Publications related to the GRACE Missions (no abstracts)

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Assessing Mississippi embayment and coastal lowlands aquifer systems by groundwater stress index and regional groundwater model

Yang, Shuo, Tsai, Frank T. -C., and Clement, T. Prabhakar, 2025. Assessing Mississippi embayment and coastal lowlands aquifer systems by groundwater stress index and regional groundwater model. Journal of Hydrology, 658:133201, doi:10.1016/j.jhydrol.2025.133201.

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@ARTICLE{2025JHyd..65833201Y,
       author = {{Yang}, Shuo and {Tsai}, Frank T. -C. and {Clement}, T. Prabhakar},
        title = "{Assessing Mississippi embayment and coastal lowlands aquifer systems by groundwater stress index and regional groundwater model}",
      journal = {Journal of Hydrology},
     keywords = {Groundwater, Stress, Footprint, availability, Modeling, GRACE},
         year = 2025,
        month = sep,
       volume = {658},
          eid = {133201},
        pages = {133201},
     abstract = "{The Mississippi embayment aquifer system (MEAS) and the coastal lowlands
        aquifer system (CLAS) provide substantial freshwater for human
        activities in the U.S. Gulf Coastal Plain. However,
        anthropogenic impacts on groundwater in both aquifer systems
        remain poorly understood, hindering effective groundwater
        management. This study presents a significant advancement in the
        groundwater stress assessment for the MEAS and the CLAS in the
        Louisiana and southwestern Mississippi region, focusing on
        groundwater availability and sustainability in response to
        natural and human dynamics at various spatial and temporal
        scales. To achieve these, a novel groundwater stress index (GSI)
        was introduced to quantify the influence of groundwater use on
        groundwater availability. This metric was rigorously compared
        with the widely recognized groundwater footprint index (GFI).
        The assessment employed a regional groundwater model, which was
        contrasted with the assessment based on the Gravity Recovery and
        Climate Experiment (GRACE)-derived groundwater storage data. The
        modeling assessment reveals net groundwater storage gain in the
        study region from 2004 to 2021. Nevertheless, critical
        groundwater stress levels were identified in specific aquifers
        of the MEAS and CLAS, indicating localized groundwater depletion
        and unsustainable groundwater use. The model highlights the
        impacts of river-aquifer interactions on seasonal variations of
        groundwater availability and stress. The long-term trend of
        simulated groundwater storage aligns with GRACE-derived data.
        Moreover, the model-based assessment suggests similar
        groundwater stress to the GRACE-based assessment on a regional
        scale. The comparison between GSI and GFI suggests that the GSI
        is an effective approach to quantifying groundwater stresses
        across various scales.}",
          doi = {10.1016/j.jhydrol.2025.133201},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025JHyd..65833201Y},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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