Articles | Volume 11, issue 3
Earth Syst. Dynam., 11, 755–774, 2020
https://doi.org/10.5194/esd-11-755-2020
Earth Syst. Dynam., 11, 755–774, 2020
https://doi.org/10.5194/esd-11-755-2020

Research article 27 Aug 2020

Research article | 27 Aug 2020

Groundwater storage dynamics in the world's large aquifer systems from GRACE: uncertainty and role of extreme precipitation

Mohammad Shamsudduha and Richard G. Taylor

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (08 Apr 2020) by Richard Betts
AR by Mohammad Shamsudduha on behalf of the Authors (28 Apr 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (29 May 2020) by Richard Betts
RR by Soumendra Bhanja (07 Jun 2020)
RR by Marc Bierkens (13 Jun 2020)
ED: Publish as is (06 Jul 2020) by Richard Betts
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Short summary
Recent assessments of the sustainability of global groundwater resources using the Gravity Recovery and Climate Experiment (GRACE) satellites assume that the underlying trends are linear. Here, we assess recent changes in groundwater storage (ΔGWS) in the world’s large aquifer systems using an ensemble of GRACE datasets and show that trends are mostly non-linear. Non-linearity in ΔGWS derives, in part, from the episodic nature of groundwater replenishment associated with extreme precipitation.
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