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| Titel |
Air pollution control and decreasing new particle formation lead to strong climate warming |
| VerfasserIn |
R. Makkonen, A. Asmi, V.-M. Kerminen, M. Boy, A. Arneth, P. Hari, M. Kulmala  |
| 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 ; 12, no. 3 ; Nr. 12, no. 3 (2012-02-08), S.1515-1524 |
| Datensatznummer |
250010643
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| Publikation (Nr.) |
 copernicus.org/acp-12-1515-2012.pdf |
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| Zusammenfassung |
| The number concentration of cloud droplets determines several climatically
relevant cloud properties. A major cause for the high uncertainty in the
indirect aerosol forcing is the availability of cloud condensation nuclei
(CCN), which in turn is highly sensitive to atmospheric new particle
formation. Here we present the effect of new particle formation on
anthropogenic aerosol forcing in present-day (year 2000) and future (year
2100) conditions. The present-day total aerosol forcing is increased from
−1.0 W m−2 to −1.6 W m−2 when nucleation is introduced into the
model. Nucleation doubles the change in aerosol forcing between years 2000
and 2100, from +0.6 W m−2 to +1.4 W m−2. Two climate feedbacks are
studied, resulting in additional negative forcings of −0.1 W m−2 (+10% DMS
emissions in year 2100) and −0.5 W m−2 (+50% BVOC emissions in year
2100). With the total aerosol forcing diminishing in response to air
pollution control measures taking effect, warming from increased greenhouse
gas concentrations can potentially increase at a very rapid rate. |
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