Monitoring Atmospheric Dust Opacity at High Latitudes on Mars by Imaging Spectroscopy Douté, S. ; Ceamanos, X. ; Appéré, T. ; Vincendon, M. ; Langevin, Y. ; OMEGA Team Abstract Publication: Mars Atmosphere: Modelling and observation Pub Date: February 2011 Bibcode: 2011mamo.conf..106D