The near ultraviolet rotation-vibration spectrum of water

A new ab initio linelist of water vibration-rotation transitions extending up to 26 000 cm⁻¹ is presented. This linelist is used to analyze the near-ultraviolet portion of the long pathlength water absorption spectrum of Carleer et al. [J. Chem. Phys. 111, 2444 (1999)]. A total of 299 of the 568 observed transitions between 21 400 and 25 232 cm⁻¹ are assigned. These transitions belong to eight excited vibrational states: $(4,2)−1,$ $(7,0)+0,$ $(7,0)−0,$ $(6,0)+2,$ $(6,0)−2,$ $(7,0)−1,$ $(8,0)−0,$ and $(8,0)−0,$ in local mode notation. Only three of these states have been observed previously. Observed and calculated energy levels are presented for these vibrational states and the band origins are determined.