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Null Variance Altitudes for the photolysis rate constants of species with barometric distribution: Illustration on Titan upper atmosphere modeling

hal.structure.identifierPLANETO - LATMOS
dc.contributor.authorPENG, Zhe
hal.structure.identifierEcole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL [ENSCP]
dc.contributor.authorCAILLIEZ, Fabien
hal.structure.identifierSSE 2012
dc.contributor.authorDOBRIJEVIC, M.
hal.structure.identifierLaboratoire de Chimie Physique D'Orsay [LCPO]
dc.contributor.authorPERNOT, Pascal
dc.date.issued2012-04
dc.identifier.issn0019-1035
dc.description.abstractEnThe precision of the rates of the photolysis processes initiating the complex chemistry of Titan's upper atmosphere conditions strongly the predictivity of photochemical models. Recent studies in sensitivity analysis of such models point out photolysis rate constants as key parameters. However, they have been treated approximately so far. We deal here directly with uncertainty in the absorption cross-sections to derive the uncertain altitude-dependent photolysis rate constants. We observe that the uncertainty on the photolysis rate constants of the major species, N2 and CH4, varies strongly with altitude and rather surprisingly vanishes at specific altitudes. We propose a simple model to interpret these features and we demonstrate that they are transferable to any major absorber distributed barometrically in an atmosphere.
dc.language.isoen
dc.publisherElsevier
dc.title.enNull Variance Altitudes for the photolysis rate constants of species with barometric distribution: Illustration on Titan upper atmosphere modeling
dc.typeArticle de revue
dc.identifier.doi10.1016/J.ICARUS.2012.02.006
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.journalIcarus
bordeaux.page950-955
bordeaux.volume218
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00685417
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00685417v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Icarus&rft.date=2012-04&rft.volume=218&rft.issue=2&rft.spage=950-955&rft.epage=950-955&rft.eissn=0019-1035&rft.issn=0019-1035&rft.au=PENG,%20Zhe&CAILLIEZ,%20Fabien&DOBRIJEVIC,%20M.&PERNOT,%20Pascal&rft.genre=article


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