Search Publications

Atmosphere/mantle coupling and feedbacks on Venus

Gillmann, Cedric; Tackley, Paul

We investigate the coupled evolution of the atmosphere and mantle on Venus. Here we focus on mechanisms that deplete or replenish the atmosphere: atmospheric escape to space and volcanic degassing of the mantle. These processes are linked to obtain a coupled model of mantle convection and atmospheric evolution, including feedback of the atmosphere…

The Venus nighttime atmosphere as observed by the VIRTIS-M instrument. Average fields from the complete infrared data set

Drossart, P.; Piccioni, G.; Lebonnois, S. +7 more

We present and discuss here the average fields of the Venus atmosphere derived from the nighttime observations in the 1960-2350 cm^-1 spectral range by the VIRTIS-M instrument on board the Venus Express satellite. These fields include: (a) the air temperatures in the 1-100 mbar pressure range (~85-65 km above the surface), (b) the altitu…

Modeling VIRTIS/VEX O₂(a1∆g) nightglow profiles affected by the propagation of gravity waves in the Venus upper mesosphere

Bellucci, G.; Altieri, F.; Piccioni, G. +3 more

In this work we describe a model of the perturbation of the O₂(a¹Δ_g) nightglow limb profiles by the action of gravity waves (GWs) propagating in the Venus' upper atmosphere. Data have been acquired by the Visible and InfraRed Thermal Imaging Spectrometer (VIRTIS) on board the European Space Agency mission Venus Exp…