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VIRTIS

• Study of the lower atmosphere composition below the clouds and its variations (CO, OCS, SO 2 , H 2 O) from night side observations
• Study the cloud structure, composition and scattering properties (day side observations)
• Cloud tracking in the UV (70 km, day side) and IR (50 km, night side)
• Determination of the temperature field and zonal wind in an altitude range from 60 – 100 km (night side)
• Lightning search (night side)
• Mesospheric sounding: understanding the transition region between troposphere and thermosphere
• Non- LTE O 2 emission (night/day side) at 1.27 µm (95-110 km)
• CO 2 fluorescence (day side): non –LTE emissions at 4.3 µm (>80 km)
• Limb observations (CO, CO 2 ), atmospheric vertical structure (> 60 km, day/night side)
• Search for variations related to surface/atmosphere interactions, dynamics, meteorology and volcanism
• Temperature mapping of the surface, search for hot spots related to volcanic activity