Articles | Volume 14, issue 5
https://doi.org/10.5194/tc-14-1651-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-14-1651-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 May 2020
Research article |
| 27 May 2020
| 27 May 2020
Snow albedo sensitivity to macroscopic surface roughness using a new ray-tracing model
Fanny Larue
CORRESPONDING AUTHOR
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Ghislain Picard
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Laurent Arnaud
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Inès Ollivier
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Clément Delcourt
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Maxim Lamare
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’Etudes de la Neige, 38000 Grenoble, France
François Tuzet
Univ. Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement (IGE), UMR 5001, Grenoble, 38041, France
Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’Etudes de la Neige, 38000 Grenoble, France
Jesus Revuelto
Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’Etudes de la Neige, 38000 Grenoble, France
Marie Dumont
Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’Etudes de la Neige, 38000 Grenoble, France
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- Unraveling the optical shape of snow A. Robledano et al. 10.1038/s41467-023-39671-3
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- Modelling surface temperature and radiation budget of snow-covered complex terrain A. Robledano et al. 10.5194/tc-16-559-2022
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- Measurements and Modeling of Optical-Equivalent Snow Grain Sizes under Arctic Low-Sun Conditions E. Jäkel et al. 10.3390/rs13234904
- Simulation of snow albedo and solar irradiance profile with the Two-streAm Radiative TransfEr in Snow (TARTES) v2.0 model G. Picard & Q. Libois 10.5194/gmd-17-8927-2024
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- The Collection of Hyperspectral Measurements on Snow and Ice Covers in Polar Regions (SISpec 2.0) R. Salvatori et al. 10.3390/rs14092213
- Simulating optical top-of-atmosphere radiance satellite images over snow-covered rugged terrain M. Lamare et al. 10.5194/tc-14-3995-2020
- Simulation of Spectral Albedo and Bidirectional Reflectance over Snow-Covered Urban Canyon: Model Development and Factor Analysis Q. Chen et al. 10.3390/rs16132340
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Latest update: 02 Apr 2025
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.
The effect of surface roughness on snow albedo is often overlooked,
although a small change in...
