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Ground-based visible measurements at the Jungfraujoch station since 1990

dc.contributor.authorVan Roozendael, M.
dc.contributor.authorDe Mazière, M.
dc.contributor.authorSimon, P.C.
dc.date1994
dc.date.accessioned2017-06-01T11:16:15Z
dc.date.available2017-06-01T11:16:15Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5612
dc.descriptionGround-based observations of nitrogen dioxide and ozone total columns have been performed since June 1990 at the International Scientific Station at the Jungfraujoch (45°N, 8°E). Measurements are made twice a day, at sunrise and sunset, by looking at the sunlight scattered at zenith in the visible range. NO2 and O3 vertical abundances are deduced by the differential absorption method. The error sources of the method are discussed in detail. For most observation conditions, the precision of measurement is estimated at about 11% for NO2 and 6% for O3. However larger errors might be encountered occasionally due to tropospheric pollution or enchanced multiple scattering in thick clouds. It is shown that the signature of such events can be detected in the evolution of the retrieved vertical column during the twilight period. A systematic method to detect and reject data significantly biased is described and applied to the NO2 time-series of measurements.
dc.languageeng
dc.titleGround-based visible measurements at the Jungfraujoch station since 1990
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeAtmospheric turbulence
dc.subject.freeClouds
dc.subject.freeErrors
dc.subject.freeFog
dc.subject.freeLight scattering
dc.subject.freeNitrogen compounds
dc.subject.freeOzone
dc.subject.freeSnow
dc.subject.freeSpectrometers
dc.subject.freeTroposphere
dc.subject.freeDifferential absorption method
dc.subject.freeGround based visible measurements
dc.subject.freeSunlight
dc.subject.freeOptical variables measurement
dc.source.titleJournal of Quantitative Spectroscopy and Radiative Transfer
dc.source.volume52
dc.source.issue3-4
dc.source.page231-240
Orfeo.peerreviewedYes
dc.identifier.doi10.1016/0022-4073(94)90153-8
dc.identifier.scopus2-s2.0-0028515308


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