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| Titel |
Mean winds of the mesosphere and lower thermosphere at 52° N in the period 1988–2000 |
| VerfasserIn |
H. R. Middleton, N. J. Mitchell, H. G. Muller |
| 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 ; 20, no. 1 ; Nr. 20, no. 1, S.81-91 |
| Datensatznummer |
250014344
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| Publikation (Nr.) |
 copernicus.org/angeo-20-81-2002.pdf |
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| Zusammenfassung |
A meteor radar in the UK
(near 52° N) has been used to measure the mean winds of the
mesosphere/lower-thermosphere (MLT) region over the period 1988–2000. The
seasonal course and interannual variability is characterised and comparisons
are made with a number of models. Annual mean wind trends were found to be +
0.37 ms-1 yr-1 for the zonal component and + 0.157 ms-1
yr-1 for the meridional component. Seasonal means revealed
significant trends in the case of meridional winds in spring ( + 0.38 ms-1
yr-1) and autumn ( + 0.29 ms-1 yr-1), and
zonal winds in summer ( + 0.48 ms-1 yr-1) and autumn ( +
0.38 ms-1 yr-1). Significant correlation coefficients, R,
between the sunspot number and seasonal mean wind are found in four instances.
In the case of the summer zonal winds, R = + 0.732; for the winter
meridional winds, R = - 0.677; for the winter zonal winds, R = -
0.472; and for the autumn zonal winds R = + 0.508.
Key words. Meteorology and
atmospheric dynamics (climatology; general circulation; middle atmospheric
dynamics) |
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