Observation of pressure variations in the Martian atmosphere

Details Observation of pressure variations in the Martian atmosphere Observation of pressure variations in the Martian atmosphere

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30asc14g&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 23, pp. ASC 14-1, CiteID 2227, DOI 10.1029/2003GL018234

Physics

2

Atmospheric Composition And Structure: Pressure, Density, And Temperature, Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

Pressure waves in the Martian atmosphere could so far be observed only in the presence of clouds. Thanks to the Mars Global Surveyor/Mars Orbiter Laser Altimeter (MGS/MOLA), a direct observation is now possible, with the method presented here. Many more events are thus potentially observable. We compare altimetry measurements from MGS/MOLA and spectral observations from ISM, the infrared spectrometer aboard the Phobos-2 spacecraft, to infer pressure variations in the Martian atmosphere. We identify variations of pressure above Martian volcanoes and we observe lee vortices of wavelength ~200-250 km and amplitude ~0.05 mbar in two different occasions. The application of this technique should constrain Martian meteorology with data from future imaging spectrometers.

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