The GeC project will perform high-class research and post-graduate education through two PhD and one Postdoc positions. They will be integrated in the expert groups working in the Longyearbyen CO2 lab project; operating in an industry-funded consortium wi th close links to the national SUCCESS and BigCCS centers and the Fault Facies project (CIPR, UiB). Planned activity will utilize the existing datasets of the Longyearbyen CO2 lab, which will be further developed through new data collection. Key themes, with a focus on CO2 behaviors in the subsurface will be - (1) sedimentary architecture and related flow of the utilized aquifer, (2) fractures as secondary conduits for flow in the aquifer and cap rock; (3) faults as baffles or conduits to CO2 flow, and ( 4) integrated reservoir modeling as means to test geological input variables and predictive capacity.