The formation, properties and impact of secondary organic aerosol: Current and emerging issues
Journal article, 2009
Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a
detailed knowledge of the formation, properties and transformation of SOA is therefore required to evaluate its impact on atmospheric processes, climate and human health.
The chemical and physical processes associated with SOA
formation are complex and varied, and, despite considerable
progress in recent years, a quantitative and predictive
understanding of SOA formation does not exist and therefore
represents a major research challenge in atmospheric
science. This review begins with an update on the current
state of knowledge on the global SOA budget and is followed
by an overview of the atmospheric degradation mechanisms
for SOA precursors, gas-particle partitioning theory
and the analytical techniques used to determine the chemical
composition of SOA. A survey of recent laboratory,
field and modeling studies is also presented. The following
topical and emerging issues are highlighted and discussed
in detail: molecular characterization of biogenic SOA constituents,
condensed phase reactions and oligomerization, the
interaction of atmospheric organic components with sulfuric
acid, the chemical and photochemical processing of organics
in the atmospheric aqueous phase, aerosol formation
from real plant emissions, interaction of atmospheric organic components with water, thermodynamics and mixtures in atmospheric models. Finally, the major challenges ahead in laboratory, field and modeling studies of SOA are discussed and recommendations for future research directions are proposed.
Author
Mattias Hallquist
University of Gothenburg
J. C. Wenger
University College Cork
U. Baltensperger
Paul Scherrer Institut
Y. Rudich
Weizmann Institute of Science
David Simpson
Chalmers, Department of Radio and Space Science, Global Environmental Measurements and Modelling
M. Claeys
University of Antwerp
J. Dommen
Paul Scherrer Institut
N. M. Donahue
Carnegie Mellon University (CMU)
C. George
Université de Lyon
Institut de Recherches sur la Catalyse et l'Environnement de Lyon
A. H. Goldstein
University of California
J. F. Hamilton
University of York
H. Herrmann
Leibniz Institute for Tropospheric Research
T. Hoffmann
Johannes Gutenberg University Mainz
Y. Iinuma
Leibniz Institute for Tropospheric Research
M. Jang
University of Florida
M. E. Jenkin
Atmospheric Chemistry Services
J. L. Jimenez
University of Colorado at Boulder
A. Kiendler-Scharr
Forschungszentrum Jülich
W. Maenhaut
Ghent Institute for Nuclear Sciences
G. McFiggans
University of Manchester
Th. F. Mentel
Forschungszentrum Jülich
A. Monod
Aix Marseille University
A. S. H. Prevot
Paul Scherrer Institut
J. H. Seinfeld
California Institute of Technology (Caltech)
J. D. Surratt
California Institute of Technology (Caltech)
R. Szmigielski
University of Antwerp
J. Wildt
Forschungszentrum Jülich
Atmospheric Chemistry and Physics
1680-7316 (ISSN) 1680-7324 (eISSN)
Vol. 9 14 5155-5236Subject Categories
Meteorology and Atmospheric Sciences
Chemical Sciences
DOI
10.5194/acp-9-5155-2009