Vol. 37, issue 05, article # 6

Abstract:

A flight experiment was carried out in which turbulence was sounded with the UV lidar BSE-5 from the Tu-134 Optik laboratory aircraft. The experiment was conducted in September 2022 as part of the Arctic exploration program. During the flights, lidar recorded zones of moderate turbulence in the lower troposphere, where the probability of turbulence is maximal, and isolated cases of clear air turbulence (CAT) at an altitude of 9 km. The intensity of the aircraft shaking was monitored using a 3-coordinate accelerometer. It was found that the turbulent lidar can be used in practice for remote detection of turbulent zones at altitudes where most commercial flights are carried out. The prospect of ground-based application of turbulent lidar for solving aviation safety problems during flights in the lower troposphere is shown. The results of the BSE-5 lidar sounding in winter, when an increase in the intensity of turbulence in the 0.4–1.6 km layer was recorded during the passage of a cold front, are presented.

Keywords:

turbulent lidar, backscattering enhancement, Kelvin–Helmholtz instability, clear air turbulence

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