A new radiation scheme has been developed for dynamic general-circulation modeling. An automatic determination of <i>k</i>-distribution parameters and a treatment of solar–terrestrial radiation interacting with gaseous and particulate matter are incorporated into the scheme by a technique that combines discrete ordinate and matrix operator methods. An accelerated scheme for cloud overlap is developed and tested. The resultant accuracy of the scheme is ∓0.5 K/day to a 70-km height in clear sky better than that of the line-by-line calculation method.
© 2000 Optical Society of America
(010.3920) Atmospheric and oceanic optics : Meteorology
(030.5620) Coherence and statistical optics : Radiative transfer
(290.1090) Scattering : Aerosol and cloud effects
(300.1030) Spectroscopy : Absorption
Teruyuki Nakajima, Masahito Tsukamoto, Yoko Tsushima, Atusi Numaguti, and Toshiyoshi Kimura, "Modeling of the Radiative Process in an Atmospheric General Circulation Model," Appl. Opt. 39, 4869-4878 (2000)