Global Gravity-based Groundwater Product (G3P)

The Global Gravity-based Groundwater Product (G3P) provides groundwater storage anomalies (GWSA) from a cross-cutting combination of GRACE/GRACE-FO-based terrestrial water storage (TWS) and storage compartments of the water cycle (WSCs) that are part of the Copernicus portfolio. The data set comprises gridded anomalies of groundwater, TWS, and the WSCs glacier, snow, soil moisture and surface water bodies plus layers containing uncertainty information for the individual data products. All WSCs are spatially filtered with a Gaussian filter to be compatible with TWS. Spatial coverage is global, except Greenland and Antarctica, with 0.5-degree resolution. Temporal coverage is from April 2002 to September 2023 with monthly temporal resolution. Gridded data sets are available as NetCDF files containing variables for the parameter value as anomaly in mm equivalent water height and the parameter’s uncertainty as mm equivalent water height.

The latest version of the data is visualized at the GravIS portal: https://gravis.gfz-potsdam.de/gws. From GravIS, the data is also available as area averages for several large river basins and aquifers, as well as for climatically similar regions.

G3P was funded by the EU Horizon 2020 programme in response to the call LC-SPACE-04-EO-2019-2020 “Copernicus evolution – Research activities in support of cross-cutting applications between Copernicus services” under grant agreement No. 870353.

Data and Resources

Cite this as

Claudia Ruz Vargas (2025). Global Gravity-based Groundwater Product (G3P) [Data set]. UNESCO IHP-WINS . https://doi.org/10.63253/oocdzi0h
Retrieved: 03:25 10 May 2025 (UTC)

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DOI https://doi.org/10.63253/oocdzi0h
Resource type Spatial data set
Date of creation 2025-05-06
Date of last revision 2025-05-06
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Metadata identifier Global-Gravity-based-Groundwater-Product-(G3P)
Metadata language English
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Spatial representation Type Vector
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Name of the dataset creator Claudia Ruz Vargas
Name of the dataset maintainer Claudia Ruz Vargas
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Email of the dataset creator claudia.ruz-vargas@un-igrac.org
Identifier of the dataset maintainer
Email of the dataset maintainer claudia.ruz-vargas@un-igrac.org
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