Vol. 39, issue 01, article # 8

Abstract:

The outer scales of temperature and wind turbulence in the surface air layer are estimated based on experimental data. Statistics of the outer scales is provided for winter and summer periods at different time of the day at altitudes of 5 and 10 m. The correlations between the scales and temperature and wind velocity stratification in the surface air layer are analyzed. It is found that the temperature stratification has the strongest effect on the outer turbulence scales, and the scales increase with the measurement altitude. The results can be useful for studies of thermodynamic processes in the atmospheric boundary layer and the influence of turbulence on optical wave propagation.

Keywords:

atmosphere, outer turbulence scale, surface air layer, wind speed, air temperature

Figures:

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