Publications related to the GRACE Missions (no abstracts)

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Revisiting Sub-Surface Drought Cascades With Daily Satellite Observations of Soil Moisture and Terrestrial Water Storage

Blank, Daniel, Eicker, Annette, Reager, John T., and Güntner, Andreas, 2025. Revisiting Sub-Surface Drought Cascades With Daily Satellite Observations of Soil Moisture and Terrestrial Water Storage. Water Resources Research, 61(8):e2024WR039321, doi:10.1029/2024WR039321.

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@ARTICLE{2025WRR....6139321B,
       author = {{Blank}, Daniel and {Eicker}, Annette and {Reager}, John T. and {G{\"u}ntner}, Andreas},
        title = "{Revisiting Sub-Surface Drought Cascades With Daily Satellite Observations of Soil Moisture and Terrestrial Water Storage}",
      journal = {Water Resources Research},
     keywords = {drought cascades, soil moisture, GRACE, remote sensing, water storage},
         year = 2025,
        month = aug,
       volume = {61},
       number = {8},
          eid = {e2024WR039321},
        pages = {e2024WR039321},
     abstract = "{The increasing frequency, intensity, and duration of extreme heat and
        drought events in a warming climate make it crucial to
        understand the relationship between surface and subsurface water
        storage dynamics during these events. Changes in water storage
        can be studied globally using satellite observations. Microwave
        remote sensing observes the upper few centimeters of the soil,
        while satellite gravimetry detects changes in the entire column
        of terrestrial water storage. We use daily data of the Gravity
        Recovery and Climate Experiment (GRACE) and GRACE Follow-On
        (GRACE-FO), satellite-based surface soil moisture data and root
        zone products from Soil Moisture Ocean Salinity, Soil Moisture
        Active Passive, and European Space Agency Climate Change
        Initiative on a harmonized 1${}^{\circ}$ global grid to study
        the evolution of water storage deficits across different soil
        layers. The joint analysis of the three types of data provides
        valuable insight into the hydrological dynamics in different
        soil depths and subsurface water storage compartments. To
        identify different dynamics, we compute the rate of change from
        de-seasonalized water storage anomaly time series to assess how
        quickly the system accumulates storage deficits during drought
        conditions and recovers from them for different integration
        depths in the subsurface. The results indicate characteristic
        patterns of the temporal dynamics of drought recovery with fast
        fluctuations and short recovery times for surface soil moisture,
        a prolonged behavior in the root-zone, and an even slower
        response in the entire water column. This highlights that the
        cascading propagation of drought dynamics from the surface to
        the subsurface can be quantified by remote sensing data with
        daily resolution at the global scale.}",
          doi = {10.1029/2024WR039321},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025WRR....6139321B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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