Snow cover affects heat transfer and temperature of soil in a winter period. Heat flows from underlying soil to snow cover were calculated using the data on total amount of atmospheric precipitation, average temperature and average thickness of snow cover. Parameters of heat transfer to snow cover and then to atmosphere were calculated using the collected data on density of snow cover, average temperature gradient in it and thermal conductivity of snow cover. The gradient was calculated as a ratio of the average difference of air temperature above snow (atmosphere temperature) and that on soil surface and an average thickness of snow cover. Thermal conductivity of snow cover was determined on the basis of empirical dependence of heat transfer on density [Iosida 1955, Sulakvelidze 1955, Pavlov 1979].
展开▼