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| Titel |
Options to accelerate ozone recovery: ozone and climate benefits |
| VerfasserIn |
J. S. Daniel, E. L. Fleming, R. W. Portmann, G. J. M. Velders, C. H. Jackman, A. R. Ravishankara |
| 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 ; 10, no. 16 ; Nr. 10, no. 16 (2010-08-18), S.7697-7707 |
| Datensatznummer |
250008714
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| Publikation (Nr.) |
 copernicus.org/acp-10-7697-2010.pdf |
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| Zusammenfassung |
| Hypothetical reductions in future emissions of ozone-depleting substances
(ODSs) and N2O are evaluated in terms of effects on equivalent
effective stratospheric chlorine (EESC), globally-averaged total column
ozone, and radiative forcing through 2100. Due to the established success of
the Montreal Protocol, these actions can have only a fraction of the impact
on ozone depletion that regulations already in force have had. If all
anthropogenic ODS and N2O emissions were halted beginning in 2011,
ozone is calculated to be higher by about 1–2% during the period
2030–2100 compared to a case of no additional restrictions. Direct radiative
forcing by 2100 would be about 0.23 W/m2 lower from the elimination of
anthropogenic N2O emissions and about 0.005 W/m2 lower from the
destruction of the chlorofluorocarbon (CFC) bank. Due to the potential
impact of N2O on future ozone levels, we provide an approach to
incorporate it into the EESC formulation, which is used extensively in ozone
depletion analyses. The ability of EESC to describe total ozone changes
arising from additional ODS and N2O controls is also quantified. |
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