Accession Number : AD0826348

Title :   PREDICTION AND MAINTENANCE OF RADIATION FOG.

Descriptive Note : Final rept. no. 2, 15 Aug 66-14 Aug 67,

Corporate Author : UTAH UNIV SALT LAKE CITY

Personal Author(s) : Zdunkowski, Wilford G. ; Nielson, Barry C. ; Korb, Gunther

Report Date : DEC 1967

Pagination or Media Count : 206

Abstract : The first part of this investigation concerns itself with the prediction of temperature and wind profiles. The theory of radiative transfer for non-scattering particles and absorbing gases is included in the differential equations describing the physics of the boundary layer. The second problem discusses the mathematical theory of the distribution of short and long wave radiation in a multiple scattering and absorbing cloud or fog consisting of droplets and gases. A new solution of the equation of radiative transfer theory as formulated by Chandrasekhar (1960) is presented here. The numerical part of this study contains three major divisions. The first deals with the prediction and the growth rate of radiation fog, using simplified models of the atmosphere. The second division concerns itself with the tabulation of water vapor spectral line data. The third division is directly concerned with the evaluation of radiative fluxes, their divergence and the distribution of intensities as function of wave length, height, and observational angle for different zenith distances of the sun as applied to fog. Use is made of the complete radiative transfer theory. (Author)

Descriptors :   *WEATHER FORECASTING), (*ARMY OPERATIONS, (*FOG, PREDICTIONS), (*THERMAL RADIATION, FOG), DISTRIBUTION, ATMOSPHERIC REFRACTION, ATMOSPHERIC TEMPERATURE, ATMOSPHERIC CONDENSATION, ATMOSPHERE MODELS, BOUNDARY LAYER, HUMIDITY, DROPS, WIND, SCATTERING, DEW POINT, WATER VAPOR, CLOUDS, ATTENUATION, MATHEMATICAL ANALYSIS, LINE SPECTRA, ABSORPTION SPECTRA, SOLAR RADIATION, WEST GERMANY.

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE