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| Titel |
Periodicities in energy dissipation rates in the auroral mesosphere/lower thermosphere |
| VerfasserIn |
C. M. Hall, S. Nozawa, C. E. Meek, A. H. Manson, Y. Luo |
| 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 ; 21, no. 3 ; Nr. 21, no. 3, S.787-796 |
| Datensatznummer |
250014595
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| Publikation (Nr.) |
 copernicus.org/angeo-21-787-2003.pdf |
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| Zusammenfassung |
It is possible for
medium-frequency (MF) radar systems to estimate kinetic energy dissipation
rates by measuring signal fading times. Here, we present approximately 5 years
of such results from Tromsø (69° N, 19° E) and in particular, investigate
the periodicities present at different altitudes in the regime 80 to 100 km. We
detect the known annual variation in the mesosphere and the semiannual
variation on the lower thermosphere. In addition, other features are observed
including terannual and ~ 27-day components in the lower thermosphere.
Key words. Meteorology and
atmospheric dynamics (climatology; middle atmosphere dynamics; turbulence) |
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