An efficient and accurate correlated-k parameterization of infrared radiative transfer for troposphere-stratosphere-mesosphere GCMs

An efficient and accurate correlated-k parameterization of infrared radiative transfer for the troposphere, stratosphere and mesosphere (TSM) has been developed. A new approach of g-quadrature, using the delta log(k) method with nonuniform intervals, was found to be most efficient. Validation against line-by-line calculations for 1D and 2D fields are presented. The scheme is efficient enough to be run in TSMGCMs. (C) 2001 Royal Meteorological Society