Mean winds of the mesosphere and lower thermosphere at 52° N in the period 1988 2000

Details Mean winds of the mesosphere and lower thermosphere at 52° N in the period 1988 2000 Mean winds of the mesosphere and lower thermosphere at 52° N in the period 1988 2000

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002angeo..20...81m&link_type=abstract

Annales Geophysicae, vol. 20, Issue 1, pp.81-91

Physics

10

Scientific paper

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.

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