Vichi, M.; Navarra, A.; Fogli, P. G. (2013): Adjustment of the natural ocean carbon cycle to negative emission rates. In: Climatic Change. DOI 10.1007/s10584-012-0677-0

On CDR and negative emissions. "Results show that both actions are anticipated to release the anthropogenic carbon stored in the surface ocean, effectively increasing the required removal effort."

Link

McGlashan, Niall; Shah, Nilay; Caldecott, Ben; Workman, Mark (2012): High-level techno-economic assessment of negative emissions technologies. In: Process Safety and Environmental Protection 90 (6), pp. 501–510.

"This paper presents results from research conducted to provide a high level techno-economic and performance assessments of various emerging technologies for capturing CO₂ from the air, directly and indirectly, on a life-cycle basis. The technologies assessed include ‘artificial trees’, the soda lime process, augmented ocean disposal, biochar and bio-energy with carbon capture and storage."

Link

Lackner, K. S.; Brennan, S.; Matter, J. M.; Park, A.-H A.; Wright, A.; van der Zwaan, B. (2012): The urgency of the development of CO2 capture from ambient air. In: Proceedings of the National Academy of Sciences 109 (33), S. 13156–13162. DOI 10.1073/pnas.1108765109

Paper discussing direct air capture, CCS and negative emissions.

Link

"This paper draws on a recent global assessment of carbon dioxide removal (or negative emissions) technologies (NETs) undertaken by the author for Friends of the Earth in the UK. Alongside criteria such as cost and technical readiness,  the review applied criteria regarding controllability, accountability and side effects (including distributional impacts) to around 30 prospective NETs found in the literature."

Link (direct download)