Revised Molecular Line Parameters of Ammonia
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Engineering topics
Publications and source records attributed to Tarrago, G..
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Ammonia is the fourth most abundant constituent in the atmosphere of Jupiter, after hydrogen, helium and methane.
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Line positions and line intensities of the v1, v3 and 2V4 bands of 14NH3 were analyzed using line positions from 0.0054 cm-1 apodized resolution FT spectra recorded at Orsay and using line intensities from 0.011 cm-1 unapodized resolution FT spectra recorded at Kitt peak National Observatory. The theoretical model and the set of programs developed for treating the infrared system v1/v3/2v4 of ammonia are briefly discussed.
Methyl chloride (CH3Cl) is relatively abundant in the Earth's atmosphere, and because it is easily photodissociated is an important source of the chlorine atoms which are involved in the destruction of atmospheric ozone.
Ammonia is the fourth most abundant constituent in the atmospheres of Jupiter and Saturn, after hydrogen, helium and methane. This relative abundance is attested by the presence in the infrared planetary spectra of many absorption features observed in the range of fundamental bands and also in the higher bands. Reported are experimental line positions and intensities of selected ammonia bands.
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Numerous changes made for the 1991 and 1992 versions of the HITRAN database in the 0-6185/cm region for molecular line parameters of methane are described. An assessment of deficiencies in the parameters is presented.
Recent unpublished laboratory work on rovibrational line strengths and broadening coefficients which is of interest in the study of planetary atmospheres was reviewed. The molecules discussed are PH3, CH3D and CO2.