HR: 14:40h
AN: SA33A-05    [Abstracts]
TI: The Climatology of Neutral Winds in the MLT Region as Observed From Orbit
AU: * Niciejewski, R
EM: niciejew@umich.edu
AF: The University of Michigan, Space Research Lab 2455 Hayward St, Ann Arbor, MI 48109 United States
AU: Skinner, W
EM: wskinner@umich.edu
AF: The University of Michigan, Space Research Lab 2455 Hayward St, Ann Arbor, MI 48109 United States
AU: Gell, D
EM: gellda@umich.edu
AF: The University of Michigan, Space Research Lab 2455 Hayward St, Ann Arbor, MI 48109 United States
AU: Cooper, M
EM: mlcooper@umich.edu
AF: The University of Michigan, Space Research Lab 2455 Hayward St, Ann Arbor, MI 48109 United States
AU: Marsh, A
EM: armarsh@umich.edu
AF: The University of Michigan, Space Research Lab 2455 Hayward St, Ann Arbor, MI 48109 United States
AU: Killeen, T
EM: killeen@ucar.edu
AF: National Center for Atmospheric Research, High Altitude Observatory 3450 Mitchell Ln, Boulder, CO 80301 United States
AU: Wu, Q
EM: qwu@ucar.edu
AF: National Center for Atmospheric Research, High Altitude Observatory 3450 Mitchell Ln, Boulder, CO 80301 United States
AU: Solomon, S
EM: stans@ucar.edu
AF: National Center for Atmospheric Research, High Altitude Observatory 3450 Mitchell Ln, Boulder, CO 80301 United States
AU: Ortland, D
EM: ortland@nwra.com
AF: NorthWest Research Associates, 14508 NE 20th St, Bellevue, WA 98007 United States
AU: Drob, D
EM: douglas.drob@nrl.navy.mil
AF: Naval Research Laboratory, Code 7640 4555 Overlook Ave, SW, Washington, DC 20375 United States
AU: Emmert, J
EM: emmert@uap2.nrl.navy.mil
AF: George Mason University, 4400 University Dr, Fairfax, VA 22030 United States
AB: Unique observations of the horizontal neutral winds in the altitude range 70 to 115 km have been performed from satellite platforms by HRDI and WINDII (UARS) and by TIDI (TIMED), the former since September 1991 and the latter since January 2002. All three experiments observed airglow on the terrestrial limb and derived vertical wind profiles of geophysical quantities by inverting altitude scans of Doppler shifted emission spectra. As a result, the global mesosphere / lower thermosphere region has been sampled for 14 years by a common technique resulting in an unparalleled neutral wind database. This database will be one of the key contributions to an improved Horizontal Wind Model (HWM). This paper will describe results from the first long term climatological study of the MLT region based on satellite wind measurements. The basic dynamic structure in the MLT is a tide, which also has long-term variation that has similar periods to the 27-month QBO (quasi-biennial oscillation) and the SAO (semi-annual oscillation). Signatures of ultra-long variability require analysis of the full wind database.
UR: http://tidi.engin.umich.edu
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 3309 Climatology (1616, 1620, 3305, 4215, 8408)
DE: 3332 Mesospheric dynamics
DE: 3369 Thermospheric dynamics (0358)
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005