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Response to: Long-term effectiveness and consequences of carbon dioxide sequestration? by Gary Shaffer, published in Nature Geosciences, 27 June 2010
Dooley, J.J. (2010). Response to: Long-term effectiveness and consequences of carbon dioxide sequestration? by Gary Shaffer, published in Nature Geosciences, 27 June 2010. U.S. Department of Energy: Oak Ridge. 5 pp. https://hdl.handle.net/10.2172/989032
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| Author keywords |
carbon dioxide capture and storage; deep geologic formations; retention; climate change |
| Abstract |
Shaffer’s (2010) article reports on the long term impact of less than perfect retention of anthropogenic CO2 stored in deep geologic reservoirs and in the ocean. The central thesis of this article is predicated on two deeply flawed assumptions. The first and most glaring is the implicit assumption that society has only one means of reducing greenhouse gas emissions, carbon dioxide capture and storage (CCS). Secondly, there is absolutely no geophysical nor geomechanical basis for assuming an exponential decay of CO2 stored in deep geologic formations as done by Schaffer. Shaffer’s analysis of the impact of leakage from anthropogenic CO2 stored in deep geologic reservoirs are based upon two fundamentally flawed assumptions and therefore the reported results as well as the public policy conclusions presented in the paper need to be read with this understanding in mind as far less CO2 stored below ground because society drew upon a broad portfolio of advanced energy technologies over the coming century coupled with a more technically accurate conceptualization of CO2 storage in the deep subsurface and the important role of secondary and tertiary trapping mechanisms would have yield a far less pessimistic view of the potential role that CCS can play in a broader portfolio of societal responses to the very serious threat posed by climate change. |
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