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A tropical haze band in Titan’s stratosphere

2010-05Artigo científico Acesso restrito
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datacite.subject.fosCiências Naturais::Ciências Físicas
datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorKok, R. de
dc.contributor.authorIrwin, P. G. J.
dc.contributor.authorTeanby, N. A.
dc.contributor.authorVinatier, S.
dc.contributor.authorTosi, F.
dc.contributor.authorNegrão, A.
dc.contributor.authorOsprey, S.
dc.contributor.authorAdriani, A.
dc.contributor.authorMoriconi, M. L.
dc.contributor.authorCoradini, A.
dc.date.accessioned2025-12-12T16:07:54Z
dc.date.available2025-12-12T16:07:54Z
dc.date.issued2010-05
dc.description.abstractInspection of near-infrared images from Cassini's Imaging Science Subsystem and Visual and Infrared Mapping Spectrometer have revealed a new feature in Titan's haze structure: a narrow band of increased scattering by haze south of the equator. The band seems to indicate a region of very limited mixing in the lower stratosphere, which causes haze particles to be trapped there. This could explain the sharp separation between the two hemispheres, known as the north-south asymmetry, seen in images. The separation of the two hemispheres can also be seen in the stratosphere above 150 km using infrared spectra measured by Cassini's Composite Infrared Spectrometer. Titan's behaviour in the lower tropical stratosphere is remarkably similar to that of the Earth's tropical stratosphere, which hints at possible common dynamical processes.eng
dc.description.sponsorshipWe thank P. Haynes, M. Hitchman and P. Read for comments regarding the Earth’s atmosphere. We thank the CIRS, ISS and VIMS teams for planning and operation. This research was funded by the UK Sciences and Technology Facilities Council.
dc.identifier.citationR. de Kok, P.G.J. Irwin, N.A. Teanby, S. Vinatier, F. Tosi, A. Negrão, S. Osprey, A. Adriani, M.L. Moriconi, A. Coradini, A tropical haze band in Titan’s stratosphere, Icarus, Volume 207, Issue 1, 2010, Pages 485-490, ISSN 0019-1035, https://doi.org/10.1016/j.icarus.2009.10.021.
dc.identifier.doi10.1016/j.icarus.2009.10.021
dc.identifier.eissn1090-2643
dc.identifier.issn0019-1035
dc.identifier.urihttp://hdl.handle.net/10400.8/15022
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0019103509004370?via%3Dihub
dc.relation.ispartofIcarus
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectTitan
dc.subjectAtmospheres
dc.subjectComposition
dc.subjectInfrared observations
dc.titleA tropical haze band in Titan’s stratosphereeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage490
oaire.citation.issue1
oaire.citation.startPage485
oaire.citation.titleIcarus
oaire.citation.volume207
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameNegrão
person.givenNameAlberto
person.identifier.orcid0000-0001-6042-1294
relation.isAuthorOfPublicationa4249a82-1904-4218-90fa-158b5c904c01
relation.isAuthorOfPublication.latestForDiscoverya4249a82-1904-4218-90fa-158b5c904c01

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Inspection of near-infrared images from Cassini's Imaging Science Subsystem and Visual and Infrared Mapping Spectrometer have revealed a new feature in Titan's haze structure: a narrow band of increased scattering by haze south of the equator. The band seems to indicate a region of very limited mixing in the lower stratosphere, which causes haze particles to be trapped there. This could explain the sharp separation between the two hemispheres, known as the north-south asymmetry, seen in images. The separation of the two hemispheres can also be seen in the stratosphere above 150 km using infrared spectra measured by Cassini's Composite Infrared Spectrometer. Titan's behaviour in the lower tropical stratosphere is remarkably similar to that of the Earth's tropical stratosphere, which hints at possible common dynamical processes.
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