Accession Number:

ADA071004

Title:

Snowpack Optical Properties in the Infrared

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

• Berger, Roger H.

Report Date:

1979-05-01

Pagination or Media Count:

16.0

Abstract:

A theory of the optical properties of snow in the 2-20 microns region of the infrared has been developed. Using this theory it is possible to predict the absorption and scattering coefficients and the emissivity of snow, as a function of the snow parameters of grain size and density, for densities between 0.17 and 0.4 gcu. cm. The absorption and scattering coefficients are linearly related to the density and inversely related to the average grain size. The emissivity is independent of grain size and exhibits only a weak dependence upon density.

Descriptors:

• *SNOW
• *REFLECTANCE
• *INFRARED RADIATION
• DENSITY
• ABSORPTION COEFFICIENTS
• EMISSIVITY
• LIGHT SCATTERING
• RADIATION ABSORPTION
• GRAIN SIZE

Subject Categories:

• Snow, Ice and Permafrost
• Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE