Measurements and calculations of H2O broadened by CO2 collisional parameters for planetary atmospheres
| dc.contributor.author | Ducreux, E. | |
| dc.contributor.author | Vispoel, B. | |
| dc.contributor.author | Grouiez, B. | |
| dc.contributor.author | Gamache, R.R. | |
| dc.contributor.author | Lepère, M. | |
| dc.contributor.author | Robert, S. | |
| dc.contributor.author | Régalia, L. | |
| dc.date | 2025 | |
| dc.date.accessioned | 2025-08-14T07:30:50Z | |
| dc.date.available | 2025-08-14T07:30:50Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/14136 | |
| dc.description | Collisional parameters of H2O with CO2 are currently missing from international spectroscopic databases, although they are essential for accurate modeling of water vapor in CO2-rich planetary atmospheres. In this study, high-resolution infrared spectra of H2O broadened by CO2 were recorded using a Fourier Transform Spectrometer in the 1.18 and 2.34 µm spectral regions. CO2-collisional parameters for selected H2O transitions were derived through a multispectrum fitting procedure employing both Voigt and quadratic speed-dependent Voigt profiles. Furthermore, calculations based on the semi-classical Complex Robert-Bonamy-Ma formalism were performed to estimate CO2-broadened half-widths, line shifts, and their temperature dependencies across various atmospheric transparency windows. It results in a strong agreement between theoretical predictions and experimental data. Finally, the shared calculated linelist, obtained for a wide range of transitions, can be directly applied to radiative transfer modeling of atmospheres primarily composed of carbon dioxide. | |
| dc.language | eng | |
| dc.title | Measurements and calculations of H2O broadened by CO2 collisional parameters for planetary atmospheres | |
| dc.type | Article | |
| dc.subject.frascati | Physical sciences | |
| dc.audience | Scientific | |
| dc.subject.free | High resolution infrared spectroscopy | |
| dc.subject.free | Complex Robert-Bonamy-Ma calculations | |
| dc.subject.free | Line shape parameters | |
| dc.subject.free | Water vapor | |
| dc.subject.free | Carbon dioxide | |
| dc.subject.free | Planetary atmospheres | |
| dc.source.title | Journal of Quantitative Spectroscopy and Radiative Transfer | |
| dc.source.volume | 345 | |
| dc.source.page | A109576 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.1016/j.jqsrt.2025.109576 | |
| dc.identifier.url |