Abstract
A laser radar system using Raman and Mie scattering for simultaneous measurement of water vapor and aerosols was developed. This system can detect Raman scattering from atmospheric nitrogen (N2), oxygen (O2), or water vapor (H2O), as well as Mie-Rayleigh scattering for a laser wavelength of 280 nm. Using this system, vertical profiles of the water vapor mixing ratio were measured with about 10% accuracy for height 30-1500 m using Raman scattering from H2O and N2. The correction due to differential absorption by O3 was found to be <3%. Simultaneous measurement of the water vapor mixing ratio and Mie backscatter coefficient showed that uncondensed and condensed water vapor can be identified by comparing the spatial profiles of the water vapor mixing ratio and Mie backscatter coefficient. In addition, the average O3 concentration was obtained using Raman scattering from atmospheric N2 and O2.
