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A physical metric-based framework for evaluating the climate trade-off between CO2 and contrails - the case of lowering aircraft flight trajectories

Deuber, Odette and Matthes, Sigrun and Sausen, Robert and Ponater , Michael and Lim, Ling (2012) A physical metric-based framework for evaluating the climate trade-off between CO2 and contrails - the case of lowering aircraft flight trajectories. Environmental Science and Policy.

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Abstract

Aviation climate impact is composed of short- and long-lived climate effects. When evaluating mitigation options, policy design requires to consider trade-offs apparent under different metric options. We present an evaluation framework to demonstrate the impact of individual physical metric choices on the preferred mitigation strategy, using the example of a generic trade-off situation in aviation. The concept of a turning point is established, which indicates the point in time where the mitigation of a short-term effect (e.g. line-shaped contrails) at the expense of a counteracting long-term effect (e.g. carbon dioxide) becomes preferable. In our generic situation, some physical metrics (e.g. average metrics, physical cost-benefit metrics) are better suited than others to trade off short- and long-lived climate effects for obtaining a robust policy recommendation. The preferred mitigation strategy depends particularly on the evaluation horizon, over which climate impacts are to be minimised (cost-benefit approach) and the selected aviation emission type (pulse, sustained, scenario). At any stage value, judgements must guide the required policy decision on metric options. Including contrail cirrus in the assessment, however, has the potential to dominate the policy recommendation in favour of contrail mitigation so that normative decisions become secondary.

Document Type:Article
Title:A physical metric-based framework for evaluating the climate trade-off between CO2 and contrails - the case of lowering aircraft flight trajectories
Authors:
AuthorsInstitution or Email of Authors
Deuber, OdetteUNSPECIFIED
Matthes, SigrunUNSPECIFIED
Sausen, RobertUNSPECIFIED
Ponater , MichaelUNSPECIFIED
Lim, LingManchester Metropolitan Univ., UK
Date:2012
Journal or Publication Title:Environmental Science and Policy
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Status:Accepted
Keywords:aviation, climate change, trade-off, metrics, linear contrails, simple climate model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Dr.rer.nat. Michael Ponater
Deposited On:16 Oct 2012 09:59
Last Modified:07 Feb 2013 20:08

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