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| Titel |
The 8-h tide in the mesosphere and lower thermosphere over Maui (20.75° N, 156.43° W) |
| VerfasserIn |
G. Jiang, J. Xu, S. J. Franke |
| 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 ; 27, no. 5 ; Nr. 27, no. 5 (2009-05-04), S.1989-1999 |
| Datensatznummer |
250016517
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| Publikation (Nr.) |
 copernicus.org/angeo-27-1989-2009.pdf |
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| Zusammenfassung |
| Wind data collected by the Maui meteor radar (20.75° N, 156.43° W)
are used to study the 8-h tide in the mesosphere and lower thermosphere
(MLT) region at a low-latitude station. The data set spans the time interval
from 19 May 2002 to 24 May 2007. Our results show that the 8-h tide is a
regular and distinct feature over Maui. The meridional component of this
wave is significantly larger than the zonal component. The meridional
component exhibits a semiannual variation in amplitude, with peaks near the
equinoxes, whereas the variation of the zonal component does not show this
seasonal characteristic. The strongest wave motions mostly occur in the
height range of 92–96 km near spring equinox (March) and at higher
altitudes near autumn equinox (October). The vertical variations of 8-h
tidal phase at Maui indicate an upward wave energy flux. The vertical
wavelengths are ≥54 km in equinox months. |
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