Reference : SECULAR TREND AND SEASONAL VARIABILITY OF THE COLUMN ABUNDANCE OF N2O ABOVE THE JUNGFRAU...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/14909
SECULAR TREND AND SEASONAL VARIABILITY OF THE COLUMN ABUNDANCE OF N2O ABOVE THE JUNGFRAUJOCH STATION DETERMINED FROM IR SOLAR SPECTRA
English
Zander, Rodolphe mailto [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
EHHALT, D. H. [> > > >]
RINSLAND, Curtis P. [> > > >]
SCHMIDT, U. [> > > >]
Mahieu, Emmanuel mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
RUDOLPH, J. [> > > >]
Demoulin, Philippe mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Roland, Ginette [> >]
Delbouille, Luc [> >]
Sauval, A. J. [> >]
20-Aug-1994
Journal of Geophysical Research
American Geophysical Union
99
D8
16745-16756
Yes (verified by ORBi)
International
0148-0227
Washington
DC
[en] nitrous oxide ; FTIR spectrometer ; remote sensing ; greenhouse gas ; atmospheric composition
[en] Infrared solar spectra recorded at the International Scientific Station of the Jungfraujoch (3580 m altitude), Switzerland, in 1950-1951 and from 1984 to 1992 have been analyzed to determine vertical column abundances of nitrous oxide (N2O) above the station. The best fit to the relatively dense set of measurements made between 1984 and 1992 indicates a mean exponential rate of increase equal to 0.36 +/- 0.06% yr-1 (1 sigma) and a seasonal modulation of 7.2% peak to peak, the minimum occurring at the end of the winter and the maximum in early September. The column abundances for April of the years 1951, 1984, and 1992 were found equal to 3.49 x 10(18), 3.76 x 10(18), and 3.87 x 10(18) molecules cm-2, respectively; they translate into N2O concentrations at the altitude of the Jungfraujoch equal to 275, 296, and 305 parts per billion by volume. These results indicate that the exponential rate of increase for 1951-1984 was equal to 0.23 +/- 0.04% yr-1 (1 sigma), thus substantially lower than for the 1984-1992 time interval and that the so-called preindustrial levels of N2O pertained until 1951 with most of the increase in atmospheric N2O occurring thereafter.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/14909
http://www.agu.org/pubs/crossref/1994/94JD01030.shtml

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
1994JD01030.pdfPublisher postprint1.08 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.