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Title: Red and near-infrared spectral reflectance of snow
Authors: U.S. Army Mobility Equipment Research and Development Center.
United States. National Oceanic and Atmospheric Administration.
O'Brien, Harold W.
Munis, Richard H., 1936-
Keywords: Near-infrared spectral reflectance of snow
Red spectral reflectance of snow
Snow reflectance
Optical properties
Snow optics
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Research report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 332.
Description: Research Report
Abstract: The spectral reflectance of snow in the range of 0.60 to 2.50 μm wavelengths was studied in a cold laboratory using natural snow and simulated preparations of snow. A white barium sulfate powder was used as the standard for comparison. The high reflectance (usually nearly 100%) of fresh natural snow in the visible wavelength declines rapidly at wavelengths near and beyond 0.80 μm, as the spectral absorption coefficients of ice increase. Aging snow becomes only somewhat less reflective than fresh snow in the visible region and usually retains a reflectance greater than 80%. In the near infrared, aging snow tends to become considerably less reflective than fresh snow. The rate of decline of near-infrared reflectance due to aging is strongly affected by the history of the snow during aging.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Research Report

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