The SO2 – CO2 line profile parameters are important to study the carbon dioxide atmospheres of terrestrial planets (Venus, Mars) and exoplanets. The carbon-dioxide shift coefficients of sulfur dioxide lines in ν1 + ν3 band are calculated at room temperature; the rotational quantum numbers J varies from 0 to 100 and Ka varies from 0 to 20. Calculations were made using a semi-empirical method, which includes a correction factor with adjustable parameters depending on the rotational quantum numbers. The calculated shift coefficients are in a good agreement with few published data.
line profile parameters, line shift, sulfur dioxide, carbon dioxide
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