Reference : SELF BROADENING COEFFICIENTS AND IMPROVED LINE INTENSITIES FOR THE v7 BAND OF C2H4 NE...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/172155
SELF BROADENING COEFFICIENTS AND IMPROVED LINE INTENSITIES FOR THE v7 BAND OF C2H4 NEAR 10.5 µm, AND IMPACT ON ETHYLENE RETRIEVALS FROM JUNGFRAUJOCH SOLAR SPECTRA
English
Vander Auwera, Jean [Université Libre de Bruxelles - ULB > > Service de Chimie Quantique et Photophysique > >]
Fayt, André [Université Catholique de Louvain - UCL > > Laboratoire de Spectroscopie Moléculaire > >]
Tudorie, Marcella [Université Libre de Bruxelles - ULB > > Service de Chimie Quantique et Photophysique > >]
Rotger, Maud [CNRS-Université de Reims Champagne-Ardenne > > Groupe de Spectrométrie Moléculaire et Atmosphérique > >]
Boudon, Vincent [CNRS-Université de Bourgogne > > Laboratoire Interdisciplinaire Carnot de Bourgogne > >]
Franco, Bruno mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Mahieu, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Sep-2014
Yes
International
The 23rd International Conference on High Resolution Molecular Spectroscopy
September 2-6, 2014
Bologna
Italy
[en] Ethylene ; High-resolution infrared absorption spectroscopy ; Atmospheric retrievals
[en] Relying on high-resolution Fourier transform infrared (FTIR) spectra, the present work
involved extensive measurements of individual line intensities and self-broadening
coefficients for the ν7 band of 12C2H4. The measured self-broadening coefficients exhibit
a dependence on both J and Ka. Compared to the corresponding information available in
the latest edition of the HITRAN spectroscopic database, the measured line intensities
were found to be higher by about 10 % for high J lines in the P branch and lower by about
5 % for high J lines of the R branch, varying between these two limits roughly linearly with
the line positions. The impact of the presently measured line intensities on retrievals of
atmospheric ethylene in the 949.0–952.0cm 1 microwindow was evaluated using a
subset of ground-based high-resolution FTIR solar spectra recorded at the Jungfraujoch
station. The use of HITRAN 2012 with line intensities modified to match the present
measurements led to a systematic reduction of the measured total columns of ethylene by
-4.1 +/- 0.1 %.
Researchers
http://hdl.handle.net/2268/172155

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