A new lidar instrument has been developed to measure tropospheric ozone and water vapor at low altitude. The lidar uses Raman scattering of an UV beam from atmospheric nitrogen, oxygen, and water vapor to retrieve ozone and water-vapor vertical profiles. By numerical simulation we investigate the sensitivity of the method to both atmospheric and device perturbations. The aerosol optical effect in the planetary boundary layer, ozone interference in water-vapor retrieval, statistical error, optical cross talk between Raman-shifted channels, and optical cross talk between an elastically backscattered signal in Raman-shifted signals and an afterpulse effect are studied in detail. In support of the main conclusions of this model study, time series of ozone and water vapor obtained at the Swiss Federal Institute of Technology in Lausanne and during a field campaign in Crete are presented. They are compared with point monitor and balloon sounding measurements for daytime and nighttime conditions.
© 2001 Optical Society of America
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(010.3640) Atmospheric and oceanic optics : Lidar
(010.7030) Atmospheric and oceanic optics : Troposphere
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
Benoît Lazzarotto, Max Frioud, Gilles Larchevêque, Valentin Mitev, Philippe Quaglia, Valentin Simeonov, Anne Thompson, Hubert van den Bergh, and Bertrand Calpini, "Ozone and Water-Vapor Measurements by Raman Lidar in the Planetary Boundary Layer: Error Sources and Field Measurements," Appl. Opt. 40, 2985-2997 (2001)