Spectral reflectance of solar light from dirty snow: a simple theoretical model and its validation

A simple analytical equation for the snow albedo as the function of snow grain size, soot concentration, and soot mass absorption coefficient is presented. This simple equation can be used in climate models to assess the influence of snow pollution on snow albedo. It is shown that the squared logari...

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Bibliographic Details
Published in:The Cryosphere
Main Author: A. Kokhanovsky
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2013
Subjects:
geo
Online Access:https://doi.org/10.5194/tc-7-1325-2013
http://www.the-cryosphere.net/7/1325/2013/tc-7-1325-2013.pdf
https://doaj.org/article/b18a7e0039b24a099964052b0640c309
Description
Summary:A simple analytical equation for the snow albedo as the function of snow grain size, soot concentration, and soot mass absorption coefficient is presented. This simple equation can be used in climate models to assess the influence of snow pollution on snow albedo. It is shown that the squared logarithm of the albedo (in the visible) is directly proportional to the soot concentration. A new method of the determination of the soot mass absorption coefficient in snow is proposed. The equations derived are applied to a dusty snow layer as well.