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Climate Impact of Biofuels in Shipping: Global Model Studies of the Aerosol Indirect Effect

Righi, Mattia and Klinger, Carolin and Eyring, Veronika and Hendricks, Johannes and Lauer, Axel and Petzold, Andreas (2011) Climate Impact of Biofuels in Shipping: Global Model Studies of the Aerosol Indirect Effect. Environmental Science & Technology, 45, pp. 3519-3525. American Chemical society (ACS). doi: dx.doi.org/10.1021/es1036157.

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Official URL: http://pubs.acs.org/doi/pdfplus/10.1021/es1036157


Aerosol emissions from international shipping are recognized to have a large impact on the Earth’s radiation budget, directly by scattering and absorbing solar radiation and indirectly by altering cloud properties. New regulations have recently been approved by the International Maritime Organization (IMO) aiming at progressive reductions of the maximum sulfur content allowed in marine fuels from current 4.5% by mass down to 0.5% in 2020, with more restrictive limits already applied in some coastal regions. In this context, we use a global bottom-up algorithm to calculate geographically resolved emission inventories of gaseous (NOx, CO, SO2) and aerosol (black carbon, organic matter, sulfate) species for different kinds of low-sulfur fuels in shipping. Weapply these inventories to study the resulting changes in radiative forcing, attributed to particles from shipping, with the global aerosol-climate model EMAC-MADE. The emission factors for the different fuels are based on measurements at a test bed of a large diesel engine. We consider both fossil fuel (marine gas oil) and biofuels (palm and soy bean oil) as a substitute for heavy fuel oil in the current (2006) fleet and compare their climate impact to that resulting from heavy fuel oil use. Our simulations suggest that ship-induced surface level concentrations of sulfate aerosol are strongly reduced, up to about 40-60% in the high-traffic regions. This clearly has positive consequences for pollution reduction in the vicinity of major harbors. Additionally, such reductions in the aerosol loading lead to a decrease of a factor of 3-4 in the indirect global aerosol effect induced by emissions from international shipping.

Item URL in elib:https://elib.dlr.de/69606/
Document Type:Article
Title:Climate Impact of Biofuels in Shipping: Global Model Studies of the Aerosol Indirect Effect
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Righi, MattiaUNSPECIFIEDhttps://orcid.org/0000-0003-3827-5950UNSPECIFIED
Eyring, VeronikaUNSPECIFIEDhttps://orcid.org/0000-0002-6887-4885UNSPECIFIED
Lauer, AxelUni of Hawaii, Honolulu, HI, USAUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Environmental Science & Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 3519-3525
Publisher:American Chemical society (ACS)
Keywords:Aerosol, Radiative forcing, Shipping, Alternative fuels, Climate impact, Global modelling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Verkehrsentwicklung und Umwelt (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Freund, Jana
Deposited On:20 Apr 2011 15:54
Last Modified:29 Mar 2023 00:13

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