Abstract
Continuous measurements by the spectral bi-angular reflection method are carried out for frost layer growing at the atmospheric pressure and the room temperature in the surrounding atmosphere. A four-flux model of radiation transfer is introduced to analyze the measured data. The spectral absorption and scattering coefficients are evaluated in connection with the bulk density of frost layer; The absorption coefficients at the absorption band of ice prove to be proportional to the bulk density of frost layer. The results of the optical measurements show the necessity to consider the stratified structure of frost layer in the 'crystal growth period'.
