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| Titel |
Equilibrium of sinks and sources of sulphate over Europe: comparison between a six-year simulation and EMEP observations |
| VerfasserIn |
M. Ménégoz, D. Salas y Melia, M. Legrand, H. Teyssèdre, M. Michou, V.-H. Peuch, M. Martet, B. Josse, I. Dombrowski-Etchevers |
| 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 ; 9, no. 13 ; Nr. 9, no. 13 (2009-07-14), S.4505-4519 |
| Datensatznummer |
250007498
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| Publikation (Nr.) |
 copernicus.org/acp-9-4505-2009.pdf |
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| Zusammenfassung |
| Sulphate distributions were simulated with a global chemistry transport
model. A chemical scheme describing the sulphur cycle and the
parameterisations of the main sinks for sulphate aerosols were included in
the model. A six-year simulation was conducted from the years 2000 to 2005,
driven by the ECMWF operational analyses. Emissions come from an inventory
representative of the year 2000. This paper focuses on the analysis of the
sulphate sinks and sources over Europe for the entire period of simulation.
The Sulphate burden shows a marked annual cycle, which is the result of the
annual variations of the aqueous and gaseous chemistry. Regionally, the
monthly mean aerosol burden can vary by a factor of 2 from one year to
another, because of different weather conditions, driving chemistry,
transport and wet deposition of sulphate aerosols. Sulphate ground
concentrations, scavenging fluxes and precipitation modelled were compared
with observations. The model represents quite well sulphate fields over
Europe, but has a general tendency to overestimate sulphate ground
concentrations, in particular over Northern Europe. We assume that it is
linked to the representation of the scavenging fluxes, which are
underestimated. We suggest that uncertainties in modelled precipitation
explain only partially the underestimation of the scavenging fluxes in the
model. |
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