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

Carbon dioxide broadened line widths of sulfur dioxide molecule have been obtained at the room temperature for ∼40 lines, rotational quantum numbers vary in the range: J from 14 to 51 and Ka from 2 to 18. The temperature exponents for every line were calculated. The data have been evaluated theoretically in the frame of two methods: the semi-empirical approach based on analytical expressions and including a few-parameter correction and the averaged energy difference method. Being validated by comparison with measurements, the first approach was used to compute line broadening values with their temperature exponents. Obtained data could be useful for atmospheric, astrophysical applications and spectroscopic databases.