Validation of HITEMP-2010 for carbon dioxide and water vapour at high temperatures and atmospheric pressures in 450-7600 cm−1 spectral range

•High resolution transmissivity data have been generated for CO2/H2O/N2 mixtures.•Temperatures are in the 500-1770 K range.•Measurements are available as Supplementary Material.•HITEMP-2010 has been used to reproduce the measured data.•HITEMP-2010 has proven to be an excellent database.

The objective of the work is validation of HITEMP-2010 at atmospheric pressures and temperatures reaching 1770K. To this end, spectral transmissivities at 1 cm−1 resolution and excellent signal-to-noise-ratio have been measured for 22 CO2/H2O/N2 mixtures. In this paper we consider the 450 cm−1-7600 cm−1 spectral range. The LbL calculations and their comparison with the measured spectra have clearly shown that HITEMP-2010 is an excellent database (superior to previous versions) for calculating emissivities and absorption coefficients for CO2 and H2O molecules in the 500-1770 K range. Several absorption lines listed in HITEMP-2010 have not been observed in the measured spectra and/or are wrongly scaled with temperature. The complete (there are no missing bands) spectra spanning the 450-7600cm−1 range are appended as Supplementary Material.