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Modeling the regional impact of ship emissions on NOx and ozone levels over the Eastern Atlantic and Western Europe using ship plume parameterization

Huszar, P. and Cariolle, D. and Paoli, R. and Halenka, T. and Belda, M. and Schlager, H. and Miksovsky, J. and Pisoft, P. (2010) Modeling the regional impact of ship emissions on NOx and ozone levels over the Eastern Atlantic and Western Europe using ship plume parameterization. Atmospheric Chemistry and Physics, 10, pp. 6645-6660. DOI: 10.5194/acp-10-6645-2010.

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Official URL: http://www.atmos-chem-phys.net/10/6645/2010/acp-10-6645-2010.pdf

Abstract

In general, regional and global chemistry transport models apply instantaneous mixing of emissions into the model’s finest resolved scale. In case of a concentrated source, this could result in erroneous calculation of the evolution of both primary and secondary chemical species. Several studies discussed this issue in connection with emissions from ships and aircraft. In this study, we present an approach to deal with the non-linear effects during dispersion of NOx emissions from ships. It represents an adaptation of the original approach developed for aircraft NOx emissions, which uses an exhaust tracer to trace the amount of the emitted species in the plume and applies an effective reaction rate for the ozone production/destruction during the plume’s dilution into the background air. In accordance with previous studies examining the impact of international shipping on the composition of the troposphere, we found that the contribution of ship induced surface NOx to the total reaches 90% over remote ocean and makes 10–30% near coastal regions. Due to ship emissions, surface ozone increases by up to 4– 6 ppbv making 10% contribution to the surface ozone budget. When applying the ship plume parameterization, we show that the large scale NOx decreases and the ship NOx contribution is reduced by up to 20–25%. A similar decrease was found in the case of O3. The plume parameterization suppressed the ship induced ozone production by 15–30% over large areas of the studied region. To evaluate the presented parameterization, nitrogen monoxide measurements over the English Channel were compared with modeled values and it was found that after activating the parameterization the model accuracy increases.

Document Type:Article
Title:Modeling the regional impact of ship emissions on NOx and ozone levels over the Eastern Atlantic and Western Europe using ship plume parameterization
Authors:
AuthorsInstitution or Email of Authors
Huszar, P.Charles Univ., Prague, CS
Cariolle, D. CERFACS/CNRS, Toulouse, F
Paoli, R. Météo-France, Toulouse, F
Halenka, T. Charles Univ., Prague, CS
Belda, M. Charles Univ., Prague, CS
Schlager, H. DLR
Miksovsky, J. Charles Univ., Prague, CS
Pisoft, P. Charles Univ., Prague, CS
Date:2010
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
DOI:10.5194/acp-10-6645-2010
Page Range:pp. 6645-6660
Status:Published
Keywords:ship emissions, nitrogen oxides, ship plumes
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 - VEU (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Yasemin Yilmaz
Deposited On:10 Dec 2010 10:15
Last Modified:26 Mar 2013 13:24

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