Observations of the CO2 and Dust Cycles on Mars as Seen by MOLA

Details Observations of the CO2 and Dust Cycles on Mars as Seen by MOLA Observations of the CO2 and Dust Cycles on Mars as Seen by MOLA

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm...p32a02s&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #P32A-02 INVITED

Physics

6015 Dust, 6225 Mars

Scientific paper

MOLA altimeter observations during the first Mars year of mapping by the Mars Global Surveyor spacecraft have shown that the instrument operates as an atmospheric lidar system as well as an altimeter. The observations of the topography in the polar regions and of the clouds show the seasonal changes in the planet's surface elevation and in the distribution of clouds and dust. Elevation changes occur at both poles along with the appearance and disappearance of clouds that suggest deposition of CO2 snow during certain seasons. Rapid changes in elevation appear to correlate with changes in atmospheric temperature. In addition, at certain times the altimeter signal is completely scattered or absorbed by the atmosphere and these periods are found to coincide with significant dust activity in the martian atmosphere enabling MOLA to observe the development of intense dust events and their progress around the planet.

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