Line shape parameters of air-broadened 12CO2 transitions in the 2.0 µm region, with their temperature dependence

•The line shapes of four transitions of the 12CO2 in the 2 µm region are studied.•High S/N spectra are recorded for CO2 in air by CRDS between 245 and 330 K.•A multi-spectrum fit procedure with SDNG profiles and line-mixing has been used.•Accurate line profile parameters and their temperature dependence are obtained.•Results are compared with previous experimental data and rCMD simulations.