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  • 1
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    Design and verification of a cloud field optical simulator (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A concept and an apparatus designed to investigate the reflected and transmitted distributions of light from optically thick clouds is presented. The Cloud Field Optical Simulator (CFOS) is a laboratory device which utilizes an array of incandescent lamps as a source, simulated clouds made from cotton or styrofoam as targets, and an array of silicon photodiodes as detectors. The device allows virtually any source-target-detector geometry to be examined. Similitude between real clouds and their CFOS cotton or styrofoam counterparts is established by relying on a linear relationship between optical depth and the ratio of reflected to transmitted light for a semiinfinite layer. Comparisons of principal plane radiances observed by the CFOS with Monte Carlo computations for a water cloud at 0.7 micron show excellent agreement. Initial applications of the CFOS are discussed.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Climate and Applied Meteorology (ISSN 0733-3021); 22; May 1983
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The development of convective instability, wind shear, and vertical motion in relation to convection activity and synoptic systems in AVE 4 (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Data from the Fourth Atmospheric Variability Experiment were used to investigate conditions/factors responsible for the development (local time rate-of-change) of convective instability, wind shear, and vertical motion in areas with varying degrees of convective activity. AVE IV sounding data were taken at 3 or 6 h intervals during a 36 h period on 24-25 April 1975 over approximately the eastern half of the United States. An error analysis was performed for each variable studied.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-3386 , M-342
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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