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dc.contributor.authorBosse, Léo
dc.contributor.authorLilensten, Jean
dc.contributor.authorGillet, Nicolas
dc.contributor.authorBrogniez, Colette
dc.contributor.authorPujol, Olivier
dc.contributor.authorRochat, Sylvain
dc.contributor.authorDelboulbé, Alain
dc.contributor.authorCuraba, Stephane
dc.contributor.authorJohnsen, Magnar Gullikstad
dc.date.accessioned2022-05-05T12:15:00Z
dc.date.available2022-05-05T12:15:00Z
dc.date.issued2022-04-01
dc.description.abstractA polarised radiative transfer model (POMEROL) has been developed to compute the polarisation measured by a virtual instrument in a given nocturnal environment. This single-scattering model recreates real-world conditions (among them atmospheric and aerosol profiles, light sources with complex geometries at the ground and in the sky, terrain obstructions). It has been successfully tested at mid-latitudes where sky emissions are of weak intensity. We show a series of comparisons between POMEROL predictions and polarisation measurements during two field campaigns in the auroral zone, in both quiet and active conditions. These comparisons show the strength of the model to assess the aerosol characteristics in the lower atmosphere by using a mesospheric line. They also show that three main upper atmosphere emissions must be polarised: the green atomic oxygen line at 557.7 nm and the 1st N2+ negative band at 391.4 nm (purple) and 427.8 nm (blue). This polarisation can be either created directly at the radiative de-excitation or may occur when the non-polarised emission crosses the ionospheric currents. We provide some of the potentialities it offers in the frame of space weather. These require refinements of the preliminary modeling approach considered in the present study.en_US
dc.identifier.citationBosse L, Lilensten J, Gillet N, Brogniez C, Pujol, Rochat S, Delboulbé A, Curaba S, Johnsen MG. At the source of the polarisation of auroral emissions: experiments and modeling. Journal of Space Weather and Space Climate. 2022;12(7)en_US
dc.identifier.cristinIDFRIDAID 2021451
dc.identifier.doihttps://doi.org/10.1051/swsc/2022004
dc.identifier.issn2115-7251
dc.identifier.urihttps://hdl.handle.net/10037/25023
dc.language.isoengen_US
dc.publisherEDP Openen_US
dc.relation.journalJournal of Space Weather and Space Climate
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.titleAt the source of the polarisation of auroral emissions: experiments and modelingen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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