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dc.contributor.authorDe Mazière, M.
dc.contributor.authorVan Roozendael, M.
dc.contributor.authorHermans, C.
dc.contributor.authorSimon, P.G.
dc.contributor.authorDemoulin, P.
dc.contributor.authorRoland, G.
dc.contributor.authorZander, R.
dc.date1998
dc.date.accessioned2017-05-19T11:04:37Z
dc.date.available2017-05-19T11:04:37Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5409
dc.descriptionThe colocation of two technically different instruments for ground-based remote sensing of NO2 total column amounts at the primary Network for the Detection of Stratospheric Change Alpine station of the Jungfraujoch (46.5°N, 8.0°E) has been exploited for mutual validation of the long-term NO2 time series from both instruments and for a quantitative evaluation of the impact of the Mount Pinatubo eruption on the NO2 abundance above this northern midlatitude observatory. The two techniques are high-resolution Fourier transform infrared solar absorption spectrometry and zenith-sky differential optical absorption spectroscopy in the UV visible. The diurnal variation of NO2 has been simulated by a simple photochemical model that allows a comparison between the data from the two techniques. This model is shown to reproduce the observed morning to evening ratios to 2.3%, on average, which is fully adequate for the needs of this study. From the 1985-1996 combined time series of NO2 morning and evening abundances, it has been concluded that the enhanced aerosol load injected into the stratosphere by Mount Pinatubo caused a maximum NO2 reduction above the Jungfraujoch by 45% in early January 1992 that died out quasi-exponentially to zero by the beginning of 1995.
dc.languageeng
dc.titleQuantitative evaluation of the post-Mount Pinatubo NO2 reduction and recovery, based on 10 years of Fourier transform infrared and UV-visible spectroscopic measurements at Jungfraujoch
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeatmospheric chemistry
dc.subject.freeMount Pinatubo
dc.subject.freenitrogen dioxide
dc.subject.freeremote sensing
dc.subject.freeAlps
dc.subject.freeJungfraujoch
dc.subject.freeSwitzerland
dc.source.titleJournal of Geophysical Research D: Atmospheres
dc.source.volume103
dc.source.issue3339
dc.source.page10849-10858
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/97JD03362
dc.identifier.scopus2-s2.0-0039467676


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