Ab initio predictions and laboratory validation for consistent ozone intensities in the MW, 10 and 5 μm ranges

International audienceReliable ozone spectral data consistent over several spectral ranges are a challenge for both experiment and theory. We present ab initio calculations for strong lines that lead to consistent results from the microwave to mid-infrared regions. The results agree well with established microwave line lists and our new measurements in the fundamental and first overtone regions of ozone at 5 and 10 μm. The calculations and their agreement to within 1% with measurements provide an important step toward consistent and accurate spectroscopic ozone data. The results imply that actual databases need to be corrected by about 3% in the corresponding mid-infrared spectral intervals. Appropriate recommendations for the consistency of strong line intensities of the ozone molecule in microwave, 10 and 5 μm ranges, in HITRAN (HIgh-resolution TRANsmittance and molecular apbsorption) and GEISA (Gestion et Etude des Informations Spectroscopiques Atmosphériques) databases are suggested.I. INTRODUCTIO

Fourier transform measurements of water vapor line parameters in the 4200-6600 cm-1 region

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SELF-BROADENING COEFFICIENTS FROM FTIR MEASUREMENTS OF H2OH_{2}O

$^{a}$ J.-Y. Mandin, C. Camy-Peyret, and J.-M. Flaud, J. Quant. Spectrosco. Radiat. Transfer 26(6), 483-494 (1981)Author Institution: Department of Physics, The Ohio State University; GSMA U.A. CNRS D 1434, Facult\'{e} des Sciences, The Ohio State University; Physikalisch-Chemisches Institut, Justus-Liebig-Universit\""{a}t GiessenSelf-broadening parameters have been extracted for selected transitions in the $\nu_{1}, 2\nu_{2}$ and $\nu_{3}$ bands of water vapor observed between $2500-4200 cm^{-1}$. The $H_{2}O$ spectrum at room temperature in natural isotopic abundance has been recorded in this region at pressure-broadening-limited resolution with a Bruker FTS 120HR and a White-type cell adjusted to provide pathlengths of 64.5-288.5m. Sample pressures used were 0.007-29.7mbar (0.005-22.3 Torr). Broadening coefficients determined for transitions in the $\nu_{2}$ band of water vapor in this study and earlier $works^{a}$ are comparable. The results of the broadening determinations are presented and discussed

Ozone spectroscopy in the electronic ground state: High-resolution spectra analyses and update of line parameters since 2003

International audienceThe state of the art analyses of high-resolution ozone spectra and a critical discussion of line parameters updated since the previous review by Rinsland et al. [J Quant Spectrosc Radiat Transfer 2003;82:207-18] are presented. We focus on recent works revisiting improved measurements and analyses of Fourier transform spectra below 5600 cm-1 and review Cavity Ring-Down Spectroscopy measurements and analyses in the 5850-7920 cm-1 spectral region which have been performed for 16O3 and all 18O enriched ozone isotopologues. Various issues related to resonance perturbations due to dark states are discussed as well as the issues concerning the accuracy of the experimental parameters, the data modelling and the data reduction. Comparisons of vibration levels determined from spectra analyses with predictions from the molecular potential functions are given. The procedures of empirical corrections for calculated line lists are described and the "intricate" question of absolute intensity determination is overviewed. Also, a review of deficiencies, challenge for improvements, and related works in progress are reported

The 1997 spectroscopic GEISA databank

The current version GEISA-97 of the computer-accessible database system GEISA (Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management and Study of Atmospheric Spectroscopic Information) is described. This catalogue contains 1,346,266 entries. These are spectroscopic parameters required to describe adequately the individual spectral lines belonging to 42 molecules (96 isotopic species) and located between 0 and 22,656 cm-1. The featured molecules are of interest in studies of the terrestrial as well as the other planetary atmospheres, especially those of the Giant Planets. GEISA-97 contains also a catalog of absorption cross-sections of molecules such as chlorofluorocarbons which exhibit unresolvable spectra. The modifications and improvements made to the earlier edition (GEISA-92) and the data management software are described. GEISA-97 and the associated management software are accessible from the ARA/LMD (Laboratoire de Météorologie Dynamique du CNRS, France) web site: http://ara01.polytechnique.fr/registration. © 1999 Elsevier Science Ltd. All rights reserved.SCOPUS: ar.jinfo:eu-repo/semantics/publishe