, the NRB received between ~50 Gt.\/yr. to ~300 Gt.\/yr. compared to ~30 Gt.\/yr. to ~70 Gt.\/yr. of water loss during the dry season. (2) The TWSA reanalysis records between 1901 to 2002 revealed that the NRB had experienced a positive increase in TWS of ~17% during the wet season. Moreover, the TWS storage had witnessed a recovery of ~28% during the dry season. (3) The projected TWSA between 2021 to 2050 unveiled a positive increase in the TWS during the rainy season. While during the dry season, the water storage showed insubstantial TWS changes. Despite these projections, the future storage suggested a reduction between 10 to 30% in TWS. The analysis of drought and flooding frequencies between 1901 to 2050 revealed that the NRB has ~64 dry-years compared to ~86 wet-years. The exceedance probabilities for the normal conditions are between 44 to 52%, relative to a 4% chance of extreme events. The recurrence interval of the normal to moderate wet or dry conditions is ~6 years. These TWSA trajectories call for further water resources planning in the region, especially during flood seasons. This research contributes to the ongoing efforts to improve the TWSA assessment and its associated dynamics for transboundary river basins.<\/jats:p>","DOI":"10.3390\/rs13050953","type":"journal-article","created":{"date-parts":[[2021,3,4]],"date-time":"2021-03-04T01:41:53Z","timestamp":1614822113000},"page":"953","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Twentieth and Twenty-First Century Water Storage Changes in the Nile River Basin from GRACE\/GRACE-FO and Modeling"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8337-0423","authenticated-orcid":false,"given":"Emad","family":"Hasan","sequence":"first","affiliation":[{"name":"Department of Geological Sciences and Environmental Studies, State University of New York, SUNY at Binghamton, Vestal, NY 13850, USA"},{"name":"Geology Department, Faculty of Science, Damietta University, New Damietta 34518, Egypt"}]},{"given":"Aondover","family":"Tarhule","sequence":"additional","affiliation":[{"name":"Department of Geography, Geology, and the Environment, Illinois State University, Normal, IL 61790, USA"}]},{"given":"Pierre-Emmanuel","family":"Kirstetter","sequence":"additional","affiliation":[{"name":"School of Meteorology, University of Oklahoma, Norman, OK 73072, USA"},{"name":"School of Civil Engineering and Environmental Science, University of Oklahoma, Norman, OK 73072, USA"},{"name":"NOAA\/National Severe Storms Laboratory, Norman, OK 73072, USA"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,4]]},"reference":[{"key":"ref_1","unstructured":"Shahin, M. (1985). Hydrology of the Nile Basin, Elsevier Science Publishing Company Inc."},{"key":"ref_2","unstructured":"Sutcliffe, J.V., and Parks, Y.P. (1999). The Hydrology of the Nile, The International Water Management Institute. IAHS Special Publication no. 5."},{"key":"ref_3","unstructured":"Collins, R. (2002). The Nile, Yale University Press."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Said, R. (1981). The Geological Evolution of the River Nile, Springer.","DOI":"10.1007\/978-1-4612-5841-4"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1080\/02626667.2011.577037","article-title":"Challenges for water sharing in the Nile basin: Changing geo-politics and changing climate","volume":"56","author":"Swain","year":"2011","journal-title":"Hydrol. Sci. J."},{"key":"ref_6","unstructured":"Karyabwite, D.R. (2000). Water Sharing in the Nile River Valley, UNEP\/DEWA\/GRID."},{"key":"ref_7","unstructured":"Oestigaard, T. (2010). Nile Issues, Small Streams from the Nile Basin Research Programme, Fountain Publishers."},{"key":"ref_8","unstructured":"Arsano, Y. (2007). Ethiopia and the Nile, Center for Security Studies (CSS)."},{"key":"ref_9","unstructured":"Seid, A.H., Mbuliro, M., and Alarabawy, M. (2017). Nile Basin Water Resources Atlas, Nile Basin Initiative (NBI)."},{"key":"ref_10","unstructured":"Haub, C., and Kaneda, T. (2019, March 01). 2013 World Population Data Sheet: Population Reference Bureau (PRB). Available online: https:\/\/www.prb.org\/2013-world-population-data-sheet\/."},{"key":"ref_11","unstructured":"Abu-Zeid, M. (1983). The river Nile: Main water transfer projects in Egypt and impacts on Egyptian agriculture. Long-Distance Water Transfer, Tycooly International Publishing Ltd."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1016\/j.scitotenv.2018.02.249","article-title":"Quantifying and evaluating the impacts of cooperation in transboundary river basins on the Water-Energy-Food nexus: The Blue Nile Basin","volume":"630","author":"Basheer","year":"2018","journal-title":"Sci. Total Environ."},{"key":"ref_13","unstructured":"Oestigaard, T. (2012). Water Scarcity and Food Security Along the Nile Politics, Population Increase and Climate Change, Nordiska Afrikainstitutet."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Turhan, Y. (2020). The hydro-political dilemma in Africa water geopolitics: The case of the Nile river basin. Afr. Secur. Rev., 1\u201320.","DOI":"10.1080\/10246029.2020.1844775"},{"key":"ref_15","first-page":"2","article-title":"Who owns the Nile? Egypt, Sudan, and Ethiopia\u2019s history-changing dam","volume":"6","author":"Carlson","year":"2013","journal-title":"Origins"},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Ayele, H., Li, M.-H., Tung, C.-P., and Liu, T.-M. (2016). Impact of Climate Change on Runoff in the Gilgel Abbay Watershed, the Upper Blue Nile Basin, Ethiopia. Water, 8.","DOI":"10.3390\/w8090380"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1038\/nclimate3285","article-title":"Water resources: Future Nile river flows","volume":"7","author":"Conway","year":"2017","journal-title":"Nat. Clim. Chang."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"5149","DOI":"10.5194\/hess-18-5149-2014","article-title":"Analyzing runoff processes through conceptual hydrological modeling in the Upper Blue Nile Basin, Ethiopia","volume":"18","author":"Dessie","year":"2014","journal-title":"Hydrol. Earth Syst. Sci."},{"key":"ref_19","first-page":"66","article-title":"The vulnerability of runoff in the Nile basin to climatic changes","volume":"13","author":"Gleick","year":"1991","journal-title":"Environ. Prof."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"312","DOI":"10.1016\/j.jhydrol.2018.04.004","article-title":"Runoff sensitivity to climate change in the Nile River Basin","volume":"561","author":"Hasan","year":"2018","journal-title":"J. Hydrol."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1659\/0276-4741(2005)025[0147:TIOCIP]2.0.CO;2","article-title":"The Implications of Changes in Population, Land Use, and Land Management for Surface Runoff in the Upper Nile Basin Area of Ethiopia","volume":"25","author":"Hurni","year":"2005","journal-title":"Mt. Res. Dev."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1016\/j.jhydrol.2005.05.011","article-title":"Water balance of Lake Tana and its sensitivity to fluctuations in rainfall, Blue Nile basin, Ethiopia","volume":"316","author":"Kebede","year":"2006","journal-title":"J. Hydrol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.jhydrol.2009.03.008","article-title":"Monitoring the water balance of Lake Victoria, East Africa, from space","volume":"370","author":"Swenson","year":"2009","journal-title":"J. Hydrol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.advwatres.2014.06.010","article-title":"Water storage changes and climate variability within the Nile Basin between 2002 and 2011","volume":"73","author":"Awange","year":"2014","journal-title":"Adv. Water Resour"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"915","DOI":"10.1016\/j.scitotenv.2018.10.279","article-title":"Improved remotely sensed satellite products for studying Lake Victoria\u2019s water storage changes","volume":"652","author":"Khaki","year":"2019","journal-title":"Sci. Total Environ."},{"key":"ref_26","first-page":"4501","article-title":"Interpretation of GRACE data of the Nile Basin using a groundwater recharge model","volume":"7","author":"Bonsor","year":"2010","journal-title":"Hydrol. Earth Syst. Sci. Discuss."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Shamsudduha, M., Taylor, R.G., and Longuevergne, L. (2012). Monitoring groundwater storage changes in the highly seasonal humid tropics: Validation of GRACE measurements in the Bengal Basin. Water Resour. Res., 48.","DOI":"10.1029\/2011WR010993"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1016\/j.gloenvcha.2005.01.003","article-title":"From headwater tributaries to international river: Observing and adapting to climate variability and change in the Nile basin","volume":"15","author":"Conway","year":"2005","journal-title":"Global Environ. Chang."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1080\/07900629650178","article-title":"The Impacts of Climate Variability and Future Climate Change in the Nile Basin on Water Resources in Egypt","volume":"12","author":"Conway","year":"1996","journal-title":"Int. J. Water Resour. Dev."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Hasan, E., and Tarhule, A. (2020). GRACE: Gravity Recovery and Climate Experiment long-term trend investigation over the Nile River Basin: Spatial variability drivers. J. Hydrol., 586.","DOI":"10.1016\/j.jhydrol.2020.124870"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"12327","DOI":"10.1038\/s41598-019-48813-x","article-title":"+50 Years of Terrestrial Hydroclimatic Variability in Africa\u2019s Transboundary Waters","volume":"9","author":"Hasan","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/j.geog.2016.03.002","article-title":"Water storage changes and balances in Africa observed by GRACE and hydrologic models","volume":"7","author":"Hassan","year":"2016","journal-title":"Geod. Geodyn."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1405","DOI":"10.1016\/j.scitotenv.2018.04.159","article-title":"Understanding linkages between global climate indices and terrestrial water storage changes over Africa using GRACE products","volume":"635","author":"Anyah","year":"2018","journal-title":"Sci. Total Environ."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1509","DOI":"10.1016\/j.scitotenv.2018.07.212","article-title":"Understanding the association between climate variability and the Nile\u2019s water level fluctuations and water storage changes during 1992\u20132016","volume":"645","author":"Khaki","year":"2018","journal-title":"Sci. Total Environ."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"649","DOI":"10.1007\/s10661-015-4868-9","article-title":"Investigation of potential sea level rise impact on the Nile Delta, Egypt using digital elevation models","volume":"187","author":"Hasan","year":"2015","journal-title":"Environ. Monit Assess."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2007WR006057","article-title":"Estimating profile soil moisture and groundwater variations using GRACE and Oklahoma Mesonet soil moisture data","volume":"44","author":"Swenson","year":"2008","journal-title":"Water Resour. Res."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1175\/JHM478.1","article-title":"Estimating Large-Scale Precipitation Minus Evapotranspiration from GRACE Satellite Gravity Measurements","volume":"7","author":"Swenson","year":"2006","journal-title":"J. Hydrometeorol."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"503","DOI":"10.1126\/science.1099192","article-title":"GRACE Measurements of Mass Variability in the Earth System","volume":"305","author":"Tapley","year":"2004","journal-title":"Science"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"358","DOI":"10.1038\/s41558-019-0456-2","article-title":"Contributions of GRACE to understanding climate change","volume":"9","author":"Tapley","year":"2019","journal-title":"Nat. Clim. Chang."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Scanlon, B.R., Zhang, Z., Rateb, A., Sun, A., Wiese, D., Save, H., Beaudoing, H., Lo, M.H., M\u00fcller-Schmied, H., and D\u00f6ll, P. (2019). Tracking Seasonal Fluctuations in Land Water Storage Using Global Models and GRACE Satellites. Geophys. Res. Lett.","DOI":"10.1029\/2018GL081836"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"E1080","DOI":"10.1073\/pnas.1704665115","article-title":"Global models underestimate large decadal declining and rising water storage trends relative to GRACE satellite data","volume":"115","author":"Scanlon","year":"2018","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"5885","DOI":"10.3390\/rs6075885","article-title":"Evapotranspiration Variability and Its Association with Vegetation Dynamics in the Nile Basin, 2002\u20132011","volume":"6","author":"Alemu","year":"2014","journal-title":"Remote Sens."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"967","DOI":"10.1029\/2019EF001247","article-title":"Future Hot and Dry Years Worsen Nile Basin Water Scarcity Despite Projected Precipitation Increases","volume":"7","author":"Coffel","year":"2019","journal-title":"Earth\u2019s Future"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"3747","DOI":"10.1002\/hyp.7893","article-title":"Trends in Rainfall and Runoff in the Blue Nile Basin: 1964\u20132003","volume":"24","author":"Tesemma","year":"2010","journal-title":"Hydrol. Process."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"551","DOI":"10.5194\/hess-13-551-2009","article-title":"Impacts of climate change on Blue Nile flows using bias-corrected GCM scenarios","volume":"13","author":"Elshamy","year":"2009","journal-title":"Hydrol. Earth Syst. Sci."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1038\/nclimate3273","article-title":"Climate change enhances interannual variability of the Nile river flow","volume":"7","author":"Siam","year":"2017","journal-title":"Nat. Clim. Chang."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"644","DOI":"10.1002\/2015WR017251","article-title":"Estimation of evaporation over the upper Blue Nile basin by combining observations from satellites and river flow gauges","volume":"52","author":"Allam","year":"2016","journal-title":"Water Resour. Res."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1080\/15715124.2016.1228656","article-title":"Nile River Basin modelling for water resources management\u2014A literature review","volume":"15","author":"Digna","year":"2016","journal-title":"Int. J. River Basin Manag."},{"key":"ref_49","doi-asserted-by":"crossref","unstructured":"Dile, Y.T., Berndtsson, R., and Setegn, S.G. (2013). Hydrological response to climate change for Gilgel Abay River, in the Lake Tana Basin -Upper Blue Nile Basin of Ethiopia. PLoS ONE, 8.","DOI":"10.1371\/journal.pone.0079296"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"8625","DOI":"10.1002\/2013WR015231","article-title":"Understanding the hydrologic sources and sinks in the Nile Basin using multisource climate and remote sensing data sets","volume":"50","author":"Senay","year":"2014","journal-title":"Water Resour. Res."},{"key":"ref_51","doi-asserted-by":"crossref","unstructured":"Ayehu, G., Tadesse, T., and Gessesse, B. (2020). Monitoring Residual Soil Moisture and Its Association to the Long-Term Variability of Rainfall over the Upper Blue Nile Basin in Ethiopia. Remote Sens., 12.","DOI":"10.3390\/rs12132138"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1175\/2011EI382.1","article-title":"Flood Pulsing in the Sudd Wetland: Analysis of Seasonal Variations in Inundation and Evaporation in South Sudan","volume":"16","author":"Rebelo","year":"2012","journal-title":"Earth Interact."},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Abdelwares, M., Lelieveld, J., Zittis, G., Haggag, M., and Wagdy, A. (2020). A comparison of gridded datasets of precipitation and temperature over the Eastern Nile Basin region. Euro-Mediterr. J. Environ. Integr., 5.","DOI":"10.1007\/s41207-019-0140-y"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"134834","DOI":"10.1016\/j.scitotenv.2019.134834","article-title":"Evaluation of satellite rainfall products for modeling water yield over the source region of Blue Nile Basin","volume":"708","author":"Belete","year":"2020","journal-title":"Sci. Total Environ."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"935","DOI":"10.1175\/JHM-D-19-0233.1","article-title":"Evaluation of Global Water Resources Reanalysis Products in the Upper Blue Nile River Basin","volume":"21","author":"Koukoula","year":"2020","journal-title":"J. Hydrometeorol."},{"key":"ref_56","doi-asserted-by":"crossref","unstructured":"Yitayew, M., and Melesse, A.M. (2011). Critical Water Resources Issues in the Nile River Basin. Nile River Basin, Springer.","DOI":"10.1007\/978-94-007-0689-7_20"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1007\/s40899-015-0035-2","article-title":"Water bankruptcy in the mighty Nile river basin","volume":"2","author":"Degefu","year":"2015","journal-title":"Sustain. Water Resour. Manag."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"4533","DOI":"10.5194\/hess-21-4533-2017","article-title":"Recent changes in terrestrial water storage in the Upper Nile Basin: An evaluation of commonly used gridded GRACE products","volume":"21","author":"Shamsudduha","year":"2017","journal-title":"Hydrol. Earth Syst. Sci."},{"key":"ref_59","doi-asserted-by":"crossref","unstructured":"Lakew, H.B., Moges, S.A., and Asfaw, D.H. (2020). Hydrological performance evaluation of multiple satellite precipitation products in the upper Blue Nile basin, Ethiopia. J. Hydrol. Reg. Stud., 27.","DOI":"10.1016\/j.ejrh.2020.100664"},{"key":"ref_60","doi-asserted-by":"crossref","unstructured":"Bayissa, Y., Maskey, S., Tadesse, T., van Andel, S., Moges, S., van Griensven, A., and Solomatine, D. (2018). Comparison of the Performance of Six Drought Indices in Characterizing Historical Drought for the Upper Blue Nile Basin, Ethiopia. Geosciences, 8.","DOI":"10.3390\/geosciences8030081"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"4817","DOI":"10.5194\/hess-17-4817-2013","article-title":"GRACE water storage estimates for the Middle East and other regions with significant reservoir and lake storage","volume":"17","author":"Longuevergne","year":"2013","journal-title":"Hydrol. Earth Syst. Sci."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"1275","DOI":"10.1007\/s11269-017-1869-1","article-title":"A Global Hydrological Drought Index Dataset Based on Gravity Recovery and Climate Experiment (GRACE) Data","volume":"32","author":"Nie","year":"2017","journal-title":"Water Resour. Manag."},{"key":"ref_63","doi-asserted-by":"crossref","unstructured":"Woodward, J., Welsby, D., and Macklin, M. (2001). The Holocene fluvial sedimentary record and alluvial geoarchaeology in the Nile Valley of northern Sudan. River Basin Sediment Systems\u2014Archives of Environmental Change, Taylor & Francis Group.","DOI":"10.1201\/9781439824672.pt4"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1080\/02626667.2018.1438612","article-title":"Water losses from the Sudd","volume":"63","author":"Sutcliffe","year":"2018","journal-title":"Hydrol. Sci. J."},{"key":"ref_65","doi-asserted-by":"crossref","unstructured":"Hasan, E., Tarhule, A., Hong, Y., and Moore, B. (2019). Assessment of Physical Water Scarcity in Africa Using GRACE and TRMM Satellite Data. Remote Sens., 11.","DOI":"10.3390\/rs11080904"},{"key":"ref_66","doi-asserted-by":"crossref","unstructured":"Melesse, A., Abtew, W., and Setegn, S.G. (2014). Climate Change Impacts and Development-Based Adaptation Pathway to the Nile River Basi, Springer International Publishing Switzerland.","DOI":"10.1007\/978-3-319-02720-3"},{"key":"ref_67","unstructured":"Abu-Zeid, M., and Shiklomanov, I.A. (2004). Water Resources as a Challenge of the Twenty-First Century, World Meteorological Organization."},{"key":"ref_68","doi-asserted-by":"crossref","unstructured":"Dumont, H.J. (2009). Nile Basin Climates. The Nile: Origin, Environments, Limnology and Human Use, Springer, Monographiae Biologicae.","DOI":"10.1007\/978-1-4020-9726-3"},{"key":"ref_69","unstructured":"NBI (2012). State of River Nile Basin 2012, Nile Basin Initiative (NBI)."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2011WR011453","article-title":"Accuracy of scaled GRACE terrestrial water storage estimates","volume":"48","author":"Landerer","year":"2012","journal-title":"Water Resour. Res."},{"key":"ref_71","unstructured":"Save, H. (2019). CSR GRACE RL06 Mascon Solutions, Texas Data Repository Dataverse, University of Texas at Austin. [V1 ed.]."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"7547","DOI":"10.1002\/2016JB013007","article-title":"High-resolution CSR GRACE RL05 mascons","volume":"121","author":"Save","year":"2016","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"2648","DOI":"10.1002\/2014JB011547","article-title":"Improved methods for observing Earth\u2019s time variable mass distribution with GRACE using spherical cap mascons","volume":"120","author":"Watkins","year":"2015","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1175\/BAMS-85-3-381","article-title":"The Global Land Data Assimilation System","volume":"85","author":"Rodell","year":"2004","journal-title":"Bams"},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"7564","DOI":"10.1029\/2018WR024618","article-title":"Global GRACE Data Assimilation for Groundwater and Drought Monitoring: Advances and Challenges","volume":"55","author":"Li","year":"2019","journal-title":"Water Resour. Res."},{"key":"ref_76","unstructured":"Li, B., Beaudoing, H., Rodell, M., and NASA\/GSFC\/HSL (2018). GLDAS Catchment Land Surface Model L4 daily 0.25 \u00d7 0.25 Degree V2.0 [Dataset]."},{"key":"ref_77","unstructured":"Schneider, U., Becker, A., Meyer-Christoffer, A., Ziese, M., and Rudolf, B. (2011). Global Precipitation Analysis Products of the GPCC, Deutscher Wetterdienst, Offenbach a. M."},{"key":"ref_78","doi-asserted-by":"crossref","unstructured":"Schneider, U., Finger, P., Meyer-Christoffer, A., Rustemeier, E., Ziese, M., and Becker, A. (2017). Evaluating the Hydrological Cycle over Land Using the Newly-Corrected Precipitation Climatology from the Global Precipitation Climatology Centre (GPCC). Atmosphere, 8.","DOI":"10.3390\/atmos8030052"},{"key":"ref_79","unstructured":"CRU (2015). Climate Research Unite Data, University of East Anglia. CRU[Dataset]."},{"key":"ref_80","unstructured":"Osborn, T.J. (2009). A User Guide for ClimGen: A Flexible Tool for Generating Monthly Climate Data Sets and Scenarios, Climatic Research Unit (CRU), School of Environmental Sciences, University of East Anglia."},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1007\/s10584-015-1509-9","article-title":"Pattern scaling using ClimGen: Monthly-resolution future climate scenarios including changes in the variability of precipitation","volume":"134","author":"Osborn","year":"2015","journal-title":"Clim. Chang."},{"key":"ref_82","doi-asserted-by":"crossref","unstructured":"Watterson, I.G., and Whetton, P.H. (2011). Distributions of decadal means of temperature and precipitation change under global warming. J. Geophys. Res., 116.","DOI":"10.1029\/2010JD014502"},{"key":"ref_83","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1023\/A:1026035305597","article-title":"Pattern Scaling: An Examination of the Accuracy of the Technique for Describing Future Climates","volume":"60","author":"Mitchell","year":"2003","journal-title":"Clim. Chang."},{"key":"ref_84","unstructured":"Finger, P., Ziese, M., Meyer-Christoffer, A., Schneider, U., and Becker, A. (2015). GPCC Interpolation Test Dataset at 1.0\u00b0, Global Precipitation Climatology Centre (GPCC) at Deutscher Wetterdienst."},{"key":"ref_85","unstructured":"Beguer\u00eda, S., and Vicente, S. (2020, April 01). SPEIbase v.2.6 [Dataset]: DIGITAL.CSIC. Available online: http:\/\/hdl.handle.net\/10261\/202305."},{"key":"ref_86","unstructured":"Zhong, R., Chen, X., Wang, Z., Lai, C., Goddard, S., Wells, N., and Hayes, M. (2019, March 10). scPDSI: Calculation of the Conventional and Self-Calibrating Palmer Drought Severity Index, v. 0.1.3: R package V. 0.1.3. Available online: https:\/\/CRAN.R-project.org\/package=scPDSI."},{"key":"ref_87","unstructured":"Beguer\u00eda, S., and Vicente, S. (2017, July 14). SPI Calculator: DIGITAL.CSIC. Available online: http:\/\/hdl.handle.net\/10261\/10006."},{"key":"ref_88","doi-asserted-by":"crossref","first-page":"507","DOI":"10.1111\/j.1467-9876.2005.00510.x","article-title":"Generalized additive models for location, scale and shape","volume":"54","author":"Rigby","year":"2005","journal-title":"J. R. Stat. Soc."},{"key":"ref_89","unstructured":"Akantziliotou, C., Rigby, R., and Stasinopoulos, D. (2002). The R implementation of generalized additive models for location, scale and shape. Statistical Modelling in Society, Proceedings of the 17th International Workshop on Statistical Modelling, Chania, Crete, 8\u201312 July 2002, Statistical Modelling Society."},{"key":"ref_90","first-page":"1","article-title":"Generalized additive models for location scale and shape (GAMLSS) in R","volume":"10","author":"Stasinopoulos","year":"2007","journal-title":"J. Stat. Softw."},{"key":"ref_91","unstructured":"Stasinopoulos, M., Rigby, B., Voudouris, V., Akantziliotou, C., Enea, M., and Kiose, D. (2020, October 21). Gamlss: Generalised Additive Models for Location Scale and Shape: R package V 5.2-0. Available online: https:\/\/www.gamlss.com\/."},{"key":"ref_92","doi-asserted-by":"crossref","unstructured":"Jing, W., Di, L., Zhao, X., Yao, L., Xia, X., Liu, Y., Yang, J., Li, Y., and Zhou, C. (2020). A data-driven approach to generate past GRACE-like terrestrial water storage solution by calibrating the land surface model simulations. Adv. Water Resour., 143.","DOI":"10.1016\/j.advwatres.2020.103683"},{"key":"ref_93","doi-asserted-by":"crossref","unstructured":"Ahmed, M., Sultan, M., Elbayoumi, T., and Tissot, P. (2019). Forecasting GRACE Data over the African Watersheds Using Artificial Neural Networks. Remote Sens., 11.","DOI":"10.3390\/rs11151769"},{"key":"ref_94","doi-asserted-by":"crossref","first-page":"1117","DOI":"10.1038\/s41598-020-80752-w","article-title":"Reconstructing GRACE-type time-variable gravity from the Swarm satellites","volume":"11","author":"Richter","year":"2021","journal-title":"Sci. Rep."},{"key":"ref_95","unstructured":"Hyndman, R.J., Athanasopoulos, G., Bergmeir, C., Caceres, G., Chhay, L., O\u2019Hara-Wild, M., Petropoulos, F., Razbash, S., Wang, E., and Yasmeen, F. (2020, October 30). Forecast: Forecasting Functions for Time Series and Linear Models: R package V. 8.3. Available online: https:\/\/cloud.r-project.org\/web\/packages\/forecast\/index.html."},{"key":"ref_96","doi-asserted-by":"crossref","first-page":"9412","DOI":"10.1002\/2016WR019494","article-title":"Global evaluation of new GRACE mascon products for hydrologic applications","volume":"52","author":"Scanlon","year":"2016","journal-title":"Water Resour. Res."},{"key":"ref_97","doi-asserted-by":"crossref","unstructured":"Tiwari, V.M., Wahr, J., and Swenson, S. (2009). Dwindling groundwater resources in northern India, from satellite gravity observations. Geophys. Res. Lett., 36.","DOI":"10.1029\/2009GL039401"},{"key":"ref_98","doi-asserted-by":"crossref","unstructured":"Rodionov, S.N. (2006). Use of prewhitening in climate regime shift detection. Geophys. Res. Lett., 33.","DOI":"10.1029\/2006GL025904"},{"key":"ref_99","doi-asserted-by":"crossref","first-page":"430","DOI":"10.1016\/j.geog.2019.07.004","article-title":"Hydrological mass variations in the Nile River Basin from GRACE and hydrological models","volume":"10","author":"Jin","year":"2019","journal-title":"Geod. Geodyn."},{"key":"ref_100","unstructured":"FAO (2016). AQUASTAT\u2014FAO\u2019s Information System on Water and Agriculture, Food and Agriculture Organization (FAO)."},{"key":"ref_101","doi-asserted-by":"crossref","first-page":"533","DOI":"10.5194\/hess-15-533-2011","article-title":"Past terrestrial water storage (1980\u20132008) in the Amazon Basin reconstructed from GRACE and in situ river gauging data","volume":"15","author":"Becker","year":"2011","journal-title":"Hydrol. Earth Syst. Sci."},{"key":"ref_102","unstructured":"Nerem, S.R., Talpe, M., Pilinski, E., Lemoine, F.G., and Chinn, D.S. (2013). Reconstruction of Greenland and Antarctica Mass Changes Prior to the GRACE Mission, EGU General Assembly."},{"key":"ref_103","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1007\/s11269-015-1161-1","article-title":"Reconstructed Terrestrial Water Storage Change (\u0394TWS) from 1948 to 2012 over the Amazon Basin with the Latest GRACE and GLDAS Products","volume":"30","author":"Nie","year":"2015","journal-title":"Water Resour. Manag."},{"key":"ref_104","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1016\/j.geog.2015.03.004","article-title":"Variations in China\u2019s terrestrial water storage over the past decade using GRACE data","volume":"6","author":"Zhao","year":"2015","journal-title":"Geod. Geodyn."},{"key":"ref_105","doi-asserted-by":"crossref","unstructured":"Taye, M., Sahlu, D., Zaitchik, B.F., and Neka, M. (2020). Evaluation of Satellite Rainfall Estimates for Meteorological Drought Analysis over the Upper Blue Nile Basin, Ethiopia. Geosciences, 10.","DOI":"10.3390\/geosciences10090352"},{"key":"ref_106","unstructured":"Tessema, R.S. (2007). Agricultural Drought Assessment for Upper Blue Nile Basin, Ethiopia Using SWAT, UNESCO-IHE Institute for Water Education."},{"key":"ref_107","unstructured":"Wilkinson, T. (2014). The Nile: A Journey Downriver through Egypt\u2019s Past and Present, Knopf Doubleday Publishing Group."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/5\/953\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:32:22Z","timestamp":1760160742000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/5\/953"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,4]]},"references-count":107,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2021,3]]}},"alternative-id":["rs13050953"],"URL":"https:\/\/doi.org\/10.3390\/rs13050953","relation":{"has-preprint":[{"id-type":"doi","id":"10.20944\/preprints202101.0357.v1","asserted-by":"object"}]},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,3,4]]}}}