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| Titel |
Climate forcing and air quality change due to regional emissions reductions by economic sector |
| VerfasserIn |
D. Shindell  , J.-F. Lamarque, N. Unger, D. Koch, G. Faluvegi, S. Bauer, M. Ammann, J. Cofala, H. Teich |
| 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 ; 8, no. 23 ; Nr. 8, no. 23 (2008-12-08), S.7101-7113 |
| Datensatznummer |
250006484
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| Publikation (Nr.) |
 copernicus.org/acp-8-7101-2008.pdf |
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| Zusammenfassung |
| We examine the air quality (AQ) and radiative forcing (RF) response to
emissions reductions by economic sector for North America and developing
Asia in the CAM and GISS composition/climate models. Decreases in annual
average surface particulate are relatively robust, with intermodel
variations in magnitude typically <30% and very similar spatial
structure. Surface ozone responses are small and highly model dependent. The
largest net RF results from reductions in emissions from the North America
industrial/power and developing Asia domestic fuel burning sectors. Sulfate
reductions dominate the first case, for which intermodel variations in the
sulfate (or total) aerosol optical depth (AOD) responses are ~30%
and the modeled spatial patterns of the AOD reductions are highly correlated
(R=0.9). Decreases in BC dominate the developing Asia domestic fuel burning
case, and show substantially greater model-to-model differences. Intermodel
variations in tropospheric ozone burden changes are also large, though aerosol
changes dominate those cases with substantial net climate forcing. The
results indicate that across-the-board emissions reductions in domestic fuel
burning in developing Asia and in surface transportation in North America
are likely to offer the greatest potential for substantial, simultaneous
improvement in local air quality and near-term mitigation of global climate
change via short-lived species. Conversely, reductions in industrial/power
emissions have the potential to accelerate near-term warming, though they
would improve AQ and have a long-term cooling effect on climate. These broad
conclusions appear robust to intermodel differences. |
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