The first physical model for the spectral ‘bioalbedo’ of snow, which predicts the spectral reflectance of snow packs contaminated with variable concentrations of red snow algae of varying size and pigment concentrations have been developed. The results have been published in the paper A predictive model for the spectral “bioalbedo” of snow by J.M. Cook (University of Sheffiled) et al., including Nansen Center CEO Prof.