LIDAR FOR MEASUREMENT OF OZONE VERTICAL DISTRIBUTION IN THE ATMOSPHERE

Abstract

One of the main climate-forming factors from the point of view of the radiation balance of the atmosphere are greenhouse gases, primarily ozone and gas components of the ozone cycles. Currently, operational information on their vertical distribution in the atmosphere can be obtained only using remote sensing, including laser one (lidar), which determines the relevance and scientific significance of this scientific and technical problem. The main aim of the study is to develop a lidar for studies of vertical distribution of ozone in the upper troposphere–stratosphere in the altitude range ~ (5–45) km at 299/341 and 308/353 nm in comparison with satellite measurements. Methods: differential absorption lidar (DIAL). Results. The paper introduces the lidar for measuring ozone vertical distribution above the city of Tomsk (56,5 N, 85,0 E). Lidar sounding of ozone was carried out on pairs of wavelengths 299/341 and 308/353 nm. The wavelengths used allow monitoring ozone vertical stratification within the upper troposphere, the stratosphere. The results of ozone lidar sensing as of January 2018 are given in comparison with the data of the satellites IASI/MetOp and AURA, as well as with the mid-latitude model of Kruger. The difference between the lidar profiles of ozone and the model ones is natural for the dynamics of the ozone layer on different observation days. The large differences in ozone vertical distribution in the values of lidar and the MetOp satellite at the altitudes of the stratosphere are explained by the need to correct the a priori model in the algorithm for reconstructing satellite data Conclusion. The lidar was developed to measure ozone profiles in the upper troposphere–the stratosphere. It allows reconstructing the vertical distribution of ozone in the altitude range ~ (5–45) km at wavelengths 299/341 and 308/353 nm.

Keywords

• lidar
• ozone
• atmosphere
• differential absorption
• metop satellite
• aura satellite