Articles | Volume 15, issue 2
The Cryosphere, 15, 793–820, 2021
The Cryosphere, 15, 793–820, 2021

Research article 17 Feb 2021

Research article | 17 Feb 2021

Effect of small-scale snow surface roughness on snow albedo and reflectance

Terhikki Manninen et al.

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Cited articles

Anttila, K., Manninen, T., Karjalainen, T., Lahtinen, P., Riihelä, A., and Siljamo, N.: The temporal and spatial variability in submeter scale surface roughness of seasonal snow in Sodankylä Finnish Lapland in 2009–2010, J. Geophys. Res.-Atmos., 119, 9236–9252,, 2014. 
Aoki, T., Kuchiki, K., Niwano, M., Kodama, Y., Hosaka, M., and Tanaka, T.: Physically based snow albedo model for calculating broadband albedos and the solar heating profile in snowpack for general circulation models, J. Geophys. Res., 116, D11114,, 2011. 
Armstrong, R. L. and Brun, E. (Eds.): Snow and climate, Cambridge University Press, New York, USA, 2008. 
Baldridge, A. M., Hook, S. J., Grove, C. I., and Rivera, G.: The ASTER Spectral Library Version 2.0, Remote Sens. Environ., 113, 711–715,, 2009. 
Beckmann, P. and Spizzicchino, A.: The Scattering of Electromagnetic Waves from Rough Surfaces, Pergamon Press, Oxford, UK, 497 pp., 1963. 
Short summary
The primary goal of this paper is to present a model of snow surface albedo (brightness) accounting for small-scale surface roughness effects. It can be combined with any volume scattering model. The results indicate that surface roughness may decrease the albedo by about 1–3 % in midwinter and even more than 10 % during the late melting season. The effect is largest for low solar zenith angle values and lower bulk snow albedo values.