Infrared absolute intensities of ozone in the 10 and 5μm spectral range: New investigations
| Autor: | M.-T. Bourgeois, M.-R. De Backer-Barilly, Alain Barbe, X. Thomas, P. Von Der Heyden |
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| Rok vydání: | 2010 |
| Předmět: |
Radiation
Ozone Materials science Infrared business.industry Analytical chemistry Infrared spectroscopy Atomic and Molecular Physics and Optics Spectral line law.invention chemistry.chemical_compound Pressure measurement Optics chemistry law Range (statistics) Calibration HITRAN business Spectroscopy |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 111:1080-1088 |
| ISSN: | 0022-4073 |
| Popis: | Infrared high resolution spectra of ozone 16O3 have been recorded in the 10 and 5 μm spectral ranges in order to derive their absolute intensities with a best achievable accuracy. Spectra have been recorded with the home made stepping mode FTS of GSMA (Reims). In the two spectral regions, we use UV–IR crossed beam cell. The quantification of ozone is achieved using UV cross section at 253.65 nm. A check of this UV calibration is also performed using direct pressure measurements of quasi-pure samples of O3. The intensities are derived from infrared spectra using multifit procedure already tested. In the 10 μm range, where 12 different spectra have been recorded, 65 well selected lines led to a good agreement (better than 0.3%) with the HITRAN 2008 (or 2004) values, confirming our previous work [De Backer-Barilly MR, Barbe A. Absolute intensities of the 10 μm bands of 16O3. J Mol Spectrosc 305:2001;43–53]. In the 5 μm range, where 18 transitions are selected, we also note a correct agreement with HITRAN 2008, despite a slightly larger averaged value between (1.9%) experimental and theoretical (HITRAN). As conclusion, authors suggest the use of current HITRAN 2008 data for atmospheric retrievals. |
| Databáze: | OpenAIRE |
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