Investigations of the Martian Neutral Atmosphere from the Radio Science Experiment MaRS on Mars Express

Details Investigations of the Martian Neutral Atmosphere from the Radio Science Experiment MaRS on Mars Express Investigations of the Martian Neutral Atmosphere from the Radio Science Experiment MaRS on Mars Express

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.4907s&link_type=abstract

American Astronomical Society, DPS meeting #41, #49.07

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The Radio Science Experiment MaRS on Mars Express is sounding the Martian atmosphere and ionosphere using the spacecraft radio subsystem.
Radial profiles of neutral number density are used to derive vertical profiles of temperature and pressure from the surface boundary layer up to 50 km with a vertical resolution of only a few hundred metres.
The highly elliptical orbit of Mars Express allows to study a large range of local times and locations and can therefore be used to investigate latitudinal, diurnal and seasonal variations. More than 500 profiles of temperature, pressure and neutral number density have been obtained in six occultation seasons so far, mostly in the northern hemisphere covering all latitudes during almost all seasons.
The high vertical resolution allows to investigate the strong variability of the surface boundary layer and to study temperature variations caused by eddies and waves.
Several temperature profiles are located in the polar regions of both hemispheres. These measurements will be used to show the seasonal variations in the high latitude range. Temperature and density variations as well as zonal winds and the influence of CO2 condensation will be shown in the presentation.

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