Seasonal evolution of Titan's dark polar hood: Midsummer disappearance observed by the Hubble Space Telescope

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Abstract

Titan, Saturn's largest moon, has a dense organic-laden atmosphere that displays dramatic seasonal variations in composition and appearance. Here we document the evolution of the dark polar hood, first seen in 1980 by Voyager 1 around the north pole, and report quantitative measurements of the hood's disappearance from the south pole in 2002-2003 using previously unpublished observations with the Hubble Space Telescope Advanced Camera for Surveys (HST/ACS). These data support a model of the hood as a transient structure associated with downwelling during polar winter. © 2006 RAS.

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Lorenz, R. D., Lemmon, M. T., & Smith, P. H. (2006). Seasonal evolution of Titan’s dark polar hood: Midsummer disappearance observed by the Hubble Space Telescope. Monthly Notices of the Royal Astronomical Society, 369(4), 1683–1687. https://doi.org/10.1111/j.1365-2966.2006.10405.x

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