Article (Scientific journals)
Quantitative 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
De Mazière, Martine; Van Roozendael, Michel; Hermans, Christian et al.
1998In Journal of Geophysical Research, 103 (D9), p. 10849-10858
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Keywords :
NO2; Mount Pinatubo eruption; atmospheric composition; Jungfraujoch; FTIR; SAOZ
Abstract :
[en] The 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 mid-latitude 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.
Disciplines :
Earth sciences & physical geography
Author, co-author :
De Mazière, Martine;  Belgian Institute for Space Aeronomy, Brussels, Belgium
Van Roozendael, Michel;  Belgian Institute for Space Aeronomy, Brussels, Belgium
Hermans, Christian;  Belgian Institute for Space Aeronomy, Brussels, Belgium
Simon, Paul C.;  Belgian Institute for Space Aeronomy, Brussels, Belgium
Demoulin, Philippe ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Roland, Ginette;  Université de Liège - ULiège > Institut d'Astrophysique et de Géophysique
Zander, Rodolphe ;  Université de Liège - ULiège > Institut d'Astrophysique et de Géophysique
Language :
English
Title :
Quantitative 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
Publication date :
20 May 1998
Journal title :
Journal of Geophysical Research
ISSN :
0148-0227
eISSN :
2156-2202
Publisher :
American Geophysical Union (AGU), Washington, United States - District of Columbia
Volume :
103
Issue :
D9
Pages :
10849-10858
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 January 2014

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