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Global measurement of the mesospheric sodium layer by the star occultation instrument GOMOS

dc.contributor.authorFussen, D.
dc.contributor.authorVanhellemont, F.
dc.contributor.authorBingen, C.
dc.contributor.authorKyrölä, E.
dc.contributor.authorTamminen, J.
dc.contributor.authorSofieva, V.
dc.contributor.authorHassinen, S.
dc.contributor.authorSeppälä, A.
dc.contributor.authorVerronen, P.
dc.contributor.authorBertaux, J.-L.
dc.contributor.authorHauchecorne, A.
dc.contributor.authorDalaudier, F.
dc.contributor.authorRenard, J.-B.
dc.contributor.authorFraisse, R.
dc.contributor.authorFanton d'Andon, O.
dc.contributor.authorBarrot, G.
dc.contributor.authorMangin, A.
dc.contributor.authorThéodore, B.
dc.contributor.authorGuirlet, M.
dc.contributor.authorKoopman, R.
dc.contributor.authorSnoeij, P.
dc.contributor.authorSaavedra, L.
dc.date2004
dc.date.accessioned2017-04-20T12:52:30Z
dc.date.available2017-04-20T12:52:30Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5072
dc.descriptionWe present the first global measurement of the sodium mesospheric layer obtained from the processing of about 100 000 star occultations by the GOMOS instrument onboard the ENVISAT satellite. The retrieval method is developed on the basis of a simple DOAS retrieval applied to averaged transmittances. The vertical inversion of the sodium slant path optical thickness is performed by using a modified Gaussian extinction profile. A global climatology is derived by using monthly bins of 20 degrees in latitude. The high variability of the sodium layer is confirmed on a global scale as well as the presence of an important modulation in the annual cycle. Also, we present some evidence for the existence of a diurnal cycle characterized by an increase of the sodium concentration in daylight.
dc.languageeng
dc.titleGlobal measurement of the mesospheric sodium layer by the star occultation instrument GOMOS
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeClimatology
dc.subject.freeDaylighting
dc.subject.freeOpacity
dc.subject.freeSatellites
dc.subject.freeSodium
dc.subject.freeTransmitters
dc.subject.freeENVISAT satellites
dc.subject.freeGOMOS instruments
dc.subject.freeMesospheric sodium layer
dc.subject.freeStar occultations
dc.subject.freeEarth atmosphere
dc.subject.freeatmospheric chemistry
dc.subject.freemesosphere
dc.subject.freeremote sensing
dc.subject.freesodium
dc.source.titleGeophysical Research Letters
dc.source.volume31
dc.source.issue24
dc.source.pageL24110
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2004GL021618
dc.identifier.scopus2-s2.0-20044383908


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