HR: 0800h
AN: SA41A-1050    [Abstracts]
TI: Diurnal Tidal Variability Over the Equator: Model and Measurement Comparisons
AU: * Singleton, T
EM: tsingl@math.tulane.edu
AF: Tulane University, Department of Mathematics 6823 St. Charles, New Orleans, LA 70118 United States
AU: * Singleton, T
EM: tsingl@math.tulane.edu
AF: NCAR, HAO P.O. Box 3000, Boulder, CO 80307-3000 United States
AU: Hagan, M E
EM: hagan@ucar.edu
AF: NCAR, HAO P.O. Box 3000, Boulder, CO 80307-3000 United States
AU: Oberheide, J
EM: joberh@uni-wuppertal.de
AF: Wuppertal University, Physics Department Gauss Strasse 20, Wuppertal, D-42097 Germany
AU: Roble, R G
EM: roble@ucar.edu
AF: NCAR, HAO P.O. Box 3000, Boulder, CO 80307-3000 United States
AU: Russell, J M
EM: james.russell@hamptonu.edu
AF: Hampton University, Center for Atmospheric Sciences, Hampton, VA 23668 United States
AU: Mlynczak, M G
EM: m.g.mlynczak@larc.nasa.gov
AF: NASA/Langley Research Center, Radiation and Aerosol Branch 21 Langley Boulevard, Hampton, VA 23681 United States
AB: We compare equatorial migrating diurnal temperature estimates determined from measurements made by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite with predictions from the NCAR Thermosphere-Ionosphere-Mesosphere-Electrodynamics General Circulation Model (TIME-GCM) and the Global-Scale Wave Model (GSWM). We contrast the full model tidal results with diurnal tidal estimates determined from subsets of temperature predictions that represent what SABER would observe if it flew through the model atmospheres. Comparisons between the full and satellite sampled model temperatures suggest that there may be strong artifacts of the semidiurnal tide in the SABER diurnal tidal estimates above ~100 km.
DE: 3332 Mesospheric dynamics
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3384 Waves and tides
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting