Fig. B.1
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Posterior distribution for the Cassini/VIMS retrieval of Titan data using the HITRAN cross-sections (red) and the ExoMol cross-sections (blue). The stratospheric hydrocarbon abundances, inferred from other studies, are also shown in orange for ISO/Hershel (Coustenis et al. 2003), in teal for Cassini/CIRS (nominal mission 2004-2010, Coustenis et al. 2010), and in red for Cassini/CIRS (extended mission 2014, Coustenis et al. 2016; Sylvestre et al. 2018). The literature value for CO is from Maltagliati et al. (2015). While slightly different chemical compositions are quoted in the literature - depending on the probed altitudes and observations - overall, the retrieval agrees well with prior knowledge of Titan’s stratosphere. The atmosphere is also consistent with the presence of small (μr ~ 0.2 μm) haze particles extending as high as 0.1 mbar, with a deeper cloud cover (modeled here with CH4 condensates) composed of larger particles (μr ~ 0.4 μm).
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