Publications related to the GRACE Missions (no abstracts)

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Global characteristics of drought propagation from surface water to groundwater

Liu, Lin, Zhou, Zhaoqiang, Li, Wenlu, Huang, Shengzhi, Tan, Xuezhi, Tang, Tao, Liu, Suning, and Shi, Haiyun, 2026. Global characteristics of drought propagation from surface water to groundwater. Journal of Hydrology, 665:134734, doi:10.1016/j.jhydrol.2025.134734.

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@ARTICLE{2026JHyd..66534734L,
       author = {{Liu}, Lin and {Zhou}, Zhaoqiang and {Li}, Wenlu and {Huang}, Shengzhi and {Tan}, Xuezhi and {Tang}, Tao and {Liu}, Suning and {Shi}, Haiyun},
        title = "{Global characteristics of drought propagation from surface water to groundwater}",
      journal = {Journal of Hydrology},
         year = 2026,
        month = feb,
       volume = {665},
          eid = {134734},
        pages = {134734},
     abstract = "{Traditional groundwater drought monitoring requires local observation
        data, which is not suitable for large-scale studies. Gravity
        Recovery and Climate Experiment Satellite (GRACE) provided a new
        perspective for global-scale groundwater drought estimation.
        However, the propagation relationships between groundwater
        drought and other types of droughts on a global scale have not
        been fully explored yet. In this study, based on GRACE mass
        concentration solution, GGDI (GRACE Groundwater Drought Index)
        was utilized to assess groundwater drought, while SPEI
        (Standardized Precipitation Evapotranspiration Index) and SRI
        (Standardized Runoff Index) were used to characterize
        meteorological drought and hydrologic drought, respectively. The
        Pearson correlation coefficient and the Mann-Kendall trend
        analysis were adopted to quantify the drought propagation time
        (DPT) and trends of three indices. Run theory was employed to
        capture drought events. Results indicated that: (1) GGDI showed
        significant variation trends in 71.9 \% of the regions. SPEI
        shows no significant trend in 76.0 \% of the regions, and SRI
        shows no significant trend in 67.1 \% of the regions. (2) The
        average drought propagation time from meteorological drought to
        groundwater drought was 25.43 months, and the average drought
        propagation time from hydrologic drought to groundwater drought
        was 22.80 months. (3) Groundwater drought has the highest
        severity and duration. meteorological drought occurs with the
        highest frequency. Overall, this study provides groundwater
        drought assessments from a global perspective and contributes to
        understanding drought development and migration mechanisms in
        water cycle. The findings are of practical significance for
        global groundwater resources management.}",
          doi = {10.1016/j.jhydrol.2025.134734},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026JHyd..66534734L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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