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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
Sprache Englisch
ISSN 0992-7689
Digitales Dokument URL
Erschienen In: Annales Geophysicae ; 20, no. 1 ; Nr. 20, no. 1, S.81-91
Datensatznummer 250014344
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/angeo-20-81-2002.pdf
 
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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