Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992angeo..10..874g&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 10, no. 11-12, p. 874-886.
Physics
3
Atmospheric Physics, Atmospheric Tides, Meridional Flow, Thermosphere, Diurnal Variations, F 2 Region, Ionosondes
Scientific paper
The tidal bahavior of the meridional thermospheric wind derived from ionosonde data for a set of longitudinally aligned ionosonde statison at 35 deg S and N has been analyzed. The results obtained are compared with the tidal predictions of the HWM 87 empirical wind model and other theoretical models. The best agreement between observations and models was obtained over the Australian network, and over Wallops Island station. The comparison of the monthly evolution of the diurnal and semidiurnal tides shows the existence of longitudinal changes in both components in the case of observational results, and in the diurnalcomponent in the case of the HWM 87 predictions. For the latter model the semidiurnal component remains practically unchanged with longitude. A quantitative analysis of these longitudinal differences was carried out.
Giraldez Alberto Enrique
Osvaldo Canziani Pablo
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