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  The Global Gravity-based Groundwater Product (G3P): first results

Sharifi, E., Güntner, A., Haas, J., Dorigo, W., Jäggi, A., Ruz Vargas, C., Behzadpour, S., Boergens, E., Briese, C., Lopez, S. C., Crétaux, J. F., Darbeheshti, N., Dobslaw, H., Dussaillant, I., Flechtner, F., Hunink, J., Kidd, R., Kosmale, M., Kukuric, N., Kvas, A., Luojus, K., Mayer-Gürr, T., Meyer, U., Pasik, A., Paul, F., Pedinotti, V., Vayre, M., Zawadzki, L., Zemp, M. (2022): The Global Gravity-based Groundwater Product (G3P): first results - Abstracts, EGU General Assembly 2022 (Vienna, Austria, Online 2022).
https://doi.org/10.5194/egusphere-egu22-1659

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Sharifi, Ehsan1, Autor              
Güntner, A.1, Autor              
Haas, Julian1, Autor              
Dorigo, Wouter2, Autor
Jäggi, Adrian2, Autor
Ruz Vargas, Claudia2, Autor
Behzadpour, Saniya2, Autor
Boergens, Eva3, Autor              
Briese, Christian2, Autor
Lopez, Sergio Contreras2, Autor
Crétaux, Jean Francois2, Autor
Darbeheshti, Neda2, Autor
Dobslaw, H.3, Autor              
Dussaillant, Inés2, Autor
Flechtner, Frank4, Autor              
Hunink, Johannes2, Autor
Kidd, Richard2, Autor
Kosmale, Miriam2, Autor
Kukuric, Neno2, Autor
Kvas, Andreas2, Autor
Luojus, Kari2, AutorMayer-Gürr, Torsten2, AutorMeyer, Ulrich2, AutorPasik, Adam2, AutorPaul, Frank2, AutorPedinotti, Vanessa2, AutorVayre, Maxime2, AutorZawadzki, Lionel2, AutorZemp, Michael2, Autor mehr..
Affiliations:
14.4 Hydrology, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146048              
2External Organizations, ou_persistent22              
31.3 Earth System Modelling, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146027              
41.2 Global Geomonitoring and Gravity Field, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146026              

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 Zusammenfassung: The Global Gravity-based Groundwater Product (G3P) aims at developing a satellite-based groundwater storage (GW) data set as a new product for the EU Copernicus Climate Change Service. As the world’s largest distributed freshwater storage, GW is a key resource for mankind, industrial, and agricultural demands. In Copernicus, there is no service available yet to deliver data on this fundamental resource, nor is there any other data source worldwide that operationally provides information on changing groundwater resources in a consistent way, observation-based, and with global coverage. Therefore, G3P develops an operational global groundwater service as a cross-cutting extension of the existing Copernicus portfolio. G3P capitalizes from the unique capability of GRACE and GRACE-FO satellite gravimetry as the only remote sensing technology to monitor subsurface mass variations, and from other satellite-based water storage products to provide a data set of groundwater storage change for large areas with global coverage. G3P is obtained by using a mass balance approach, i.e., by subtracting satellite-based water storage compartments (WSCs) such as snow water equivalent, root-zone soil moisture, glacier mass, and surface water storage from GRACE/GRACE-FO monthly terrestrial water storage anomalies (TWSA). For a consistent subtraction of all individual WSCs from GRACE-TWSA, the individual WSCs are filtered in a similar way as GRACE-TWSA, where optimal filter types were derived by analyses of spatial correlation patterns. G3P groundwater variations are provided for almost two decades (from 2002 to the present), with the monthly resolution, and at a 0.5-degree spatial resolution globally. In this contribution, we also illustrate preliminary results of the G3P data set and of its uncertainties, as well as its evaluation by independent groundwater data. This study has received funding from the European Union’s Horizon 2020 research and innovation programme for G3P (Global Gravity-based Groundwater Product) under grant agreement nº 870353.

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Sprache(n): eng - Englisch
 Datum: 202220222022202220222022
 Publikationsstatus: Final veröffentlicht
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.5194/egusphere-egu22-1659
GFZPOF: p4 T5 Future Landscapes
 Art des Abschluß: -

Veranstaltung

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Titel: EGU General Assembly 2022
Veranstaltungsort: Vienna, Austria, Online
Start-/Enddatum: 2022-05-23 - 2022-05-27

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Titel: Abstracts
Genre der Quelle: Konferenzband
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