Articles | Volume 15, issue 2
https://doi.org/10.5194/tc-15-793-2021
© Author(s) 2021. 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-15-793-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Effect of small-scale snow surface roughness on snow albedo and reflectance
Terhikki Manninen
CORRESPONDING AUTHOR
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Kati Anttila
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Emmihenna Jääskeläinen
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Aku Riihelä
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Jouni Peltoniemi
Finnish Geospatial Research Institute, National Land Survey,
Geodeetinrinne 2, 02430 Masala, Finland
Petri Räisänen
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Panu Lahtinen
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Niilo Siljamo
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Laura Thölix
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Outi Meinander
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Anna Kontu
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Hanne Suokanerva
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Roberta Pirazzini
Finnish Meteorological Institute, Helsinki, P.O. Box 503, 00101,
Finland
Juha Suomalainen
Finnish Geospatial Research Institute, National Land Survey,
Geodeetinrinne 2, 02430 Masala, Finland
Teemu Hakala
Finnish Geospatial Research Institute, National Land Survey,
Geodeetinrinne 2, 02430 Masala, Finland
Sanna Kaasalainen
Finnish Geospatial Research Institute, National Land Survey,
Geodeetinrinne 2, 02430 Masala, Finland
Harri Kaartinen
Finnish Geospatial Research Institute, National Land Survey,
Geodeetinrinne 2, 02430 Masala, Finland
Department of Geography and Geology, University of Turku, 20500
Turku, Finland
Antero Kukko
Finnish Geospatial Research Institute, National Land Survey,
Geodeetinrinne 2, 02430 Masala, Finland
Department of Built Environment, Aalto University, 02150 Espoo,
Finland
Olivier Hautecoeur
Météo-France, Toulouse, France
currently at: Exostaff GmbH/EUMETSAT, Darmstadt, Germany
Jean-Louis Roujean
Centre d'Etudes Spatiales de la BIOsphère (CESBIO) – UMR 5126 –
31401 Toulouse, France
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Latest update: 15 Nov 2025
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.
The primary goal of this paper is to present a model of snow surface albedo (brightness)...