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
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Authors
Renard, J.-B.
Ovarlez, J.
Berthet, G.
Fussen, D.
Vanhellemont, F.
Brogniez, C.
Hadamcik, E.
Chartier, M.
Ovarlez, H.
Discipline
Earth and related Environmental sciences
Subject
Balloons
Light absorption
Radiation effects
Radiometers
Satellite communication systems
Soot
Upper atmosphere
Balloon measurements
Dust grains
Near-infrared domains
Stratospheric aerosols
Aerosols
Audience
Scientific
Date
2005Metadata
Show full item recordDescription
The aerosol extinction measurements in the ultraviolet and visible wavelengths by the balloonborne spectrometer Spectroscopie d'Absorption Lunaire pour l'Observation des Minoritaires Ozone et NOx (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.
Citation
Renard, J.-B.; Ovarlez, J.; Berthet, G.; Fussen, D.; Vanhellemont, F.; Brogniez, C.; Hadamcik, E.; Chartier, M.; Ovarlez, H. (2005). 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. , Applied Optics, Vol. 44, Issue 19, 4086-4095, DOI: 10.1364/AO.44.004086.Identifiers
scopus: 2-s2.0-22144453215
Type
Article
Peer-Review
Yes
Language
eng