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| Titel |
MALTE – model to predict new aerosol formation in the lower troposphere |
| VerfasserIn |
M. Boy, O. Hellmuth, H. Korhonen, E. D. Nilsson, D. ReVelle, A. Turnipseed, F. Arnold, M. Kulmala  |
| 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 ; 6, no. 12 ; Nr. 6, no. 12 (2006-10-06), S.4499-4517 |
| Datensatznummer |
250004132
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| Publikation (Nr.) |
 copernicus.org/acp-6-4499-2006.pdf |
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| Zusammenfassung |
| The manuscript presents a detailed description of the meteorological and
chemical code of Malte – a model to predict new aerosol formation in the
lower troposphere. The aerosol dynamics are achieved by the new developed
UHMA (University of Helsinki Multicomponent Aerosol Model) code with kinetic
limited nucleation as responsible mechanism to form new clusters. First
results indicate that the model is able to predict the on- and offset of new
particle formation as well as the total aerosol number concentrations that
were in good agreement with the observations. Further, comparison of
predicted and measured H2SO4 concentrations showed a satisfactory
agreement. The simulation results indicated that at a certain transitional
particle diameter (2–7 nm), organic molecules can begin to contribute
significantly to the growth rate compared to sulphuric acid. At even larger
particle sizes, organic molecules can dominate the growth rate on days with
significant monoterpene concentrations. The intraday vertical evolution of
newly formed clusters and particles in two different size ranges resulted in
two maxima at the ground. These particles grow around noon to the detectable
size range and agree well with measured vertical profiles. |
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