Pressure shift and broadening of 110-101 water vapor lines by atmosphere gases

This paper is devoted to the measurement of pressure shift and broadening parameters of water-vapor lines of the pure rotational transition 110-101 in the ground vibrational state of H216O at 556.936 GHz, H217O at 552.02 GHz, H218O at 547.676 GHz, and the vibrationally excited state v2=1 line of H216O at 658.003 GHz. The broadening coefficients of the line at 556.936 GHz (for N2 and O2 as perturbing gases) coincide within the errors with the values obtained recently by Seta et al. [Pressure broadening coefficients of the water vapor lines at 556.936 and 752.033 GHz. JQSRT 2008;109:144-50] by means of a very different technique (THz-TDS). Pressure shift and broadening for other lines were measured for the first time. Comparison of our results with previous measurements and theoretical calculations is presented.