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Communication Dans Un Congrès Année : 2015

Titan's temporal evolution in stratospheric trace gases near the poles

Résumé

We analyze spectra acquired by the Cassini/Composite Infrared Spectrometer (CIRS) at high resolution from October 2010 until September 2014 in nadir mode. Up until mid 2012, Titan's Northern atmosphere exhibited the enriched chemical content found since the Voyager days (November 1980), with a peak around the Northern Spring Equinox (NSE) in 2009. Since then, we have observed the appearance at Titan's south pole of several trace species for the first time, such as HC3N and C6H6, observed only at high northern latitudes before equinox. We investigate here latitudes poleward of 50°S and 50°N from 2010 (after the Southern Autumnal Equinox : SAE) until 2014.
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Dates et versions

hal-03734191 , version 1 (21-07-2022)

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Athéna Coustenis, D. Jennings, Richard K. Achterberg, Georgios Bampasidis, P. Lavvas, et al.. Titan's temporal evolution in stratospheric trace gases near the poles. European Planetary Science Congress 2015, Sep 2015, Nantes, France. ⟨hal-03734191⟩
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