GRACE and GRACE-FO Related Publications (no abstracts)

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Monthly and Seasonal Drought Characterization Using GRACE-Based Groundwater Drought Index and Its Link to Teleconnections across South Indian River Basins

Satish Kumar, Kuruva, AnandRaj, Pallakury, Sreelatha, Koppala, Bisht, Deepak Singh, and Sridhar, Venkataramana, 2021. Monthly and Seasonal Drought Characterization Using GRACE-Based Groundwater Drought Index and Its Link to Teleconnections across South Indian River Basins. Climate, 9(4):56, doi:10.3390/cli9040056.

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@ARTICLE{2021Clim....9...56S,
       author = {{Satish Kumar}, Kuruva and {AnandRaj}, Pallakury and {Sreelatha}, Koppala and {Bisht}, Deepak Singh and {Sridhar}, Venkataramana},
        title = "{Monthly and Seasonal Drought Characterization Using GRACE-Based Groundwater Drought Index and Its Link to Teleconnections across South Indian River Basins}",
      journal = {Climate},
     keywords = {GRACE, GGDI, drought, wavelet coherence, teleconnections},
         year = 2021,
        month = apr,
       volume = {9},
       number = {4},
          eid = {56},
        pages = {56},
     abstract = "{Traditional drought monitoring is based on observed data from both
        meteorological and hydrological stations. Due to the scarcity of
        station observation data, it is difficult to obtain accurate
        drought distribution characteristics, and also tedious to
        replicate the large-scale information of drought. Thus, Gravity
        Recovery and Climate Experiment (GRACE) data are utilized in
        monitoring and characterizing regional droughts where ground
        station data is limited. In this study, we analyzed and assessed
        the drought characteristics utilizing the GRACE Groundwater
        Drought Index (GGDI) over four major river basins in India
        during the period of 2003-2016. The spatial distribution,
        temporal evolution of drought, and trend characteristics were
        analyzed using GGDI. Then, the relationship between GGDI and
        climate factors were evaluated by the method of wavelet
        coherence. The results indicate the following points: GRACE's
        quantitative results were consistent and robust for drought
        assessment; out of the four basins, severe drought was noticed
        in the Cauvery river basin between 2012 and 2015, with severity
        of -27 and duration of 42 months; other than Godavari river
        basin, the remaining three basins displayed significant negative
        trends at monthly and seasonal scales; the wavelet coherence
        method revealed that climate factors had a substantial effect on
        GGDI, and the impact of Southern Oscillation Index (SOI) on
        drought was significantly high, followed by Sea Surface
        Temperature (SST) Index (namely, NINO3.4) and Multivariate El
        Ni{\~n}o-Southern Oscillation Index (MEI) in all the basins.
        This study provides reliable and robust quantitative result of
        GRACE water storage variations that shares new insights for
        further drought investigation.}",
          doi = {10.3390/cli9040056},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021Clim....9...56S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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