HR: 1340h
AN: P13A-0141    [Abstracts]
TI: Generation of Planetary Waves Near the Surface in a General Circulation Model of the Martian Atmosphere
AU: * Saito, R
EM: saitoryu@mps.mpg.de
AU: Medvedev, A S
P13A-0141 AU: Hartogh, P
P13A-0141 AB: The rough surface topography, a shallow planetary boundary layer, and a small atmospheric density atmosphere indicate that the surface plays a significant role in generating planetary waves in the atmosphere of Mars. These waves propagate upward and horizontally, redistribute wave momentum and energy, and thus affect the mean zonal circulation. We use MAOAM, a newly developed General Circulation Model of the Martian atmosphere, to study the effects of the surface on the planetary wave excitation. In a series of numerical experiments, we explore the relative role of the surface topography, inhomogeneity of the thermal inertia and the planetary albedo in generating planetary waves as well as their effect on the solar tide. A particular emphasis is made on the effects of these waves on the mean circulation in the middle atmosphere of Mars. Some validation of the model results is done using the Thermal Emission Spectrometer (TES) measurements.
DE: 0343 Planetary atmospheres (5210, 5405, 5704)
DE: 3319 General circulation (1223)
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3389 Tides and planetary waves
DE: 6225 Mars
SC: Planetary Sciences [P]
MN: Fall Meeting 2005