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Targeted Use of Sustainable Aviation Fuel to Maximize Climate Benefits

Teoh, Roger and Schumann, Ulrich and Voigt, Christiane and Schripp, Tobias and Shapiro, Marc and Engberg, Zebediah and Molloy, Jarlath and Koudis, George S. and Stettler, Marc E. J. (2022) Targeted Use of Sustainable Aviation Fuel to Maximize Climate Benefits. Environmental Science & Technology. American Chemical society (ACS). doi: 10.1021/acs.est.2c05781. ISSN 0013-936X.

[img] PDF - Published version
[img] PDF - Published version

Official URL: https://doi.org/10.1021/acs.est.2c05781


Sustainable aviation fuel (SAF) can reduce aviation’s CO2 and non-CO2 impacts. We quantify the change in contrail properties and climate forcing in the North Atlantic resulting from different blending ratios of SAF and demonstrate that intelligently allocating the limited SAF supply could multiply its overall climate benefit by factors of 9-15. A fleetwide adoption of 100% SAF increases contrail occurrence (+5%), but lower nonvolatile particle emissions (-52%) reduce the annual mean contrail net radiative forcing (-44%), adding to climate gains from reduced life cycle CO2 emissions. However, in the short term, SAF supply will be constrained. SAF blended at a 1% ratio and uniformly distributed to all transatlantic flights would reduce both the annual contrail energy forcing (EFcontrail) and the total energy forcing (EFtotal, contrails + change in CO2 life cycle emissions) by ~0.6%. Instead, targeting the same quantity of SAF at a 50% blend ratio to ~2% of flights responsible for the most highly warming contrails reduces EFcontrail and EFtotal by ~10 and ~6%, respectively. Acknowledging forecasting uncertainties, SAF blended at lower ratios (10%) and distributed to more flights (~9%) still reduces EFcontrail (~5%) and EFtotal (~3%). Both strategies deploy SAF on flights with engine particle emissions exceeding 1012 m-1, at nighttime, and in winter.

Item URL in elib:https://elib.dlr.de/190391/
Document Type:Article
Title:Targeted Use of Sustainable Aviation Fuel to Maximize Climate Benefits
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Teoh, RogerCentre for Transport Studies, Imperial College, London, UKUNSPECIFIEDUNSPECIFIED
Schumann, UlrichDLR, IPAhttps://orcid.org/0000-0001-5255-6869UNSPECIFIED
Voigt, ChristianeDLR, IPAhttps://orcid.org/0000-0001-8925-7731UNSPECIFIED
Schripp, TobiasDLR, VThttps://orcid.org/0000-0002-1594-7331UNSPECIFIED
Shapiro, MarcOrca Sciences, Kirkland, WA 98033, USAUNSPECIFIEDUNSPECIFIED
Engberg, ZebediahOrca Sciences, Kirkland, WA 98033, USAUNSPECIFIEDUNSPECIFIED
Stettler, Marc E. J.Centre for Transport Studies, Imperial College, London, UKUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Environmental Science & Technology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:American Chemical society (ACS)
Keywords:aviation, contrail cirrus, climate forcing, sustainable aviation fuels, mitigation, CoCiP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Climate, Weather and Environment, L - Components and Emissions
Location: Oberpfaffenhofen , Stuttgart
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics
Institute of Atmospheric Physics
Institute of Combustion Technology > Chemical Kinetics and Analytics
Deposited By: Schumann, Prof.Dr.habil. Ulrich
Deposited On:23 Nov 2022 11:07
Last Modified:04 Jan 2024 10:35

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