Evidence for Diurnal period Kelvin waves in the Martian atmosphere from Mars Global Surveyor TES data

Details Evidence for Diurnal period Kelvin waves in the Martian atmosphere from Mars Global Surveyor TES data Evidence for Diurnal period Kelvin waves in the Martian atmosphere from Mars Global Surveyor TES data

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3889w&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 23, p. 3889-3892

Physics

31

Meteorology And Atmospheric Dynamics: Planetary Meteorology, Meteorology And Atmospheric Dynamics: Waves And Tides, Planetology: Solid Surface Planets: Atmospheres-Structure And Dynamics

Scientific paper

Midlevel (~25 km) atmospheric temperatures derived from Mars Global Surveyor (MGS) Thermal Emission Spectrometer (TES) spectra indicate the presence of stationary waves and thermal tides. Stationary waves are prominent at middle to high latitudes where westerly zonal flow is indicated by the meridional temperature gradient. Longitudinal variability within 30°S to 30°N is dominated by topographically-forced nonmigrating thermal tides that have westward and eastward propagating components. The MGS mapping data are available at two fixed local times so that it is not possible to distinguish between these components or isolate the sun-synchronous tide. A comparison with Mars general circulation model (MGCM) simulations suggests that the observed wave patterns are consistent with the presence of eastward propagating, diurnal period Kelvin waves with zonal wavenumbers one and two. These waves can propagate to great heights and may account for observed zonal variations in thermospheric density.

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