Publications related to the GRACE Missions (no abstracts)

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High-Resolution Terrestrial Water Storage Anomalies and Components in China From GRACE/GFO via Joint Inversion Downscaling

Xiong, Yuhao, Feng, Wei, Bai, Hongbing, Chen, Wei, Jiang, Zhongshan, and Zhong, Min, 2025. High-Resolution Terrestrial Water Storage Anomalies and Components in China From GRACE/GFO via Joint Inversion Downscaling. Water Resources Research, 61(7):e2024WR038996, doi:10.1029/2024WR038996.

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@ARTICLE{2025WRR....6138996X,
       author = {{Xiong}, Yuhao and {Feng}, Wei and {Bai}, Hongbing and {Chen}, Wei and {Jiang}, Zhongshan and {Zhong}, Min},
        title = "{High-Resolution Terrestrial Water Storage Anomalies and Components in China From GRACE/GFO via Joint Inversion Downscaling}",
      journal = {Water Resources Research},
     keywords = {GRACE/GFO, TWSA, high-resolution, joint inversion downscaling},
         year = 2025,
        month = jul,
       volume = {61},
       number = {7},
          eid = {e2024WR038996},
        pages = {e2024WR038996},
     abstract = "{Satellite gravimetry (Gravity Recovery and Climate Experiment
        (GRACE)/GRACE Follow-On (GFO)) has solved the challenge of
        monitoring global and basin-scale terrestrial water storage
        anomalies (TWSA) at monthly intervals and spatial scales of
        {\ensuremath{\sim}}330 km. However, this spatial resolution
        limits its ability to capture small-scale basin water
        variations, and GRACE/GFO cannot independently distinguish
        different vertical water components, which further restricts its
        application in hydrological studies. To address these
        challenges, we propose a joint inversion downscaling method that
        combines hydrological simulations and GRACE/GFO observations.
        Our approach effectively inherits the high spatial resolution
        patterns from hydrological models and preserves the large-scale
        accuracy from the GRACE/GFO measurements. It also allows for the
        flexible inclusion of mascon groups, reducing dependence on
        hydrological models and improving the performance in glacier
        regions, where traditional downscaling methods struggle. We
        reconstructed high-resolution (i.e., 0.5{\textdegree}) TWSA and
        its components in China, for example, groundwater and glacier,
        revealing their finer spatial trends and localized water mass
        changes. From 2002 to 2022, our study details TWSA and flux
        changes in different China's basins, demonstrating marked
        regional disparities. Groundwater depletion rate in the North
        China Plain is 2.43 {\ensuremath{\pm}} 0.18 cm/yr, equivalent to
        3.35 {\ensuremath{\pm}} 0.25 Gt/yr, and glacier mass loss rate
        in the High Mountain Asia (HMA) is 34.10 {\ensuremath{\pm}} 1.55
        Gt/yr. We also map the spatiotemporal patterns of glaciers in
        HMA and surface water changes in the endorheic Tibetan Plateau.
        This work has successfully extracted high-resolution signals for
        different vertical water components in China, providing valuable
        insights for regional water resource management and disaster
        mitigation.}",
          doi = {10.1029/2024WR038996},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025WRR....6138996X},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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