The influence of stratigraphy on microwave radiation from natural snow cover

The present report discusses a structure dependent model of emissivity of s now cover. A snow cover was represented by a medium comprised of discrete s catterers. In the case of dry snow, ice grains stood for scatterers. For we t snow, two geometrical configurations of the water component were consider ed: I is a mixture of ice grains and water drops; II is a mixture of ice gr ains covered with water film and water drops. Scatters were assumed to have a spherical from and the lognormal distribution of sizes. Calculations of radiobrightness temperature of snow cover were made using data of glaciolog ical measurements of its physical parameters and microstructure. Results of calculations were compared with measurements of radiobrightness temperatur e at various states of the snow cover.