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The Cassini-Huygens space mission revealed that Titan s thick brownish haze is initiated high in the atmosphere at about 1000 km of altitude, before a slow transportation down to the surface. Close to the surface at altitudes below 130 km,…

Earth and Planetary Astrophysics · Physics 2018-06-26 Nathalie Carrasco , Sarah Tigrine , Lisseth Gavilan , Laurent Nahon , Murthy S. Gudipati

In this paper we present a study of the vertical haze and cloud structure over a triple vortex in Saturn's atmosphere in the planetographic latitude range 55N-69N (del Rio- Gaztelurrutia et al. , 2018) using HST/WFC3 multispectral imaging.…

Earth and Planetary Astrophysics · Physics 2019-06-04 J. F. Sanz-Requena , S. Perez-Hoyos , A. Sanchez-Lavega , T. del Rio-Gaztelurrutia , P. G. J. Irwin

UV observations with Cassini ISS Narrow Angle Camera of Titan's detached haze is an excellent tool to probe its aerosols content without being affected by the gas or the multiple scattering. Unfortunately, its low extent in altitude…

Earth and Planetary Astrophysics · Physics 2017-04-05 Benoît Seignovert , Pascal Rannou , Panayotis Lavvas , Thibaud Cours , Robert A. West

In its decade of operation the Cassini mission has allowed us to look deep into Saturn's atmosphere and investigate the processes occurring below its enshrouding haze. We use Visual and Infrared Mapping Spectrometer (VIMS) 4.6-5.2 micron…

Earth and Planetary Astrophysics · Physics 2016-02-16 Joanna K Barstow , Patrick G. J. Irwin , Leigh N. Fletcher , Rohini S. Giles , Cecile Merlet

We used 0.85 - 5.1 micron 2006 observations by Cassini's Visual and Infrared Mapping Spectrometer (VIMS) to constrain the unusual vertical structure and compositions of cloud layers in Saturn's south polar region, the site of a powerful…

Earth and Planetary Astrophysics · Physics 2019-08-23 Lawrence A. Sromovsky , Kevin H. Baines , Patrick M. Fry

We present a reanalysis (using the Minnaert limb-darkening approximation) of visible/near-infrared (0.3 - 2.5 micron) observations of Uranus and Neptune made by several instruments. We find a common model of the vertical aerosol…

We analyze data from the final two years of the Cassini mission to retrieve the distributions of methane, ethane, acetylene, ethylene, and benzene in Saturn's upper stratosphere and mesosphere from stellar occultations observed by the…

Earth and Planetary Astrophysics · Physics 2024-05-06 Zarah L. Brown , Tommi T. Koskinen , Julianne I. Moses , Sandrine Guerlet

Cassini/ISS imagery and Cassini/VIMS spectral imaging observations from 0.35 to 5.12 microns show that between 2012 and 2017 the region poleward of the Saturn's northern hexagon changed from dark blue/green to a moderately brighter gold…

Earth and Planetary Astrophysics · Physics 2021-08-03 L. A. Sromovsky , K. H. Baines , P. M. Fry

A clustering algorithm is applied to Cassini Imaging Science Subsystem continuum and methane band images of Saturns northern hemisphere to objectively classify regional albedo features and aid in their dynamical interpretation. The…

Earth and Planetary Astrophysics · Physics 2017-09-26 Anthony D. Del Genio , John M. Barbara

Simulations of Titan's atmospheric transmission and surface reflectivity have been developed in order to estimate how Titan's atmosphere and surface properties could affect performances of the Cassini radar experiment. In this paper we…

Earth and Planetary Astrophysics · Physics 2009-07-17 S. Rodriguez , P. Paillou , M. Dobrijevic , G. Ruffié , P. Coll , J. M. Bernard , P. Encrenaz

Saturn's diffuse E ring consists of many tiny (micron and sub-micron) grains of water ice distributed between the orbits of Mimas and Titan. Various gravitational and non-gravitational forces perturb these particles' orbits, causing the…

Earth and Planetary Astrophysics · Physics 2015-06-03 M. M. Hedman , J. A. Burns , D. P. Hamilton , M. R. Showalter

Titan is one of the primary scientific objectives of the NASA ESA ASI Cassini Huygens mission. Scattering by haze particles in Titan's atmosphere and numerous methane absorptions dramatically veil Titan's surface in the visible range,…

Earth and Planetary Astrophysics · Physics 2009-07-17 S. Rodriguez , S. Le Mouélic , C. Sotin , H. Clénet , R. N. Clark , B. Buratti , R. H. Brown , T. B. Mccord , P. D. Nicholson , K. H. Baines

We present an analysis of data about Saturn's atmosphere from Cassini's Visual and Infrared Mapping Spectrometer (VIMS), focusing on the meteorology of the features seen in the 5-micron spectral window. We present VIMS mosaics and discuss…

Earth and Planetary Astrophysics · Physics 2013-01-28 David S. Choi , Adam P. Showman , Robert H. Brown

Haze in Pluto's atmosphere was detected in images by both the Long Range Reconnaissance Imager (LORRI) and the Multispectral Visible Imaging Camera (MVIC) on New Horizons. LORRI observed haze up to altitudes of at least 200 km above Pluto's…

We present an analysis of the VIMS solar occultations dataset, which allows us to extract vertically resolved information on the characteristics of Titan's atmosphere between 100-700 km with a characteristic vertical resolution of 10 km.…

Earth and Planetary Astrophysics · Physics 2014-11-21 L. Maltagliati , B. Bézard , S. Vinatier , M. M. Hedman , E. Lellouch , P. D. Nicholson , C. Sotin , R. J. de Kok , B. Sicardy

Seasonal variation is significant in Titan's atmosphere due to the large change of solar insolation resulting from Titan's 26.7{\deg} axial tilt relative to the plane of Saturn's orbit. Here we present an investigation of hydrocarbon and…

Earth and Planetary Astrophysics · Physics 2022-04-18 Siteng Fan , Daniel Zhao , Cheng Li , Donald E. Shemansky , Mao-Chang Liang , Yuk L. Yung

Titan's 'detached' haze, seen in Voyager images in 1980 and 1981 and monitored by the Cassini Imaging Science Subsystem (ISS), during the period 2004-2017, provides a measure of seasonal activity in Titan's mesosphere with observations over…

Earth and Planetary Astrophysics · Physics 2018-05-01 Robert A. West , Benoît Seignovert , Pascal Rannou , Philip Dumont , Elizabeth P. Turtle , Jason Perry , Mou Roy , Aida Ovanessian

The Cassini spacecraft made a gravity assist flyby of Jupiter in December 2000. The Imaging Science Subsystem (ISS) acquired images of the planet that covered the visual range with filters sensitive to the distribution of clouds and hazes,…

Earth and Planetary Astrophysics · Physics 2019-05-09 Iñaki Ordóñez-Etxeberria , Ricardo Hueso , Agustin Sánchez-Lavega , Santiago Pérez-Hoyos

Our analysis of Cassini/VIMS near-infrared spectra of Saturn's Great Storm of 2010-2011 reveals a multi-component aerosol composition comprised primarily of ammonia ice, with a significant component of water ice. The most likely third…

Earth and Planetary Astrophysics · Physics 2015-02-23 Lawrence Sromovsky , Kevin Baines , Patrick Fry

Our knowledge of Saturns neutral thermosphere is far superior to that of the other giant planets due to Cassini Ultraviolet Imaging Spectrograph (UVIS) observations of 15 solar occultations and 26 stellar occultations analyzed to date.…

Earth and Planetary Astrophysics · Physics 2016-10-26 Darrell F. Strobel , Tommi Koskinen , Ingo Mueller-Wodarg
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