Atmospheric implications of the geological storage of carbon dioxide – Niels Bohr Institute - University of Copenhagen

Niels Bohr Institute > Calendar > 2010 > Atmospheric implicatio...

Atmospheric implications of the geological storage of carbon dioxide

Talk by David M. Etheridge, CSIRO Marine and Atmospheric Research, Aspendale, Australia, Cooperative Research Centre for Greenhouse Gas Technologies and Centre for Ice and Climate, KU

The storage of carbon dioxide in geological formations is being developed as a significant technology to mitigate climate change. CO2 from several types of source would be captured and injected into suitable deep geological formations, rather than being emitted to the atmosphere as presently occurs. The implications for future long term CO2 emissions depend on several factors, including the source of the CO2, the potential leakage if any, and the extra energy required for the process. Leakage to the atmosphere must be kept very low for sustained climate benefit. Monitoring the reservoir and the nearby environment of storage sites to confirm such low leakage will be technically and scientifically challenging. Monitoring the atmosphere will depend on being able to discriminate potential CO2 leaked from storage from the large and variable CO2 background, which will require a suite of atmospheric measurement and modelling techniques.