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| Titel |
Potential effects on ozone of future supersonic aircraft/2D simulation |
| VerfasserIn |
R. Ramaroson, N. Louisnard |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 12, no. 10/11 ; Nr. 12, no. 10/11, S.986-995 |
| Datensatznummer |
250010336
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| Publikation (Nr.) |
 copernicus.org/angeo-12-986-1994.pdf |
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| Zusammenfassung |
| In a previous work, the stratospheric effect
of a future supersonic aircraft fleet on ozone has been simulated, by using a
photochemical diffusive 1D model and a 2D photochemical, radiative dynamical
model. The fleet scenario was defined by Aerospatiale and Snecma for a current
technology Mach-2 aircraft; the models were limited to simplified homogeneous
phase reactions. The results indicated a global ozone decrease of about 1.5% in
steady-state conditions. Now the 2D model has been upgraded and includes the
classical heterogeneous reactions with Polar Stratospheric Clouds (PSC) and
aerosol. It also takes into account the natural or anthopogenic evolution of the
background atmosphere. The scenario has been optimized to meet more realistic
conditions. Thus, new results are presented. The main conclusion concerning the
calculated impact of a realistic fleet for the next 20-50 years is still weaker
than in the previous work: the decrease for the total ozone would always be
lower than 0.3%. These results are commented, with the help of a parametric
study, pointing out the importance of the background atmosphere and especially
the total chlorine loading and the aerosol surface area. |
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