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| Titel |
First observation of mesospheric wind shear as high as 330 m s-1 km-1 |
| VerfasserIn |
Y.-F. Wu, H.-U. Widdel, D. Offermann |
| 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 ; 13, no. 9 ; Nr. 13, no. 9, S.954-958 |
| Datensatznummer |
250011980
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| Publikation (Nr.) |
 copernicus.org/angeo-13-954-1995.pdf |
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| Zusammenfassung |
| Mesospheric wind profiles with an altitude
resolution of 25 m have been obtained by means of radar tracking of foil chaff
clouds. Such experiments were performed during winter 1990 at Biscarrosse,
France (44°N, 1°W). On one flight, a wind shear as high
as 330 m s–1 km–1 at 87.4 km and a region of dynamical
instability between 86 and 88 km was measured. This wind shear is believed to be
the largest value ever measured in the mesosphere. The region of dynamical
instability results from a superposition of two wave motions, and is found to
link well with enhanced turbulence and small-scale wave activity. |
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