caa a22 4500 467918686 CHVBK 20180406152910.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1007/s10584-005-9026-x doi (NATIONALLICENCE)springer-10.1007/s10584-005-9026-x Climate Strategy with Co2 Capture from the Air [Elektronische Daten] [David Keith, Minh Ha-Duong, Joshuah Stolaroff] It is physically possible to capture CO2 directly from the air and immobilize it in geological structures. Air capture differs from conventional mitigation in three key aspects. First, it removes emissions from any part of the economy with equal ease or difficulty, so its cost provides an absolute cap on the cost of mitigation. Second, it permits reduction in concentrations faster than the natural carbon cycle: the effects of irreversibility are thus partly alleviated. Third, because it is weakly coupled to existing energy infrastructure, air capture may offer stronger economies of scale and smaller adjustment costs than the more conventional mitigation technologies. We assess the ultimate physical limits on the amount of energy and land required for air capture and describe two systems that might achieve air capture at prices under 200 and 500 $/tC using current technology. Like geoengineering, air capture limits the cost of a worst-case climate scenario. In an optimal sequential decision framework with uncertainty, existence of air capture decreases the need for near-term precautionary abatement. The long-term effect is the opposite; assuming that marginal costs of mitigation decrease with time while marginal climate change damages increase, then air capture increases long-run abatement. Air capture produces an environmental Kuznets curve, in which concentrations are returned to preindustrial levels. Springer Science+Business Media, Inc., 2005 Keith David Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, T2N 1N4, Calgary, AB, Canada aut Ha-Duong Minh CNRS-CIRED, Campus du Jardin Tropical, 45 bis, av. de la Belle Gabrielle, 94736, Nogent sur Marne CEDEX, France aut Stolaroff Joshuah Department of Engineering and Public Policy, Carnegie Mellon University, 5000 Forbes Ave, 15213, Pittsburgh, PA, USA aut Climatic Change Springer Netherlands 74/1-3(2006-01-01), 17-45 0165-0009 74:1-3<17 2006 74 10584 https://doi.org/10.1007/s10584-005-9026-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10584-005-9026-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Keith David Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, T2N 1N4, Calgary, AB, Canada aut NATIONALLICENCE 700 1- Ha-Duong Minh CNRS-CIRED, Campus du Jardin Tropical, 45 bis, av. de la Belle Gabrielle, 94736, Nogent sur Marne CEDEX, France aut NATIONALLICENCE 700 1- Stolaroff Joshuah Department of Engineering and Public Policy, Carnegie Mellon University, 5000 Forbes Ave, 15213, Pittsburgh, PA, USA aut NATIONALLICENCE 773 0- Climatic Change Springer Netherlands 74/1-3(2006-01-01), 17-45 0165-0009 74:1-3<17 2006 74 10584 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer