DEVELOPMENT OF RESEARCH METHODS OF URBAN SOIL TEMPERATURE DYNAMICS

The article shows that the temperature of urban soils is one of the main indicators of their condition. The average value and the nature of the temperature distribution in the soil volume determine the processes of heat transfer between the soil and the air in the urbanized area. This ultimately characterizes the influence of urban soils on the processes of climate formation in urban areas. The analysis of modern methods for studying the temperature dynamics of urban soils is carried out. It was found that research is rational to carry out by combining theoretical and experimental methods. The dis-tribution of temperature fields and heat flux density fields in urban soils under various conditions is deter-mined by mathematical, in particular, numerical methods. Coefficients of thermophysical properties of the soil, as well as verification of some calculated results, are carried out by experimental methods. An analysis of existing experimental research methods revealed a key drawback: a small number of points for simultane-ous temperature measurement in the urban soils volume. A scheme is proposed, as well as a prototype of a means of automated control of the distribution of the temperature field, which allows us to study the tempera-ture dynamics at various depths of the soil profile. To test the means of automated control, comparative studies of the dynamics of the temperature field in the volume of urban soil represented by gray forest soil were carried out. An experimental temperature dis-tribution was obtained over several days; a statistical verification of the results was carried out. Theoretical calculations of the dynamics of the temperature field by the numerical model J.A. Infante Sedano It is estab-lished that the discrepancies between the theoretically predicted and the experimentally estimated tempera-ture field are insignificant, which allows us to use the developed tool for automated control of the tempera-ture field distribution in the soil to assess its actual state when solving numerous fundamental and applied problems.