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Influence of neutral transport on ion chemistry uncertainties in Titan ionosphere

hal.structure.identifierLaboratoire de Chimie Physique D'Orsay [LCPO]
dc.contributor.authorCARRASCO, Nathalie
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorHÉBRARD, Eric
hal.structure.identifierSpace Research Centre of Polish Academy of Sciences [CBK]
dc.contributor.authorBANASZKIEWICZ, M.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorDOBRIJEVIC, M.
hal.structure.identifierLaboratoire de Chimie Physique D'Orsay [LCPO]
dc.contributor.authorPERNOT, P.
dc.date.issued2007
dc.identifier.issn0019-1035
dc.description.abstractEnModels of Titan ionospheric chemistry have shown that ion densities depend strongly on the neutral composition. The turbulent diffusion transport conditions, as modeled by eddy coefficients, can spectacularly affect the uncertainty on predicted neutral densities. In order to evaluate the error budget on ion densities predicted by photochemical models, we perform uncertainty propagation of neutral densities by Monte Carlo sampling and assess their sensitivity to two turbulent diffusion profiles, corresponding to the extreme profiles at high altitudes described in the literature. A strong sensitivity of the ion density uncertainties to transport is observed, generally more important than to ion-molecule reaction parameters themselves. This highlights the necessity to constrain eddy diffusion profiles for Titan ionosphere, which should progressively be done thanks to the present and future measurements of the orbiter Cassini.
dc.language.isoen
dc.publisherElsevier
dc.subject.enAtmosphere chemistry
dc.subject.enAtmosphere composition
dc.subject.enAtmosphere dynamics
dc.subject.enIonospheres
dc.subject.enTitan.
dc.subject.enTitan
dc.title.enInfluence of neutral transport on ion chemistry uncertainties in Titan ionosphere
dc.typeArticle de revue
dc.identifier.doi10.1016/j.icarus.2007.08.016
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalIcarus
bordeaux.page519-526
bordeaux.volume192
bordeaux.peerReviewedoui
hal.identifierhal-00177563
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00177563v1
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