Abstract: Kurihara and Holloway's approach of applying the box integration method to the Kurihara grid has been followed for a global forecast model. After encountering problems with the original system, it was found that the ...

Abstract: A large proportion of the noise in the National Meteorological Center 8-layer global model is due to a high-frequency external and a low-frequency internal gravity-inertia wave mode. Divergence diffusion effectively controls ...

Abstract: The application of a simple variation of the Euler-backward integration method to dynamic initialization is discussed. The variation involves few additional computations, is easily programmed and permits the rate of damping ...

Abstract: The objective analysis of meteorological variables has been routinely performed at the National Meteorological Center (NMC) since October 1955. In the first few years, much attention was devoted to incorporating three ...

Abstract: A summary of the history of observing-systems simulation experiments (OSSEs) is presented together with a description of current methodology, its capabilities and limitations, and considerations for the design of future ...

Abstract: A number of changes were made to the National Meteorological Center global data assimilation system (GDAS) during 1982 and 1983. The most significant of these changes was the replacement of the quasi-univariate, sigma-coordinate ...