The influence of negative emission technologies and technology policies on the optimal climate mitigation portfolio

Lemoine DM, Fuss S, Szolgayova J, Obersteiner M, & Kammen DM (2012). The influence of negative emission technologies and technology policies on the optimal climate mitigation portfolio. Climatic Change 113 (2): 141-162. DOI:10.1007/s10584-011-0269-4.

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Abstract

Combining policies to remove carbon dioxide (CO2) from the atmosphere with policies to reduce emissions could decrease CO2 concentrations faster than possible via natural processes. We model the optimal selection of a dynamic portfolio of abatement, research and development (R&D), and negative emission policies under an exogenous CO2 constraint and with stochastic technological change. We find that near-term abatement is not sensitive to the availability of R&D policies, but the anticipated availability of negative emission strategies can reduce the near-term abatement optimally undertaken to meet 2 degrees C temperature limits. Further, planning to deploy negative emission technologies shifts optimal R&D funding from "carbon-free" technologies into "emission intensity" technologies. Making negative emission strategies available enables an 80% reduction in the cost of keeping year 2100 CO2 concentrations near their current level. However, negative emission strategies are less important if the possibility of tipping points rules out using late-century net negative emissions to temporarily overshoot the CO2 constraint earlier in the century.

Item Type: Article
Research Programs: Ecosystems Services and Management (ESM)
Bibliographic Reference: Climatic Change; 113(2):141-162 (July 2012) (Published online 15 October 2011)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:46
Last Modified: 18 Feb 2016 16:15
URI: http://pure.iiasa.ac.at/9939

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