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| Titel |
The relative importance of impacts from climate change vs. emissions change on air pollution levels in the 21st century |
| VerfasserIn |
G. B. Hedegaard, J. H. Christensen, J. Brandt |
| 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. 7 ; Nr. 13, no. 7 (2013-04-02), S.3569-3585 |
| Datensatznummer |
250018565
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| Publikation (Nr.) |
 copernicus.org/acp-13-3569-2013.pdf |
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| Zusammenfassung |
| So far several studies have analysed the impacts of climate change on future
air pollution levels. Significant changes due to impacts of climate change
have been made clear. Nevertheless, these changes are not yet included in
national, regional or global air pollution reduction strategies. The changes
in future air pollution levels are caused by both impacts from climate change
and anthropogenic emission changes, the importance of which needs
to be quantified and compared. In this study we use the Danish Eulerian
Hemispheric Model (DEHM) driven by meteorological input data from the coupled
Atmosphere-Ocean General Circulation Model ECHAM5/MPI-OM and forced with the
newly developed RCP4.5 emissions. The relative importance of the climate
signal and the signal from changes in anthropogenic emissions on the future
ozone, black carbon (BC), total particulate matter with a diameter below
2.5 μm (total PM2.5 including BC, primary organic carbon
(OC), mineral dust and secondary inorganic aerosols (SIA)) and total nitrogen
(including NHx + NOy) has been determined. For ozone, the
impacts of anthropogenic emissions dominate, though a climate penalty is
found in the Arctic region and northwestern Europe, where the signal from
climate change dampens the effect from the projected emission reductions of
anthropogenic ozone precursors. The investigated particles are even more
dominated by the impacts from emission changes. For black carbon the emission
signal dominates slightly at high latitudes, with an increase up to an order
of magnitude larger, close to the emission sources in temperate and
subtropical areas. Including all particulate matter with a diameter below
2.5 μm (total PM2.5) enhances the dominance from emissions
change. In contrast, total nitrogen (NHx + NOy) in parts
of the Arctic and at low latitudes is dominated by impacts of climate change. |
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