Titan's stratospheric seasonal variations up to the end of the Cassini mission

• Main Authors: Coustenis, Athena, Jennings, Donald, Achterberg, Richard, Lavvas, Panayotis, Bampasidis, Georgios, Nixon, Conor, Flasar, F. Michael
• Other Authors: Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Department of Astronomy College Park, University of Maryland College Park, University of Maryland System-University of Maryland System, Groupe de spectrométrie moléculaire et atmosphérique (GSMA), Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), National and Kapodistrian University of Athens (NKUA), NASA Goddard Space Flight Center (GSFC)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2019
• Subjects: [SDU]Sciences of the Universe [physics]; South Pole; South pole
• Online Access: https://hal.archives-ouvertes.fr/hal-02358219

International audience We have monitored the seasonal evolution near Titan's poles and equator from 2012 until the last flyby of Titan in 2017. The 2017 data we have acquired and processed here are very important as they also show that the Southern pole is finally showing a significant decrease in abundance. Indeed, in the Titan south pole stratosphere some molecules had preserved their enhancement until end of 2016, before suffering a sudden and large drop in abundance in 2017. This is indicative of a non-symmetrical response to the seasons in Titan's stratosphere that can set constraints on photochemical and GCM models.