The effect of line-mixing in CO2 near 15 μm on the emission of Mars atmosphere

The influence of line-mixing on the emission by Mars' atmosphere is studied using a model based on the energy corrected sudden approximation. Comparisons between the forward calculations of brightness temperatures and the values measured by the short-wavelength spectrometer of the infrared space observatory are presented. These indicate that line-mixing effects, although not negligible-particularly near Q branches-are quite small and fall within the uncertainty range due to noise, model and measurements errors.