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Volume 21, issue 9
Hydrol. Earth Syst. Sci., 21, 4533-4549, 2017
https://doi.org/10.5194/hess-21-4533-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Hydrol. Earth Syst. Sci., 21, 4533-4549, 2017
https://doi.org/10.5194/hess-21-4533-2017
© Author(s) 2017. This work is distributed under
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 et al.
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A, G., Wahr, J., and Zhong, S.: Computations of the viscoelastic response of a 3-D compressible Earth to surface loading: an application to Glacial Isostatic Adjustment in Antarctica and Canada, Geophys. J. Int., 192, 557–572, https://doi.org/10.1093/gji/ggs030, 2013.
Arendt, A. A., Luthcke, S. B., Gardner, A. S., O'Neel, S., Hill, D., Moholdt, G., and Abdalati, W.: Analysis of a GRACE global mascon solution for Gulf of Alaska glaciers, J. Glaciol., 59, 913–924, 2013.
Awange, J. L., Sharifi, M. A., Ogonda, G., Wickert, J., Grafarend, E., and Omulo, M.: The falling Lake Victoria water levels: GRACE, TRIMM and CHAMP satellite analysis of the lake basin, Water Resour. Manag., 22, 775–796, 2008.
Awange, J. L., Anyah, R., Agola, N., Forootan, E., and Omondi, P.: Potential impacts of climate and environmental change on the stored water of Lake Victoria Basin and economic implications, Water Resour. Res., 49, 8160–8173, 2013.
Awange, J. L., Forootan, E., Kuhn, M., Kusche, J., and Heck, B.: Water storage changes and climate variability within the Nile Basin between 2002 and 2011, Adv. Water Resour., 73, 1–15, 2014.
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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...
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