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| Titel |
The morphology of oxygen greenline dayglow emission |
| VerfasserIn |
S. Tyagi, V. Singh |
| 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 ; 16, no. 12 ; Nr. 16, no. 12, S.1599-1606 |
| Datensatznummer |
250013598
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| Publikation (Nr.) |
 copernicus.org/angeo-16-1599-1998.pdf |
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| Zusammenfassung |
In this study, the morphology of the oxygen
greenline dayglow emission is presented. The volume emission rate profiles are
obtained by using Solomon's glow model. The glow model is updated in terms of
recent cross sections, reaction rate coefficients and quantum yield of greenline
emission. Throughout most of the thermosphere the modelled and observed emission
rates are in reasonably good agreement. In the region between 98 and 120 km, the
modelled emission rates are substantially higher (about a factor of 1.7) than
the observed emission rates. This discrepancy is discussed in terms of scaling
of solar fluxes which accounts the variation of solar activity for the day on
which calculations are made. The modelled morphology of greenline emission is
compared with those cases where WINDII data is available. The modelled and
observed morphology is in reasonably good agreement at most of the latitudes
above 120 km. In the mesosphere the qualitative nature of morphology is very
similar to those of WINDII observation except the modelled emission rates are
about a factor of 1.7 higher than the observed emission rates.
Keywords. Ionosphere (ion chemistry and composition;
modeling and forecasting; solar radiation and cosmic ray effects). |
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