The sunlit lunar surface |
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| Authors: | J M Saari R W Shorthill D F Winter |
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| Institution: | (1) Boeing Scientific Research Laboratories, Seattle, Washington, USA |
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| Abstract: | Directional infrared emission from the sunlit lunar surface is determined for the thermal meridian and as a function of observer elevation and azimuth angles at three Sun elevation angles. A study of selected mare sites at full Moon suggests that brightness temperatures are relatively insensitive to changes in certain surface parameters, such as the photometric function, emissivity, and thermophysical properties of the soil. The observed deviations from predictions for an  average surface can be accounted for by changes in surface roughness.Deceased 12 January, 1971. |
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