Martian global-scale CO2 exchange from time-variable gravity measurements

Details Martian global-scale CO2 exchange from time-variable gravity measurements Martian global-scale CO2 exchange from time-variable gravity measurements

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgre..11106003k&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue E6, CiteID E06003

Physics

6

Planetary Sciences: Solar System Objects: Mars, Geodesy And Gravity: Lunar And Planetary Geodesy And Gravity (5417, 5450, 5714, 5744, 6019, 6250), Geodesy And Gravity: Time Variable Gravity (7223, 7230), Geodesy And Gravity: Global Change From Geodesy (1222, 1622, 1630, 1641, 1645, 4556), Planetary Sciences: Solid Surface Planets: Polar Regions

Scientific paper

The Martian CO2 cycle causes variations in the gravity field that can be detected by an orbiting spacecraft. The time-variable ΔC20 and ΔC30 reported from the radio tracking analysis of Mars Global Surveyor are used to calculate the seasonal changes in the polar cap masses as well as in the global atmospheric pressure. The results show a good agreement with the model-dependent solutions of general circulation models and CO2 thickness observations of the High Energy Neutron Detector on board Mars Odyssey.

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