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The Cryosphere An interactive open-access journal of the European Geosciences Union
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The effect of surface roughness on snow albedo is often overlooked, although a small change in albedo may strongly affect the surface energy budget. By carving artificial roughness in an initially smooth snowpack, we highlight albedo reductions of 0.03–0.04 at 700 nm and 0.06–0.10 at 1000 nm. A model using photon transport is developed to compute albedo considering roughness and applied to understand the impact of roughness as a function of snow properties and illumination conditions.
TC | Articles | Volume 14, issue 5
The Cryosphere, 14, 1651–1672, 2020
https://doi.org/10.5194/tc-14-1651-2020
The Cryosphere, 14, 1651–1672, 2020
https://doi.org/10.5194/tc-14-1651-2020

Research article 27 May 2020

Research article | 27 May 2020

Snow albedo sensitivity to macroscopic surface roughness using a new ray-tracing model

Fanny Larue et al.

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Latest update: 17 Jan 2021
Publications Copernicus
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Short summary
The effect of surface roughness on snow albedo is often overlooked, although a small change in albedo may strongly affect the surface energy budget. By carving artificial roughness in an initially smooth snowpack, we highlight albedo reductions of 0.03–0.04 at 700 nm and 0.06–0.10 at 1000 nm. A model using photon transport is developed to compute albedo considering roughness and applied to understand the impact of roughness as a function of snow properties and illumination conditions.
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