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rto x-P 8; a ine –1, HS ns These data are part of a coordinated observational campaign in support of the ESA Venus Express mission. Furthermore, this study attempts to contribute to cross-calibrate space- and ground-based observations, to constrain radiative transfer and retrieval algorithms is orbiting around Venus since 11 April 2006. Both spacecrafts carried out multi-point observations of the observations of both its day and night sides. the combination of two different wind regimes (a retro-grade super-rotation and a sub-solar to anti-solar tant role in the investigation of the poorly constrained Venus mesosphere (it is the only technique to provide direct wind measurements in the mesosphere). Carbon ARTICLE IN PRES