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| Titel |
Meteor radar quasi 2-day wave observations over 10 years at Collm (51.3° N, 13.0° E) |
| VerfasserIn |
F. Lilienthal, Ch. Jacobi |
| 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 ; 15, no. 17 ; Nr. 15, no. 17 (2015-09-02), S.9917-9927 |
| Datensatznummer |
250120014
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| Publikation (Nr.) |
 copernicus.org/acp-15-9917-2015.pdf |
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| Zusammenfassung |
| The quasi 2-day wave (QTDW) at 82–97 km altitude over Collm
(51° N, 13° E) has been observed using a VHF meteor radar.
The long-term mean amplitudes calculated using data between September 2004
and August 2014 show a strong summer maximum and a much weaker winter
maximum. In summer, the meridional amplitude is slightly larger than the
zonal one with about 15 m s−1 at 91 km height. Phase differences
are slightly greater than 90° on an average. The periods of the
summer QTDW vary between 43 and 52 h during strong bursts, while in
winter the periods tend to be more diffuse. On average, the summer QTDW is
amplified after a maximum of zonal wind shear which is connected with the
summer mesospheric jet and there is a possible correlation of the summer mean
amplitudes with the background wind shear. QTDW amplitudes exhibit
considerable inter-annual variability; however, a relationship between the
11-year solar cycle and the QTDW is not found. |
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