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Integration of Non-CO2 Effects of Aviation in the EU ETS and under CORSIA

Niklaß, Malte and Dahlmann, Katrin and Grewe, Volker and Maertens, Sven and Plohr, Martin and Scheelhaase, Janina and Schwieger, Jonathan and Brodmann, Urs and Kurzböck, Claudia and Schweizer, Nadin and Repmann, Mischa and von Unger, Moritz (2019) Integration of Non-CO2 Effects of Aviation in the EU ETS and under CORSIA. Project Report. Umweltbundesamt. 242 S. (In Press)

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In addition to carbon dioxide, air traffic operation affects the climate through other emissions and atmospheric processes, such as the formation of ozone and contrail cirrus. The climate impact of these non-CO2 effects is strongly dependent on the emission location (in particular cruise altitude) and emission time (e.g. weather conditions) and, thus, highly non-linear to the fuel consumption. Although non-CO2 effects are responsible for about 2/3 of the climate impact of aviation, they are not yet taken into account in existing and currently planned emissions trading systems (e.g. EU ETS) or market-based measures (MBM, e.g. CORSIA 1). This research project focuses on the development of concepts for the integration of non-CO2 effects of air traffic into the EU ETS and under CORSIA. For this purpose, suitable climate metrics for assessing the relationship between non-CO2 and CO2 climate impacts are analyzed first (Part A). For selected non-CO2 calculation methodologies, the availability of the necessary data is examined and estimation procedures for non-existent data are investigated (Part B). Afterwards, the current practice in voluntary carbon markets for estimating CO2 and non-CO2 effects of aviation is presented (Part C). The additional administrative burden to verify reporting on aviation’s non-CO2 is examined in Part D. In the final step, key design parameters for the integration of non-CO2 consequences of aviation in the EU ETS and CORSIA are evaluated (Part E). The inclusion of non-CO2 effects in the EU ETS and CORSIA is highly recommended for climate-logical reasons and technically feasible, but involves an additional administrative burden for authorities and aircraft operators. The level of the resulting mitigation incentive as well as the additional effort is strongly depending on the calculation methodology of the CO2 equivalents. For this choice, a trade-off must be made between a simple operational feasibility and a high incentive level to modify flight routing and to reduce the NOx emission indices. False mitigation incentives, which can arise from to the non-linearity between non-CO2 climate effects and fuel consumption, must be prevented.

Item URL in elib:https://elib.dlr.de/133619/
Document Type:Monograph (Project Report)
Title:Integration of Non-CO2 Effects of Aviation in the EU ETS and under CORSIA
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Niklaß, MalteUNSPECIFIEDhttps://orcid.org/0000-0001-6760-8561UNSPECIFIED
Dahlmann, KatrinDLR, IPAhttps://orcid.org/0000-0003-3198-1713UNSPECIFIED
Grewe, VolkerDLR, IPAhttps://orcid.org/0000-0002-8012-6783UNSPECIFIED
Maertens, SvenUNSPECIFIEDhttps://orcid.org/0000-0002-4618-0946UNSPECIFIED
Plohr, MartinUNSPECIFIEDhttps://orcid.org/0000-0002-6165-0838UNSPECIFIED
Date:December 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:242
Series Name:Climate Change
Status:In Press
Keywords:Aviation; Non-CO2-Effects; EU-ETS; CORSIA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Air Traffic Concepts and Operation (old), L - Climate, Weather and Environment (old)
Location: Hamburg , Köln-Porz , Oberpfaffenhofen
Institutes and Institutions:Air Transport Operations
Institute of Propulsion Technology > Engine
Institute of Air Transport and Airport Research > Air Transport Research
Institute of Atmospheric Physics > Earth System Modelling
Deposited By: Niklaß, Malte
Deposited On:21 Jan 2020 09:42
Last Modified:21 Jan 2020 09:42

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