Date: 10 Feb 2004
Depicts: PFS spectrum
Location: Over the south polar cap
Copyright: ESA

CO₂ ice features are observed at 2725, 2770, 3000 and 3330 cm^-1.
A similar spectrum, observed at the equator of Mars, is shown for comparison. The three bands between 2840 and 2950 cm^-1 are due to contamination of the pointing mirror, caused in space by an, as yet, unknown reason. Note that the bands are not deep, indicating that water ice may also be present.