LOCAL FORECAST OF THE HEAT-MOISTURE STATE 
OF THE SOIL SURFACE AS A PROBLEM OF ENERGY AND 
MASS TRANSFER IN THE SYSTEM OF SOIL-ATMOSPHERE
 
E. I. Smolyar

UDC 519.9+551.524.37

Consideration is given to the dynamic problem of forecasting 
a frost on the soil surface, namely, of establishing the fact and 
the moment of the water-ice and water vapor-ice phase transitions 
at the soil-atmosphere interface, in calculating the evolution 
of the heat-moisture state of the viscous-buffer layer of air and 
the near-surface layer of soil that are adjacent to this interface. 
The results obtained can be used for prediction of ice formation on 
runways of airfields and on roads.

Agrophysical Scientific-Research Institute of the Russian 
Academy of Agricultural Sciences, St. Petersburg, Russia; email: 
smoljar@VT4142.spb.edu. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 74, No. 1, pp. 
67-73, January-February, 2001. Original article submitted 
October 27, 1999; revision submitted June 23, 2000.

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