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A climatology of tides in the Antarctic mesosphere and lower thermosphere

Murphy, D.J.; Forbes, J.M.; Walterscheid, R.L.; Hagan, M.E.; Avery, S.K.; Aso, T.; Fraser, G.J.; Fritts, D.C.; Jarvis, M.J.; McDonald, A.J.; Riggin, D.M.; Tsutsumi, M.; Vincent, R.A.. 2006 A climatology of tides in the Antarctic mesosphere and lower thermosphere. Journal of Geophysical Research, 111 (D23), D23104. 17, pp. 10.1029/2005JD006803

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Abstract/Summary

A function that approximates atmospheric tidal behavior in the polar regions is described. This function is fitted to multistation radar measurements of wind in the mesosphere and lower thermosphere with the aim of obtaining a latitude-longitude-height description of the variation of tides over the whole Antarctic continent. Archival wind data sets are combined with present-day ones to fill the spatial distribution of the observations and to reduce the potential effects of spatial aliasing. Multiple years are combined through the compilation of monthly station composite days, yielding results for each month of the year. Despite potential problems associated with year-to-year variations in the tidal phase, a useful climatology of Antarctic zonal and meridional tidal wind components is compiled. The results of the fits reproduce the major features of the high-latitude tidal wind field: the dominance of the semidiurnal migrating mode in the winter months and the presence of a semidiurnal zonal wave number one component in the summer months. It is also found that the summer semidiurnal tide contains a zonal wave number zero component.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1029/2005JD006803
Programmes: BAS Programmes > Global Science in the Antarctic Context (2005-2009) > Sun Earth Connections
ISSN: 0148-0227
Additional Information. Not used in RCUK Gateway to Research.: Full text not available from this repository
NORA Subject Terms: Atmospheric Sciences
Date made live: 10 Sep 2007 13:53
URI: http://nora.nerc.ac.uk/id/eprint/961

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