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Gros, Jonas; Schmidt, Mark; Linke, Peter; Dötsch, Saskia; Triest, Jack; Martínez-Cabanas, María; Esposito, Mario; Dale, Andrew W.; Sommer, Stefan; Flohr, Anita; Fone, Joseph; Bull, Jonathan M.; Roche, Ben; Strong, James A.; Saw, Kevin; Brown, Robin; Koopmans, Dirk; Wallmann, Klaus
International journal of greenhouse gas control, July 2021, 2021-07-00, Letnik: 109Journal Article
According to many prognostic scenarios by the Intergovernmental Panel on Climate Change (IPCC), a scaling-up of carbon dioxide (CO2) capture and storage (CCS) by several orders-of-magnitude is necessary to meet the target of ≤2 °C global warming by 2100 relative to preindustrial levels. Since a large fraction of the predicted CO2 storage capacity lies offshore, there is a pressing need to develop field-tested methods to detect and quantify potential leaks in the marine environment. Here, we combine field measurements with numerical models to determine the flow rate of a controlled release of CO2 in a shallow marine setting at about 119 m water depth in the North Sea. In this experiment, CO2 was injected into the sediment at 3 m depth at 143 kg d-1. The new leakage monitoring tool predicts that 91 kg d-1 of CO2 escaped across the seafloor, and that 51 kg d-1 of CO2 were retained in the sediment, in agreement with independent field estimates. The new approach relies mostly on field data collected from ship-deployed technology (towed sensors, Acoustic Doppler current profiler—ADCP), which makes it a promising tool to monitor existing and upcoming offshore CO2 storage sites and to detect and quantify potential CO2 leakage. •Combination of towed sensors and numerical simulations quantified the CO2 leakage.•64% of CO2 injected at 3-m depth in the sediment leaked into bottom water.•Gas-phase measurements of chemical tracers validated the bubble dissolution model.
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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