Knowledge Bank

A high resolution Fourier transform spectrometer coupled with a high temperature (800k) absorption cell have produced spectra for carbon dioxide in the $1600to2500cm-1$ $region1$. These new data provide access to very high rotational levels. The measurements have been combined with the best available high resolution observations in other regions of the infrared and a procedure has been implemented to provide a global set of constants. The self-consistent set of energy levels and rotational constants that are derived have been used ot predict the positions of $CO2$ IR transitions of significance to problems of atmospheric option.