McCoy J H, Rensch D B, Long R K
Appl Opt. 1969 Jul 1;8(7):1471-8. doi: 10.1364/AO.8.001471.
Laboratory measurements using a stabilized CO(2) laser and a 1-km long path absorption cell are presented here for pure water vapor and water vapor-air mixtures. An empirical extinction coefficient equation is presented and used to compute absorption for a variety of atmospheric slant paths. Finally, the laboratory results are confirmed by comparison with outdoor transmission studies over a 1.95-km path.
