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The abundance, vertical distribution and origin of H₂O in Titan’s atmosphere: Herschel observations and photochemical modelling

Hartogh, Paul; Lellouch, Emmanuel; Lara, Luisa M. +4 more

Disk-averaged observations of water vapor in Titan’s atmosphere acquired with the Herschel satellite are reported. We use a combination of unresolved measurements of three H₂O rotational lines at 66.4, 75.4 and 108.0 µm with the PACS instrument, and spectrally-resolved observations of two other transitions at 557 GHz (538 µm…