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| Titel |
Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind |
| VerfasserIn |
Y. I. Portnyagin, T. V. Solovjova |
| 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. 3 ; Nr. 18, no. 3, S.300-315 |
| Datensatznummer |
250013933
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| Publikation (Nr.) |
 copernicus.org/angeo-18-300-2000.pdf |
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| Zusammenfassung |
An updated empirical climatic zonally
averaged prevailing wind model for the upper mesosphere/lower thermosphere
(70-110 km), extending from 80°N to 80°S is presented. The model is
constructed from the fitting of monthly mean winds from meteor radar and MF
radar measurements at more than 40 stations, well distributed over the globe.
The height-latitude contour plots of monthly mean zonal and meridional winds for
all months of the year, and of annual mean wind, amplitudes and phases of annual
and semiannual harmonics of wind variations are analyzed to reveal the main
features of the seasonal variation of the global wind structures in the Northern
and Southern Hemispheres. Some results of comparison between the ground-based
wind models and the space-based models are presented. It is shown that, with the
exception of annual mean systematic bias between the zonal winds provided by the
ground-based and space-based models, a good agreement between the models is
observed. The possible origin of this bias is discussed.
Key words: Meteorology and Atmospheric dynamics
(general circulation; middle atmosphere dynamics; thermospheric dynamics) |
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