Abstract: A model with spectral representation in the horizontal and Arakawa quadratic conserving finite differencing in the vertical is formulated. The model includes a moisture cycle consisting of large-scale condensation processes, ...

Abstract: The method presented is based on a similarity transformation of the coefficients matrix allowing the transformed variables to be relaxed independently in a recursive fashion.

Abstract: The meridional transport of quasi-geostrophic potential vorticity is calculated from atmospheric data from 1 yr. The calculation is based on available data for the transports of relative momentum and sensible heat from ...

Abstract: A two level quasi-geostrophic model for zonally averaged conditions has been integrated for a period of a few years. The model is forced by Newtonian heating and has internal and surface friction. The interaction between ...

Abstract: Vertical velocities compatible with climatological heating functions are computed. The physical assumptions in the thermodynamic equation incorporate radiational heating, heat flux from the underlying boundary, and heat ...

Abstract: The primitive equations are integrated with respect to the vertical coordinate, sigma. The resulting equations contain vertical eddy terms arising from non-linearities. These eddies are parameterized using a standard-atmosphere ...

Abstract: A quasi-inverse linear method has been developed to study the sensitivity of forecast errors to initial conditions for the National Centers for Environmental Prediction?s (NCEP) global spectral model. The inverse is ...

Abstract: The three components of the Regional Analysis and Forecast System (RAFS) of the National Meteorological Center (NMC) are described. This system was implemented in March 1985 to supplement guidance from NMC's limited-area ...