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Optical and physical properties of stratospheric aerosols from balloon measurements in the visible and near-infrared domains. III. Presence of aerosols in the middle stratosphere

dc.contributor.authorRenard, J.-B.
dc.contributor.authorOvarlez, J.
dc.contributor.authorBerthet, G.
dc.contributor.authorFussen, D.
dc.contributor.authorVanhellemont, F.
dc.contributor.authorBrogniez, C.
dc.contributor.authorHadamcik, E.
dc.contributor.authorChartier, M.
dc.contributor.authorOvarlez, H.
dc.date2005
dc.date.accessioned2016-12-07T10:36:05Z
dc.date.available2016-12-07T10:36:05Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4606
dc.descriptionThe aerosol extinction measurements in the ultraviolet and visible wavelengths by the balloonborne spectrometer Spectroscopie d'Absorption Lunaire pour l'Observation des Minoritaires Ozone et NO<inf>x</inf> (SALOMON) show that aerosols are present in the middle stratosphere, above 25-km altitude. These observations are confirmed by the extinction measurements performed by a solar occultation radiometer. The balloonborne Laboratoire de Mété orologie Dynamique (LMD) counter instrument also confirms the presence of aerosol around 30-km altitude, with an unrealistic excess of micronic particles assuming that only liquid sulfate aerosols are present. An unexpected spectral structure around 640-nm observed by SALOMON is also detectable in extinction measurements by the satellite instrument Stratospheric Aerosols and Gas Experiment III. This set of measurements could indicate that solid aerosols were detected at these altitude ranges. The amount of soot detected up to now in the lower stratosphere is too low to explain these measurements. Thus, the presence of interplanetary dust grams and micrometeorites may need to be invoked. Moreover, it seems that these grains fill the stratosphere in stratified layers.
dc.languageeng
dc.titleOptical and physical properties of stratospheric aerosols from balloon measurements in the visible and near-infrared domains. III. Presence of aerosols in the middle stratosphere
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeBalloons
dc.subject.freeLight absorption
dc.subject.freeRadiation effects
dc.subject.freeRadiometers
dc.subject.freeSatellite communication systems
dc.subject.freeSoot
dc.subject.freeUpper atmosphere
dc.subject.freeBalloon measurements
dc.subject.freeDust grains
dc.subject.freeNear-infrared domains
dc.subject.freeStratospheric aerosols
dc.subject.freeAerosols
dc.source.titleApplied Optics
dc.source.volume44
dc.source.issue19
dc.source.page4086-4095
Orfeo.peerreviewedYes
dc.identifier.doi10.1364/AO.44.004086
dc.identifier.scopus2-s2.0-22144453215


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