Articles | Volume 21, issue 9
https://doi.org/10.5194/hess-21-4533-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-21-4533-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
12 Sep 2017
Research article |
| 12 Sep 2017
Recent changes in terrestrial water storage in the Upper Nile Basin: an evaluation of commonly used gridded GRACE products
Mohammad Shamsudduha
CORRESPONDING AUTHOR
Institute for Risk and Disaster Reduction, University College London, London, UK
Department of Geography, University College London, London, UK
Richard G. Taylor
Department of Geography, University College London, London, UK
Darren Jones
Centre for Geography, Environment and Society, University of Exeter, Exeter, UK
Laurent Longuevergne
CNRS – UMR 6118 Géosciences Rennes, Université de Rennes 1, Rennes, France
Michael Owor
Department of Geology & Petroleum Studies, Makerere University, Kampala, Uganda
Callist Tindimugaya
Directorate of Water Resources Management, Ministry of Water & Environment, Entebbe, Uganda
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Subject: Groundwater hydrology | Techniques and Approaches: Remote Sensing and GIS
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Applicability of Landsat 8 thermal infrared sensor for identifying submarine groundwater discharge springs in the Mediterranean Sea basin
Unsaturated zone model complexity for the assimilation of evapotranspiration rates in groundwater modelling
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Estimating long-term groundwater storage and its controlling factors in Alberta, Canada
Mapping irrigation potential from renewable groundwater in Africa – a quantitative hydrological approach
How to identify groundwater-caused thermal anomalies in lakes based on multi-temporal satellite data in semi-arid regions
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Pierre Seraphin, Julio Gonçalvès, Bruno Hamelin, Thomas Stieglitz, and Pierre Deschamps
Hydrol. Earth Syst. Sci., 26, 5757–5771, https://doi.org/10.5194/hess-26-5757-2022, https://doi.org/10.5194/hess-26-5757-2022, 2022
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This study assesses the detailed water budget of the Saq–Ram Aquifer System using satellite gravity data. Spatial heterogeneities regarding the groundwater recharge were identified: (i) irrigation excess is great enough to artificially recharge the aquifer; and (ii) volcanic lava deposits, which cover 8% of the domain, contribute to more than 50% of the total natural recharge. This indicates a major control of geological context on arid aquifer recharge, which has been poorly discussed hitherto.
Claire Pascal, Sylvain Ferrant, Adrien Selles, Jean-Christophe Maréchal, Abhilash Paswan, and Olivier Merlin
Hydrol. Earth Syst. Sci., 26, 4169–4186, https://doi.org/10.5194/hess-26-4169-2022, https://doi.org/10.5194/hess-26-4169-2022, 2022
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This paper presents a new validation method for the downscaling of GRACE (Gravity Recovery and Climate Experiment) data. It measures the improvement of the downscaled data against the low-resolution data in both temporal and, for the first time, spatial domains. This validation method offers a standardized and comprehensive framework to interpret spatially and temporally the quality of the downscaled products, supporting future efforts in GRACE downscaling methods.
Víctor Gómez-Escalonilla, Pedro Martínez-Santos, and Miguel Martín-Loeches
Hydrol. Earth Syst. Sci., 26, 221–243, https://doi.org/10.5194/hess-26-221-2022, https://doi.org/10.5194/hess-26-221-2022, 2022
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Many communities in the Sahel rely solely on groundwater. We develop a machine learning technique to map areas of groundwater potential. Algorithms are trained to detect areas where there is a confluence of factors that facilitate groundwater occurrence. Our contribution focuses on using variable scaling to minimize expert bias and on testing our results beyond standard metrics. This approach is illustrated through its application to two administrative regions of Mali.
Sònia Jou-Claus, Albert Folch, and Jordi Garcia-Orellana
Hydrol. Earth Syst. Sci., 25, 4789–4805, https://doi.org/10.5194/hess-25-4789-2021, https://doi.org/10.5194/hess-25-4789-2021, 2021
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Simone Gelsinari, Valentijn R. N. Pauwels, Edoardo Daly, Jos van Dam, Remko Uijlenhoet, Nicholas Fewster-Young, and Rebecca Doble
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Estimates of recharge to groundwater are often driven by biophysical processes occurring in the soil column and, particularly in remote areas, are also always affected by uncertainty. Using data assimilation techniques to merge remotely sensed observations with outputs of numerical models is one way to reduce this uncertainty. Here, we show the benefits of using such a technique with satellite evapotranspiration rates and coupled hydrogeological models applied to a semi-arid site in Australia.
Mathias Maillot, Nicolas Flipo, Agnès Rivière, Nicolas Desassis, Didier Renard, Patrick Goblet, and Marc Vincent
Hydrol. Earth Syst. Sci., 23, 4835–4849, https://doi.org/10.5194/hess-23-4835-2019, https://doi.org/10.5194/hess-23-4835-2019, 2019
Soumendra N. Bhanja, Xiaokun Zhang, and Junye Wang
Hydrol. Earth Syst. Sci., 22, 6241–6255, https://doi.org/10.5194/hess-22-6241-2018, https://doi.org/10.5194/hess-22-6241-2018, 2018
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The paper presents groundwater storage conditions in all the major river basins across Alberta, Canada. We used remote-sensing data and investigate their performance using available ground-based data of groundwater level monitoring, storage coefficients, aquifer thickness, and surface water measurements. The water available for groundwater recharge has been studied in detail. Separate approaches have been followed for confined and unconfined aquifers for estimating groundwater storage.
Y. Altchenko and K. G. Villholth
Hydrol. Earth Syst. Sci., 19, 1055–1067, https://doi.org/10.5194/hess-19-1055-2015, https://doi.org/10.5194/hess-19-1055-2015, 2015
U. Mallast, R. Gloaguen, J. Friesen, T. Rödiger, S. Geyer, R. Merz, and C. Siebert
Hydrol. Earth Syst. Sci., 18, 2773–2787, https://doi.org/10.5194/hess-18-2773-2014, https://doi.org/10.5194/hess-18-2773-2014, 2014
P. Gbolo and P. Gerla
Hydrol. Earth Syst. Sci., 17, 4897–4906, https://doi.org/10.5194/hess-17-4897-2013, https://doi.org/10.5194/hess-17-4897-2013, 2013
A. Pryet, N. d'Ozouville, S. Violette, B. Deffontaines, and E. Auken
Hydrol. Earth Syst. Sci., 16, 4571–4579, https://doi.org/10.5194/hess-16-4571-2012, https://doi.org/10.5194/hess-16-4571-2012, 2012
F. Alkhaier, G. N. Flerchinger, and Z. Su
Hydrol. Earth Syst. Sci., 16, 1817–1831, https://doi.org/10.5194/hess-16-1817-2012, https://doi.org/10.5194/hess-16-1817-2012, 2012
F. Alkhaier, Z. Su, and G. N. Flerchinger
Hydrol. Earth Syst. Sci., 16, 1833–1844, https://doi.org/10.5194/hess-16-1833-2012, https://doi.org/10.5194/hess-16-1833-2012, 2012
U. Mallast, R. Gloaguen, S. Geyer, T. Rödiger, and C. Siebert
Hydrol. Earth Syst. Sci., 15, 2665–2678, https://doi.org/10.5194/hess-15-2665-2011, https://doi.org/10.5194/hess-15-2665-2011, 2011
S. Siebert, J. Burke, J. M. Faures, K. Frenken, J. Hoogeveen, P. Döll, and F. T. Portmann
Hydrol. Earth Syst. Sci., 14, 1863–1880, https://doi.org/10.5194/hess-14-1863-2010, https://doi.org/10.5194/hess-14-1863-2010, 2010
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Short summary
This study tests the phase and amplitude of GRACE TWS signals in the Upper Nile Basin from five commonly used gridded products (NASA's GRCTellus: CSR, JPL, GFZ; JPL-Mascons; GRGS) using in situ data and soil moisture from the Global Land Data Assimilation System. Resolution of changes in groundwater storage (ΔGWS) from GRACE is greatly constrained by the uncertain simulated soil moisture storage and the low amplitude in ΔGWS observed in deeply weathered crystalline rocks in the Upper Nile Basin.
This study tests the phase and amplitude of GRACE TWS signals in the Upper Nile Basin from five...
