The ROSCOE Manual. Volume 24. Natural Clouds (Physical and Optical Properties and Statistics).
Final rept. 1 Jan 76-31 Jul 79,
SCIENCE APPLICATIONS INC LA JOLLA CA
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The effect of natural clouds on IR observables from nuclear explosions is modeled for the wavelength range from 2 to 5 microns. A computer code for use with the ROSCOE-IR main program is provided to allow evaluation of the radiance resulting from transmission and reflection by natural clouds. Mie scattering cross-sections are calculated and used to generate transport cross-sections and bidirectional reflectance coefficients. Cloud transmission is treated by diffusion. A deterministic model allows the user to specify the cloud geometry. A statistical model allows selection of geographic weather averages and generates the probability distribution in radiance coefficients. Solar radiation and natural cloud thermal emission are treated.
- Infrared Detection and Detectors