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On the angular variation of solar reflectance of snow
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Choudhury, B. J. Chang, A. T. C. |
| Copyright Year | 1979 |
| Description | Spectral and integrated solar reflectance of nonhomogeneous snowpacks were derived assuming surface reflection of direct radiation and subsurface multiple scattering. For surface reflection, a bidirectional reflectance distribution function derived for an isotropic Gaussian faceted surface was considered and for subsurface multiple scattering, an approximate solution of the radiative transfer equation was studied. Solar radiation incident on the snowpack was decomposed into direct and atmospherically scattered radiation. Spectral attenuation coefficients of ozone, carbon dioxide, water vapor, aerosol and molecular scattering were included in the calculation of incident solar radiation. Illustrative numerical results were given for a case of North American winter atmospheric conditions. The calculated dependence of spectrally integrated directional reflectance (or albedo) on solar elevation was in qualitative agreement with available observations. |
| File Size | 1050858 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800004285 |
| Archival Resource Key | ark:/13960/t6rz42q6k |
| Language | English |
| Publisher Date | 1979-10-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Normal Density Functions Snow Bidirectional Reflectance Reflected Waves Radiative Transfer Absorption Spectra Solar Radiation Reflectance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
