Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa41a0274a&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SA41A-0274
Physics
0310 Airglow And Aurora, 3334 Middle Atmosphere Dynamics (0341, 0342), 3389 Tides And Planetary Waves
Scientific paper
Tidal variations in OH rotational temperatures have been investigated using observations from Michelson Interferometer instruments located at Resolute Bay (74.68º N, 94.90º W), Canada, and South Pole Station, Antarctica (90o S). These stations have been making continuous measurements of temperature and airglow emissions during the six months of each polar winter night. In this paper we present multi-year data from the two sites and perform spectral analysis to retrieve wave characteristics (amplitude and phase information). From the Lomb-Scargle spectral analysis of the measured temperatures, dominant oscillations are found at various periods near tidal frequencies, i.e. 8, 12, and 24 hour. Because of periods and persistence, the observed oscillations in temperature are most likely of tidal origin. Results will be discussed in the context of short variability and long term modulation of these tidal components.
Azeem I.
Patel Pankaj
Sivjee G. G.
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