LIDAR MEASUREMENTS OF THE OZONOSPHERE IN THE ALTITUDE RANGE OF 5-45 KM
Abstract
As it is known, atmospheric ozone is the strongest oxidizer and a natural protective umbrella against harmful ultraviolet solar radiation. Approximately 80% of ozone is concentrated in the stratosphere. Depletion of the ozone layer leads to drought and the death of agricultural crops. The sudden transfer of air masses from the stratosphere to the troposphere can lead to the failure of engines of agricultural aviation and ground equipment, and also affects the health of livestock farms. Therefore, monitoring the state of the ozonosphere is an important task of the food security of Russua. For this purpose, methods and means of lidar control of the ozonosphere are the most informative. At the Siberian Lidar Station, based on the method of differential absorption and dispersion, a laser measuring complex has been developed, operating at the sounding wavelengths of 299/341 nm and 308/353 nm, which covers the high-altitude range of sounding vertical ozone profiles from ~5 km to ~45 km. To control the ozonosphere by lidar methods, it is important to take into account the actual ozone absorption cross-sections. Regular measurements were carried out and the results of the influence of the absorption cross-section on the behaviour of the ozone profile were presented.
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