Articles | Volume 14, issue 5
https://doi.org/10.5194/tc-14-1497-2020
https://doi.org/10.5194/tc-14-1497-2020
Research article
 | 
07 May 2020
Research article |  | 07 May 2020

Spectral albedo measurements over snow-covered slopes: theory and slope effect corrections

Ghislain Picard, Marie Dumont, Maxim Lamare, François Tuzet, Fanny Larue, Roberta Pirazzini, and Laurent Arnaud

Model code and software

Snowoptics G. Picard https://doi.org/10.5281/zenodo.3742138

Snow slope G. Picard http://snowslope.pythonanywhere.com/

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Short summary
Surface albedo is an essential variable of snow-covered areas. The measurement of this variable over a tilted terrain with levelled sensors is affected by artefacts that need to be corrected. Here we develop a theory of spectral albedo measurement over slopes from which we derive four correction algorithms. The comparison to in situ measurements taken in the Alps shows the adequacy of the theory, and the application of the algorithms shows systematic improvements.