Summer Evolution of the North Polar Cap of Mars as Observed by OMEGA/Mars Express
Publication date: 11 March 2005
Authors: Langevin, Y., et al.
Copyright: Science Magazine
The Observatoire pour la Mineralogie, l'Eau, les Glaces, et l'Activite (OMEGA) visible-infrared imaging spectrometer extensively observed regions of Mars with latitudes above 70° N in late 2004 (heliocentric longitude from Ls 93° to Ls 127°). The extent of water ice at the surface and the size of ice grains were monitored as a function of time. Bright, small-grained frost, which initially covered a large fraction of the polar cap, waned in favor of large-grained ice. In outlying regions, dominated by largegrained ice, the albedo increased over the period. Evaluating the dust content was model dependent. However, contamination of ice by dust was low.Link to publication