While snow grains are distinctly non-spherical, spheres are often
assumed in radiative transfer calculations. Here, angular scattering
measurements for blowing snow are used to select an optically
equivalent snow grain shape model. Parameterizations are then developed
for the asymmetry parameter, single-scattering co-albedo and phase
function of snow. The parameterizations will help to improve the
treatment of snow in radiative transfer applications, including remote
sensing and climate models.