WG08		15min3:37

R. GAMACHE, Department of Environmental, Earth, and Atmospheric Sciences and Center for Atmospheric Research, University of Massachusetts, Lowell, MA 01854; R. LYNCH, Wentworth Institute of Technology, 550 Huntington Ave., Boston, MA 02135.

The pressure broadened halfwidth of water vapor transitions in the ground, ₂, ₁, and ₃ bands are calculated with hydrogen as the perturbing species using the fully complex Robert and Bonamy theory. The assumed intermolecular potential is a combination of electrostatic, Lennard-Jones 6-12 atom-atom (expanded to 4th order), induction, and dispersion terms. The results are compared with the measurements of Brown and Plymate and the vibrational dependence of the halfwidths investigated.