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Gabriel, J. Philip

Works: 2 works in 6 publications in 1 language and 8 library holdings
Roles: Author
Publication Timeline
Publications about J. Philip Gabriel
Publications by J. Philip Gabriel
Most widely held works by J. Philip Gabriel
Discrete angle radiative transfer in uniform and extremely variable clouds by Philip Gabriel( Book )
5 editions published between 1988 and 1990 in English and held by 7 libraries worldwide
"In order to facilitate study of very inhomogeneous optical media such as clouds, the difficult angular part of radiative transfer calculations is simplified by considering a series of models in which conservative scattering only occurs in discrete directions. Analytic and numerical results for the radiative properties of these Discrete Angle Radiative Transfer (DART) systems are obtained in the limits of both optically thin and thick media. Specific results include: (a) In thick homogeneous media, the albedo (reflection coefficient), unlike the transmission, cannot be obtained by a diffusion equation. (b) With the aid of an exact analogy with an early model of conductor/superconductor mixtures, it is argued that inhomogeneous media with embedded holes, neither the transmission, nor the albedo can be described by diffusive random walks. (c) Using renormalization methods, it is shown that thin cloud behaviour is sensitive to the scattering phase functions since it is associated with a repelling fixed point, whereas, the thick cloud limit is universal in that it is phase function independent, and associated with an attracting fixed point. (d) In fractal media, the optical thickness required for a given albedo or transmission can differ by large factors from that required in the corresponding plane parallel geometry. The relevant scaling exponents have been calculated in a very simple example. (e) Important global meteorological and climatological implications of the above are discussed when applied to the scattering of visible light in clouds." --
The attention of very cold neutrons by titanium foil by Philip Gabriel( Book )
1 edition published in 1982 in English and held by 1 library worldwide
Alternative Names
Gabriel, Philip D
English (6)
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