The latest edition of the AFGL atmospheric absorption line parameters compilation for the seven most active infrared terrestrial absorbers is described. Major modifications to the atlas for this edition include updating of water-vapor parameters from 0 to 4300 per cm, improvements to line positions for carbon dioxide, substantial modifications to the ozone bands in the middle to far infrared, and improvements to the 7- and 2.3-micron bands of methane. The atlas now contains about 181,000 rotation and vibration-rotation transitions between 0 and 17,900 per cm. The sources of the absorption parameters are summarized.

AFGL atmospheric absorption line parameters compilation: 1982 edition.

Coriolis interaction and anharmonic potential function of ozone from the microwave spectra in the excited vibrational states

Infrared spectra of 16O3 and 18O3: Darling and Dennison resonance and anharmonic potential function of ozone

During its first mission in 1985 onboard Spacelab 3, the ATMOS (atmospheric trace molecule spectroscopy) instrument, a high speed Fourier transform spectrometer, produced a large number of high resolution infrared solar absorption spectra recorded in the occultation mode. The analysis and interpretation of these data in terms of composition, chemistry, and dynamics of the earth's upper atmosphere required good knowledge of the molecular line parameters for those species giving rise to the absorptions in the atmospheric spectra. This paper describes the spectroscopic line parameter database compiled for the ATMOS experiment and referenced in other papers describing ATMOS results. With over 400,000 entries, the linelist catalogs parameters of 46 minor and trace species in the 1-10,000/cm region.

Molecular line parameters for the atmospheric trace molecule spectroscopy experiment

Potential energy surfaces of ozone in its ground state and in the lowest-lying eight excited states

The infrared spectrum of ozone

The (ν1 + ν3) combination band of ozone

: Fourteen bands of ozone between 500 and 3300 per cm have been identified and values of the vibrational anharmonic constants determined. The integrated band absorptances of many of these bands have been measured from spectra of a 32 m path of ozone-oxygen mixtures containing up to 30 atm cm O3 near 25C. The dependences of the band absorptances on O3 concentration and total pressure are described and the strengths of nine of the bands are given. It is shown that the statistical band model describes the behavior of the bands reasonably well for the ranges of experimental variables used. (Author)

The infrared absorption bands of ozone

Radiation chopping techniques have been employed to study infrared fluorescence of pure carbon monoxide in the region of its fundamental. The present study has served to confirm earlier results obtained by R. C. Millikan using quite different techniques. In addition, CO fluorescence emission V=1 → 0 was observed from samples irradiated in such a manner as to produce only V=0 → 2 initial absorption. The results can be interpreted in terms of resonant collisions, with the selection rule ΔV=±1, as follows: CO(V=2)+CO(V=0)→CO(V=1)+CO(V=1),with fluorescence emission from the molecules in the V=1 state.

David J. McCaa

Papers

The infrared spectrum of ozone

The (ν1 + ν3) combination band of ozone

The infrared absorption bands of ozone

Infrared Fluorescence of Carbon Monoxide