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| Titel |
A detailed aerosol mixing state model for investigating interactions between mixing state, semivolatile partitioning, and coagulation |
| VerfasserIn |
J. Lu, F. M. Bowman |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 8 ; Nr. 10, no. 8 (2010-04-29), S.4033-4046 |
| Datensatznummer |
250008388
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| Publikation (Nr.) |
 copernicus.org/acp-10-4033-2010.pdf |
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| Zusammenfassung |
| A new method for describing externally mixed particles, the Detailed Aerosol
Mixing State (DAMS) representation, is presented in this study. This novel
method classifies aerosols by both composition and size, using a
user-specified mixing criterion to define boundaries between compositional
populations. Interactions between aerosol mixing state, semivolatile
partitioning, and coagulation are investigated with a Lagrangian box model
that incorporates the DAMS approach. Model results predict that mixing state
affects the amount and types of semivolatile organics that partition to
available aerosol phases, causing external mixtures to produce a more
size-varying composition than internal mixtures. Both coagulation and
condensation contribute to the mixing of emitted particles, producing a
collection of multiple compositionally distinct aerosol populations that
exists somewhere between the extremes of a strictly external or internal
mixture. The selection of mixing criteria has a significant impact on the
size and type of individual populations that compose the modeled aerosol
mixture. Computational demands for external mixture modeling are significant
and can be controlled by limiting the number of aerosol populations used in
the model. |
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