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

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

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Offizielle 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.

Titel:Climate Impact of Biofuels in Shipping: Global Model Studies of the Aerosol Indirect Effect
AutorenInstitution oder E-Mail-Adresse der Autoren
Righi, MattiaMattia.Righi@dlr.de
Klinger, CarolinDLR
Eyring, VeronikaVeronika.Eyring@dlr.de
Hendricks, JohannesJohannes.Hendricks@dlr.de
Lauer, AxelUni of Hawaii, Honolulu, HI, USA
Petzold, AndreasDLR
Erschienen in:Environmental Science & Technology
Referierte Publikation:Ja
In ISI Web of Science:Ja
DOI :dx.doi.org/10.1021/es1036157
Seitenbereich:Seiten 3519-3525
Stichwörter:Aerosol, Radiative forcing, Shipping, Alternative fuels, Climate impact, Global modelling
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Verkehrssystem
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V VS - Verkehrssystem
DLR - Teilgebiet (Projekt, Vorhaben):V - Verkehrsentwicklung und Umwelt (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Dynamik der Atmosphäre
Hinterlegt von: Jana Freund
Hinterlegt am:20 Apr 2011 15:54
Letzte Änderung:26 Mär 2013 13:28

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