FH-DGGV 2026
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Meet IAH-D at 30th Meeting of the German Association for Hydrogeology 202610-13 MARCH 2026 | Kongresshalle am Zoo, Leipzig | GERMANY |
The International Association of Hydrogeologists – German Chapter (IAH-D) is hosting the session on “Groundwater and CO2”
Jannes Kordilla1, Judith Flügge2, Johannes Barth3
1 Institute for Environmental Assessment and Water Research, jannes.kordilla@idaea.csic.es
2 Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH, judith.fluegge@grs.de
3 Chair of Applied Geology, GeoZentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg, johannes.barth@fau.de
In terrestrial systems CO2 occurs almost everywhere and with many aspects also in groundwater. This fact offers a suitable topic for international considerations of groundwater. On the one hand, production of CO2 in groundwater systems is usually enhanced due to absence of both light and photosynthesis. Under further reducing conditions CO2 may even serve as a substrate for methane production. Therefore, aquatic carbon cycles in groundwater often center around CO2. This gas also offers links to the unsaturated zone and to surface water systems that — due to groundwater connectivity — usually emit large amounts of CO2. It further offers valuable aspects to pollutant turnover in groundwater. In such scenarios quantifications of carbon amounts as well as source- and sink-characterizations are important tools to mark progress of reactions. Other important examples of CO2 involve weathering reactions in and around groundwater systems. On the other hand, the topic of groundwater and CO2 is also of interest to climate mitigation strategies such as carbon capture and storage (CCS). Moreover, CO2 is also of continuous interest in deep groundwaters with connections to plutonic processes and related questions of carbon sources and sinks. We invite transdisciplinary contributions with aspects of groundwater-surface water interaction, biogeochemical turnover, characterization of groundwater reactive pathways, monitored natural attenuation and CCS. Contributions can be submitted in German or English and the session will be offered bilingually.
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