Assignment and rotational analysis of new absorption bands of carbon dioxide isotopologues in Venus spectra
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Authors
Robert, S.
Borkov, Y.G.
Vander Auwera, J.
Drummond, R.
Mahieux, A.
Wilquet, V.
Vandaele, A.C.
Perevalov, V.I.
Tashkun, S.A.
Bertaux, J.L.
Discipline
Earth and related Environmental sciences
Subject
Acousto-optical tunable filter
Carbon dioxide isotopologues
Chemical inventory
Cloud layers
Echelle spectrometers
HITRAN database
Infrared range
Isotopologues
Line positions
Order selection
Rotational analysis
Solar occultation
Solar occultation measurements
Spectroscopic constants
Venus atmospheres
Venus Express
Vertical distributions
Wavelength ranges
Carbon dioxide
Infrared radiation
Infrared spectrometers
Spectrometers
Interplanetary flight
carbon dioxide
cloud
infrared radiation
planetary atmosphere
radiative transfer
spectral resolution
Venus
Audience
Scientific
Date
2013Metadata
Show full item recordDescription
We present absorption bands of carbon dioxide isotopologues, detected by the Solar Occultation for the Infrared Range (SOIR) instrument on board the Venus Express Satellite. The SOIR instrument combines an echelle spectrometer and an Acousto-Optical Tunable Filter (AOTF) for order selection. It performs solar occultation measurements in the Venus atmosphere in the IR region (2.2–4.3 μm), at a resolution of 0.12–0.18 cm−1. The wavelength range probed by SOIR allows a detailed chemical inventory of the Venus atmosphere above the cloud layer (65–150 km) to be made with emphasis on the vertical distributions of gases. Thanks to the SOIR spectral resolution, a new CO2 absorption band was identified: the 21101–01101 band of 16O12C18O with R branch up to J=31. Two other previously reported bands were observed dispelling any doubts about their identifications: the 20001–00001 band of 16O13C18O [Villanueva G, et al. J Quant Spectrosc Radiat Transfer 2008;109:883–894] and the 01111–00001 band of 16O12C18O [Villanueva G, et al. J Quant Spectrosc Radiat Transfer 2008;109:883–894 and Wilquet V, et al. J Quant Spectrosc Radiat Transfer 2008;109:895–905]. These bands were analyzed, and spectroscopic constants characterizing them were obtained. The rotational assignment of the 20001–00001 band was corrected. The present measurements are compared with data available in the HITRAN database.
Citation
Robert, S.; Borkov, Y.G.; Vander Auwera, J.; Drummond, R.; Mahieux, A.; Wilquet, V.; Vandaele, A.C.; Perevalov, V.I.; Tashkun, S.A.; Bertaux, J.L. (2013). Assignment and rotational analysis of new absorption bands of carbon dioxide isotopologues in Venus spectra. , Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 114, 29-41, DOI: 10.1016/j.jqsrt.2012.08.023.Identifiers
scopus: 2-s2.0-84869230917
Type
Article
Peer-Review
Yes
Language
eng