HR: 11:10h
AN: SA52A-04 INVITED     [Abstracts]
TI: TIDAL FEATURES IN THE ARCTIC AND ANTARCTIC HIGH-LATITUDE MESOSPHERIC TEMPERATURE OBSERVATIONS
AU: * Azeem, I
EM: azeem71d@erau.edu
AF: Embry-Riddle Aeronautical University, 600 S Clyde Morris Blvd, Daytona Beach, FL 32114, United States
AU: Won, Y
EM: won408@erau.edu
AF: Embry-Riddle Aeronautical University, 600 S Clyde Morris Blvd, Daytona Beach, FL 32114, United States
AU: Sivjee, G
EM: sivjee@erau.edu
AF: Embry-Riddle Aeronautical University, 600 S Clyde Morris Blvd, Daytona Beach, FL 32114, United States
AB: OH ariglow temperature measurements have been monitored from Resolute Bay (74.68º N, 94.90º W), Canada in the Arctic high latitude and South Pole (90º S) in the Antarctic high latitude region. Temperature measurements at both locations are derived from identical Michelson interferometer (MI) instruments operating continuously (24 hours) during winter season. For this study, we have used multi-year data base for the two sites and performed spectral analysis to retrieve wave characteristics (amplitude and phase information). From the Lomb-Scargle spectral analysis to the measured temperatures, dominant oscillations are found at various periods near tidal frequency, 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.
DE: 0310 Airglow and aurora
DE: 3332 Mesospheric dynamics
DE: 3389 Tides and planetary waves
SC: SPA-Aeronomy [SA]
MN: 2007 Joint Assembly