Measurements of H2O broadened by CO2 line-shape parameters: Beyond the Voigt profile
| dc.contributor.author | Ducreux, É. | |
| dc.contributor.author | Grouiez, B. | |
| dc.contributor.author | Robert, S. | |
| dc.contributor.author | Lepère, M. | |
| dc.contributor.author | Vispoel, B. | |
| dc.contributor.author | Gamache, R.R. | |
| dc.contributor.author | Régalia, L. | |
| dc.date | 2024 | |
| dc.date.accessioned | 2024-05-13T06:36:30Z | |
| dc.date.available | 2024-05-13T06:36:30Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/13254 | |
| dc.description | H2O is an important molecule in the quest to better understand the evolution of solar system. In the study of Venus and Mars CO2-rich atmospheres (around 96 % of their composition) and because of the space instruments constant improvements, the planetary community needs spectroscopic data as accurate as possible. Continuing from our previous study [JQSRT 231, 126(2019)], new spectra of H2O perturbed by CO2 were measured with our new experimental set-up in the 2.7 µm region to compare with the previous results. After the improvement in the determination of the partial pressure of water vapor, the line parameters were then determined with a multispectrum fitting procedure using a Voigt profile in the same way as in [JQSRT 231, 126(2019)]. This led to characteristic W-shape residuals that have been improved using beyond-Voigt profiles. Our investigation showed that considering the speed dependence of collisional line parameters is essential to obtain better line-shape parameters in the considered experimental conditions. | |
| dc.language | eng | |
| dc.title | Measurements of H2O broadened by CO2 line-shape parameters: Beyond the Voigt profile | |
| dc.type | Article | |
| dc.subject.frascati | Physical sciences | |
| dc.audience | Scientific | |
| dc.subject.free | High resolution infrared spectroscopy | |
| dc.subject.free | Line shape parameters | |
| dc.subject.free | Water vapor | |
| dc.subject.free | Carbon dioxide | |
| dc.subject.free | Line profiles | |
| dc.subject.free | Planetary | |
| dc.subject.free | atmospheres | |
| dc.source.title | Journal of Quantitative Spectroscopy and Radiative Transfer | |
| dc.source.volume | 323 | |
| dc.source.page | A109026 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.1016/j.jqsrt.2024.109026 | |
| dc.identifier.url |