[IEEE 2004 IEEE International Conference onComputational Intelligence for Measurement Systems and Applications, 2004. CIMSA. - Boston, MA, USA (July 14-16, 2004)] 2004 IEEE International Conference onComputational Intelligence for Measurement Systems and Applications, 2004. CIMSA. - Fast and accurate approximation of the long wave radiation parameterization in a GCM using neural networks: evaluation of computational performance and accuracy of approximation in the NCAR CAM-2