Zengerling, Zarah LeaZarah LeaZengerlingNiklaß, MalteMalteNiklaßGollnick, VolkerVolkerGollnick2026-04-272026-04-272025-0927th Euro Working Group on Transportation Annual Meeting, EWGT2025https://hdl.handle.net/11420/62811To comply with defined ambitious climate goals, technical and operational improvements are required to reduce the climate impact of aviation. Non-CO₂ emissions contribute to a majority of aviation’s total effect and a reduction of the associated climate impact is often associated with an increase in fuel consumption and CO₂ effects. These trade-offs typically result in higher operating costs, which create a lack of economic incentive to pursue such measures, ultimately slowing implementation. Therefore, this study investigates implications from a market-based policy scheme designed to support the implementation of climate mitigation strategies by internalizing non-CO₂ effects. An extension of the EU ETS to account for non-CO₂ effects in terms of CO<inf>2</inf> equivalents is modeled and resulting climate mitigation potentials and operating cost changes are analyzed. The results demonstrate the suitability of an extension of the existing accounting to non-CO₂ effects as this reduces cost in relation to the reference without measure implementation. Furthermore, benefits of operational climate mitigation measures are demonstrated in comparison to the use of sustainable fuels. Technical efficiency improvements can further help to increase mitigation potentials and reduce operating cost, while reduced accounting shares can help to limit cost and ticket price increase.en2352-14652025193200Elsevierhttps://creativecommons.org/licenses/by-nc-nd/4.0/accountingair transportclimate mitigationCO2 equivalentsEU ETSnon-CO2 effectsTechnology::629: Other Branches::629.1: Aviation::629.13: Aviation EngineeringSocial Sciences::333: Economics of Land and Energy::333.7: Natural Resources, Energy and EnvironmentTechnology::658: General ManagamentConference Paperhttps://doi.org/10.15480/882.1700710.1016/j.trpro.2026.02.02510.15480/882.17007