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| Titel |
MATCH-SALSA – Multi-scale Atmospheric Transport and CHemistry model coupled to the SALSA aerosol microphysics model – Part 1: Model description and evaluation |
| VerfasserIn |
C. Andersson, R. Bergstrom, C. Bennet, L. Robertson, M. Thomas, H. Korhonen, K. E. J. Lehtinen, H. Kokkola |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 8, no. 2 ; Nr. 8, no. 2 (2015-02-06), S.171-189 |
| Datensatznummer |
250116104
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| Publikation (Nr.) |
 copernicus.org/gmd-8-171-2015.pdf |
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| Zusammenfassung |
We have implemented the sectional aerosol dynamics model SALSA (Sectional
Aerosol module for Large Scale Applications) in the European-scale
chemistry-transport model MATCH (Multi-scale Atmospheric Transport and
Chemistry). The new model is called MATCH-SALSA. It includes aerosol
microphysics, with several formulations for nucleation, wet scavenging and
condensation.
The model reproduces observed higher particle number concentration (PNC) in
central Europe and lower concentrations in remote regions. The modeled PNC
size distribution peak occurs at the same or smaller particle size as the
observed peak at four measurement sites spread across Europe. Total PNC is
underestimated at northern and central European sites and accumulation-mode
PNC is underestimated at all investigated sites. The low nucleation rate
coefficient used in this study is an important reason for the
underestimation. On the other hand, the model performs well for particle mass
(including secondary inorganic aerosol components), while elemental and
organic carbon concentrations are underestimated at many of the sites.
Further development is needed, primarily for treatment of secondary organic
aerosol, in terms of biogenic emissions and chemical transformation.
Updating the biogenic secondary organic aerosol
(SOA) scheme will likely have a large impact on modeled
PM2.5 and also affect the model performance for PNC through impacts on
nucleation and condensation. |
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