HR: 0800h
AN: SA31A-1110    [Abstracts]
TI: Multi-year High Latitude Mesospheric Neutral Wind Observations Using a Fabry-Perot Interferometer
AU: Gablehouse, R D
EM: rdg@ucar.edu
AF: HAO/NCAR, P.O.Box 3000, Boulder, Co 80307-3000 United States
AU: * Wu, Q
EM: qwu@ucar.edu
AF: HAO/NCAR, P.O.Box 3000, Boulder, Co 80307-3000 United States
AU: Killeen, T L
EM: killeen@ucar.edu
AF: HAO/NCAR, P.O.Box 3000, Boulder, Co 80307-3000 United States
AU: Solomon, S C
EM: stans@ucar.edu
AF: HAO/NCAR, P.O.Box 3000, Boulder, Co 80307-3000 United States
AB: From 1995 to 1999, a Fabry-Perot Interferometer (FPI) was stationed at Resolute Bay, Canada (75N, 95W) to measure the mesospheric neutral winds in the polar cap from the OH nightglow emission during winter seasons. A 12-hour wave is the most prominent feature in the neutral winds. The wave amplitude has large day-to-day variations and inter-annual variability, whereas the phase of the wave appears to be largely consistent. Small phase shift from early winter to later winter was noticed during most of the seasons when early winter data were available. The 12-hour wave showed stronger variability during the 1995/1996 winter season, which may be related to the non-linear interaction with planetary waves. Large negative zonal winds were observed during stratospheric sudden warming events.
DE: 3332 Mesospheric dynamics
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3360 Remote sensing
DE: 3384 Waves and tides
DE: 3319 General circulation
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting