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Climatology of SO2 and UV absorber at Venus' cloud top from SPICAV-UV nadir dataset
Montmessin, Franck; Bertaux, Jean-Loup; Korablev, Oleg +6 more
Following our previous work (Marcq et al., 2013, 2011), we have updated our forward radiative transfer code and processed the whole SPICAV-UV/Venus Express nadir dataset (2006-2014) in order to retrieve SO2 abundance at cloud top - assuming a SO2 decreasing scale height of 3 km and a ratio SO/SO2 tied to 10% - as w…
Multispectral surface emissivity from VIRTIS on Venus Express
Tsang, C. C. C.; Mueller, N. T.; Smrekar, S. E.
The surface composition of Venus is mostly inaccessible to remote observation due to the dense cloud cover. There are five spectral windows that show measurable thermal emission from the surface at night. The VIRTIS spectrometer on Venus Express observed three of these windows over much of the southern hemisphere of Venus. We use these data along …
SOIR/VEx observations of water vapor at the terminator in the Venus mesosphere
Vandaele, A. C.; Trompet, L.; Robert, S. +4 more
The Solar Occultation in the InfraRed (SOIR) instrument onboard Venus Express sounded the Venus mesosphere and lower thermosphere using solar occultation geometry between April 2006 and December 2014. The observations were all taken at the terminator. This paper reports on the water vapor vertical distribution above the clouds and geo-temporal var…
Global maps of Venus nightside mean infrared thermal emissions obtained by VIRTIS on Venus Express
Drossart, P.; Piccioni, G.; Grassi, D. +6 more
One of the striking features about Venus atmosphere is its temporal variability and dynamics, with a chaotic polar vortex, large-scale atmospheric waves, sheared features and variable winds that depend on local time and possibly orographic features. The aim of this research is to combine data accumulated over several years and obtain a global mean…
The ionosphere of Venus: Strongest control by photo-chemical-equilibrium in the solar system, with implications for exospheric temperatures
Pätzold, M.; Häusler, B.; Tellmann, S. +5 more
Profiles of electron density versus height obtained by the radio occultation experiment on Venus Express provide an observational data base suitable for semi-empirical modeling. The basic equations of photo-chemical-equilibrium (PCE) theory can be applied to the altitude range 100-170 km of Venus' ionosphere (Peter et al., 2014). Within that domai…