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| Titel |
Impact of emission changes on secondary inorganic aerosol episodes across Germany |
| VerfasserIn |
S. Banzhaf, M. Schaap, R. J. Wichink Kruit, H. A. C. Denier van der Gon, R. Stern, P. J. H. Builtjes |
| 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 ; 13, no. 23 ; Nr. 13, no. 23 (2013-12-03), S.11675-11693 |
| Datensatznummer |
250085849
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| Publikation (Nr.) |
 copernicus.org/acp-13-11675-2013.pdf |
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| Zusammenfassung |
| In this study, the response of secondary inorganic aerosol (SIA)
concentrations to changes in precursor emissions during high PM10
episodes over central Europe in spring 2009 was investigated with the
Eulerian Chemistry Transport Model (CTM) REM-Calgrid (RCG). The model
performed well in capturing the temporal variation of PM10 and SIA
concentrations and was used to analyse the different origin, development and
characteristics of the selected high PM10 episodes. SIA concentrations,
which contribute to about 50% of the PM10 concentration in
northwestern Europe, have been studied by means of several model runs for
different emission scenarios. SO2, NOx and NH3 emissions
have been varied within a domain covering Germany and within a domain
covering Europe. It was confirmed that the response of sulfate, nitrate and
ammonium concentrations and deposition fluxes of S and N to SO2,
NOx and NH3 emission changes is non-linear. The deviation from
linearity was found to be lower for total deposition fluxes of S and N than
for SIA concentrations. Furthermore, the study has shown that incorporating
explicit cloud chemistry in the model adds non-linear responses to the
system. It significantly modifies the response of modelled SIA concentrations
and S and N deposition fluxes to changes in precursor emissions. The analysis
of emission reduction scenario runs demonstrates that next to European-wide
emission reductions additional national NH3 measures in Germany are more
effective in reducing SIA concentrations and deposition fluxes than
additional national measures on SO2 and NOx. |
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