A differential-absorption lidar for ozone sensing in the upper atmosphere-lower stratosphere

At the Siberian Lidar Station of the Zuev Institute of Atmospheric Optics (Tomsk) (56.5°N, 85.0° E), a lidar has been developed for measuring the vertical distribution of ozone in the upper troposphere-lower stratosphere in order to study the ozone dynamics in the tropopause region and the troposphere-stratosphere exchange. In sensing performed by the method of differential absorption and scattering, a pair of wavelengths of 299/341 nm is used, which correspond to the first and second Stokes components of converted radiation of the fourth harmonic of the pumping radiation from a Nd:YAG laser (266 nm) on the basis of the effect of stimulated Raman scattering in hydrogen.