Atmos. Chem. Phys., 6, 2017-2038, 2006
www.atmos-chem-phys.net/6/2017/2006/
doi:10.5194/acp-6-2017-2006
© Author(s) 2006. This work is licensed under the
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Critical assessment of the current state of scientific knowledge, terminology, and research needs concerning the role of organic aerosols in the atmosphere, climate, and global change
S. Fuzzi1, M. O. Andreae2, B. J. Huebert3, M. Kulmala4, T. C. Bond5, M. Boy4, S. J. Doherty6, A. Guenther7, M. Kanakidou8, K. Kawamura9, V.-M. Kerminen10, U. Lohmann11, L. M. Russell12, and U. Pöschl2,13
1Istituto di Scienze dell’Atmosfera e del Clima, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
2Biogeochemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
3Department of Oceanography, University of Hawaii, Honolulu, HI 96822, USA
4Department of Physical Sciences, University of Helsinki, 00014 Helsinki, Finland
5Department of Civil and Environmental Engineering, University of Illinois, Urbana, IL 61801, USA
6IGAC Core Project Office, Seattle, WA 98115, USA
7Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO 80307-3000, USA
8Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, 71409 Heraklion, Greece
9Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan USA
10Finnish Meteorological Institute, 00810 Helsinki, Finland
11ETH, Institute for Atmospheric and Climate Science, 8093 Zurich, Switzerland Germany
12Scripps Institution of Oceanography, University of California, La Jolla, CA 92093-0221, USA
13Institute of Hydrochemistry, Technical University of Munich, 81377 Munich, Germany

Abstract. In spite of impressive advances in recent years, our present understanding of organic aerosol (OA) composition, physical and chemical properties, sources and transformation characteristics is still rather limited, and their environmental effects remain highly uncertain. This paper discusses and prioritizes issues related to organic aerosols and their effects on atmospheric processes and climate, providing a basis for future activities in the field. Four main topical areas are addressed: i) sources of OA; ii) formation transformation and removal of OA; iii) physical, chemical and mixing state of OA; iv) atmospheric modelling of OA. Key questions and research priorities regarding these four areas are synthesized in this paper, and outstanding issues for future research are presented for each topical area. In addition, an effort is made to formulate a basic set of consistent and universally applicable terms and definitions for coherent description of atmospheric OA across different scales and disciplines.

Citation: Fuzzi, S., Andreae, M. O., Huebert, B. J., Kulmala, M., Bond, T. C., Boy, M., Doherty, S. J., Guenther, A., Kanakidou, M., Kawamura, K., Kerminen, V.-M., Lohmann, U., Russell, L. M., and Pöschl, U.: Critical assessment of the current state of scientific knowledge, terminology, and research needs concerning the role of organic aerosols in the atmosphere, climate, and global change, Atmos. Chem. Phys., 6, 2017-2038, doi:10.5194/acp-6-2017-2006, 2006.
 
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