Journal
ICARUS
Volume 208, Issue 1, Pages 82-85Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.icarus.2010.02.007
Keywords
Mars, Polar Caps; Mars, Polar Geology; Mars, Atmosphere; Mars, Climate
Categories
Funding
- Mars Reconnaissance Orbiter Project
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We have used Mars Reconnaissance Orbiter data from 2007 and 2009 to compare summer behaviors of the seasonal and residual south polar caps of Mars in those two years. We find that the planet-encircling dust storm that occurred in the first of the two Mars years enhanced the loss of seasonal CO2 deposits relative to the second year but did not have a large effect on the continuing erosion of the pits and mesas within the residual cap materials. This suggests that the increase of bright frost in some regions of the residual cap observed between Mariner 9 and Viking can be accommodated within observed martian weather variability and does not require unknown processes or climate change. (C) 2010 Elsevier Inc. All rights reserved.
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