Chapter 6: Titan’s Atmospheric Structure, Composition, Haze, and Dynamics
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Veronique Vuitton↗
Engineering topics
Nicholas A Teanby
Publications and source records attributed to Nicholas A Teanby.
Modelling the seasonal cycle of Uranus’s colour and magnitude, and comparison with Neptune
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Patrick G J Irwin↗
Water Heavily Fractionated as it Ascends on Mars as Revealed by ExoMars/NOMAD
Isotopic ratios, and in particular the water D/Hratio, are powerful tracers of the evolutionand transportof water on Mars. From measurements performed with ExoMars/NOMAD, we observe dramatic and rapid variability of the D/H along altitude on Mars and across the whole planet. The observations (from April 2018 to April 2019) sample a broad range of events on Mars, including aglobal dust storm, the evolution ofwater released from the southern polar cap during southern summer, the equinox phases, and a short but intense regional dust storm. In three instances, we observe water at very high altitudes (>80 km), the prime region where water is photo-dissociated andstarts its escape to space.Rayleigh distillation appears the be the driving force affecting the D/H in many cases, yet in someinstances,the exchange of water reservoirs with distinctive D/H could be responsible.
Geronimo L Villanueva↗