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Combined stochastic and transfer model for atmospheric radiation

Authors
Journal
Journal of Quantitative Spectroscopy and Radiative Transfer
0022-4073
Publisher
Elsevier
Publication Date
Volume
73
Identifiers
DOI: 10.1016/s0022-4073(01)00196-0
Keywords
  • Radiative Transfer
  • Atmospheric Radiation
  • Solar Energy
  • Probability Density Function
  • Modelling

Abstract

Abstract A model for incident solar radiation is developed. The sky is treated as if it were composed of two semi-grey layers, an upper passively attenuating medium, and a lower participating isotropically scattering medium. The radiative transfer equation is solved for the lower medium using an exponential kernel approximation. This solution is combined with a gamma distribution for the creation of cloud particles to obtain a probability distribution for optical thickness. The combined solution is fitted and compared to generalised radiation curves.

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