HR: 0830h
AN: SA21A-11    [Abstracts]
TI: Characteristics of Waves in the Upper Mesosphere from Ground-Based Airglow Measurements in the Northern High-Latitude
AU: * Won, Y
EM: won408@erau.edu
AF: Department of Physical Sciences Embry-Riddle Aeronautical University, 600 S. Clyde Morris Blvd. , Daytona Beach, FL 32114 United States
AU: Azeem, I
AF: Department of Physical Sciences Embry-Riddle Aeronautical University, 600 S. Clyde Morris Blvd. , Daytona Beach, FL 32114 United States
AU: Sivjee, G G
AF: Department of Physical Sciences Embry-Riddle Aeronautical University, 600 S. Clyde Morris Blvd. , Daytona Beach, FL 32114 United States
AB: Terrestrial nightglow emissions in the near infrared region have been monitored from several ground-based optical observatories in the northern high latitude; Eureka (80.0 N, 85.9 W), and Resolute Bay (74.68 N, 94.90 W), Canada. Spectral analysis of the derived rotational temperatures yields the periodicities of the atmospheric waves that are known to propagate upward from the lower atmosphere and perturb the airglow brightness and the rotational temperatures in the upper atmosphere. Spectral features at various periods are found and investigated in relation to atmospheric tides and planetary waves. The commonly observed features are waves near the tidal periods, i.e. 6, 8, and 12 hour oscillations. The data also show fluctuations at longer periods of 4-day and quasi-16 day waves. Harmonic analysis is also performed to seasonal data sets to identify the amplitudes and phase information of the major oscillations over season.
DE: 0310 Airglow and aurora
DE: 0340 Middle atmosphere--composition and chemistry
DE: 3384 Waves and tides
DE: 9315 Arctic region
SC: SPA-Aeronomy [SA]
MN: 2005 Joint Assembly