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An AeroCom initial assessment–optical properties in aerosol component modules of global models

Kinne, S. and Schulz, M. and Textor, C. and Guibert, S. and Balkanski, Y. and Bauer, S.E. and Berntsen, T. and Berglen, T.F. and Boucher, O. and Chin, M. and Collins, W. and Dentener, F. and Diehl, T. and Easter, R. and Feichter, J. and Fillmore, D. and Ghan, S. and Ginoux, P. and Gong, S. and Grini, A. and Hendricks, J. and Herzog, M. and Horowitz, L. and Isaksen, I. and Iversen, T. and Kirkevåg, A. and Kloster, S. and Koch, D. and Kristjansson, J. E. and Krol, M. and Lauer, A. and Lamarque, J. F. and Lesins, G. and Liu, X. and Lohmann, U. and Montanaro, V. and Myhre, G. and Penner, J. and Pitari, G . and Reddy, S. and Seland, O. and Stier, P. and Takemura, T. and Tie, X. (2006) An AeroCom initial assessment–optical properties in aerosol component modules of global models. Atmospheric Chemistry and Physics, 6, pp. 1815-1834.

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Official URL: http://www.atmos-chem-phys.net/6/1815/2006/

Abstract

The AeroCom exercise diagnoses multi-component aerosol modules in global modeling. In an initial assessment simulated global distributions for mass and mid-visible aerosol optical thickness (aot) were compared among 20 different modules. Model diversity was also explored in the context of previous comparisons. For the component combined aot general agreement has improved for the annual global mean. At 0.11 to 0.14, simulated aot values are at the lower end of global averages suggested by remote sensing from ground (AERONET ca. 0.135) and space (satellite composite ca. 0.15). More detailed comparisons, however, reveal that larger differences in regional distribution and significant differences in compositional mixture remain. Of particular concern are large model diversities for contributions by dust and carbonaceous aerosol, because they lead to significant uncertainty in aerosol absorption (aab). Since aot and aab, both, influence the aerosol impact on the radiative energy-balance, the aerosol (direct) forcing uncertainty in modeling is larger than differences in aot might suggest. New diagnostic approaches are proposed to trace model differences in terms of aerosol processing and transport: These include the prescription of common input (e.g. amount, size and injection of aerosol component emissions) and the use of observational capabilities from ground (e.g. measurements networks) or space (e.g. correlations between aerosol and clouds).

Document Type:Article
Title:An AeroCom initial assessment–optical properties in aerosol component modules of global models
Authors:
AuthorsInstitution or Email of Authors
Kinne, S.MPI für Meteorologie, Hamburg
Schulz, M.LSCE, Gif-sur-Yvette, F
Textor, C.LSCE, Gif-sur-Yvette, F
Guibert, S.LSCE, Gif-sur-Yvette, F
Balkanski, Y.LSCE, Gif-sur-Yvette, F
Bauer, S.E.Columbia Univ., New York, NY, USA
Berntsen, T.Univ. of Oslo, Oslo, N
Berglen, T.F.Univ. of Oslo, Oslo, N
Boucher, O.LSCE, Gif-sur-Yvette, F
Chin, M.Greenbelt, MD, USA
Collins, W.NCAR, Boulder, Colorado, USA
Dentener, F.EC, Joint Research Centre, Ispra, I
Diehl, T.UMBC, Baltimore, MD, USA
Easter, R.Pacific Northwest National Lab., Richland, USA
Feichter, J.MPI für Meteorologie, Hamburg
Fillmore, D.NCAR, Boulder, Colorado, USA
Ghan, S.Pacific Northwest National Lab., Richland, USA
Ginoux, P.NOAA, Princeton, NJ, USA
Gong, S.ARQM Meteorological Service Canada, Toronto, CDN
Grini, A.Univ. of Oslo, Oslo, N
Hendricks, J.UNSPECIFIED
Herzog, M.NOAA, Princeton, NJ, USA
Horowitz, L.NOAA, Princeton, NJ, USA
Isaksen, I.Univ. of Oslo, Oslo, N
Iversen, T.Univ. of Oslo, Oslo, N
Kirkevåg, A.Univ. of Oslo, Oslo, N
Kloster, S.MPI für Meteorologie, Hamburg
Koch, D.Columbia University, New York, NY, USA
Kristjansson, J. E.Univ. of Oslo, Oslo, N
Krol, M.IMAU, Utrecht, NL
Lauer, A.UNSPECIFIED
Lamarque, J. F.NCAR, Boulder, Colorado, USA
Lesins, G.Dalhousie Univ., Halifax, CND
Liu, X.Univ. of Michigan, Ann Arbor, MI, USA
Lohmann, U.ETH Zürich, CH
Montanaro, V.Univ. degli Studi L’Aquila, L’Aquila, I
Myhre, G.Univ. of Oslo, Oslo, N
Penner, J.Univ. of Michigan, Ann Arbor, MI, USA
Pitari, G .Univ. degli Studi L’Aquila, L’Aquila, I
Reddy, S.NOAA, Princeton, NJ, USA
Seland, O.Univ. of Oslo, Oslo, N
Stier, P.MPI für Meteorologie, Hamburg
Takemura, T.Kyushu Univ., Fukuoka, J
Tie, X.NCAR, Boulder, Colorado, USA
Date:2006
Journal or Publication Title:Atmospheric Chemistry and Physics
Volume:6
Page Range:pp. 1815-1834
Status:Published
Keywords:atmospheric aerosols, global modelling, model intercomparison, aerosol optical properties
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Jana Freund
Deposited On:27 Sep 2007
Last Modified:12 Dec 2013 20:20

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