HR: 0830h
AN: SA41B-0452    [PDF]
TI: Modeling the MLT Region in Light of Measurements From the TIMED Mission
AU: * Mayr, H G
EM: hmayr@pop900.gsfc.nasa.gov
AF: Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD 20771 United States
AU: Mengel, J G
EM: jmengel@pop900.gsfc.nasa.gov
AF: Science Systems and Applications, 10210 Greenbelt Rd., Lanham, MD 20706 United States
AU: Talaat, E R
EM: Elsayed.Talaat@jhuapl.edu
AF: Applied Physics Laboratory, 1100 Johns Hopkins Rd., Laurel, MD 20723 United States
AU: Porter, H S
EM: Hayden.Porter@furman.edu
AF: Furman University, 3300 Pointset Rd., Greenville, SC 29613 United States
AB: Our Numerical Spectral Model (NSM) extends from the ground up to the thermosphere and incorporates Hines' Doppler Spread Parameterization for small-scale gravity waves. This model describes in the mesosphere the major features of: (a) the equatorial oscillations (QBO and SAO), (b) the migrating as well as non-migrating tides, and (c) the planetary waves. The model also generates distinct intra-seasonal oscillations with periods around 3 months and planetary-scale inertio gravity waves with periods around 10 hours. After a review of the model and major findings, we discuss the scientific investigations to be carried out with the measurements from the TIMED mission. As part of this investigation, we shall attempt to describe the observations empirically (statistically) with vector spherical harmonics that delineate the temperature and wind fields in terms of zonal wave numbers, m = 0 to 4. The spectral formulation of the model allows us then to study the observed dynamical components and their interactions. With emphasis on the dynamics and energetics of the mesosphere, we shall compare some of our model simulations with temperature data from SABER and winds derived from TIDI measurements. We shall also present model predictions for comparison with coordinated ground-based observations.
DE: 3319 General circulation
DE: 3332 Mesospheric dynamics
DE: 3337 Numerical modeling and data assimilation
DE: 3367 Theoretical modeling
DE: 3384 Waves and tides
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting