HR: 0830h
AN: SA41B-0447    [PDF]
TI: Seasonal wind fields as determined by the TIMED Doppler Interferometer (TIDI)
AU: * Skinner, W
EM: wskinner@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Niciejewski, R
EM: niciejew@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Killeen, T
EM: killeen@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307 United States
AU: Solomon, S
EM: stans@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307 United States
AU: Gablehouse, D
EM: rdg@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307 United States
AU: Wu, Q
EM: qwu@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307 United States
AU: Ortland, D
EM: ortland@nwra.com
AF: NWRA, P.O. Box 3027, Bellevue, WA 94025 United States
AU: Gell, D
EM: gellda@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Marshall, A
EM: arm@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Wolfe, E
EM: ewolfe@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Cooper, M
EM: mlcooper@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Kafkalidis, J
EM: juliek@umich.edu
AF: Space Physics Research Lab, 2455 Hayward, Ann Arbor, MI 48109 United States
AB: The TIMED Doppler Interferometer (TIDI) has been measuring the wind field in the mesosphere and lower thermosphere since early 2002. The instrument is a Fabry-Perot interferometer that simultaneously samples the limb of the Earth with four separate telescopes providing two forward views and two rearward views, one of each on either side of the orbital path. At equator crossings, these two side views are separated by about 30 degrees of longitude at the tangent point altitude, or 2 hours of local time. On any orbit TIDI obtains two horizontal vector winds at the dayside equator crossing and two on the nightside equator crossing for all low latitudes. The precession rate of TIMED requires a two month average of data to sample all local solar times This paper will describe the wind field that has been determined by the TIDI since operations commenced. The mean wind and tidal amplitudes are examined and seasonal variability examined. Results are also compared to fields measured earlier by HRDI and WINDII on the UARS spacecraft.
DE: 0310 Airglow and aurora
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting