Mars atmospheric surface interactions and the CO2 cycle

Eos, Transactions, American Geophysical Union
By:  and 



Mars' northern and southern seasonal polar caps are formed during their respective autumn and winter seasons both by condensation of atmospheric carbon dioxide (CO2) directly onto the surface, and through atmospheric precipitation in the form of CO2 snow. During the polar spring and summer, the seasonal ice sublimes, returning CO2 to the atmosphere.

Roughly 25% of the atmosphere, which is 95% CO2 by volume, is cycled through the seasonal caps annually. This CO2 cycle dominates atmospheric circulation on Mars and must be thoroughly understood before the fundamental questions about Mars' climate history and the global distribution of near‐surface water can be addressed.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mars atmospheric surface interactions and the CO2 cycle
Series title Eos, Transactions, American Geophysical Union
DOI 10.1029/2005EO460006
Volume 86
Issue 46
Year Published 2011
Language English
Publisher American Geophysical Union
Publisher location Washington, D.C.
Contributing office(s) Astrogeology Science Center
Description 2 p.
Other Geospatial Mars
Google Analytic Metrics Metrics page
Additional metadata about this publication, not found in other parts of the page is in this table