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An uppermost haze layer above 100 km found over Venus by the SOIR instrument onboard Venus Express

Vandaele, Ann Carine; Robert, Séverine; Mahieux, Arnaud +3 more

The Solar Occultation in the InfraRed (SOIR) instrument onboard Venus Express was designed to measure the Venusian atmospheric transmission at high altitudes (65–220 km) in the infrared range (2.2–4.3 µm) with a high spectral resolution. In this work, we investigate the optical properties of Venus's haze layer above 90 km using SOIR solar oc…