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Medientyp:
E-Artikel
Titel:
Modeling the formation of secondary organic aerosol within a comprehensive air quality model system
Beteiligte:
Schell, Benedikt;
Ackermann, Ingmar J.;
Hass, Heinz;
Binkowski, Francis S.;
Ebel, Adolf
Erschienen:
American Geophysical Union (AGU), 2001
Erschienen in:
Journal of Geophysical Research: Atmospheres, 106 (2001) D22, Seite 28275-28293
Sprache:
Englisch
DOI:
10.1029/2001jd000384
ISSN:
0148-0227
Entstehung:
Anmerkungen:
Beschreibung:
The Secondary Organic Aerosol Model (SORGAM) has been developed for use in comprehensive air quality model systems. Coupled to a chemistry‐transport model, SORGAM is capable of simulating secondary organic aerosol (SOA) formation including the production of low‐volatility products and their subsequent gas/particle partitioning. The current model formulation assumes that all SOA compounds interact and form a quasi‐ideal solution. This has significant impact on the gas/particle partitioning, since in this case the saturation concentrations of the SOA compounds depend on the composition of the SOA and the amount of absorbing material present. Box model simulations have been performed to investigate the sensitivity of the model against several parameters. Results clearly show the importance of the temperature dependence of saturation concentrations on the partitioning process. Furthermore, SORGAM has been coupled to the comprehensive European Air Pollution and Dispersion/Modal Aerosol Dynamics Model for Europe air quality model system, and results of a three‐dimensional model application are presented. The model results indicate that assuming interacting SOA compounds, biogenic and anthropogenic contributions significantly influence each other and cannot be treated independently.