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| Titel |
Lunar tidal winds in the upper atmosphere over Collm |
| VerfasserIn |
R. J. Stening, C. Jacobi |
| 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 ; 18, no. 12 ; Nr. 18, no. 12, S.1645-1650 |
| Datensatznummer |
250014109
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| Publikation (Nr.) |
 copernicus.org/angeo-18-1645-2000.pdf |
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| Zusammenfassung |
| The lunar semidiurnal tide in winds measured
at around 90 km altitude has been isolated with amplitudes observed up to 4 m s–1.
There is a marked amplitude maximum in October and also a considerable phase
variation with season. The average variation of phase with height indicated a
vertical wavelength of more than 80 km but this, and other results, needs to be
viewed in the light of the considerable averaging required to obtain statistical
significance. Large year-to-year variations in both amplitude and phase were
also found. Some phase comparisons with the GSWM model gave reasonable agreement
but the model amplitudes above a height of 100 km were much larger than those
measured. An attempt to make a comparison with the lunar geomagnetic tide did
not yield a statistically significant result.
Key words: Meteorology and atmospheric dynamics (middle
atmosphere dynamics; waves and tides) |
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