Publications related to the GRACE Missions (no abstracts)

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Investigating terrestrial water storage change in a western Canadian river basin with GRACE/GRACE–FO and fully–integrated groundwater – surface water modelling

Bringeland, Stephanie, Frey, Steven K., Fotopoulos, Georgia, Crowley, John, Xu, Shu, Khader, Omar, Eum, Hyung, Farjad, Babak, Erler, Andre R., and Gupta, Anil, 2026. Investigating terrestrial water storage change in a western Canadian river basin with GRACE/GRACE–FO and fully–integrated groundwater – surface water modelling. Hydrology and Earth System Sciences, 30(18):6057–6073, doi:10.5194/hess-30-6057-2026.

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@ARTICLE{2026HESS...30.6057B,
       author = {{Bringeland}, Stephanie and {Frey}, Steven K. and {Fotopoulos}, Georgia and {Crowley}, John and {Xu}, Shu and {Khader}, Omar and {Eum}, Hyung and {Farjad}, Babak and {Erler}, Andre R. and {Gupta}, Anil},
        title = "{Investigating terrestrial water storage change in a western Canadian river basin with GRACE/GRACE-FO and fully-integrated groundwater - surface water modelling}",
      journal = {Hydrology and Earth System Sciences},
         year = 2026,
        month = sep,
       volume = {30},
       number = {18},
        pages = {6057-6073},
     abstract = "{As hydrological trends shift in response to a warming climate, accurate
        characterization of hydrologic conditions and hydrologic change
        are imperative for water resources management, which is
        particularly important in the Canadian Prairies. In the study
        herein, a HydroGeoSphere (HGS) fully integrated groundwater --
        surface water (GW-SW) model is employed to evaluate trends and
        drivers of surface and subsurface water storage changes in the
        South Saskatchewan River Basin (SSRB). Terrestrial water storage
        anomalies (TWSA) derived from the Gravity Recovery and Climate
        Experiment (GRACE/GRACE-FO) are compared to HGS results; strong
        correlation is identified. The HGS model allows for the analysis
        of the constituent water storage components of TWSA, namely
        surface water, soil moisture, and groundwater, and the
        GRACE/GRACE-FO solutions are used to validate the regional-scale
        TWSA and the interannual trends present in the SSRB TWSA time
        series. Meteorological and oceanic drivers and their impact on
        interannual hydrological trends in the SSRB are examined. Time-
        frequency analysis reveals a harmonic trend present in the SSRB
        TWSA with a period of 2.7--3.0 years, the inverse of which is
        present in the Oceanic Ni{\~n}o Index. The largest intra-annual
        water storage fluctuation is found in the soil profile, followed
        by snowpack, while groundwater experiences longer, multi-year
        cyclicity. Warm oceanic conditions align with dry conditions and
        less snowpack in the SSRB, which leads to negative TWSA
        anomalies. Incorporating both high-resolution GW-SW models and
        regional-scale satellite gravimetry-derived estimates of TWSA
        facilitates a comprehensive analysis of hydrological dynamics in
        the Canadian Prairies and improved characterization of surface
        water and groundwater storage changes.}",
          doi = {10.5194/hess-30-6057-2026},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026HESS...30.6057B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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