A lidar for measurements of ozone distribution in the upper troposphere - lower stratosphere for studying the ozone dynamics in the tropopause region and, in particular, the processes of stratospheric - tropospheric exchange was developed at Siberian Lidar Station of the Institute of Atmospheric Optics SB RAS in Tomsk (56.5°N, 85.0°E). The sensing is performed using the method of differential absorption and scattering at a pair of wavelengths (299 and 341 nm), which are the first and second Stokes components of radiation transformation of the Nd:YAG laser pumping line at 266 nm, based on stimulated Raman effect in hydrogen. Using lidar with the receiving mirror of 0.5 m in diameter, we realized the ozone sensing in altitude range 5–18 km.
stratosphere, troposphere, stratosphere-troposphere exchange, ozone, lidar