On dielectric properties of dry and wet snow

The different sets of experimental data on dielectric permittivity of dry and wet snow at high frequencies have been approximated by various functions. In this paper we show a possibility of approximations of these data as the functions of dry snow density and water content using the Looyenga's mixture formulae with error of about 2%. These approximations are valid for radio frequency range from 1 MHz to 10 GHz and water content up to 10% and can be used for interpretation of remote sensing data, including satellite imagery and radio-echo sounding.