Theoretical estimation of SO2 line broadening coefficients induced by carbon dioxide in the 150–300 K temperature range

H2, He, and CO2 Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO2, N2O, CO, SO2, OH, OCS, H2CO, HCN, PH3, H2S, and GeH4

“…These codes can be modified easily to work with any line lists as far as rotational quanta are provided. One should note, however, that the HITRAN2020 data for CO 2 broadening of SO 2 and OCS lines were provided by the authors of Dudaryonok & Lavrentieva (2018); Lavrentieva & Dudaryonok (2020), and therefore the associated codes are not provided here.…”

“…One particular example is SO 2 broadened by CO 2 , where prior to Wilzewski et al (2016) only one measurement for a single transition was available in the literature (Krishnaji 1963) and was recorded in 1963. Whereas following Wilzewski et al (2016), a number of comprehensive studies have appeared (Ceselin et al 2017;Dudaryonok & Lavrentieva 2018;Borkov et al 2019). Such measurements are necessary when making accurate identifications of transitions from different molecules but with similar frequencies, as recently demonstrated with the analysis of possibly blended PH 3 and SO 2 transitions in the atmosphere of Venus (Greaves et al 2020;Villanueva et al 2021;Encrenaz et al 2020;Lincowski et al 2021).…”

“…Additionally, extrapolated CO 2 -broadening and temperature-dependence values (as well as line shifts) fromDudaryonok & Lavrentieva (2018) were applied to all other HITRAN2020 SO 2 lines where CO 2 -broadening and shift data were not available. Temperature-dependence values were not available from the studies ofBorkov et al (2019) andCeselin et al (2017); therefore, they were calculated byDudaryonok & Lavrentieva (2018). This new inclusion has led to more accurate temperature-dependence values for the CO 2 -broadened spectra of SO 2 , compared to the default value of 0.75 that was previously employed in the HITRAN2016 SO 2 line list for CO 2 broadening.The CO 2 -broadening values for SO 2 fromCeselin et al (2017) were applicable for the ν 1 and ν 1 + ν 2 − ν 2 bands for the 32 S 16 O 2 isotopologue and ν 1 band for the 34 S 16 O 2 isotopologue.…”

Using HITRAN to Model Opacities for Planetary Atmospheres: Test case of Microwave Spectra of NH$_3$, SO$_2$ and PH$_3$

“…For HITRAN2020, the SO 2 -CO 2 broadening data were updated based on the experimental measurements from Borkov et al (2019) and Ceselin et al (2017). Furthermore, extrapolated (beyond laboratory measurements) broadening, temperature dependence, and line shift values were applied by Dudaryonok and Lavrentieva (2018) to transitions where broadening data were not directly available. This process has provided unique CO 2 broadening, temperature dependence and pressure induced line shift (which was previously not available in HITRAN) data to every SO 2 transition.…”

“…This process has provided unique CO 2 broadening, temperature dependence and pressure induced line shift (which was previously not available in HITRAN) data to every SO 2 transition. A full in-depth analysis as to the validity of the new SO 2 -CO 2 broadening data are available in (Dudaryonok and Lavrentieva, 2018) and there it was found that the uncertainty between the applied theoretical values from experimental measurements are less than 8%. Needless to say, the updated SO 2 -CO 2 broadening data from Dudaryonok and Lavrentieva (2018) are expected to give even better performance than that of HITRAN2016.…”