GRACE and GRACE-FO Related Publications (no abstracts)

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Dynamics of meteorological and hydrological drought: The impact of groundwater and El Niño events on forest fires in the Amazon

Toledo, Naomi, Moulatlet, Gabriel, Gaona, Gabriel, Valencia, Bryan, Hirata, Ricardo, and Conicelli, Bruno, 2024. Dynamics of meteorological and hydrological drought: The impact of groundwater and El Niño events on forest fires in the Amazon. Science of the Total Environment, 954:176612, doi:10.1016/j.scitotenv.2024.176612.

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@ARTICLE{2024ScTEn.95476612T,
       author = {{Toledo}, Naomi and {Moulatlet}, Gabriel and {Gaona}, Gabriel and {Valencia}, Bryan and {Hirata}, Ricardo and {Conicelli}, Bruno},
        title = "{Dynamics of meteorological and hydrological drought: The impact of groundwater and El Ni{\~n}o events on forest fires in the Amazon}",
      journal = {Science of the Total Environment},
     keywords = {Amazon, Drought Indicator (DI), Gravity Recovery and Climate Experiment (GRACE), Standardized precipitation index (SPI), El Ni{\~n}o-Southern Oscillation (ENSO), Wildfires},
         year = 2024,
        month = dec,
       volume = {954},
          eid = {176612},
        pages = {176612},
     abstract = "{Over recent decades, anthropogenic forest fires have significantly
        altered vegetation dynamics in the Amazon region. While human
        activities primarily initiate these fires, their escalation is
        intricately linked to climatic conditions, particularly droughts
        induced by the warm El Ni{\~n}o phase. This study investigates
        the impact of meteorological and hydrological drought on forest
        fires in the Amazon, focusing on the role of groundwater and El
        Ni{\~n}o events. Utilizing comprehensive drought indicators at
        various soil depths and standardized precipitation indexes, the
        research spans from 2004 to 2016, revealing a consistent
        decrease in humidity conditions across surface soil moisture,
        root zone soil moisture, and groundwater storage levels. With
        its slower response to precipitation changes, groundwater
        emerges as a crucial factor influencing hydrological drought
        patterns in the Amazon. The spatial distribution of drought
        conditions is explored, highlighting areas with lower humidity
        concentrations in the northeast and a correlation between forest
        fires and positive rates of change in burned area fraction
        during El Ni{\~n}o events. Notably, the study underscores the
        substantial increase in burned area during the
        2015{\textendash}2016, characterized by a very strong El
        Ni{\~n}o. This nuanced understanding of groundwater dynamics and
        its interplay with El Ni{\~n}o events provides critical insights
        for developing a tailored fire risk index in the ecologically
        significant and vulnerable Amazon basin, subsidizing strategies
        for mitigating fire risk and enhancing preparedness.}",
          doi = {10.1016/j.scitotenv.2024.176612},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2024ScTEn.95476612T},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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