relation: https://pure.iiasa.ac.at/id/eprint/14561/ title: The Contribution of Non-CO2 Greenhouse Gas Mitigation to Achieving Long-Term Temperature Goals creator: Gambhir, A. creator: Napp, T. creator: Hawkes, A. creator: Höglund-Isaksson, L. creator: Winiwarter, W. creator: Purohit, P. creator: Wagner, F. creator: Bernie, D. creator: Lowe, J. description: This paper analyses the emissions and cost impacts of mitigation of non-CO2 greenhouse gases (GHGs) at a global level, in scenarios aimed at meeting a range of long-term temperature goals (LTTGs). The study combines an integrated assessment model (TIAM-Grantham) representing CO2 emissions (and their mitigation) from the fossil fuel combustion and industrial sectors, coupled with a model covering non-CO2 emissions (GAINS), using the latest global warming potentials from the Intergovernmental Panel on Climate Change’s Fifth Assessment Report. We illustrate that in general non-CO2 mitigation measures are less costly than CO2 mitigation measures, with the majority of their abatement potential achievable at US2005$100/tCO2e or less throughout the 21st century (compared to a marginal CO2 mitigation cost which is already greater than this by 2030 in the most stringent mitigation scenario). As a result, the total cumulative discounted cost over the period 2010–2100 (at a 5% discount rate) of limiting global average temperature change to 2.5 °C by 2100 is $48 trillion (about 1.6% of cumulative discounted GDP over the period 2010–2100) if only CO2 from the fossil fuel and industrial sectors is targeted, whereas the cost falls to $17 trillion (0.6% of GDP) by including non-CO2 GHG mitigation in the portfolio of options—a cost reduction of about 65%. The criticality of non-CO2 mitigation recommends further research, given its relatively less well-explored nature when compared to CO2 mitigation. date: 2017 type: Article type: PeerReviewed format: text language: en rights: cc_by identifier: https://pure.iiasa.ac.at/id/eprint/14561/1/energies-10-00602.pdf identifier: Gambhir, A., Napp, T., Hawkes, A., Höglund-Isaksson, L. ORCID: https://orcid.org/0000-0001-7514-3135 , Winiwarter, W. ORCID: https://orcid.org/0000-0001-7131-1496 , Purohit, P. ORCID: https://orcid.org/0000-0002-7265-6960 , Wagner, F. ORCID: https://orcid.org/0000-0003-3429-2374 , Bernie, D., et al. (2017). The Contribution of Non-CO2 Greenhouse Gas Mitigation to Achieving Long-Term Temperature Goals. Energies 10 (5) e602. 10.3390/en10050602 . relation: 10.3390/en10050602 identifier: 10.3390/en10050602 doi: 10.3390/en10050602