Diurnal tide in the Antarctic and Arctic mesosphere/lower thermosphere regions

The behaviour of the diurnal tide at 95 km over various years between 1965 and 1986 is studied using radar data from Heiss Island (81°N), Mawson (67°S), Molodezhnaya (68°S) and Scott Base (78°S). The observations are also compared with the model results of FORBES and HAGAN [(1988) Planet. Space Sci....

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Bibliographic Details
Published in:Journal of Atmospheric and Terrestrial Physics
Main Authors: Fraser, G., Portnyagin, Y., Forbes, J., Vincent, R., Lysenko, I., Makarov, N.
Format: Article in Journal/Newspaper
Language:English
Published: Pergamon Press 1995
Subjects:
Antarctic
Arctic
Forbes
Hagan
Molodezhnaya
Scott Base
The Antarctic
Antarc*
Online Access:http://hdl.handle.net/2440/12550
https://doi.org/10.1016/0021-9169(94)E0010-K
Description
Summary:The behaviour of the diurnal tide at 95 km over various years between 1965 and 1986 is studied using radar data from Heiss Island (81°N), Mawson (67°S), Molodezhnaya (68°S) and Scott Base (78°S). The observations are also compared with the model results of FORBES and HAGAN [(1988) Planet. Space Sci. 36, 579] for the same latitudes. There are substantial fluctuations in amplitude and phase at all stations, particularly in winter. Phase fluctuations can be as large as a uniform random distribution over the 24-h cycle. In summmer the phases of the meridional components are well defined and suggest the presence of a dominant symmetric mode. The meridional amplitudes are larger in summer whereas the zonal components have a greater variation and show no significant variation with season. © 1994.

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