Influence of Air Movement Structure on Microphysical Properties of the Atmosphere over Listvyanka

Abstract

The relationship between sulfur dioxide (SO₂) concentration and small-scale turbulence within Southern Baikal is understudied. The work studies jet streams and atmospheric turbulence affecting the surface SO₂ content over Listvyanka station. The cases are considered where the surface SO₂ concentration tends to increase at negative vertical turbulent specific heat fluxes. This occurs against the background of jet streams within the lower air layer and large vertical wind speed shear below the altitude of the jet stream generation. A vertical turbulent specific heat flux in the surface air layer can serve a key indicator of possible positive relationship between the surface SO₂ concentration and the total kinetic energy of turbulence. The analysis has shown that SO₂ concentration tends to increase at negative vertical turbulent temperature fluxes against the development of low-level jet streams. In similar situations, but with positive or near-zero temperature fluxes, SO₂ concentrations usually remain at a background level.