A semi-implicit integration scheme for baroclinic models

"In an effort to reduce the large amount of computing time necessary to carry out an integration of primitive-equation numerical weather prediction models, an effort was initiated at NMC in the summer of 1969 to examine the feasibility of employing a semi-implicit integration method with such models. At that time, Soviet scientists under the direction of Marchuk had successfully applied this technique to a primitive-equation model (9). Robert, in Canada, had adapted this idea for the integration of a spectral model (12), and had begun work on a finite-difference primitive-equation barotropic model. The latter application turned out to be successful also, and was subsequently documented in the literature (Kwizak and Robert, 8)"--Introduction J. P. Gerrity, Jr. and R. D. McPherson. "December 1971." "This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members." System requirements: Adobe Acrobat Reader. Includes bibliographical references (pages 19-20). 1971 NWS (National Weather Service) Library Public Domain 1931