Turbulent flows of temperature variance in the atmospheric surface layer

Abstract

The turbulence characteristics that determine changes in the air temperature variance in the atmospheric surface layer are considered. The main experimental material for the analysis was obtained with a sonic weather station set in the atmospheric surface layer (10 m) at a territory with natural landscape. Some episodes observed in the summer and winter seasons are analyzed. It is found that the flows of temperature variance decrease markedly in winter as compared to summer. A pronounced diurnal profile of the studied characteristic was observed in summer and absent in winter.