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The effect of harmonized emissions on aerosol properties in global models – an AeroCom experiment

Textor, C. and Schulz, M. and Guibert, S. and Kinne, S. and Balkanski, Y. and Bauer, S. and Berntsen, T. and Berglen, T. and Boucher, O. and Chin, M. and Dentener, F. and Diehl, T. and Feichter, J. and Fillmore, D. and Ginoux, P. and Gong, S. and Grini, A. and Hendricks, J. and Horowitz, L. and Huang, P. and Isaksen, I. S. A. and Iversen, T. and Kloster, S. and Koch, D. and Kirkevag, A. and Kristjansson, J. E. and Krol, M. and Lauer, A. and Lamarque, J. F. and Liu, X. and Montanaro, V. and Myhre, G. and Penner, J. E. and Pitari, G. and Reddy, M. S. and Seland, Ø. and Stier, P. and Takemura, T. and Tie, X. (2007) The effect of harmonized emissions on aerosol properties in global models – an AeroCom experiment. Atmospheric Chemistry and Physics, 7, pp. 4489-4501.

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Official URL: http://www.atmos-chem-phys.net/7/4489/2007/

Abstract

The effects of unified aerosol sources on global aerosol fields simulated by different models are examined in this paper. We compare results from two AeroCom experiments, one with different (ExpA) and one with unified emissions, injection heights, and particle sizes at the source (ExpB). Surprisingly, harmonization of aerosol sources has only a small impact on the simulated inter-model diversity of the global aerosol burden, and consequently global optical properties, as the results are largely controlled by model-specific transport, removal, chemistry (leading to the formation of secondary aerosols) and parameterizations of aerosol microphysics (e.g., the split between deposition pathways) and to a lesser extent by the spatial and temporal distributions of the (precursor) emissions. The burdens of black carbon and especially sea salt become more coherent in ExpB only, because the large ExpA diversities for these two species were caused by a few outliers. The experiment also showed that despite prescribing emission fluxes and size distributions, ambiguities in the implementation in individual models can lead to substantial differences. These results indicate the need for a better understanding of aerosol life cycles at process level (including spatial dispersal and interaction with meteorological parameters) in order to obtain more reliable results from global aerosol simulations. This is particularly important as such model results are used to assess the consequences of specific air pollution abatement strategies.

Document Type:Article
Title:The effect of harmonized emissions on aerosol properties in global models – an AeroCom experiment
Authors:
AuthorsInstitution or Email of Authors
Textor, C.LSCE, Gif-sur-Yvette, F
Schulz, M.LSCE, Gif-sur-Yvette, F
Guibert, S.LSCE, Gif-sur-Yvette, F
Kinne, S.MPI, Hamburg
Balkanski, Y.LSCE, Gif-sur-Yvette, F
Bauer, S.Columbia Univ., New York, USA
Berntsen, T.Univ. of Oslo, Oslo, N
Berglen, T.Univ. of Oslo, Oslo, N
Boucher, O.CNRS, Villeneuve d'Ascq, F
Chin, M.NASA, Greenbelt, MD, USA
Dentener, F.European Commision, Joint Research Centre, I
Diehl, T.Univ. of Maryland Baltimore County, Baltimore, MD, USA
Feichter, J.MPI, Hamburg
Fillmore, D.NCAR, Boulder, CO, USA
Ginoux, P.NOAA, Princeton, NJ, USA
Gong, S.ARQM Meteorological Service Canda, Toronto, CND
Grini, A.Univ. of Oslo, Oslo, N
Hendricks, J.UNSPECIFIED
Horowitz, L.NOAA, NJ, USA
Huang, P.ARQM Meteorological Service Canda, Toronto, CND
Isaksen, I. S. A.Univ. of Oslo, Oslo, N
Iversen, T.Univ. of Oslo, Oslo, N
Kloster, S.MPI, Hamburg
Koch, D.Columbia Univ., New York, USA
Kirkevag, A.Univ. of Oslo, Oslo, N
Kristjansson, J. E.Univ. of Oslo, Oslo, N
Krol, M.European Commision, Joint Research Centre, I
Lauer, A.UNSPECIFIED
Lamarque, J. F.NCAR, Boulder, CO, USA
Liu, X.PNNL, Richland, USA
Montanaro, V.Univ. degli Studi L’Aquila, I
Myhre, G.Univ. of Oslo, Oslo, N
Penner, J. E.Univ. of Michigan, Ann Arbor, MI, USA
Pitari, G.Universita degli Studi L’Aquila, I
Reddy, M. S.CNRS, Villeneuve d'Ascq, F
Seland, Ø.Univ. of Oslo, Oslo, N
Stier, P.MPI, Hamburg
Takemura, T.Kyushu Univ., Fukuoka, J
Tie, X.NCAR, Boulder, CO, USA
Date:2007
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:7
Page Range:pp. 4489-4501
Status:Published
Keywords:aerosols, emissions, global models
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Dr.rer.nat. Johannes Hendricks
Deposited On:07 Sep 2007
Last Modified:20 Oct 2014 14:32

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