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| Titel |
Evaluation of aerosol number concentrations in NorESM with improved nucleation parameterization |
| VerfasserIn |
R. Makkonen, Ø. Seland, A. Kirkevåg, T. Iversen, J. E. Kristjánsson |
| 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 ; 14, no. 10 ; Nr. 14, no. 10 (2014-05-26), S.5127-5152 |
| Datensatznummer |
250118735
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| Publikation (Nr.) |
 copernicus.org/acp-14-5127-2014.pdf |
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| Zusammenfassung |
| The Norwegian Earth System Model (NorESM) is evaluated against atmospheric
observations of aerosol number concentrations. The model is extended to
include an explicit mechanism for new particle formation and secondary
organic aerosol (SOA) formation from biogenic precursors. Three nucleation
mechanisms are included in NorESM: binary sulfuric acid, activation type, and
organic nucleation. Ten model experiments are conducted to study the
sensitivity of the simulated aerosol number concentrations to nucleation, SOA
formation, black carbon size distribution and model meteorology. Simulated
vertical profiles are evaluated against 12 flight campaigns. Comparison of
monthly averaged aerosol number concentrations against 60 measurement sites
reveals that the model with explicit nucleation and SOA scheme performs well
in terms of correlation coefficient, R2 = 0.41 and a bias of −6%. NorESM
generally overestimates the amplitude of the seasonal cycle, possibly due to
underestimated sinks or exaggerated sensitivity to biogenic precursors. |
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